Transmission

TABLE OF CONTENTS

1.0

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.1

SYSTEM COVERAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.2

SIX -STEP TROUBLESHOOTING PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . .1

2.0

IDENTIFICATION OF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

3.0

SYSTEM DESCRIPTION AND FUNCTIONAL OPERATION . . . . . . . . . . . . . . . . . . . . . .1

3.1

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

3.2

FUNCTIONAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

3.2.1

TRANSMISSION OPERATION AND SHIFT SCHEDULING AT

VARIOUS OIL TEMPERATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

3.2.2

LINE PRESSURE CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3.2.3

DRIVE LEARN PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3.3

DIAGNOSTIC TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3.3.1

HARD CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3.2

ONE TRIP FAILURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3.3

INTERMITTENT CODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3.4

STARTS SINCE SET COUNTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3.5

TROUBLE CODE ERASURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.3.6

LIST OF DIAGNOSTIC TROUBLE CODES (DTC) (Detailed descriptions follow list) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3.3.7

DTC DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.3.8

QUICK LEARN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

3.3.9

CLUTCH VOLUMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.4

USING THE DRBIII

T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.5

DRBIII

T

ERROR MESSAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.5.1

DRBIII

T

DOES NOT POWER UP (BLANK SCREEN). . . . . . . . . . . . . .20

3.5.2

DISPLAY IS NOT VISIBLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.5.3

SOME DISPLAY ITEMS READ

9

---

9

. . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3.6

TRANSMISSION SIMULATOR (MILLER TOOL # 8333). . . . . . . . . . . . . . . . . . . .21

4.0

DISCLAIMERS, SAFETY, AND WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.1

DISCLAIMERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.2

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.2.1

TECHNICIAN SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . .21

4.2.2

VEHICLE PREPARATION FOR TESTING . . . . . . . . . . . . . . . . . . . . . .21

4.2.3

SERVICING SUB-ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

4.2.4

DRBIII

T

SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

4.3

WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

4.3.1

VEHICLE DAMAGE WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

4.3.2

ROAD TESTING A COMPLAINT VEHICLE. . . . . . . . . . . . . . . . . . . . . .22

4.3.3

ELECTRONIC PINION FACTOR WARNINGS (IF APPLICABLE) . . . .23

4.4.4

BULLETINS AND RECALLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

5.0

REQUIRED TOOLS AND EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.0

GLOSSARY OF TERMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.1

ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.2

DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

i

TABLE OF CONTENTS - Continued

7.0

DIAGNOSTIC INFORMATION AND PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . .25

COMMUNICATION

*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - GAS ONLY . . . . . .26

TRANSMISSION

P0120-THROTTLE POSITION SENSOR SIGNAL CIRCUIT . . . . . . . . . . . . . . . . . . . . .29

P0218-HIGH TEMPERATURE OPERATION ACTIVATED . . . . . . . . . . . . . . . . . . . . . . .32

P0604-INTERNAL TCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

P0605-INTERNAL TCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

P0613-INTERNAL TCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

P0706-CHECK SHIFTER SIGNAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

P0715-INPUT SPEED SENSOR ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

P0720-OUTPUT SPEED SENSOR ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

P0725-ENGINE SPEED SENSOR CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

P0731-GEAR RATIO ERROR IN 1ST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

P0732-GEAR RATIO ERROR IN 2ND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

P0733-GEAR RATIO ERROR IN 3RD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

P0734-GEAR RATIO ERROR IN 4TH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

P0735-GEAR RATIO ERROR 4TH PRIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

P0736-GEAR RATIO ERROR IN REVERSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . .70

P0750-LR SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

P0755-2C SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

P0760-OD SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

P0765-UD SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

P0770-4C SOLENOID CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

P0841-LR PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

P0845-2C HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . .96

P0846-2C PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . .102

P0867-LINE PRESSURE FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

P0868-LINE PRESSURE LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

P0869-LINE PRESSURE HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

P0870-OD HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . . .119

P0871-OD PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . .125

P0875-UD HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . . .129

P0876-UD PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . .135

P0884-POWER UP AT SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

P0888-RELAY OUTPUT ALWAYS OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

P0890-SWITCHED BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

P0891-TRANSMISSION RELAY ALWAYS ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148

P0932-LINE PRESSURE SENSOR FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

P0944-LOSS OF PRIME. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155

P0987-4C HYDRAULIC PRESSURE TEST FAILURE . . . . . . . . . . . . . . . . . . . . . . . . .158

P0988-4C PRESSURE SWITCH SENSE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . .164

P1684-BATTERY WAS DISCONNECTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168

P1694-BUS COMMUNICATION WITH ENGINE MODULE. . . . . . . . . . . . . . . . . . . . . .170

P1715-RESTRICTED PORT IN T3 RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

P1736-GEAR RATIO ERROR IN 2ND PRIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION . . . . . . . . . . . . . .175

P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION. . . . . . . . . . . . . . . .179

P1790-FAULT IMMEDIATELY AFTER SHIFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183

P1793-TRD LINK COMMUNICATION ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

ii


P1794-SPEED SENSOR GROUND ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187

P1799-CALCULATED OIL TEMP IN USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .190

P2700-INADEQUATE ELEMENT VOLUME LR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

P2701-INADEQUATE ELEMENT VOLUME 2C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196

P2702-INADEQUATE ELEMENT VOLUME OD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198

P2703- INADEQUATE ELEMENT VOLUME UD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200

P2704-INADEQUATE ELEMENT VOLUME 4C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .202

P2706-MS SOLENOID CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204

*BACKUP LAMPS COME ON WHILE SHIFTER IS NOT IN REVERSE POSITION. .208

*BACKUP LAMPS INOPERATIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209

*BUMP FELT SHORTLY AFTER STOP WITH NO DTC’S PRESENT . . . . . . . . . . . . .211

*BUMP FELT WHILE COASTING IN NEUTRAL WITH NO DTC’S PRESENT . . . . . .212

*CHECKING PARK/NEUTRAL SWITCH OPERATION . . . . . . . . . . . . . . . . . . . . . . . . .213

*POOR SHIFT QUALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215

*TRANSMISSION NOISY WITH NO DTC’S PRESENT . . . . . . . . . . . . . . . . . . . . . . . .216

*TRANSMISSION SHIFTS EARLY WITH NO DTC’S . . . . . . . . . . . . . . . . . . . . . . . . . .218

*TRANSMISSION SHIFTS ROUGH AFTER TCM REPLACEMENT OR REFLASH . .219

*TRANSMISSION SIMULATOR WILL NOT POWER UP . . . . . . . . . . . . . . . . . . . . . . .220

*VEHICLE IS SLUGGISH WITH NO DTC’S PRESENT . . . . . . . . . . . . . . . . . . . . . . . .221

VERIFICATION TESTS

VERIFICATION TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222

8.0

COMPONENT LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225

8.1

CRANKSHAFT POSITION SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225

8.2

ELECTRONIC MODULE LOCATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225

8.3

TRANSMISSION COMPONENT LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .225

8.4

TRANSMISSION CONTROL MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226

8.5

TRANSMISSION LINE PRESSURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . .226

9.0

CONNECTOR PINOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227

ACCELERATOR PEDAL POSITION SENSOR (DIESEL) - BLACK 10 WAY. . . . . . . .227

BRAKE LAMP SWITCH - GRAY 6 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227

C113 (DIESEL) - LT. GRAY (TRANSMISSION SIDE) . . . . . . . . . . . . . . . . . . . . . . . . . .227

C201 (DIESEL) - WHITE (SHIFTER ASSEMBLY SIDE) . . . . . . . . . . . . . . . . . . . . . . . .227

CONTROLLER ANTILOCK BRAKE - BLACK 24 WAY . . . . . . . . . . . . . . . . . . . . . . . . .228

CRANKSHAFT POSITION SENSOR (GAS) - BLACK 3 WAY . . . . . . . . . . . . . . . . . . .228

DATA LINK CONNECTOR - BLACK 16 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229

DIAGNOSTIC JUNCTION PORT - BLACK 16 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . .229

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY. . . . . . . . . . . . . . . . . .230

ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAY. . . . . . . . . . . . . . . . . .231

GOVERNOR PRESSURE SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .231

INPUT SPEED SENSOR (4.7L) - BLACK 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232

FUSES (JB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234

JUNCTION BLOCK C2 (LHD) - BLACK 52 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235

JUNCTION BLOCK C2 (RHD) - BLACK 52 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .236

JUNCTION BLOCK C3 - BLACK 52 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237

LEFT REAR LAMP ASSEMBLY - BLACK 6 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .238

LINE PRESSURE SENSOR (4.7L) - BLACK 4 WAY . . . . . . . . . . . . . . . . . . . . . . . . . .238

OUTPUT SPEED SENSOR (4.0L) - GRAY 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . .238

OUTPUT SPEED SENSOR (4.7L) - BLACK 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . .238

iii


PARK/NEUTRAL POSITION SWITCH (4.0L) - BLACK 3 WAY . . . . . . . . . . . . . . . . . .239

POWERTRAIN CONTROL MODULE C1 (GAS) - BLACK 32 WAY . . . . . . . . . . . . . . .239

POWERTRAIN CONTROL MODULE C2 (GAS) - WHITE 32 WAY . . . . . . . . . . . . . . .240

POWERTRAIN CONTROL MODULE C3 (GAS) - GRAY 32 WAY . . . . . . . . . . . . . . . .241

FUSES (DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243

BACK-UP LAMP RELAY (DIESEL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243

FUSES (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245

TRANSMISSION CONTROL RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245

RIGHT REAR LAMP ASSEMBLY - BLACK 6 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . .246

SHIFTER ASSEMBLY (C201 DIESEL) - WHITE 12 WAY. . . . . . . . . . . . . . . . . . . . . . .246

SHIFTER ASSEMBLY (GAS) - WHITE 6 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246

SHIFTER ASSEMBLY C1 (DIESEL) - BLACK 12 WAY . . . . . . . . . . . . . . . . . . . . . . . .246

SHIFTER ASSEMBLY C2 (DIESEL) - 6 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247

THROTTLE POSITION SENSOR (4.0L) - BLACK 3 WAY . . . . . . . . . . . . . . . . . . . . . .247

THROTTLE POSITION SENSOR (4.7L) - 3 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247

TRANSFER CASE POSITION SENSOR - BLACK 2 WAY . . . . . . . . . . . . . . . . . . . . . .247

TRANSMISSION CONTROL MODULE (4.7L) - BLACK 60 WAY. . . . . . . . . . . . . . . . .248

TRANSMISSION CONTROL MODULE C1 (DIESEL) - BLACK 18 WAY. . . . . . . . . . .249

TRANSMISSION CONTROL MODULE C2 (DIESEL) - BLACK 14 WAY. . . . . . . . . . .249

TRANSMISSION SOLENOID (4.0L) - BLACK 8 WAY . . . . . . . . . . . . . . . . . . . . . . . . .249

TRANSMISSION SOLENOID ASSEMBLY (DIESEL) - BLACK 13 WAY . . . . . . . . . . .250

TRANSMISSION SOLENOID/TRS ASSEMBLY (4.7L) - GRAY 23 WAY . . . . . . . . . . .250

10.0

SCHEMATIC DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .251

10.1 TRANSMISSION SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .251

11.0

CHARTS AND GRAPHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253

11.1 PRESSURE SWITCH STATES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253

11.2 SHIFT LEVER ERROR CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253

11.3 TRANSMISSION RANGE SENSOR STATES . . . . . . . . . . . . . . . . . . . . . . . . . . .254

iv

1.0

INTRODUCTION

The procedures contained in this manual include all of the specifications, instructions, and graphics needed to diagnose 45RFE/545RFE Electronic Automatic Transmission (EATX) problems. The diagnostics in this manual are based on the failure condition or symptom being present at the time of diagnosis.

When repairs are required, refer to the appropriate volume of the service manual for the proper removal and repair procedure.

Diagnostic procedures change every year. New diagnostic systems may be added and/or carryover systems may be enhanced. READ THIS MANUAL

BEFORE TRYING TO DIAGNOSE A VEHICLE

TROUBLE CODE. It is recommended that you review the entire manual to become familiar with all new and changed diagnostic procedures.

1.1

SYSTEM COVERAGE

This diagnostic procedures manual covers all

2002 Model Year WJ/WG equipped with a 45RFE/

545RFE Automatic Transmission.

1.2

SIX -STEP TROUBLESHOOTING

PROCEDURE

•

•

•

•

•

•

Diagnosis of the 45RFE/545RFE electronic transmission is done in six basic steps:

Verification of complaint

Verification of any related symptoms

Symptom analysis

Problem isolation

Repair of isolated problem

Verification of proper operation

2.0

IDENTIFICATION OF

SYSTEM

The 45RFE/545RFE Transmission family can be identified by confirming the presence of a 23 pin electrical connector on the left hand side of the transmission oriented vertically near the manual lever.

3.0

SYSTEM DESCRIPTION AND

FUNCTIONAL OPERATION

3.1

GENERAL DESCRIPTION

The 45RFE/545RFE electronic transmission is a conventional transmission in that it uses hydrauli-

GENERAL INFORMATION

cally applied clutches to shift a planetary gear train. However, the electronic control system replaces many of the mechanical and hydraulic components used in conventional transmission valve bodies.

The 45RFE/545RFE electronic transmission is a fully electronically controlled transmission. The

Transmission Control Module (TCM) is similar to

(but not the same as) the one used in the 41TE and

42LE transmissions, therefore many similarities exist in function and diagnosis.

The 45RFE/545RFE has an overrunning clutch

(used in 1st gear), an electronically controlled torque converter clutch, 3 planetary gearsets, and six clutch packs. The clutches are called 2nd Clutch

(2C), 4th Clutch (4C), Low/Reverse Clutch (LR),

Reverse Clutch (RC), Underdrive Clutch (UD), and

Overdrive Clutch (OD).

Although the 45RFE is considered a 4 speed transmission, it really has 5 forward gear ratios., the 545RFE is considered a 5 speed transmission, it really has 6 forward gear ratios. 2nd gear (1.67:1) and 2nd prime (1.50:1) gear are so close in ratio that they are not considered to be different gear ratios, although both are used as 2nd gear under certain conditions. During most upshift and downshift maneuvers, 2nd gear will be used. 2nd prime gear is only used for a high speed 4-2 downshift. The

545RFE transmission is essentially a software change to the TCM that allows an additional overdrive ratio of (.667:1). The gear ratio of 4th Prime is achieved by applying the 2C and OD clutches. The

4th Prime is used above 52 MPH. All gear ratios in the 45RFE/545RFE are achieved by applying two elements (clutches). During a shift, one element is released and another is applied, resulting in a different ratio. This is called a clutch to clutch shift.

In order to perform a 4-2 downshift, two elements would have to be released and two different elements applied. The 2nd prime gear ratio allows a clutch to clutch 4-2’ (2nd prime) downshift.

The oil pump in the 45RFE/545RFE is a dual stage positive displacement gear type pump. At idle and low engine speeds, both stages are working.

Once the engine speed reaches a point where one side of the pump can supply the necessary system requirements, the second stage is vented. This pump configuration gives the pressure and flow of a large displacement pump at low speeds, and the economy of a small displacement pump at higher engine speeds. The oil pump housing also contains some of the valves that are found in the valve body in a 41TE or 42LE transmission. The Converter

Clutch Switch Valve, Converter Clutch Regulator

Valve, Torque Converter Limit Valve, and the Pressure Regulator Valve, are all found in the oil pump housing.

1


The electronic control system consists of a Transmission Control Module (TCM), a Transmission

Range Sensor (TRS), an Input Speed Sensor (ISS), an Output Speed Sensor (OSS), a Line Pressure

Sensor (LPS), a Transmission Temperature Sensor

(TTS), five pressure switches, and seven solenoids.

Each clutch pack has a corresponding solenoid and pressure switch except for the reverse clutch which is controlled by the manual valve. The other two solenoids are called the Multi Select (MS) solenoid and the Pressure Control Solenoid (PCS).

The MS solenoid is used to control the LR clutch during P-R and N-R garage shifts and to control the

OD clutch when the Manual Valve is in the

9D9 position as reported by the TRS. If the manual valve is slightly out of position, the TRS will indicate a temporary zone (T3 or T4). In this case the OD clutch will be controlled by the OD solenoid. Note that if the TRS indicates a temporary zone, this is a valid PRNDL code and will not set a DTC

P0706(28). If the PRNDL code consistently indicates a temporary zone while the shift lever is in the

9D9 position, this would indicate some sort of mechanical problem in the shift linkage as opposed to an electrical TRS problem. Note: vehicle operation in the T3 temporary zone can set a DTC P1715(65).

3.2

FUNCTIONAL OPERATION

The 45RFE/545RFE electronic transmission has a fully adaptive control system. The system performs its functions based on continuous real-time sensor feedback information. The control system automatically adapts to changes in engine performance and friction element variations to provide consistent shift quality. The control system ensures that clutch operation during upshifting and downshifting is more responsive without increased harshness.

The Transmission Control Module (TCM) continuously checks for electrical problems, mechanical problems, and some hydraulic problems. When a problem is sensed, the TCM stores a diagnostic trouble code (DTC). Some of these codes cause the transmission to go into

9limp-in9 or 9default9 mode.

The 45RFE/545RFE has three default modes:

(I) Immediate shutdown - The TCM deenergizes the transmission control relay. This causes the transmission system to immediately default to third gear if shift lever is in the

9D9 position, or 2nd gear if it is in the

929 or 9L9 positions. Park, Neutral, and Reverse are still available.

(O) Orderly Shutdown - If the TCM recognizes a problem that does not require an immediate shutdown, the transmission will maintain the current gear and the transmission control relay will remain energized until de-energizing it will not overspeed the engine. When the vehicle speed reaches a reasonable level the TCM de-energizes the transmission control relay. This causes the transmission system to immediately default to third gear if shift lever is in the

9D9 position, or 2nd gear if it is in the

929 or 9L9 positions. Park, Neutral, and Reverse are still available.

(L) Logical Shutdown with Recovery - The

TCM does not de-energize the Transmission Control

Relay. Instead, the transmission will utilize 1st and

3rd gears while in

9D9, and will use 2nd while in 929 or

9L9. All transmission operation in this mode will be at a preset line pressure (open loop). The transmission will resume normal operation (recover) if the detected problem goes away. Three recoveries are permitted in a given key, after the fourth occurrence the operation described above will be maintained.

Once the DRBIII t is in the 9EATX9 portion of the diagnostic program, it constantly monitors the

TCM to see if the system is in limp-in mode. If the transmission is in limp-in mode, the DRBIII t will flash the red LED.

3.2.1

TRANSMISSION OPERATION AND

SHIFT SCHEDULING AT VARIOUS

OIL TEMPERATURES

The transmission covered in this manual has unique shift schedules depending on the temperature of the transmission oil. The shift schedule is modified to extend the life of the transmission while operating under extreme conditions.

The oil temperature is measured with a Temperature Sensor on the 45RFE/545RFE transmission.

The Temperature Sensor is an integral component of the Transmission Range Sensor (TRS). If the

Temperature Sensor is faulty, (DTC P-1799) the transmission will default to a

9calculated9 oil temperature. Oil temperature will then be calculated using engine coolant temperature, battery/ambient temperature, and engine off time from the Body

Control Module (BCM). These inputs are received from the communication bus periodically and are used to initialize the oil temperature at start up.

Once the engine is started, the TCM updates the transmission oil temperature based on torque converter slip speed, vehicle speed, gear, and engine coolant temperature to determine an estimated oil temperature during vehicle operation. Vehicles using

9calculated oil temperature9 track oil temperature reasonably accurately during normal operation. However, if a transmission is overfilled, a transmission oil cooler becomes restricted, or if a customer drives aggressively in low gear, the calculated oil temperature will be inaccurate. Consequently the shift schedule selected may be inappro-

2

priate for the current conditions. The key highlights of the various shift schedules are as follows:

Extreme Cold: Oil temperature below -27°C

(-16°F)

Goes to

9Super Cold9 schedule when temp rises above -24°C (-12°F) oil temperature

Park, Reverse, Neutral and 1st and 3rd gear only

No Torque Converter Clutch engagement

Super Cold: Oil temperature between -27°C

(-16°F) and -17°C (0°F)

Goes to

9Cold9 schedule above -12°C (10°F) oil temperature

Delayed 2-3 upshift

Delayed 3-4 upshift

Early 4-3 coastdown shift


No 3-1 coastdown or kickdown

High speed 4-2, 3-2, 2-1 kickdown shifts are prevented


Cold: Oil temperature between -17°C (0°F) and 2°C

(36°F)

Goes to

9Warm9 schedule when temp rises above

4.4°C (40°F) oil temperature

Shifts at higher throttle openings will be early

High speed 4-2, 3-2, 2-1 kickdown shifts are prevented

Delayed 3-4 upshift


Torque Converter Clutch engagement allowed with sump temp greater than 18°C (65°F)

Warm: Oil temperature between 2°C (36°F) and

27°C (80°F)

Normal operation (upshifts, kickdowns, and coastdowns)


Hot (Normal operation): Oil temperature between 27°C (80°F) and 115°C (240°F)

Goes to

9Overheat9 schedule above 115°C (240°F) oil temperature

Reverts to

9Hot9 when temp falls below 110°C

(230°F)

Normal operation (upshifts, kickdowns, and coastdowns)

Normal Torque Converter Clutch engagement operation

Overheat: Oil temperature above 115°C (240°F) or engine coolant temperature above 118°C (244°F)

Reverts to

9Hot9 when temp falls below 110°C

(230°F) oil temp or

9Overheat9 above 115°C

(240°F) oil temp.

Delayed 2-3 upshift 40-51 km/h (25-32 MPH)

Delayed 3-4 upshift 66-77 km/h (41-48 MPH)

3rd gear FEMCC from 48-77 km/h (30-48 MPH)

3rd gear PEMCC from 43-50 km/h (27-31 MPH)

A DTC P0218 High Temperature Operation Activated will be set in the TCM.


Causes for operation in the wrong temperature shift schedule:

Extreme Cold or Cold shift schedule at start up:

Temperature Sensor or circuitry.

Overheat shift schedule after extended operation:

Operation in city traffic or stop and go traffic

Engine idle speed too high - Stuck AIS motor

Aggressive driving in low gear

Long idle time in drive position

Trailer towing in OD gear position (use

939 position if frequent shifting occurs)

Cooling system failure causing engine to operate over 110°C (230°F)

Engine coolant temperature stays low too long - If engine coolant temperature drops below

66°C (150°F), the transmission will disengage

EMCC. Extended operation with the EMCC disengaged will cause the transmission to overheat.

Brake switch or circuitry - The TCM disengages the TCC when it receives a signal from the

PCM that the brake has been depressed. A problem with the brake switch or circuitry will cause the EMCC to disengage. Extended operation with the EMCC disengaged will cause the transmission to overheat.

Transmission fluid overfilled

Transmission cooler or cooler lines restricted

Engine cooling fan inoperative

Temperature Sensor or circuitry.

3.2.2

LINE PRESSURE CONTROL

Proper control of the transmission line pressure is essential for proper operation. The 45RFE/

545RFE normally uses closed loop line pressure control, where actual line pressure (reported by the line pressure sensor) is continuously monitored.

The TCM determines the desired (target) line pressure which is required, and adjusts the Pressure

Control Solenoid (PCS) until the actual line pressure matches the desired line pressure value. In the event of a line pressure sensor failure DTC

P0932(CA), the TCM changes to an open loop control at an essentially constant line pressure.

Proper diagnosis of line pressure systems is facilitated by the use of a special tool (T-fitting - Miller

#8259) which allows the use of a mechanical pressure gauge to compare the line pressure sensor reading on the DRBIII t to the gauge pressure.

Technicians should compare the mechanical gauge reading with the

9actual9 and 9desired9 line pressure reading on the DRBIII t. All three readings should closely match in pressure. Because the mechanical and actual line pressure may not match the desired at low engine speeds (due to low pump output RPM), line pressure should always be checked at 1500 - 2000 RPM.

3


c c c

Typical Line Pressure problems include:

Mechanical and

9actual9 readings both less than desired

– If the mechanical and

9actual9 readings do not increase significantly as engine speed is raised above 2000 RPM, the pressure control solenoid is usually at fault. The pressure control solenoid is usually accompanied by DTC’s

P0867(C8) and P0868(C9). The PCS is located in the Transmission Solenoid/TRS assembly.

– If the mechanical and

9actual9 readings vary with engine speed (above 2000 RPM), the fault is often a sticking main regulator valve. This valve is located in the transmission pump assembly.

9Actual9 reading on the DRBIIIt differs from the

Mechanical Pressure reading (higher or lower) by more than 69 kPa (10 PSI). This is sometimes accompanied by a DTC P0869(CB). The fault is usually in the Line Pressure Sensor or the Line

Pressure Sensor Wiring.

All three readings match, but the

9actual9 reading exhibits momentary intermittent pressure increases to 1724 kPa (250 PSI). The line Pressure Sensor is usually the problem. This will cause erratic shift quality (particularly a harsh

3-1 coast down shift), repair by replacing the

Line Pressure Sensor.

3.2.3

DRIVE LEARN PROCEDURE

Procedure To Learn A Smooth 1st Neutral

To Drive Shift:

Perform this procedure only if the complaint is for a delayed or harsh shift the first time the transmission is put into gear after the vehicle is allowed to set with the engine not running for at least 10 minutes. Use the following steps to have the TCM learn the 1st N-1 UD CVI.

NOTE: The transmission oil temperature must be between 80 - 110°F (27 - 43°C).

1. Start the engine only when the engine and ignition have been off for at least ten (10) minutes.

2. With the vehicle at a stop and the service brake applied, record the UD CVI while performing a

Neutral to Drive shift. During the shift, the UD

CVI will temporarily show a different value which is the 1st N-1 UD CVI. The 1st N-1 UD

CVI account for air entrapment in the UD clutch that may occur after the engine has been off for a period of time.

3. Repeat steps 1 and 2 until the recorded 1st N-1

UD CVI value stabilizes.

NOTE: It is important that this procedure be performed when the transmission temperature is between 80 - 110°F (27 - 43°C). If this procedure takes too long to complete fully for the allowed transmission oil temperature, the vehicle may be returned to the customer with an explanation that the shift will improve daily during normal vehicle usage. The TCM also learns at higher oil temperatures, but these values (line pressure correction values) are not available for viewing on the

DRBIII

T

.

Procedure To Learn A Smooth Neutral To

Drive Garage Shift:

Perform this procedure if the complaint is for a delayed or harsh shift when the transmission is put into gear after the vehicle has had its first shift. Use the following steps to have the TCM learn the N-1

UD CVI.

NOTE: The transmission oil temperature must between 80 - 110°F (27 - 43°C) to learn the UD CVI. Additional learning occurs at temperatures as low as 0°F and as high as

200°F. This procedure may be performed at any temperature that experiences poor shift quality. Although the UD CVI may not change, shift quality should improve.

1. Start the vehicle engine and shift to drive.

2. Move the vehicle forward to a speed of at least

16 km/h (10 MPH) and come to a stop. This ensures no air is present in the UD hydraulic circuit.

3. Perform repeated N-1 shifts at a stop while pausing in Neutral for at least 2-3 seconds and monitor UD CVI volume until the value stabilizes. The value will change during the N-D shift.

This is normal since the UD value is different for the N-1 shift then the normal value shown which is used for 4-3 coastdown and kickdowns. Perform repeated shifts in this temperature range until the UD CVI value stabilizes and the N-1 shifts become smooth.

4. This procedure may be performed at any temperature that experiences poor N-1 shift quality.

Although the UD CVI may not changes, shift quality should improve.

Procedure To Learn The 1st 2-3 Shift After A

Restart Or Shift To Reverse:

Use the following steps to have the TCM learn the

1st 2-3 shift OD CVI.

4

NOTE: The transmission oil temperature must be above 80°F (27°C).

1. With the vehicle engine running, select reverse gear for over 2 seconds.

2. Shift the transmission to Drive and accelerate the vehicle from a stop at a steady 15 degree throttle opening and perform a 2-3 shift while noting the OD CVI. During the shift, a different value may appear on the screen, which is the 1st

2-3 OD CVI.

3. Repeat steps 1 and 2 until the 1st 2-3 upshift becomes smooth and the 1st 2-3 OD CVI stabilizes.

Procedure To Learn A Smooth 2-3 And 3-4

Upshift:


OD and 4C CVI’s.


1. Accelerate the vehicle from a stop at a steady 15 degree throttle opening and perform multiple

1-2, 2-3, and 3-4 upshifts. The 2nd 2-3 shift following a restart or shift to reverse will be shown during the shift as a value between the

1st 2-3 OD CVI and the normal OD CVI. Updates to the normal OD CVI will occur after the

2nd shift into 3rd gear, following a restart or shift to reverse.

2. Repeat step 1 until the 2-3 and 3-4 shifts become smooth and the OD and 4C CVI become stable.

Procedure To Learn A Smooth 4-3 Coastdown And Part Throttle 4-3 Kickdown:


UD shift volume.


1. At a vehicle speed between 64 - 97 Km/H

(40 - 60 MPH), perform repeated 4-3 kickdown shifts.

2. Repeat step 1 until the UD volume becomes somewhat stable and the shift becomes smooth.

Procedure To Learn A Smooth 1-2 Upshift and 3-2 Kickdown:


2C shift volume.


1. With a vehicle speed below 48 Km/H (30 MPH) and the transmission in 3rd gear, perform multiple 3-2 kickdowns.


2. Repeat step 1 until the 3-2 kickdowns become smooth and the 2C CVI becomes stable.

Procedure To Learn A Smooth Manual 2-1

Pulldown Shift As Well As A Neutral To Reverse Shift:


LR volume.


1. With the vehicle speed around 40 - 48 Km/H (25

- 30 MPH) in Manual 2nd, perform manual pulldowns to Low or 1st gear at closed throttle.

2. Repeat step 1 until the LR CVI become stable and the manual 2-1 becomes smooth.

Procedure To Learn A Smooth Neutral To

Reverse Shift:

Perform the following shifts.


1. With the vehicle at a stop, perform Neutral to

Reverse shifts until the shift is smooth. An unlearned Neutral to Reverse shift may be harsh or exhibit a double bump. If any of the shifts are still not smooth after the clutch volume stabilizes, an internal transmission problem may be present.

Procedure To Learn A Smooth 4-5 Upshift for 545RFE:


2CA CVI.


1. Accelerate the vehicle through 88 Km/H (55mph) at a steady 10-15 degree throttle opening and perform multiple 4-5 upshifts.

2. Repeat step 1 until the 4-5 shift become smooth and the 2C(A) CVI become stable. There is a separate 2C volume used and learned for 4-5 shifts, 2C(A). It is independent of the 2C CVI learned on 3-2 kickdowns.

3.3

DIAGNOSTIC TROUBLE CODES

Diagnostic trouble codes (DTC’s) are codes stored by the Transmission Control Module (TCM) that help us diagnose Transmission problems. They are viewed using the DRBIII t scan tool.

Always begin by performing a visual inspection of the wiring, connectors, cooler lines and the transmission. Any obvious wiring problems or leaks should be repaired prior to performing any diagnos-

5


tic test procedures. Some engine driveability problems can be misinterpreted as a transmission problem. Ensure that the engine is running properly and that no PCM DTC’s are present that could cause a transmission complaint.

If there is a communication bus problem, trouble codes will not be accessible until the problem is fixed. The DRBIII t will display an appropriate message. The following is a possible list of causes for a bus problem:

– open or short to ground/battery in PCI bus circuit (pin 43).

– internal failure of any module or component on the bus

Each diagnostic trouble code is diagnosed by following a specific testing sequence. The diagnostic test procedures contain step-by-step instructions for determining the cause of a transmission diagnostic trouble code. Possible sources of the code are checked and eliminated one by one. It is not necessary to perform all of the tests in this book to diagnose an individual code. These tests are based on the problem being present at the time that the test is run.

If the TCM records a DTC that will adversely affect vehicle emissions, it will request (via the communication bus) that the PCM illuminate the

Malfunction Indicator Lamp (MIL). Although these

DTC’s will be stored in the TCM immediately as a 1 trip failure, it may take up to five minutes of accumulated trouble confirmation to set the DTC and illuminate the MIL. Three consecutive successful OBDII/EUROIII trips or clearing the DTC’s with a diagnostic tool (DRBIII t or equivalent) is required to extinguish the MIL. When the TCM requests that the PCM illuminate the MIL, the

PCM sets a DTC ($89) to alert the technician that there are DTC’s in the TCM. This must also be erased in the PCM in order to extinguish the MIL.

3.3.1

HARD CODE

Any Diagnostic Trouble Code (DTC) that is set whenever the system or component is monitored is a HARD code. This means that the problem is there every time the TCM checks that system or component. Some codes will set immediately at start up and others will require a road test under specific conditions. It must be determined if a code is repeatable (Hard) or intermittent before attempting diagnosis.

3.3.2

ONE TRIP FAILURES

A One Trip Failure, when read from the TCM, is a hard OBDII/EUROIII code that has not matured to the full 5 minutes. This applies only to codes that will turn on the MIL after 5 minutes of substituted gear operation.

3.3.3

INTERMITTENT CODE

A diagnostic trouble code that is not there every time the TCM checks the circuit or function is an

9intermittent9 code. Some intermittent codes, such as codes P0932(CA), P0891(14), P0888(15),

P0725(18), P1694(19), P0841(81), P0846(82),

P0871(84), P0988(88), P0876(90), P0750(C1),

P0755(C2), P0760(C3), P0770(C4), P0765(C5),

P2706(C6), P1793(48), P0715(56), P0720(57),

P1794(58), and P1799(74) are caused by wiring or connector problems. However intermittent codes

P0731(51), P0732(52), P0733(53), P0734(54),

P0736(50), P0735(59), P1736(55) (Speed ratio codes) are usually caused by intermittent hydraulic seal leakage in the clutch and/or accumulator circuits. Intermittent speed ratio codes can be set by intermittent speed sensor circuitry or by line noise being induced onto one or both of the speed sensor signal circuits. Problems that come and go like this are the most difficult to diagnose, they must be looked for under the specific conditions that cause them.

3.3.4

STARTS SINCE SET COUNTER

The Starts Since Set counter counts the number of times the vehicle has started since the most recent DTC was set. The counter will count up to

255 starts. Note that this counter only applies to the last code set.

When there are no diagnostic trouble codes stored in memory, the DRBIII t will display 9NO DTC’s

PRESENT

9 and the reset counter will show

9STARTS SINCE CLEAR9 = XXX.

The number of starts helps determine if the diagnostic trouble code is hard or intermittent.

– If the number of starts is less than 3, the code is usually a hard code.

– If the number of starts is greater than 3, it is considered an intermittent code. This means that the engine has been started most of the time without the code recurring.

3.3.5

TROUBLE CODE ERASURE

A Diagnostic trouble code will be cleared from

TCM memory if it has not reset for 40 warm-up cycles.

A warm-up cycle is defined as

9sufficient vehicle operation such that the coolant temperature has risen by at least 22°C (40°F) from engine starting and reaches a minimum temperature of 71°C

(160°F). The Malfunction Indicator Lamp (MIL) will turn off after 3 good trips or when the DTC’s are cleared from the TCM.

6


3.3.6

LIST OF DIAGNOSTIC TROUBLE CODES (DTC) (Detailed descriptions follow list)

P0218

P0884

P0890

P0841

P0846

P0871

P0988

P0876

P0845

P0870

P0987

P0875

P0750

P0732

P0733

P0734

P1736

P0715

P0720

P1794

P0735

P2700

P2701

P2702

P2703

P2704

P1715

P1799

90

A2

A4

A8

B0

C1

75

76

80

81

82

84

88

60

61

62

63

64

65

74

56

57

58

59

52

53

54

55

37

38

45

47

48

50

51

17

18

19

28

29

35

36

The TCM may report any of the following DTC’s.

DTC

11

12

13

14

15

16

P-Code Name of Code

P0613 Internal TCM

P1684

P0613

P0891

P0888

P0605

Battery was disconnected

Internal TCM

Relay output always on

Relay output always off

Internal TCM

P0604

P0725

P1694

P0706

P0120

P0944

P1790

P1775

P0740

P0613

P1776

P1793

P0736

P0731

Internal TCM

Engine speed sensor circuit

Bus communication with engine module

Check shifter signal

Throttle position sensor signal circuit

Loss of prime

Fault immediately after shift

Solenoid switch valve latched in TCC position

Torque converter clutch control circuit

Internal TCM

Solenoid switch valve latched in L-R position

TRD link communication error

Gear ratio error in reverse

Gear ratio error in 1st

Gear ratio error in 2nd

Gear ratio error in 3rd

Gear ratio error in 4th

Gear ratio error in 2nd Prime

Input speed sensor error

Output speed sensor error

Speed sensor ground error

Gear ratio error in 4th Prime

Inadequate Element Volume LR

Inadequate Element Volume 2C

Inadequate Element Volume OD

Inadequate Element Volume UD

Inadequate Element Volume 4C

Restricted Port in T3 Range

Calculated Oil temperature in use

High temperature operation activated

Power up at speed

Switched battery

L-R pressure switch sense circuit

2C pressure switch sense circuit

OD pressure switch sense circuit

4C pressure switch sense circuit

UD pressure switch sense circuit

2C hydraulic pressure test failure

OD hydraulic pressure test failure

4C hydraulic pressure test failure

UD hydraulic pressure test failure

L-R solenoid circuit

No

No

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

Yes

No

Yes

Yes

Yes

Yes

No

No

No

No

No

Limp-in MIL

Yes Yes

No

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

No

Yes

Yes

No

No

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

7


The TCM may report any of the following DTC’s.

DTC P-Code Name of Code

C2

C3

C4

C5

C6

C8

C9

P0755

P0760

P0770

P0765

P2706

P0867

P0868

2C solenoid circuit

OD solenoid circuit

4C solenoid circuit

UD solenoid circuit

MS solenoid circuit

Line pressure fault

Line pressure low

Limp-in MIL

Yes

Yes

Yes

Yes

Yes

No

No

CA

CB

P0932

P0869

Line pressure sensor fault

Line pressure high

No

No

No

No

Yes (underlined) indicates that this DTC can take up to five minutes of problem identification before illuminating the MIL.

Yes

Yes

Yes

Yes

Yes

No

No

3.3.7

DTC DESCRIPTIONS

Name of code: P0604, P0605, P0613(11, 13, 16, 17 or 45) - Internal Controller

When monitored: Whenever the key is in the Run or Run/Start position.

Set condition: This code is set whenever Transmission Control Module (TCM) senses an internal error

Theory of operation: The TCM is constantly monitoring it’s internal processor. If an internal problem is detected, this DTC will be set. This DTC can also be set by a bad ground to the TCM and/or

Trans Control Relay. In fact, this DTC is rarely set due to a TCM error, it is usually set by a poor ground.

Transmission Effects: The MIL will illuminate

(this DTC can take up to five minutes of problem identification before illuminating the MIL) and the transmission system will default to the Immediate

Shutdown routine.

Possible causes:

> TCM ground circuit. (check main ground attachment to engine block)

> Relay ground circuit. (check main ground attachment to engine block)

> TCM

Name of code: P1684(12) - Battery was Disconnected (Info Only)

When monitored: Whenever the key is in the Run or Run/Start position.

Set condition: This code is set whenever Transmission Control Module (TCM) is disconnected from battery power (B+) or ground. It will also be set during the DRBIII t Quick Battery Disconnect procedure.

Theory of operation: A battery backed RAM

(Random Access Memory) is used to maintain some learned values. When the battery B(+) is disconnected, the memory is lost. When the B(+) is restored, this memory loss is detected by the TCM.

The code is set and the learned values are initialized to known constants or previously learned values from EEPROM (Electronic Erasable Programmable Read Only Memory). This results in the reinitialization of some parameters.

Transmission Effects: Loss of trouble code data.

The Transmission system will default to the Immediate shutdown routine if power is lost while operating the vehicle. Normal operation is resumed if the power is restored during the same key start.


> Battery voltage removed from TCM (Fused

B+)

> TCM disconnected

> Dead Battery

> Low battery voltage during cranking

> Quick Battery Disconnect by DRBIII t or

MDS

> Bad TCM ground circuit.

Name of code: P0891(14) - Relay Always On

When monitored: When ignition key is turned from

9off9 position to 9run9 position and/or ignition key is turned from

9crank9 position to 9run9 position.

Set condition: This code is set if the Transmission

Control Module (TCM) senses greater than 3 volts at the Trans Control Relay Output terminal(s) of the TCM prior to the TCM energizing the relay.

Theory of operation: The transmission control relay is used to supply power to the solenoids and pressure switches when the transmission is in normal operating mode. The relay output is fed back to the TCM through pins 16, 17, and 36. It is referred to as

9Transmission Control Relay Output

9. This circuit does not supply power to the

TCM, it is only a sense circuit. When the relay is off, no power is supplied to the solenoids and pressure switches, and the transmission is in


8



Shutdown routine.


> Short to voltage in the Transmission

Solenoid/TRS Assembly (internal into any solenoid control circuit)

> Short to voltage on any solenoid control circuit

> Relay contacts stuck together.

> Short to voltage in Transmission Control Relay output circuit(s).

> Short to voltage in Transmission Relay Control circuit.

> Short to voltage on any pressure switch sense circuit.

> TCM connector problems.

> TCM.

Name of code: P0888(15) - Relay Output Always

Off

When monitored: Continuously

Set condition: This code is set when less than 3 volts are present at any transmission control relay output (pins 16,17 or 36) circuits at the Transmission Control Module (TCM) when the TCM is energizing the relay.

Theory of operation: The Transmission Control

Relay is used to supply power to the solenoids and pressure switches when the transmission is in normal operating mode. The relay output is fed back to the TCM through pins 16, 17, and 36. It is referred to as

9Transmission Control Relay Output

9. This circuit does not supply power to the

TCM, it is only a sense circuit. When the relay is off, no power is supplied to the solenoids and pressure switches, and the transmission is in


After a controller reset (ignition key turned to the

9run9 position or after cranking engine), the controller energizes the relay. Prior to this the

TCM verifies that the contacts are open by checking for no voltage at the switched battery terminals. After the relay is energized, the TCM monitors the terminals to verify that the voltage is greater than 3 volts.



Shutdown routine.


> Transmission Control Relay (intermittent relay function caused by oxidized or contaminated relay contacts)


> Short to ground or open circuit in the transmission control relay output circuit(s)

> Short to ground or open circuit in the Transmission Solenoid/TRS assembly

> TCM connector problem

> Relay connector problem

> Relay Ground circuit

> TCM Ground circuit(s)

> TCM

Name of code: P0725(18) - Engine Speed Sensor

Circuit

When monitored: Continuously with engine running.

Set condition: This code is set when the engine speed calculated by the Transmission Control Module (TCM) is less than 390 RPM, while the engine speed broadcast by the PCM is greater than 383

RPM. The DTC also sets if the calculated engine speed is greater than 8000 RPM for more that 2.0

seconds. Theory of operation: The TCM uses the crank sensor signal to calculate engine RPM. The

TCM uses RPM data from the PCM which is broadcast over the communication bus to determine if the engine is running. The TCM continuously compares calculated engine speed to the engine RPM reported on the bus, by the PCM, so that loss of crankshaft position sensor signal to the

TCM will not be misinterpreted as engine not running.


(this DTC can take up to five minutes of problem identification before illuminating the MIL) and the transmission system will default to the Logical

Shutdown routine.


> Open or short in engine speed sensor circuit.

(Crank sensor signal)

> TCM connector problems (Crank sensor signal or sensor ground terminals)

> Open or short in sensor ground circuit

> Low engine idle speed

> TCM

> PCM.

Name of code: P1694(19) - Bus Communication with Engine Module

When monitored: Continuously with key on.

Set condition: If no bus messages are received from the Powertrain Control Module (PCM) for 10 seconds.

Theory of operation: The TCM communicates with the PCM using the communication bus. It relies on certain information to function properly.

The TCM continuously monitors the bus to check for messages broadcast from the PCM.

9


Transmission Effects: Delayed 3-4 shifts. No

EMCC and early 3-4 shifts for a few minutes after engine is started. Generally poor shift quality.


> Open or shorted bus circuit

> TCM

> PCM

Name of code: P0706(28) - Check Shifter Signal

When Monitored: Continuously with the key on.

Set Condition: Any occurrences of an invalid

PRNDL code which lasts for more than 0.028

second.

Theory of Operation: The C1 through C5 (TRS T1,

TRS T2, TRS T3, TRS T41, and TRS T42) sense circuits communicate the shift lever position to the TCM. Each circuit is terminated at the transmission with a switch.

Each switch can be either open or closed, depending on the shift lever position. The TCM can decode this information and determine the shift lever position. Each shift lever position has it own unique combination of closed and open switches. This is called a PRNDL code. There are 5 switches, therefore: there are many possible combinations of open and closed switches (codes). There are

12 valid codes, two for neutral, one for each other gear position (5), and five temporary (transition zone) codes.

The remainder of the codes should never occur, these are called invalid codes.

Transmission Effects and possible causes:

(This code alone will not illuminate the MIL)

> Excessive metal debris in the tranmsission oil pan

> Worn Code Plate. Check for heavy wearing by

TRS switch contacts

> Intermittent C1 through C5 (T1, T2, T3, T41 or T42) circuits. Check for corrosion, terminal push-outs or spread terminals at 60-way

TCM connector and/or 23-way transmission connector.

> TRS connector not plugged in, or unplugged with the key on.

> TRS C1 through C5 (T1, T2, T3, T41, or T42) circuit(s) are either open, shorted to ground, or shorted to 12 volts.

> TRS

> TCM

NOTE: If you are using the transmission simulator and do not push the OD off button in the vehicle when performing a Shift Lever position test, you will receive a code 11 OD lockout stuck open.

10

Name of code: P0120(29) - Throttle Position Signal

When monitored: Whenever the engine is running.

Set condition: This code is set if the throttle angle goes out of range or changes erratically i.e. faster than the throttle body motion should occur.


Module (TCM) receives the throttle position signal from the Throttle Position Sensor (TPS). The TPS has a 5-volt pull up supplied from the Powertrain

Control Module (PCM). The signal is checked for out-of-range as well as intermittent (excessive signal changes).

Transmission Effects: The MIL will illuminate, the transmission system will not go into limp-in mode. The TCM will use a

9calculated throttle angle

9 supplied by the PCM over the communication bus. If the communication bus is unavailable, the TCM will use a default throttle angle of 24( degrees for the key start in which the code was set.

The TCM will try to use the TPS signal again on the next key start. The vehicle may experience extremely erratic transmission shifting just prior to setting the code. If the intermittent does not last long enough to set the code, the customer will say that the transmission violently hunts between gears.


> Open or shorted TPS signal and/or ground circuits

> TCM connector problems

> Failed TPS or TPS connector (Check PCM

DTC’s)

> PCM

> TCM

Name of code: P0944(35) - Loss Of Prime

When monitored: If the transmission is slipping in any forward gear and all the pressure switches are indicating no pressure, a loss of prime test is run.

Set condition: If the transmission begins to slip in any forward gear, and all pressure switches are open, a loss of prime test begins. All available elements are momentarily turned on by the Transmission Control Module (TCM) to see if pump prime exists. The code is set if none of the pressure switches respond. The TCM will continue to run the loss of prime test until pump pressure returns.

Note: Loss of Prime test is not run when transmission temperature is

9Super Cold9.

Theory of operation: The loss of prime test is used to prevent transmission defaults, which can be caused by a lack of pump prime.

Transmission Effects: Vehicle will not move or transmission slips. Normal operation will continue if pump prime returns.

11



> Low transmission fluid level

> Transmission fluid filter improperly installed

(Seal installed onto filter neck instead of into pump bore, seal not fully seated against pump bore housing, filter neck not engaged into pump, bolts loose or O-ring missing or damaged)

> Transmission fluid filter clogged, damaged or cracked

> Transmission has massive hydraulic leak

(valve body pipe plugs missing, etc.)

> Transmission oil pump

> Transmission oil pump drive is sheared or damaged

> PRNDL indicates a valid OD code in the hydraulic reverse position

Name of code: P1790(36) - Fault Immediately

After Shift

When monitored: When a speed ratio error DTC

(50 through 55) is stored.

Set condition: This code is set if the associated speed ratio code is stored within 1.3 seconds after a shift.

Theory of operation: This code will only be stored along with a 50 series code. If this code is set, it indicates a probable hydraulic (line pressure) or mechanical problem exists. When this code is set, diagnosing the transmission should be based on the associated speed ratio code and mechanical causes should be considered first.

Transmission Effects: None


> Mechanical causes as listed under associated speed ratio code.

> Inadequate line pressure

> Cut or damaged clutch piston seals

Name of code: P1775(37) - Solenoid Switch Valve

Latched in TCC Position

When monitored: During an attempted shift into

1st gear.

Set condition: This code is set if 6 unsuccessful attempts are made to get into 1st gear, with transmission temp above 27°C (80°F), in one given key start.

Theory of operation: The solenoid switch valve

(SSV) controls the direction of the transmission fluid when the L-R solenoid is energized. The SSV will be in the downshifted position in 1st gear, thus directing the fluid to the L-R clutch circuit. In 2nd,

3rd, and 4th, it will be in the upshifted position and directs the fluid into the torque converter clutch

(TCC). When shifting into 1st gear, a special hydraulic sequence is performed to ensure SSV movement into the downshifted position. The L-R pres-


sure switch is monitored to confirm SSV movement. If movement is not confirmed (the L-R pressure switch does not close), EMCC is inhibited until SSV operation is confirmed.

Transmission Effects: Transmission will have

1st gear, and no EMCC operation. The MIL will illuminate after 5 minutes of no EMCC operation.


> Valve body - Solenoid Switch Valve stuck in

TCC position

> L-R solenoid armature or plunger broken

(should also set DTC P0841 (81) and often sets P0740 (38)

> Solenoid malfunction - may also set code

P0841(81)

> L-R Pressure Switch Sense circuit shorted to battery

> High idle speed

> PRNDL indicates a valid OD code in the hydraulic reverse position

Name of code: P0740(38) - Torque Converter

Clutch Control Circuit

When monitored: During Electronically Modulated Converter Clutch (EMCC) Operation

Set condition: The code will be set if one of the following events happens three times in a given key start, at a throttle angle less than 30° a) With the transmission in EMCC, the TCC/L-R solenoid achieves the maximum duty cycle and is still unable to pull the engine speed within 60 RPM of input speed. b) With the transmission in FEMCC, the TCC RPM (Engine speed - Input speed) is more than 100 RPM for 7.2 seconds.

Theory of operation: When in 2nd, 2nd Prime,

3rd, or 4th gear, the torque converter clutch (TCC) can be engaged when certain conditions are met.

The TCC piston is electronically modulated by increasing the duty cycle of the L-R solenoid until the torque converter slip difference (difference between engine and transmission input speed) is within 60 RPM. Then the L-R solenoid is fully energized (FEMCC / 100 duty cycle). Torque converter slip is monitored in FEMCC to ensure adequate clutch capacity.

Transmission Effects: EMCC will still be available after code is set. MIL will illuminate after 5 minutes of accumulated slip in FEMCC. The transmission will attempt normal operation (no limp-in) even after the MIL is illuminated.


> Cut converter hub O-ring and/or failed torque converter - both should be replaced during a rebuild with code P0740(38) present.

> Sticky CC Regulator valve

Name of code: P1776(47) - Solenoid Switch Valve

(SSV) Latched in L-R Position

When monitored: Continuously when doing partial or full EMCC (PEMCC or FEMCC)

Set condition: If the transmission senses the L-R pressure switch closing while performing PEMCC or FEMCC. This code will be set after four unsuccessful attempts to perform PEMCC or FEMCC.

Theory of operation: The solenoid switch valve

(SSV) controls the direction of the transmission fluid when the L-R solenoid is energized. SSV will be in the downshifted position in 1st gear, thus directing the fluid to the L-R clutch circuits. In

2nd, 3rd, and 4th, the SSV will be in the upshifted position and directs the fluid into the torque converter clutch (TCC). When doing PEMCC or

FEMCC, the L-R pressure switch should indicate no pressure if the SSV is in the TCC position. If the

L-R pressure switch indicates pressure while in

PEMCC or FEMCC, EMCC operation is aborted and inhibited to avoid inadvertent application of the L-R clutch. Partial EMCC will be attempted if the L-R pressure switch does not indicate pressure.

Four occurences of detection of L-R pressure results in setting the code.

Transmission Effects: EMCC is inhibited and the transmission system will default to the Orderly

Shutdown routine. (this DTC can take up to five minutes of problem identification before illuminating the MIL).


> Valve body - Solenoid Switch Valve stuck in

L-R position

> Intermittent short to ground or open circuit in L-R Pressure Switch Sense circuit (with code P0841 only)

> Solenoid/TRS assembly (with code P0841(81) only)

> TCM (with code P0841(81) only)

Name of Code: P1793(48) - Torque Reduction

(TRD) Link Communication Error

When Monitored: During torque managed shifts

(Throttle angle above 54 degrees). This system is also tested whenever the vehicle is stopped and the engine speed is below 1000 RPM.

Set condition: This code is set when the Transmission Control Module (TCM) sends two subsequent torque reduction messages to the Powertrain

Control Module (PCM) via the TRD link circuit and does not receive a confirmation from the PCM over the communication bus.

Theory of Operation: During high torque shifts the TCM will send a message requesting that the

PCM reduce engine power until the shift is completed. This message is sent from the TCM to the

PCM across the Torque Management Request

Sense Circuit. The PCM will acknowledge the TCM request by sending a confirmation message across the communication bus. The TRD Link communi-

12

cation is also tested periodically for operation whenever the engine is running and the vehicle is not moving with zero degrees throttle.

Transmission Effects: Maximum throttle angle used by TCM will be 54 degrees. As a result a customer may complain about loss of performance, short shifting when driving aggressively, and/or normal shifting and WOT shifts may be harsh.

Possible Causes:

> Sticky Throttle Position Sensor (TPS)

> Wiring or Connector problems in the Torque

Management Request Sense Circuit

> Bus communication problems.

> PCM

> TCM

Name of code:

P0736(50) - Gear Ratio Error in Reverse

P0731(51) - Gear Ratio Error in 1st

P0732(52)- Gear Ratio Error in 2nd

P0733(53) - Gear Ratio Error in 3rd

P0734(54) - Gear Ratio Error in 4th

P1736(55) - Gear Ratio Error in 2nd Prime

P0715(56) - Input Speed Sensor

P0720(57) - Output Speed Sensor

P1794(58) - Speed Sensor Ground

P0735(59) - Gear Ratio Error in 4th Prime

When monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.

Set condition: This code is set if the gear ratio is not correct for the current gear.

– Codes 50 through 59 sets if the ratio of the input RPM (Nt) to the output RPM (No) does not match the current gear ratio.

– Code 56 sets if there is an excessive change in input RPM in any gear

– Code 57 sets if there is an excessive change in output RPM in any gear

– Code 58 sets after a TCM reset in neutral and

Nt/No equals a ratio of input to output of 2.00

Theory of operation: The transmission system uses two speed sensors, one to measure input RPM and one to measure output RPM. These inputs are essential for proper transmission operation. Therefore, the integrity of this data is verified through the following checks:

1. When in gear, if the gear ratio does not compare to a known gear ratio, the corresponding in-gear trouble code is set (codes 50 through 59).

2. An excessive change in input or output speeds indicating signal intermittent will result in codes 56 and/or 57 being set.

3. If the common speed sensor ground circuit is lost, both sensor inputs will read the signal from the input speed sensor at idle in neutral. Since


the input speed sensor has 60 teeth and the output speed sensor has 30 teeth, this results in a ratio of 2.00.

Transmission Effects: If a gear ratio error develops, the appropriate code is set as a one trip failure and the 5 minute Intelligent Recovery Timer (IRT) is started. The transmission will then substitute a

1-3 or 3-1 shift to a different gear for the one in which the problem was identified. For example, if a problem is identified while in first gear, the transmission will shift to third gear. The IRT is only counting up while the transmission is substituting one gear for another. Using the previous example, if the vehicle continued down the road and shifted to fourth gear for a long period of time, the IRT would have only counted the time that the transmission was in third gear instead of second. The

MIL will illuminate (this DTC can take up to five minutes of problem identification before illuminating the MIL). The transmission system will default to the Logical Shutdown without Recovery routine after 5 minutes of substituted gear operation or if three gear ratio error events occur in a given key start.


Code P0736(50) - Excludes gear train failures which should be obvious upon disassembly

> If code P0944(35) or any line pressure DTC’s are set, diagnose these first

> Valve body - #3 check ball

> L-R switch valve sticking - may also set code

P0731(51)

> Speed sensor or associated wiring - may also set codes P0731(51), P0715(56), or P0720(57)

> Multi Select Solenoid sticking or leaking

> Failed or slipping L-R clutch - may also set code P0731(51)

– L-R seal leakage (Intermittent no drive or reverse)

– Sticky L-R accumulator seals (Intermittent no drive or reverse)

> Failed reverse clutch (hard code)

– OD/Rev lip seal leakage

– Worn reaction shaft support seal rings



> Valve body - #1, #2, and/or #4 check ball

> L-R switch valve sticking


> Solenoid/TRS assembly (stuck solenoid(s))

> Failed or intermittent slipping UD clutch may also set P0732(52) or P0733(53)

13


– UD seal leakage

– Sticky UD accumulator seals - Worn reaction shaft support seal rings

> Failed or slipping L-R clutch - may have code

P0736(50)

– L-R seal leakage

– Sticky L-R accumulator seals

Code P0732(52) – Excludes gear train failures which should be obvious upon disassembly


> Valve body - #1, #2, #4, #5 and/or #7 check ball

> Solenoid/TRS assembly - may also set codes

P0846(54) and/or P0845(A2)

> Failed or slipping 2nd clutch - 2nd clutch seal leakage - Sticky 2nd clutch accumulator seals

> Failed or intermittent slipping UD clutch may also set code P0731(51) and/or P0733(53)

– UD clutch seal leakage

– Worn input hub bushing

– Sticky UD clutch accumulator seals


Code P0733(53) - Excludes geartrain failures which should be obvious upon disassembly


> Valve body - #1, #2, and/or #6 check ball



P0871(84) and/or P0870(A4)

> Failed or slipping OD clutch - may also set code P0734(54)

– OD clutch inner and outer lip seal leakage

– Sticky OD clutch accumulator seals


> Failed or intermittent slipping UD clutch may also set codes P0731(51) and/or

P0732(52)

– UD seal leakage




Code P0734(54) – Excludes gear train failures which should be obvious upon disassembly


> Valve body - #1, #2, #5 and/or #6 check ball



P0988(88) and/or P0987(A8)

> Failed or slipping OD clutch - may also set code P0733(53)

– OD clutch inner and outer lip seal leakage

– Sticky OD clutch accumulator seals


> Failed or intermittent slipping 4th clutch

– 4th clutch seal leakage

– Sticky 4th clutch accumulator seals




> Valve body - #1, #4 and/or #5 check ball



P0876(90) and/or P0875(B0)

> Failed or intermittent slipping UD clutch may also set codes P0731(51) and/or

P0732(52)

– UD seal leakage




> Failed or intermittent slipping 4th clutch

– 4th clutch seal leakage

– Sticky 4th clutch accumulator seals


Codes P0715(56) and P0720(57)

> Failed input or output speed sensor

> Shorted or open wiring between TCM and speed sensor(s)

> Connector problems at 60-way TCM connector and/or speed sensor connector(s)

> Transmission Solenoid/TRS Assembly has an internal short to the Speed Sensor Ground circuit (should also set a P1794 and P1799).

Code P1794(58)

> Open or shorted speed sensor ground (speed sensor ground is different from chassis ground)

> Open or shorted Temperature Sensor wiring to TRS

> Transmission Solenoid/TRS Assembly has an internal short to the Speed Sensor Ground circuit

> TRS - Will also set code P1799(74)

> TCM



14

> These codes may also be set with the DTC -

P1790(36), P0846(82), P0871(84), P0845(A2),

P0870(A4), perform these diagnostics first.


> Solenoid/TRS assembly (stuck solenoid(s))

> Failed or slipping OD clutch

OD seal leakage

> Failed or slipping 2C clutch

2C seal leakage

Name of Code: P2700, P2701, P2702, 2703, 2704

(60, 61, 62, 63, 64) - Inadequate Element Volume

When Monitored: Whenever the engine is running, the clutch volume is updated during the requested shift.

Set condition:

Note: Transmission temperature must be

43°C (110°F) to update all volumes.

> P2700 - When the LR volume falls below 16, the LR volume is updated during a 3-1 or 2-1 manual downshift with the TPS angle below

5 degrees.

> P2701 - When the 2C volume falls below 5, the 2C volume is updated during a 3-2 kickdown with the TPS angle between 10 and 54 degrees.

> P2702 - When the OD volume falls below 5, the OD volume is updated during a 2-3 upshift with the TPS angle between 10 and 54 degrees.

> P2703 - When the UD volume falls below 11, the UD volume is updated during a 4-3 kickdown with the TPS angle between 30 and 54 degrees.

> P2704 - When the 4C volume falls below 30, the 4C clutch volume is updated when doing a 3-4 shift with throttle angle between 10° and 54°. The transmission temperature must be above 43°C (110°F). The clutch volume should be between 30 and 85.

Theory of Operation: The volumes of the transmission fluid needed to apply the friction elements are continuously monitored and learned for adaptive controls. As the clutch friction material wears, the volume of fluid needed to apply the clutch increases. The following are typical clutch volumes, the clutches may be damaged if the volumes are greater or less than the specified below:

2C clutch volume - between 25 and 85

OD clutch volume - between 30 and 100

4C clutch volume - between 30 and 85

UD clutch volume - between 30 and 100

Transmission Effects: These codes usually set with other DTC’s, which indicates an internal transmission problem.


15


> Clutch pack clearance out of spec

> Snap ring out of position or broken

> Broken return spring

> Hydraulic leak into clutch circuit with nearzero volume

Name of Code: P1715(65) - Restricted Port in T3

Range

When Monitored: Whenever the Engine is running and the Manual valve is in the T3 range.

Set condition: The code is set if the conditions for a code 47 are present when the manual valve is in the T3 range.

Theory of Operation: The conditions to set a

DTC 47 are easily satisfied while in the T3 range.

There is no problem with the transmission itself if this code is set.

Transmission Effects: The transmission will go into neutral when this code is set. If the driver puts the shifter in neutral and back to drive, the transmission will operate normally.


> Manual linkage out of adjustment, causing

T3 range while shifter is in OD.

> Driver resting hand on shift lever while driving, causing T3 range.

Name of Code: P1799(74) - Calculated Oil Temp in Use

When Monitored: Whenever the Engine is running.

Set condition: The code is set if any of the following conditions exist for three consecutive key starts:

> The Temperature Sensor voltage is out of range (below 0.07 volts or greater than 4.94

volts)

> Continuous erratic Temperature Sensor voltage is sensed.

> The Temperature Sensor temperature stays below 27°C (80°F) for an extended period of time.

Theory of Operation: The TCM uses a Temperature Sensor to monitor the transmission’s sump temperature. This temperature is used to determine which shift schedule the TCM is to use. If the

Temperature Sensor circuit fails to operate properly the TCM will use the calculated oil temperature routine found in prior model year TCM’s. If this occurs for three consecutive key starts, the code will be set. The TCM will then test the

Temperature Sensor circuit after every 35th

OBDII/EUROIII warm-up start. If the Temperature Sensor circuit is OK, the Temperature Sensor data is used in place of the Calculated Oil Temperature Routine.

Transmission Effects: If the Temperature Sensor indicates a temperature below -18°C (0°F) or above


116°C (240°F) at start up, the TCM compares the calculated oil temperature to the indicated oil temperature. If the calculated oil temperature differs significantly from the Temperature Sensor value, the calculated oil temperature will be used for that key start. This code does not cause the transmission to go into limp-in mode.


> Transmission temperature sensor signal circuit short to ground, short to voltage, or open circuit.

> Speed sensor ground circuit shorted to ground, shorted to voltage, or open circuit.

> Temperature Sensor

> TCM

Name of Code: P0218(75) - High Temperature

Operation Activated

When Monitored: Whenever the engine is running.

Set Condition: Immediately when the Overheat shift schedule is activated.

Theory of Operation: If the transmission oil temperature rises above 116°C (240°F), the overheat shift schedule is activated, refer to the Transmission Operation as a function of Transmission

Oil Temperature. The code is an information code only and is being set to aid the technician in determining root cause of a customer driveability issue. The code is also intended to alert the technician to determine if a cooling system malfunction has occurred or if an additional transmission air to oil cooler should be added to the vehicle if the customer regularly drives in a manner that overheats the transmission. Extended operation above

116°C (240°F) will reduce the durability of the transmission and should be avoided. Correcting the cooling system malfunction or installing an additional transmission oil cooler will improve transmission durability especially for customers who operate in city/construction stop and go traffic, tow trailers regularly, drive aggressively in low gear or drive regularly in mountainous areas.

Transmission Effects: Information only code. -

Overheat shift schedule was activated, no limp-in condition occurs. See description of overheat shift schedule.


> Transmission Overfilled with Oil

> Engine cooling fan failure

> Engine thermostat stuck closed

> Radiator corroded or packed with dirt

> Transmission cooler corroded or packed with dirt

> Transmission fan not functioning properly

> Transmission Oil Cooler Plugged

16

> Customer driving pattern requires additional transmission cooling

Name Of Code: P0884(76) - Power-Up at Speed

When Monitored: When TCM (Transmission

Control Module) initially powers-up.

Set Condition: If the TCM powers up and senses a valid forward gear PRNDL code and the output

RPM is above 800 RPM approx. 32 km/h (20 MPH) the code will be set.

Theory of Operation: If a vehicle loses power to the TCM, the solenoids will go to their respective power off state. Some solenoids are normally vented and some are normally applied in their power off state. The transmission is designed to be in 3rd gear with all of the solenoids in this state.

However, if power is restored, the TCM will power-up and normal operation will be restored.

This code identifies that power to the TCM was restored when the gear selector was in a

9Drive9 position while the vehicle was moving at speeds above 32 km/h (20 MPH). This code does not indicate a problem with the transmission or TCM, instead, it suggests intermittent problems in the fused ignition switch output, fused B(+), or ground circuits to the TCM. Alternately, if a person performs a rolling restart maneuver, the code can be set. Therefore it is critical that this DTC be investigated if the vehicle is experiencing intermittent

3rd gear operation and a subsequent return to normal operation.

Transmission Effects: No limp-in, although the symptom might be described as an intermittent limp-in. Code is for information only when trying to diagnosis intermittent 3rd gear operation and a subsequent return to normal operation.


> No Problem if vehicle is started in

9neutral9 at speeds above 32 km/h (20 MPH ) and shifted quickly to a forward gear position.

> Quick key off then on while driving is any forward gear.

FOR INTERMITTENT 3rd GEAR OPERA-

TION AND THEN A SUBSEQUENT RETURN

TO NORMAL OPERATION WITHOUT CY-

CLING THE IGNITION KEY

> Intermittent Direct Battery (Fused B(+)) connection between TCM (60-way pin 56) and battery.

> Intermittent Fused Ignition Switch Output between TCM (60-way pin 11) and ignition switch.

> Intermittent Ground to TCM (60 way pins 53 and 57).

Name of code: P0890(80) - Switched Battery

When monitored: Ignition key is turned from

9off9 position to

9run9 position and/or ignition key is turned from



Set condition: This code is set if the Transmission

Control Module (TCM) senses voltage on any of the pressure switch inputs prior to the TCM energizing the relay.

Theory of operation: The Transmission control relay is used to supply power to the solenoids and pressure switches when the transmission is in normal operating mode. When the relay is off, no power is supplied and the transmission is in

9limpin

9 mode. The relay output is fed back to the TCM through pins 16, 17 and 38. It is referred to as

9Transmission Control Relay Output9.

Immediately after a controller reset (ignition key turned to the

9run9 position or after cranking engine), the TCM verifies that the relay contacts are open by checking for no voltage at the transmission control relay output terminals. After this is verified, the voltage at the pressure switches is checked. There should be no voltage on the pressure switches at this time. The TCM will then activate the relay.

Transmission Effects: The MIL will illuminate and the transmission system will default to the

Immediate Shutdown routine.


> Short to battery on one or more pressure switch sense circuits.


> Solenoid/TRS connector problems.

> TCM.

Name of code:

P0841(81) - LR Pressure Switch Sense Circuit

P0846(82) - 2C Pressure Switch Sense Circuit

P0871(84) - OD Pressure Switch Sense Circuit

P0988(88) - 4C Pressure Switch Sense Circuit

P0876(90) - UD Pressure Switch Sense Circuit

When monitored: Whenever the engine is running.

Set condition: The appropriate code is set if one of the pressure switches are open or closed at the wrong time in a given gear (see chart below).

Theory of operation: The Transmission system uses five pressure switches to monitor the fluid pressure in the LR, 2C, 4C, UD, and OD clutch circuits. The pressure switches are continuously monitored for the correct states in each gear as shown below.

OP = switch is open (No Pressure)

CL = switch is closed (Pressure Indicated)

*LR pressure switch opens above 150 output

RPM in 1 st gear and closes below a 100 output

RPM.


Immediate shutdown routine.


> If code P0944(35) is present, perform code

P0944(35) diagnostic procedures

> Transmission fluid filter improperly installed

(Seal installed onto filter neck instead of into pump bore, seal not fully seated against pump bore housing, filter neck not engaged into pump, bolts loose or O-ring missing or damaged)

> Reverse carrier snap ring dislodged (typically sets on heavy throttle acceleration from a dead stop)

> Pressure switch sense circuit open or shorted to ground between TCM and Solenoid/TRS assembly

> Pressure switch sense circuit shorted to battery

> Pressure switch

> Loose valve body bolts

> Plugged filter - internal transmission or torque converter failure

> Check ball not seating.

> Solenoid malfunction (If set with corresponding Solenoid DTC. Ie: 2C Pressure switch set with 2C solenoid)

> Oil Pump (Code P0841(81) only)

> TCM

Name of code:

P0845(A2) - 2C Hydraulic Pressure test failure

P0870(A4) - OD Hydraulic Pressure test failure

P0987(A8) - 4C Hydraulic Pressure test failure

P0875(B0) - UD Hydraulic Pressure test failure

When monitored: In any forward gear with engine speed above 1000 RPM shortly after a shift and every minute thereafter.

Set condition: Immediately after a shift into a forward gear, with engine speed above 1000 RPM, the TCM momentarily turns on element pressure

17


to the clutch circuits that do not have pressure to identify that the appropriate pressure switch closes. If the pressure switch does not close it is tested again. If the switch does not close the second time, the appropriate code is set.


Module (TCM) tests the pressure switches when they are off. The test verifies that the switches are operational (They will close with pressure applied).

The TCM verifies that the switch closes when the corresponding element is applied. If a switch fails to close, it is re-tested. If it fails the second test, the code is set.

Transmission Effects: The MIL will illuminate and the transmission system will default to the orderly Shutdown routine Possible causes:

> Line Pressure Sensor

> Pressure switch sense circuit shorted to battery between TCM and solenoid/TRS assembly.

> Solenoid malfunction (If set with corresponding Solenoid DTC. Ie: 2C Hydraulic Pressure switch set with 2C solenoid)

> Low oil pressure

> Pressure switch

Name of code:

P0750(C1) - LR Solenoid Circuit

P0755(C2) - 2C Solenoid Circuit

P0760(C3) - OD Solenoid Circuit

P0770(C4) - 4C Solenoid Circuit

P0765(C5) - UD Solenoid Circuit

P2706(C6) - MS Solenoid Circuit

When monitored: Initially at power-up, then every 10 seconds thereafter. They will also be tested immediately after a gear ratio or pressure switch error is detected.

Set condition: Three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error.

Theory of operation: Six solenoids are used to control the friction elements (clutches). The continuity of the solenoid circuits are periodically tested. Each inactive solenoid is turned on for a few milliseconds, then off. Each active solenoid is turned off for a few milliseconds, then on. This pulsing of voltage to the solenoid causes an inductive spike which can be sensed by the TCM. If an inductive spike is not sensed by the Transmission

Control Module (TCM) during the continuity check, it is tested again. If the test fails three consecutive times, the appropriate code is set. If the solenoid test is run in response to a gear ratio or pressure switch error, one failure will result in setting the appropriate code.


Immediate Shutdown routine.

18


> Open or shorted solenoid circuit(s) between

TCM and solenoid/TRS assembly.

> Open ground circuit.


> Solenoid/TRS connector problem.

> Solenoid/TRS assembly.

> TCM

Name of code:

P0867(C8) - Line Pressure Fault

P0868(C9) - Line Pressure Low

P0869(CB) - Line Pressure High


Set condition: The TCM has an internal error counter for each DTC above. When any of the counters reaches a preset threshold, the appropriate code is set.

Theory of operation: Line pressured is controlled by the TCM. It is measured by the Line

Pressure Sensor (LPS) and regulation is achieved by changing the duty cycle of the Pressure Control

Solenoid (PCS). (5% duty cycle = solenoid off = max line pressure, 62% duty cycle = solenoid on = min line pressure). The TCM calculates the desired line pressure based on inputs from the transmission and engine. The TCM calculates torque input to the transmission and uses it as the primary input to the desired line pressure calculation. This is called Torque Based Line Pressure. In addition, the line pressure is set to a preset level 827 or 931 kPa

(120 or 135 PSI) during shifts and in Park and

Neutral to ensure consistent shift quality. The desired line pressure is continuously being compared to the actual line pressure. If the actual line pressure is consistently higher than the target, the line pressure high DTC P0869(CB) will be set. If the actual line pressure is consistently lower than the target, the line pressure low DTC P0868(C9) will be set. If it is consistently out of range, but not consistently high or low, it is considered out of range and the line pressure error DTC P0867(C8) will be set.

Transmission Effects: The Transmission system will default to open loop line pressure control resulting in a fixed PCS duty cycle. This duty cycle will change slightly depending on temperature and current gear. Possible causes:

> Sticking Regulator Valve

> Pressure Control Solenoid

> Line Pressure Sensor.

> Oil pump

> Plugged Filter

> 5V supply circuit to Line Pressure Sensor open (Sensor reading will read a constant value between 586 and 655 kPa (85 and 95

PSI)

> TCM

Name of code:

P0932(CA) - Line Pressure Sensor Fault


Set condition: If the Line Pressure Sensor (LPS) voltage is below 0.35 volts or above 4.75 volts the code will be set.

Theory of operation: Line pressured is controlled by the TCM. It is measured by the LPS and regulation is achieved by changing the duty cycle of the Pressure Control Solenoid (PCS) (5% duty cycle

= solenoid off = max line pressure, 62% duty cycle

= solenoid on = min line pressure). This sensor is continuously checked for out of range voltage by the TCM.

Transmission Effects: The Transmission system will default to open loop line pressure control resulting in a fixed PCS duty cycle. This duty cycle will change slightly depending on temperature and current gear.


> LPS signal circuit shorted to ground, shorted to voltage, or open.

> 5-volt supply circuit shorted to ground, shorted to voltage, or open.

> Open sensor ground

> Line Pressure Sensor

3.3.8

QUICK LEARN

The Quick Learn function customizes adaptive parameters of the TCM to the transmission characteristics of a vehicle. This gives the customer improved

9as received9 shift quality compared to the initial parameters stored in the TCM.

Notes about Quick Learn Features

The nature of the Quick Learn function requires that certain features must be taken into consideration.

> Quick Learn should generally not be used as a repair procedure unless directed by a repair or diagnostic procedure. If the transmission system is exhibiting a problem that you think is caused by an invalid CVI, you should try to relearn the value by performing the appropriate driving maneuver. In most cases, if a

Quick Learn makes a vehicle shift better, the vehicle will return with the same problem.

> Before performing Quick Learn, it is imperative that the vehicle be shifted into OD with the engine running and the oil level set to the correct level. This step will purge air from the


clutch circuits to prevent erroneous clutch volume values which could cause poor initial shift quality. Cycle the transmission through all gears 2-3 times immediately before performing Quick Learn. For best results, Quick

Learn should be run with the transmission sump temperature > 90°F.

> If an unused TCM is installed on a vehicle with a HOT engine, Quick Learn will cause the TCM to report a cold calculated oil temperature. This requires monitoring the calculated oil temperature using the DRBIII t. If the temperature is below 16°C (60°F), the transmission must be run at idle or driven in gear until it goes above 16°C (60°F). If the temperature is above 93°C (200°F), the transmission must cool to below 93°C (200°F).

> First gear is engaged in overdrive after Quick

Learn is completed. Place the vehicle in park after performing Quick Learn.

The Quick Learn function should be performed:

– Upon installation of a new service TCM

– After replacement or rebuild of internal transmission components or the torque converter

– If one or more of the clutch volumes indexes

(CVI’s) contain skewed readings because of abnormal conditions.

The Quick Learn procedure is performed with the DRBIII t by selecting 9Transmission9 system then

9Miscellaneous9 functions, then 9Quick

Learn

9. Follow the procedure instructions displayed on the DRBIII t.

To perform the Quick Learn procedure, the following conditions must be met.

NOTE: The oil temperature must be between

16°C (60°F) and 93°C (200°F). above 32°C

(90°F) for best results.

Cycle the transmission through all gears 2-3 times immediately before performing Quick Learn.

– It is imperative that the vehicle oil level set to the correct level. Shift the transmission into

OD with the engine running, this step will purge the air in the clutch circuits to prevent erroneous clutch volume values, which could cause poor initial shift quality.

– Shift the transmission to neutral.

– The brakes must be applied.

– The engine must be idling.

– The throttle angle (TP sensor) must be less than 3 degrees.

– The shift lever position must stay in neutral, after shifting to neutral the engine idle speed will ramp up to 1600rpm and the DRBIII t

19


will prompt the operator to shift to OD. Do not shift to OD until the engine idle speed stabilizes at 1600rpm.

– The shift lever must stay in OD after the

9Shift to Overdrive9 prompt until the DRBIIIt indicates the procedure is complete.

NOTE: The above conditions must be maintained during the procedure to keep the procedure from being aborted.

NOTE: After the Quick Learn Procedure is complete, the vehicle should be drive learned per the Drive Learn Procedure

3.3.9

CLUTCH VOLUMES

The LR clutch volume is updated when doing a

manual downshift into 1st gear with vehicle speed above 40 km/h (25 MPH) and throttle angle below

5°. The transmission temperature must be above

43°C (110°F).

The clutch volume should be between 45 and

134.

NOTE: You must manually move the shift lever into the low position.

The 2C clutch volume is updated when doing a

3-2 shift with throttle angle between 10° and 54°.

The transmission temperature must be above 43°C

(110°F). The clutch volume should be between 25 and 85.

The 2CA clutch volume is updated when doing a

4th-4 prime shift with throttle angle between 10° and 54°. The transmission temperature must be above 43°C (110°F). The clutch volume should be between 25 and 85.

The OD clutch volume is updated when doing a




The 4C clutch volume is updated when doing a




The UD clutch volume is updated when doing a




3.4

USING THE DRBIII

T

Refer to the DRBIII t user’s guide for instructions and assistance with reading trouble codes, erasing trouble codes, and other DRBIII t functions.

3.5

DRBIII

T ERROR MESSAGES

Under normal operation, the DRBIII t will display one of only two error messages:

– User-Requested WARM Boot

– User-Requested COLD Boot If the DRBIII t should display any other error message, record the entire display and call the S.T.A.R.

Center.

3.5.1

DRBIII

T DOES NOT POWER UP

(BLANK SCREEN)

If the LED’s do not light or no sound is emitted at start up, check for loose cable connections or a bad cable. Check the vehicle battery voltage. A minimum of 11 volts is required to adequately power the DRBIII t.

If all connections are proper between the DRBI-

II t and the vehicle or other devices, and the vehicle battery is fully charged, an inoperative DRBIII t may be the result of faulty cable or vehicle wiring.

For a blank screen, refer to the appropriate Body

Diagnostic manual.

3.5.2

DISPLAY IS NOT VISIBLE

Low temperatures will affect the visibility of the display. Adjust the contrast to compensate for this condition.

3.5.3

SOME DISPLAY ITEMS READ

(---(

This is caused by the scrolling the DRBIII t display a single line up or down. The line which

20

was scrolled onto the screen might read

9---9. Use the page down or page up function to display the information.

3.6

TRANSMISSION SIMULATOR (MILLER

TOOL # 8333)

NOTE: Remove the starter Relay when using the transmission simulator - Failure to remove the Starter Relay can cause a TCM -

No Response condition.

NOTE: The Transmission Simulator will not accurately diagnose an intermittent fault.

The transmission simulator, simply put, is an electronic device that simulates the electronic functions of any EATX controlled transmission (41TE,

42LE, and 45RFE/545RFE). It’s basic function is to aid the technician in determining if an internal transmission problem exists or if the problem resides in the vehicle wiring or Transmission Control

Module (TCM). It is only useful for electrical problems. It will not aid in the diagnosis of a failed mechanical component, but it can tell you that the

TCM and wiring are working properly and that the problem is internal.

The ignition switch should be in the lock position before attempting to install the simulator. Follow all instructions included with the simulator. If the feedback from the simulator is in doubt, you can verify it’s operation by installing it on a known good vehicle. A

9known good vehicle9 would be defined as a vehicle that does not set any DTC’s and drives and shifts as expected. One important point to remember is that the Simulator receives it’s power from the Trans Relay Output circuit. If the transmission system is in Limp-in (Relay open), the simulator will not operate. This is not really an indication of a problem, but an additional symptom. If the simulator does not power up (

9P9 led lit), this is an indication that the problem is still present with the simulator hooked up. This indicates that the problem is in the wiring or TCM and not the transmission.

4.0

DISCLAIMERS, SAFETY, AND

WARNINGS

4.1

DISCLAIMERS

All information, illustrations, and specifications contained in this manual are based on the latest information available at the time of publication.

The right is reserved to make changes at any time without notice.


4.2

SAFETY

4.2.1

TECHNICIAN SAFETY INFORMATION

WARNING: ENGINES PRODUCE CARBON

MONOXIDE THAT IS ODORLESS, CAUSES

SLOWER REACTION TIME, AND CAN LEAD

TO SERIOUS INJURY. WHEN THE ENGINE IS

OPERATING KEEP SERVICE AREAS WELL

VENTILATED OR ATTACH THE VEHICLE

EXHAUST SYSTEM TO THE SHOP EXHAUST

REMOVAL SYSTEM.

Set the parking brake and block the wheels before testing or repairing the vehicle. If is especially important to block the wheels on front-wheel drive vehicles: the parking brake does not hold the drive wheels.

Some operations in this manual require that hydraulic tubes, hoses, and fittings, disconnected for inspection or testing purposes. These systems, when fully charged, contain fluid at high preessure. Before disconnecting any hydraulic tubes, hoses, and fittings, be sure that the system is fully depressurized.

When servicing a vehicle, always wear eye protection, and remove any metal jewelry such as watchbands or bracelets that might make an inadvertent electrical contact. When diagnosing a

Transmission system problem, it is important to follow approved procedures where applicable.

These procedures can be found in the service information. Following these procedures is very important to the safety of individuals performing diagnostic tests.

4.2.2

VEHICLE PREPARATION FOR

TESTING

Make sure the vehicle being tested has a fully charged battery. If it does not, false diagnostic

DTC’s or error messages may occur. It is extremely important that accurate shift lever position data is available to the TCM. The accuracy of any DTC found in memory is doubtful unless the Shift Lever

Test, performed on the DRBIII t Scan Tool, passes without failure.

4.2.3

SERVICING SUB-ASSEMBLIES

Some components of the Transmission system are intended to be serviced in assembly only. Attempting to remove or repair certain system subcomponents may result in personal injury and/or improper system operation. Only those components with approved repair and installation procedures in the service information should be serviced.

21


4.2.4

DRBIII

T SAFETY INFORMATION

WARNING: EXCEEDING THE LIMITS OF THE

DRBIII

T

MULTIMETER IS DANGEROUS. IT

CAN EXPOSE YOU TO SERIOUS OR

POSSIBLY FATAL INJURY.

CAREFULLY

READ AND UNDERSTAND THE CAUTIONS

AND THE SPECIFICATION LIMITS.

•

•

•

Follow the vehicle manufacturer’s service specifications at all times.

Do not use the DRBIII t if it has been damaged.

Do not use the test leads if the insulation is damaged or if metal is exposed.

• To avoid electrical shock, do not touch the test leads, tips or the circuit being tested.

•

Choose the proper range and function for the measurement. Do not try voltage or current measurements that may exceed the rated capacity.

• Do not exceed the limits shown in the table.

FUNCTION

Volts

INPUT LIMIT

0-500 volts peak AC

0-500 volts DC

Ohms (resistance)*

Frequency measured

Frequency generated

Temperature

0-1.12 megohms

0-10 khz

-58-1100°F

-50-600°C

*Ohms cannot be measured if voltage is present. Ohms can be measured only in a nonpowered circuit.

• Voltage between any terminal and ground must not exceed 500v DC or 500v peak AC.

•

Use caution when measured voltage above 25v

DC or 25v AC.

• The circuit being tested must be protected by a

10A fuse or circuit breaker.

•

Use the low current shunt to measure circuits up to 10A. Use the high current clamp to measure circuits exceeding 10A.

• When testing for the presence of voltage or current, make sure the meter is functioning correctly. Take a reading of a known voltage or current before accepting a zero reading.

• When measuring current, connect the meter in series with the load.

•

Disconnect the live test lead before disconnecting the common test lead.

• When using the meter function, keep the DRBI-

II t away from spark plug or coil wires to avoid measuring error from outside interference.

4.3

WARNINGS

4.3.1

VEHICLE DAMAGE WARNINGS

Before disconnecting any control module, make sure the ignition is

9lock9 position. Failure to do so could damage the module. When testing voltage or continuity at any control module, use the terminal side (not the wire end) of the connector. Do not probe a wire through the insulation: this will damage the wire and eventually cause the wire to fail because of corrosion. Be careful when performing electrical tests so as to prevent accidental shorting of terminals. Such mistakes can damage fuses or components. Also, a second DTC could be set, making diagnosis of the original problem more difficult. When replacing a blown fuse, it is important to use only a fuse having the correct amperage rating. The use of a fuse with a rating other than indicated may result in a dangerous electrical system overload. If a properly rated fuse continues to blow, it indicates a problem in the circuit that must be corrected.

4.3.2

ROAD TESTING A COMPLAINT

VEHICLE

Some complaints will require a test drive as part of the repair verification procedure. The purpose of the test drive is to try to duplicate the diagnostic

DTC or symptom condition.

CAUTION: Before road testing a vehicle, be sure that all components are reassembled.

During the test drive, do not try to read

DRBIII

T

screen while in motion. Do not hang the DRBIII

T

from the rear view mirror or operate it yourself.

Have an assistant available to operate the DRBIII

T

.

Road testing is an essential step in the diagnostic process that must not be overlooked. Along with the diagnostic information obtained from the

DRBIII t Scan Tool and the original customer concern, the road test helps verify the problem was current and any repairs performed, fixed the vehicle correctly. Always operate and observe the vehicle under actual driving conditions.

Just as important as the road test is, there are preliminary inspections that should be performed prior to the road test. Always check the fluid level and condition before taking the vehicle on a road test. Determine if the incorrect fluid is being used,

22

improper fluid will result in erratic transmission operation. Some of the conditions of incorrect fluid level are as follows:

•

•

•

Delayed engagement

Poor shifting or erratic shifting

Excessive noise

• Overheating

The next step is to verify that the shift linkage is correctly adjusted. If the shift linkage is incorrectly adjusted, a number of complaints can result.

The TCM monitors the Shift Lever Position

(SLP) Sensor continuously. If the linkage is incorrectly adjusted, the TCM will sense a shift lever position that is not correct for the gear chosen by the driver. This may cause a DTC to be set. The following complaints may also be the result of an incorrectly adjusted or worn linkage:

•

•

•

•

•

Delayed clutch engagement

Erratic shifts

Vehicle will drive in neutral

Engine will not crank in park or neutral

Gear shift linkage will be able to be shifted without the key in the ignition

•

•

Not able to remove the ignition key in park

Parking pawl will not engage properly

The shift linkage should also be adjusted when replacing the Transmission, repairing the valve body, or when repairing any component between the shift lever and the Transmission.

Some questions to ask yourself when performing the road test are as follows:

• Is the complaint or concern what you think the problem is, based on the drivers description of the problem?

• Is the Transmission operating normally, or is there a real problem?

•

•

•

•

When does the problem occur?

Is the problem only in one gear range?

What temperature does the problem occur?

Does the vehicle have to sit over night for the problem to occur?

•

Does the transmission go into Limp-in mode?

4.3.3

ELECTRONIC PINION FACTOR

WARNINGS (IF APPLICABLE)

The pinion factor must be set when replacing the

TCM. Note: The pinion factor is a fixed number and cannot be changed or updated in some vehicle applications. If the pinion factor is not set or incorrectly set, any speed related functions will not operate correctly i.e. speedometer, speed control, rolling door locks, other control modules will be affected that depend on speed information.

23


4.4.4

BULLETINS AND RECALLS

Always perform all Safety Recalls and Technical

Service Bulletins that are applicable to the problem.

5.0

REQUIRED TOOLS AND

EQUIPMENT

> DRBIII t (diagnostic read-out box) - DRBIIIt must use the latest release level.

> Transmission Simulator (Miller # 8333)

> Line Pressure Adapter (Miller #8259)

> Jumper wires

> Test Light

> Ohmmeter

> Voltmeter

> Pressure gauge 0-2068 kPa (0-300 PSI)

6.0

GLOSSARY OF TERMS

6.1

ACRONYMS

IOD

IRT

ISS

LED

LPS

LR

MIL

CKT

FEMCC

Circuit

CVI

Clutch Volume Index

DLC

Data Link Connector

DRBIII

t

Diagnostic Readout Box

DTC

Diagnostic Trouble Code

EATX

Electronic Automatic Transmission

EMCC

Electronically Modulated Converter

Clutch

Full Electronically Modulated Converter Clutch

MS

OBD

OD

Ignition off-draw

Intelligent Recovery Timer

Input Speed Sensor

Light Emitting Diode

Line Pressure Sensor

Low/reverse Clutch

Malfunction Indicator Lamp

Multi Select

On Board Diagnostics

Overdrive Clutch

REV

SSV

SW

TCC

TCCM

TCM

TP

TRD


OSS

PCI

PCM

PCS

PEMCC

Output Speed Sensor

Programmable Controller Interface

(Vehicle bus system)

Powertrain Control Module

Pressure Control Solenoid

Partial Electronically Modulated

Converter Clutch

Reverse Clutch

Solenoid Switch Valve

Switch

Torque Converter Clutch

Transfer Case Control Module

Transmission Control Module

Throttle Position

Torque Reduction

TRS

TTS

UD

2C

4C

Transmission Range Sensor

Transmission Temperature Sensor

Underdrive Clutch

2nd Clutch

4th Clutch

6.2

DEFINITIONS

OBDII/EURO III Trip - A vehicle start and drive cycle such that all once per trip diagnostic monitors have run.

Key Start - A vehicle start and run cycle of at least

20 seconds.

Warm-up Cycle - A vehicle start and run cycle such that the engine coolant must rise to at least 71°C

(160°F) and must rise by at least 22°C (40°F) from initial startup. To count as a warm-up cycle, no

DTC’s may occur during the cycle.

24

7.0

DIAGNOSTIC INFORMATION AND

PROCEDURES

25

COMMUNICATION

Symptom:

*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - GAS

ONLY

POSSIBLE CAUSES

NO RESPONSE FROM TRANSMISSION CONTROL MODULE

FUSED IGNITION SWITCH OUTPUT (RUN/ST) CIRCUIT OPEN

FUSED IGNITION SWITCH OUTPUT (START) CIRCUIT OPEN

FUSED B(+) CIRCUIT OPEN

GROUND CIRCUIT(S) OPEN

OPEN PCI BUS CIRCUIT

TRANSMISSION CONTROL MODULE

TEST

1

2

ACTION

Ignition on, engine not running.

Note: As soon as one or more module communicates with the DRB, answer the question.

With the DRB, attempt to communicate with the Airbag Control Module (ACM).

With the DRB, attempt to communicate with the Body Control Module (BCM).

Was the DRB able to I/D or establish communications with either of the modules?

Yes

→ Go To 2

No

→ Refer to the Body Communication category and perform the symptom PCI Bus Communication Failure.

Perform 45RFE/545RFE TRANSMISSION VERIFICATION

TEST - VER 1.

APPLICABILITY

All

Turn the ignition off to the lock position.

Disconnect the TCM harness connector.


Using a 12-volt test light connected to ground, check the Fused Ignition Switch

Output (Run/St) circuit.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

→ Go To 3

No

→ Repair the Fused Ignition Switch Output (Run/St) circuit for an open. Refer to the wiring diagrams location in the Service Information.


TEST - VER 1.

All

26

COMMUNICATION


ONLY —

Continued

TEST ACTION APPLICABILITY

3 All Turn the ignition off to the lock position.


Remove the starter relay from the PDC.


Output (Start) circuit.


Observe the test light while momentarily turning the ignition switch to the Start position.


Yes

→ Go To 4

No

→ Repair the Fused Ignition Switch Output (Start) circuit for an open. Refer to the wiring diagrams located in the Service Information.


TEST - VER 1.

Note: Reinstall the original Starter Relay.

4 All

5

Turn the ignition off.


Using a 12-volt test light connected to ground, check the Fused B(+) circuit.



Yes

→ Go To 5

No

→ Repair the Fused B(+) circuit for an open. Refer to the wiring diagrams located in the Service Information.


TEST - VER 1.



Using a 12-volt test light connected to 12-volts, check each ground circuit in the TCM harness connector.


Does the test light illuminate brightly at all the ground circuits?

Yes

→ Go To 6

No

→ Repair the Ground circuit(s) for an open. Check the main ground connection to engine block and/or chassis. Refer to the wiring diagrams located in the Service Information.


TEST - VER 1.

All

27

COMMUNICATION


ONLY —

Continued

TEST ACTION APPLICABILITY

6 All

Note: Ensure there is PCI Bus communication with other modules on the vehicle before proceeding. If not, refer to the symptom list from the menu and repair as necessary.


Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and black test probes.

Connect the scope input cable to the channel one connector on the DRB. Attach the red and black leads and the cable to probe adapter to the scope input cable.

With the DRBIII t select Pep Module Tools.

Select lab scope.

Select Live Data.

Select 12 volt square wave.

Press F2 for Scope.

Press F2 and use the down arrow to set voltage range to 20 volts. Set Probe to x10.

Press F2 again when complete.

Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus circuit in the TCM connector.

Turn the ignition on.

Observe the voltage display on the DRB Lab Scope.

Does the voltage pulse from 0 to approximately 7.5 volts?

Yes

→ Go To 7

No

→ Repair the PCI Bus circuit for an open.


TEST - VER 1.

7 All If there are no possible causes remaining, view repair.

Repair

Replace the Transmission Control Module. WITH THE DRBIII t

PERFORM QUICK LEARN.


TEST - VER 1.

28

TRANSMISSION

Symptom:

P0120-THROTTLE POSITION SENSOR SIGNAL CIRCUIT

When Monitored and Set Condition:

P0120-THROTTLE POSITION SENSOR SIGNAL CIRCUIT

When Monitored: Whenever the engine is running.

Set Condition: The DTC is set if the throttle angle goes out of range or if throttle angle changes abruptly (i.e.: faster than the throttle body motion should occur). Note: This DTC can also be set by repeatedly stabbing the throttle.

POSSIBLE CAUSES

RELATED TPS PCM DTC’S PRESENT

INTERMITTENT WIRING AND CONNECTORS

TPS VOLTAGE CHANGE NOT SMOOTH

SENSOR GROUND CIRCUIT OPEN TO TCM

TPS SIGNAL CIRCUIT OPEN TO TCM

TCM - THROTTLE POSITION CIRCUIT

TEST

1

ACTION

NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level per the service information.

NOTE: Always perform diagnostics with a fully charged battery to avoid false symptoms.

With the DRBIII t, read the engine DTC’s. Check and repair all engine DTC’s prior to performing transmission symptom diagnostics.

With the DRBIII t, read Transmission DTC’s. Record all DTC’s and 1 Trip Failures.

NOTE: Diagnose 1 Trip Failures as a fully matured DTC.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

Repair as necessary.

Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test for P0706 Check Shifter Signal.

For Gear Ratio DTC’s, check and record all CVI’s.

Most DTC’s set on start up but some must be set by driving the vehicle such that all diagnostic monitors have run.

Note: Verify flash level of transmission controller. Some problems are corrected by software upgrades to the transmission controller.

NOTE: Check for applicable TSB’s related to the problem.

Perform this procedure prior to Symptom diagnosis.

Continue

Go To 2

APPLICABILITY

All

29

TRANSMISSION

P0120-THROTTLE POSITION SENSOR SIGNAL CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION

With the DRBIII t, check Powertrain Control Module DTC’s.

Are any of the DTCs P0122, P0123 or P0121 present?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to the Powertrain category and perform the appropriate symptom.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, check the TPS degree.

Is the TPS degree reading below 6° or over 120°?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Go To 4

No

→ Go To 7


Disconnect the TPS harness connector.


Note: Check connectors - Clean/repair as necessary.

Measure the resistance of the Sensor Ground circuit between the TPS harness connector and the Transmission Control Module harness connector.

Is the resistance below 5.0 ohms?

Yes

→ Go To 5

No

→ Repair the open Sensor Ground circuit between the TCM harness connector and the splice.


TEST - VER 1.


Disconnect the Throttle Position Sensor (TPS).



Measure the resistance of the TPS Signal Circuit from the TCM harness connector to the TPS harness connector.


Yes

→ Go To 6

No

→ Repair the open TPS signal circuit between the TCM harness connector and the splice.


TEST - VER 1.

If there are no possible causes remaining, view repair.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

30

TRANSMISSION

P0120-THROTTLE POSITION SENSOR SIGNAL CIRCUIT —

Continued

TEST

7

8

ACTION

The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

Wiggle the wires while checking for shorts and open circuits.

Pay particular attention to the the point where the TPS signal and sensor ground circuits splice off from the engine circuits.

Were there any problems found?

Yes

→ Repair wiring and/or connector as necessary.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Ignition On, Engine Not Running.

With the DRBIII t, read the TPS voltage.

While monitoring the DRBIII t, slowly open and close the throttle.

Is the TPS voltage change smooth?

Yes

→ Test Complete.

No

→ Replace the Throttle Position Sensor.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

31

TRANSMISSION

Symptom:

P0218-HIGH TEMPERATURE OPERATION ACTIVATED


P0218-HIGH TEMPERATURE OPERATION ACTIVATED


Set Condition: Immediately when the Overheat shift schedule is activated 116 degrees C transmission oil temp. (240 degrees F. Trans oil temp).

POSSIBLE CAUSES

ENGINE COOLING SYSTEM

TRANSMISSION OIL PUMP FLOW

HIGH TEMPERATURE OPERATIONS ACTIVATED

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2

Perform the Oil Pump Flow test per the Service Information.

Did the Oil Pump Flow test pass?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Go To 3

No

→ Repair the cause of either a low, or no Transmission Oil Pump

Flow. Refer to the Service Information for the proper repair procedure.


TEST - VER 1.

32

TRANSMISSION

P0218-HIGH TEMPERATURE OPERATION ACTIVATED —

Continued

TEST

3

4

ACTION

Perform Engine Cooling System diagnostics per the Service Information.

Is the Engine Cooling System functioning properly?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Go To 4

No

→ Repair the cause of the engine overheating. Refer to the Service

Information for the proper repair procedure.


TEST - VER 1.

This DTC is an informational DTC designed to aid the Technician in diagnosing shift quality complaints.

This DTC indicates that the transmission has been operating in the

9Overheat9 shift schedule which may generate a customer complaint.

The customer driving patterns may indicate the need for an additional transmission oil cooler.


Repair

Repair the cause of transmission overheating. Refer to the Service

Information for the proper repair procedure. Make sure to check for any TSBs pertaining to this problem.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

33

TRANSMISSION

Symptom:

P0604-INTERNAL TCM



When Monitored: Continuously with the key on.

Set Condition: When ever the TCM detects an internal controller problem.

POSSIBLE CAUSES

TCM INTERNAL ERROR

TEST

1

ACTION


Repair

The Transmission Control Module is reporting internal errors and must be replaced. WITH THE DRBIII t PERFORM QUICK

LEARN.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

34

TRANSMISSION

Symptom:




When Monitored: Continuously with the key on


POSSIBLE CAUSES

TCM INTERNAL ERROR

TEST

1

ACTION


Repair


LEARN.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

35

TRANSMISSION

Symptom:




When Monitored: Continuously with the key on.


POSSIBLE CAUSES

GROUND CIRCUIT OPEN

TCM INTERNAL ERROR

TEST

1

2

ACTION




Using a 12-volt test light connected to 12-volts, check all three ground circuits in the

TCM harness connector.


Does the test light illuminate brightly on all three ground circuits?

Yes

→ Go To 2

No

→ Repair the Ground circuit(s) as necessary. Check main ground connection to engine block and/or chassis.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


View repair.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


LEARN.


TEST - VER 1.

36

TRANSMISSION

Symptom:

P0706-CHECK SHIFTER SIGNAL


P0706-CHECK SHIFTER SIGNAL

When Monitored: Continuously with the ignition key on.

Set Condition: 3 occurrences in one key start of an invalid PRNDL code which lasts for more than 0.1 second.

POSSIBLE CAUSES

INTERMITTENT WIRING & CONNECTORS

SHIFT LINKAGE OUT OF ADJUSTMENT.

TRS T1 SENSE CIRCUIT OPEN





TRS T1 SENSE CIRCUIT SHORT TO GROUND





TRS T1 SENSE CIRCUIT SHORT TO VOLTAGE





TRANSMISSION RANGE SENSOR

TCM - TRS T1 SENSE CIRCUIT





37

TRANSMISSION

P0706-CHECK SHIFTER SIGNAL —

Continued

TEST

1

2

3

ACTION














APPLICABILITY

All

Continue

Go To 2

With the DRBIII t, perform the Shift Lever Position Test.

Select the test outcome from the following:

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Test passes:

Go To 3

Test fails with DTC:

Go To 4

Test fails without DTC:

Go To 27




Yes

→ Repair as necessary.


TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

38

TRANSMISSION


Continued

TEST

4

5

ACTION


Remove the Starter Relay from the PDC.

NOTE: Failure to remove the Starter Relay can cause a TCM - No Response condition.

Install Transmission Simulator Miller tool #8333.


With the DRBIII t, perform the Shift Lever Position Test.

When the DRBIII t instructs you to put the Gear Selector in a particular position, you must do so using the selector switch on the Transmission Simulator.

The LED for the gear position in question must be illuminated on the Transmission

Simulator prior to pressing

9ENTER9 on the DRBIIIt.

NOTE: When the DRBIII

t requests the O/D off button be depressed, you

must use the O/D OFF button in the vehicle or you will fail the Shift Lever

Position Test with a DTC P0613 (11).

Did the Shift Lever Position test pass?

Yes

→ Go To 5

No

→ Go To 6

NOTE: Make sure to disconnect the Transmission Simulator and reconnect all disconnected connectors before proceeding.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

6

Repair

Replace the Transmission Solenoid/TRS Assembly per the Service

Information.


TEST - VER 1.

With the DRBIII t, observe the TRS sense circuits on the Input/Output screen. (C1 thru C5)

Move the shift lever from P to L, pausing momentarily in each gear position. Watch for one of the circuits to not change state.

Pick the one that did not change state.

TRS T1 sense (C4)

Go To 7

TRS T2 sense (C5)

Go To 11

TRS T3 sense (C3)

Go To 15

TRS T41 sense (C1)

Go To 19

TRS T42 sense (C2)

Go To 23

5-SPD AUTO-

MATIC 5-45RFE

TRANS

39

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION


Disconnect the Transmission Solenoid/TRS Assembly harness connector.



Measure the resistance of the TRS T1 Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.

Is the resistance above 5.0 ohms?

Yes

→ Repair the TRS T1 circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the TRS T1 Sense circuit in the TCM harness connector..


Yes

→ Repair the TRS T1 Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9






Measure the voltage of the TRS T1 Sense circuit in the TCM harness connector.

Is the voltage above 0.5 volt?

Yes

→ Repair the TRS T1 Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

40

TRANSMISSION


Continued

TEST

11

12

13

14

ACTION







Yes

→ Repair the TRS T2 Sense circuit for an open.


TEST - VER 1.

No

→ Go To 12

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the TRS T2 Sense circuit in the TCM harness connector.


Yes



TEST - VER 1.

No

→ Go To 13








Yes



TEST - VER 1.

No

→ Go To 14


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

41

TRANSMISSION


Continued

TEST

15

16

17

18

ACTION







Yes

→ Repair the open TRS T3 Sense circuit.


TEST - VER 1.

No

→ Go To 16

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes



TEST - VER 1.

No

→ Go To 17






Measure the voltage of the TRS T3 Sense circuit at the TCM harness connector.


Yes



TEST - VER 1.

No

→ Go To 18


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

42

TRANSMISSION


Continued

TEST

19

20

21

22

ACTION







Yes

→ Repair open TRS T41 Sense circuit.


TEST - VER 1.

No

→ Go To 20

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes



TEST - VER 1.

No

→ Go To 21








Yes



TEST - VER 1.

No

→ Go To 22


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

43

TRANSMISSION


Continued

TEST

23

24

25

26

27

ACTION







Yes

→ Repair the TRS T42 Sense circuit for an open.


TEST - VER 1.

No

→ Go To 24

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes



TEST - VER 1.

No

→ Go To 25






Measure the voltage of the TRS T42 Sense circuit at the TCM harness connector.


Yes



TEST - VER 1.

No

→ Go To 26


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Adjust the shift linkage per the Service Information.


TEST - VER 1.

44

TRANSMISSION

Symptom:

P0715-INPUT SPEED SENSOR ERROR


P0715-INPUT SPEED SENSOR ERROR

When Monitored: The transmission gear ratio is monitored continuously while the transmission is in gear.

Set Condition: If there is an excessive change in input RPM in any gear. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES


INPUT SPEED SENSOR SIGNAL CIRCUIT OPEN

SPEED SENSOR GROUND CIRCUIT OPEN

INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND

SPEED SENSOR GROUND CIRCUIT SHORT TO GROUND

INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE

INPUT SPEED SENSOR

TCM - INPUT SPEED SENSOR

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

45

TRANSMISSION

P0715-INPUT SPEED SENSOR ERROR —

Continued

TEST

2

3

4

5

6

ACTION

Start the engine in park.

With the DRBIII t, observe the Input Speed Sensor Reading.

Is the Input Speed Sensor Reading below 400 RPM?

Yes

→ Go To 3

No

→ Go To 12







Using the Transmission Simulator, set the rotary knob to the middle (3000/1000) position. Turn the

9Input/Output9 switch to 9ON9.

With the DRBIII t, observe the Input and Output Speed Sensor readings.

Does the input speed read 3000 RPM and the Output speed read 1000 RPM (within

50 RPM)?

Yes

→ Go To 4

No

→ Go To 5


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Input Speed Sensor.


TEST - VER 1.

Turn ignition switch to the lock position


Disconnect the Input Speed Sensor harness connector.


Measure the resistance of the Input Speed Sensor Signal circuit from the TCM connector to the Input Speed Sensor connector.


Yes

→ Repair the Input Speed Sensor Signal circuit for an open.


TEST - VER 1.

No

→ Go To 6





Measure the resistance of the Speed Sensor Ground circuit from the TCM harness connector to the Input Speed Sensor harness connector.


Yes

→ Repair the Speed Sensor Ground circuit for an open.


TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

46

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION





Measure the resistance between ground and the Input Speed Sensor Signal circuit.

Is the resistance Below 5.0 ohms?

Yes

→ Repair the Input Speed Sensor Signal circuit for a short to ground.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the Speed Sensor Ground circuit.


Yes

→ Repair the Speed Sensor Ground circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9



Remove the Transmission Control Relay from the PDC.


Place a jumper wire between the Fused B+ circuit and the Transmission Control

Relay Output circuit in the Transmission Control Relay connector.


Measure the voltage of the Input Speed Sensor Signal circuit in the TCM harness connector.

Is the voltage above 0.5 volts?

Yes

→ Repair the Input Speed Sensor Signal circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10





Place a jumper wire between the fused B+ circuit and the Transmission Control



Measure the voltage of the Speed Sensor Ground circuit in the TCM harness connector.


Yes

→ Repair the Speed Sensor Ground circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 11

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

47

TRANSMISSION


Continued

TEST

11

12

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.



Were any problems found?

Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

48

TRANSMISSION

Symptom:

P0720-OUTPUT SPEED SENSOR ERROR


P0720-OUTPUT SPEED SENSOR ERROR


Set Condition: If there is an excessive change in output RPM in any gear. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES


OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN


OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND


OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE


OUTPUT SPEED SENSOR

TCM - OUTPUT SPEED SENSOR

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

49

TRANSMISSION

P0720-OUTPUT SPEED SENSOR ERROR —

Continued

TEST

2

3

4

5

ACTION


CAUTION: Properly support the vehicle and raise all drive wheels off the ground.


Place the transmission gear selector in drive, release foot from brake.

WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING

WHEELS.

With the DRBIII t, monitor the Output Speed Sensor RPM.

Is the Output Speed Sensor RPM below 100 RPM?

Yes

→ Go To 3

No

→ Go To 12

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Remove the Starter Relay.


Install the Transmission Simulator, Miller tool #8333.



With the Transmission Simulator, set the

9Input/Output Speed9 switch to 9ON9 and the rotary switch to the

93000/10009 position.

With the DRBIII t, read the Input and Output Speed Sensor readings.

Does the Input Speed read 3000 RPM and the Output Speed read 1000 RPM, ± 50

RPM?

Yes

→ Go To 4

No

→ Go To 5


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Output Speed Sensor.


TEST - VER 1.



Disconnect the Output Speed Sensor harness connector.


Measure the resistance of the Output Speed Sensor Signal circuit from the TCM harness connector to the Output Speed Sensor harness connector.


Yes

→ Repair the Output Speed Sensor Signal circuit for an open.


TEST - VER 1.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

50

TRANSMISSION


Continued

TEST

6

7

8

9

ACTION





Measure the resistance of the Speed Sensor Ground circuit from the TCM connector to the Output Speed Sensor connector.


Yes



TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the Output Speed Sensor Signal circuit.


Yes

→ Repair the Output Speed Sensor Signal circuit for a short to ground.


TEST - VER 1.

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the Speed Sensor Ground circuit.


Yes

→ Repair the Speed Sensor Ground circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9





Place a jumper wire between the Fused B+ circuit and the Transmission Relay

Output circuit in the Transmission Control Relay connector.

Turn ignition on.

Measure the voltage of the Output Speed Sensor Signal circuit in the TCM harness connector.


Yes

→ Repair the Output Speed Sensor Signal circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

51

TRANSMISSION


Continued

TEST

10

11

12

ACTION





Place a jumper wire between the Fused B+ circuit and Transmission Control Relay



Measure the voltage of the Speed Sensor Ground circuit in the TCM harness connector.


Yes



TEST - VER 1.

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Transmission Control Module per the Service Information. WITH THE DRBIII t PERFORM QUICK LEARN.


TEST - VER 1.




Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

52

TRANSMISSION

Symptom:

P0725-ENGINE SPEED SENSOR CIRCUIT


P0725-ENGINE SPEED SENSOR CIRCUIT

When Monitored: Continuously with engine running.

Set Condition: This code is set when the engine speed sensed by the Transmission

Control Module (TCM) is less than 400 RPM and the engine is running (As reported by the

PCM over the communication bus) for 2 seconds. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES

RELATED PCM DTC’S PRESENT


CKP SIGNAL CIRCUIT OPEN TO TCM

SENSOR GROUND CIRCUIT OPEN TO TCM

TCM- ENGINE SPEED SENSOR CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

53

TRANSMISSION

P0725-ENGINE SPEED SENSOR CIRCUIT —

Continued

TEST

2

3

4

5

ACTION


With the DRBIII t, check Powertrain Control Module DTC’s.

Are the DTCs P0320, P1391, and/or P1398 present?

Yes

→ Refer to the Powertrain category and perform the appropriate symptom.


TEST - VER 1.

No

→ Go To 3

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Start the engine.

Allow the engine to idle.

With the DRBIII t, under 9Engine9, in Sensors, read and record 9Engine RPM9.

With the DRBIII t, under 9Transmission9, in 9Sensors9, read and record 9Engine

RPM

9.

Compare the two readings.

Are the two readings within 50 RPM of each other?

No

→ Go To 4

Yes

→ Go To 7


Disconnect the CKP harness connector.



Measure the resistance of the CKP Sensor Signal circuit between the CKP harness connector and the TCM harness connector.


Yes

→ Go To 5

No

→ Repair the CKP Signal circuit for an open. Pay special attention to the location of CKP Signal circuit spice to the Transmission

Control Module.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Disconnect the CKP Sensor harness connector.



Measure the resistance of the Sensor Ground circuit between the CKP Sensor and the



Yes

→ Go To 6

No

→ Repair the Sensor Ground circuit for an open. Pay special attention to the location of Sensor Ground splice to the TCM.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

54

TRANSMISSION

P0725-ENGINE SPEED SENSOR CIRCUIT —

Continued

TEST

6

7

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.



Pay particular attention to the point where the CKP Signal circuit and the Sensor

Ground circuit splice off from the engine circuits.


Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

55

TRANSMISSION

Symptom:

P0731-GEAR RATIO ERROR IN 1ST


P0731-GEAR RATIO ERROR IN 1ST


Set Condition: If the ratio of the Input RPM to the Output RPM does not match the current gear ratio. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES

RELATED DTC’S PRESENT

INTERMITTENT GEAR RATIO ERRORS

INTERNAL TRANSMISSION

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

56

TRANSMISSION

P0731-GEAR RATIO ERROR IN 1ST —

Continued

TEST

2

3

4

5

ACTION

With the DRBIII t, check for other transmission DTC’s

If any of these DTC’s are present, perform their respective tests first.

Are DTC’s P0944, P0715, P0720, P1794, P0867, P0932, P0868, or P0869 present also?

Yes

→ Refer to Symptom list for the related symptom(s). If any of these

DTCs are present, they will cause a Speed Ratio Error. Perform the test for P0944 first if it is present.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, perform the 1st Gear Clutch Test. Follow the instructions on the

DRBIII t.

Increase the throttle angle or TPS Degree to 30°, for no more than a few seconds.

CAUTION: Do not overheat the transmission.

Did the Clutch Test pass, Input Speed remain at zero?

Yes

→ Go To 4

No

→ Go To 5

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

The conditions to set this DTC are not currently present.

Check the gearshift linkage adjustment.

Intermittent Gear Ratio DTCs can be set by problems in the Input and Output Speed

Sensor circuits and/or Speed Sensor Ground circuit.

Check the speed sensor wiring and connectors for good connection, then perform a wiggle test using the Transmission Simulator, Miller tool # 8333.

Remove the Starter Relay from the PDC before using the Transmission Simulator

Miller tool # 8333.


Gear ratio DTC’s can also be set under extreme temperature conditions, this is usually caused by an internal problem.

Verify if the problem is only experienced under extreme hot or cold conditions.

Were there any problems found.

Yes



TEST - VER 1.

No

→ Test Complete.

Repair or replace the transmission as necessary.

If the transmission is to be repaired, and there were any line pressure DTC’s present along with this DTC, make sure to inspect the Transmission Oil Pump and Pressure

Control Solenoid per the Service Information procedures.

If DTC’s P0876 and/or P0875 were present in addition to the P0731, replace the

Transmission Solenoid/TRS Assembly in addition to necessary internal repairs.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission problem or replace the transmission per the Service Information.


TEST - VER 1.

57

TRANSMISSION

Symptom:

P0732-GEAR RATIO ERROR IN 2ND


P0732-GEAR RATIO ERROR IN 2ND



POSSIBLE CAUSES


RELATED PRESSURE SWITCH DTC’S PRESENT



TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

58

TRANSMISSION

P0732-GEAR RATIO ERROR IN 2ND —

Continued

TEST

2

3

4

5

ACTION



Are DTC’s P0944, P0715, P0720, P1794, P0867, P0932, P0868 or P0869 present also?

Yes

→ Refer to the Transmission category and perform the appropriate symptom. If any of these DTCs are present, they will cause a

Speed Ratio Error. Perform the test for P0944 first if it is present.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, perform the 2nd Gear Clutch Test. Follow the instructions on the

DRBIII t.

Increase the throttle angle, TPS Degree to 30° for no more than a few seconds.


Did the clutch test pass, Input speed remain at zero?

Yes

→ Go To 4

No

→ Go To 5

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Intermittent gear ratio DTCs can be set by problems in the Input and Output Speed


Remove the starter relay before installing the Transmission Simulator.






Yes

→ Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.


TEST - VER 1.

No

→ Test Complete.


Is a DTC P0845 2C Hydraulic Pressure Switch and/or P0846 2C Pressure Switch present also?

Yes

→ Repair or replace the Transmission or Solenoid/TRS assembly per the Service Information.


TEST - VER 1.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

59

TRANSMISSION

P0732-GEAR RATIO ERROR IN 2ND —

Continued

TEST

6

ACTION



Control Solenoid per the Service Information.

If DTC’s P0846 and/or P0845 are also present, replace the Transmission Solenoid/

TRS Assembly in addition to internal repairs.


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair



TEST - VER 1.

60

TRANSMISSION

Symptom:

P0733-GEAR RATIO ERROR IN 3RD


P0733-GEAR RATIO ERROR IN 3RD



POSSIBLE CAUSES





TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

61

TRANSMISSION

P0733-GEAR RATIO ERROR IN 3RD —

Continued

TEST

2

3

4

5

ACTION



Are the DTC’s P0944, P0715, P0720, P1794, P0867, P0932, P0868, or P0869 present also?

Yes

→ Refer to the Transmission category and perform the appropriate symptom.. If any of these DTCs are present, they will cause a



TEST - VER 1.

No

→ Go To 3


Are the DTCs P0870 OD Hydraulic Pressure Switch and/or P0871 OD Pressure

Switch present also?

Yes

→ Replace the Transmission Solenoid/TRS Assembly per the Service

Information.


TEST - VER 1.

No

→ Go To 4

With the DRBIII t, perform the 3rd Gear Clutch Test. Follow the instructions on the

DRBIII t.

Increase the throttle angle, TPS Degree, to 30° for no more than a few seconds.


Did the clutch test pass, Input speed remains at zero?

Yes

→ Go To 5

No

→ Go To 6

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Check the speed sensor wiring and connectors for good connection, then perform a wiggle test using the Transmission Simulator (Miller tool # 8333).



Were there any problems found.

Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

62

TRANSMISSION

P0733-GEAR RATIO ERROR IN 3RD —

Continued

TEST

6

ACTION




NOTE: If DTC’s P0871 and/or P0870 are also present, replace the Transmission

Solenoid/TRS Assembly in addition to necessary internal repairs.


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair



TEST - VER 1.

63

TRANSMISSION

Symptom:

P0734-GEAR RATIO ERROR IN 4TH


P0734-GEAR RATIO ERROR IN 4TH



POSSIBLE CAUSES




TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

64

TRANSMISSION

P0734-GEAR RATIO ERROR IN 4TH —

Continued

TEST

2

3

4

ACTION



Are the DTC’s P0944, P0715, P0720, P1794, P0867, P0932, P0868 or P0869 present also?

Yes




TEST - VER 1.

No

→ Go To 3


Are the DTCs P0987 4C Hydraulic Pressure Switch and/or P0988 4C Pressure Switch present also?

Yes

→ Replace the Transmission or Solenoid/TRS assembly per current warranty policy.


TEST - VER 1.

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair or replace the transmission as necessary per the Service Information.



If DTC’s P0988 and/or P0987 are also present, replace the Transmission Solenoid/

TRS Assembly in addition to necessary internal repairs.


Repair

Replace the Transmission or repair internal transmission problem per the Service Information.


TEST - VER 1.

65

TRANSMISSION

Symptom:

P0735-GEAR RATIO ERROR 4TH PRIME


P0735-GEAR RATIO ERROR 4TH PRIME



POSSIBLE CAUSES




TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

66

TRANSMISSION

P0735-GEAR RATIO ERROR 4TH PRIME —

Continued

TEST

2

3

4

5

ACTION




Yes




TEST - VER 1.

No

→ Go To 3

With the DRBIII t, perform the 2nd Gear Clutch Test. Follow the instructions on the

DRBIII t for test.

With the DRBIII t, perform the 3rd Gear Clutch Test. Follow the instructions on the

DRBIII t for the test.

NOTE: You must test the 2nd and 3rd clutches to verify 4th Prime operation.

Increase the throttle angle, TPS Degree, to 30° for no more than a few seconds for each Gear tested.


NOTE: No DTC’s will be set while using the DRBIII

t to perform a clutch test.

Did both clutch test pass, Input speed remain at zero?

Yes

→ Go To 4

No

→ Go To 5

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS











Yes



TEST - VER 1.

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission problem. If any Line Pressure DTC’s are present along with this DTC, make sure to inspect the

Transmission Oil Pump and the Pressure Control Solenoid per the

Service Information.


TEST - VER 1.

67

TRANSMISSION

Symptom:

P0736-GEAR RATIO ERROR IN REVERSE


P0736-GEAR RATIO ERROR IN REVERSE



POSSIBLE CAUSES




TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

68

TRANSMISSION

P0736-GEAR RATIO ERROR IN REVERSE —

Continued

TEST

2

3

4

5

ACTION




Yes




TEST - VER 1.

No

→ Go To 3

With the DRBIII t, perform the Reverse Gear Clutch Test. Follow the instructions on the DRBIII t.

Increase the throttle angle , TPS Degree, to 30°, for no more than a few seconds.


Did the clutch test pass, Input speed remain at zero?

Yes

→ Go To 4

No

→ Go To 5

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Check the speed sensor wiring and connectors for good connection, then perform a wiggle test using the Transmission Simulator (Miller tool # 8333).


Verify if the problem is only experienced under extreme hot or cold conditions


Yes



TEST - VER 1.

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission problem. If there are any Line

Pressure DTC’s present along with this DTC, make sure to inspect the Transmission Oil Pump and Pressure Control Solenoid per the



TEST - VER 1.

69

TRANSMISSION

Symptom:

P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT


P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT

When Monitored: During Electronically Modulated Converter Clutch (EMCC) Operation.

Set Condition: Transmission must be in EMCC, with input speed > than 1750 RPM.

TCC-L/R Solenoid achieves the maximum duty cycle and can not pull engine speed within

60 RPM of input speed. Also when the transmission is in FEMCC and the engine slips TCC

> than 100 RPM for 10 seconds. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES

RELATED DTC P0750 PRESENT

INTERMITTENT WIRING AND/OR CONNECTORS

INTERNAL TRANSMISSION PROBLEM - TCC OUT OF RANGE

L/R SOLENOID INOPERATIVE

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

70

TRANSMISSION

P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION

With the DRBIII t, read transmission DTC’s

Is the DTC P0750 present?

Yes

→ Replace the Transmission Solenoid/TRS assembly per the Service

Information.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 6


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to the Transmission category and perform the appropriate symptom.


No

→ Go To 3

With the DRBIII t, Read and RECORD ALL Transmission DTC’s. After recording

DTC’s, erase DTC’s.

Drive the vehicle until the transmission temperature is at least 43°C or 110°F.

Perform the following steps 3 times.

Drive the vehicle at 80 km/h or 50 MPH.

Allow 4th gear to engage for at least 10 seconds.

Close the Throttle.

Tip back into the throttle until the TPS angle is between 25 and 29 degrees.

NOTE: If the throttle angle goes over 30 degrees, you must close the throttle and try again.

Did the TCC engage (Engine speed approximately equal to input speed) during any of the attempts?

Yes

→ Go To 4

No

→ Go To 5



Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.



Yes



No

→ Test Complete.

With the DRBIII t, check for other transmission DTC’s.

Are codes P1775 and P0841 present also?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Internal transmission problem, inspect the oil pump per service manual information and replace if necessary. If no problems are found in the Oil Pump, replace the Solenoid/TRS assembly also replace the Torque Converter in either case.


71

TRANSMISSION

Symptom:

P0750-LR SOLENOID CIRCUIT


P0750-LR SOLENOID CIRCUIT

When Monitored: Initially at power-up, then every 10 seconds thereafter. The solenoids will also be tested immediately after a gear ratio or pressure switch error is detected.

Set Condition: Three consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error.

POSSIBLE CAUSES

RELATED RELAY DTC’S PRESENT


TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN

L/R SOLENOID CONTROL CIRCUIT OPEN

L/R SOLENOID CONTROL CIRCUIT SHORT TO GROUND

L/R SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE

SOLENOID/TRS ASSEMBLY- L/R SOLENOID

TCM - L/R SOLENOID CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

72

TRANSMISSION

P0750-LR SOLENOID CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTC’s P0890, P0891, or P0888 present?

Yes

→ Refer to symptom list and perform test for Transmission Relay related DTC’s.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, Check the STARTS SINCE SET counter for P0750

NOTE: This counter only applies to the last DTC set.

Is the STARTS SINCE SET counter for P0750 set at 0?

Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







With the DRBIII t, actuate the L/R Solenoid.

Monitor the L/R Solenoid LED on the Transmission Simulator.

Did the L/R Solenoid LED on the Transmission Simulator blink on and off?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.




Using a 12-volt test light connected to ground, check the Transmission Control Relay

Output circuit in the Transmission Solenoid/TRS Assembly harness connector.



Yes

→ Go To 7

No

→ Repair the Transmission Control Relay Output circuit for an open or high resistance.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

73

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION


Disconnect the TCM harness connector

Disconnect the Transmission Solenoid /TRS Assembly harness connector


Measure the resistance of the L/R Solenoid Control circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the L/R Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the L/R Solenoid Control circuit.


Yes

→ Repair the L/R Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9






Connect a jumper wire between the Fused B+ circuit and the Transmission Control



Measure the voltage of the L/R Solenoid Control circuit in the TCM harness connector.


Yes

→ Repair the L/R Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Transmission Control Module per the Service Information. WITH THE DRBIII t PERFORM QUICK LEARN.


TEST - VER 1.

74

TRANSMISSION


Continued

TEST

11

ACTION




Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

75

TRANSMISSION

Symptom:

P0755-2C SOLENOID CIRCUIT



When Monitored: Initially at power-up, then every 10 seconds thereafter. They will also be tested immediately after a gear ratio or pressure switch error is detected.


POSSIBLE CAUSES




2C SOLENOID CONTROL CIRCUIT OPEN

2C SOLENOID CONTROL CIRCUIT SHORT TO GROUND

2C SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE

SOLENOID/TRS ASSEMBLY - 2C SOLENOID

TCM - 2C SOLENOID CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

76

TRANSMISSION

P0755-2C SOLENOID CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION

With the DRBIII t, check for other Transmission DTC’s.

Are there any Transmission Control Relay related DTC’s P0890, P0891 or P0888 present?

Yes



TEST - VER 1.

No

→ Go To 3

With the DRBIII t, Check the STARTS SINCE SET counter for P0755.



Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS




Install Transmission Simulator, Miller tool #8333.



Monitor the 2C Solenoid LED on the Transmission Simulator.

With the DRBIII t, actuate the 2C Solenoid.

Did the 2C Solenoid LED on the Transmission Simulator blink on and off?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace Transmission Solenoid/TRS Assembly per the Service

Information.


TEST - VER 1.








Yes

→ Go To 7

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

77

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION


Disconnect the Transmission Control Module harness connector.



Measure the resistance of the 2C Solenoid Control circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the 2C Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the 2C Solenoid Control circuit.


Yes

→ Repair the 2C Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9




Remove the Transmission Control Relay from the PDC..





Measure the voltage of the 2C Solenoid Control circuit in the Transmission Control

Module harness connector.


Yes

→ Repair the 2C Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

78

TRANSMISSION


Continued

TEST

11

ACTION




Yes

→ Repair as necessary


TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

79

TRANSMISSION

Symptom:

P0760-OD SOLENOID CIRCUIT


P0760-OD SOLENOID CIRCUIT



POSSIBLE CAUSES




OD SOLENOID CONTROL CIRCUIT OPEN

OD SOLENOID CONTROL CIRCUIT SHORT TO GROUND

OD SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE

SOLENOID/TRS ASSEMBLY - OD SOLENOID

TCM - OD SOLENOID CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

80

TRANSMISSION

P0760-OD SOLENOID CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTC’s P0890, P0891 or P0888 present.

Yes



TEST - VER 1.

No

→ Go To 3




Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Monitor the OD Solenoid LED on the Transmission Simulator.

With the DRBIII t, actuate the OD Solenoid.

Did the OD Solenoid LED on the Transmission Simulator blink on and off?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.





Output circuit in the Solenoid/TRS Assembly harness connector.



Yes

→ Go To 7

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

81

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION





Measure the resistance of the OD Solenoid Control circuit from the Transmission

Control Module harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the OD Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the OD Solenoid Control circuit.


Yes

→ Repair the OD Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Disconnect the Solenoid/TRS Assembly harness connector.






Measure the voltage of the OD Solenoid Control circuit in the Transmission Control



Yes

→ Repair the OD Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

82

TRANSMISSION


Continued

TEST

11

ACTION




Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

83

TRANSMISSION

Symptom:

P0765-UD SOLENOID CIRCUIT


P0765-UD SOLENOID CIRCUIT



POSSIBLE CAUSES




UD SOLENOID CONTROL CIRCUIT OPEN

UD SOLENOID CONTROL CIRCUIT SHORT TO GROUND

UD SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE

SOLENOID/TRS ASSEMBLY - UD SOLENOID

TCM - UD SOLENOID CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

84

TRANSMISSION

P0765-UD SOLENOID CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTCs P0890, P0891or P0888 present?

Yes

→ Refer to symptom list and perform test for Transmission Control

Relay related DTCs.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, Check the STARTS SINCE SET counter for P0765



Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Monitor the UD Solenoid LED on the Transmission Simulator.

With the DRBIII t, actuate the UD Solenoid.

Did the UD Solenoid LED on the Transmission Simulator blink on and off?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.








Yes

→ Go To 7

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

85

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION





Measure the resistance of the UD Solenoid Control circuit between the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the UD Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Disconnect the Transmission Solenoid/TRS harness connector.


Measure the resistance between ground and the UD Solenoid Control circuit.


Yes

→ Repair the UD Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9









Measure the voltage of the UD Solenoid Control circuit in the TCM harness connector.


Yes

→ Repair the UD Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the TCM per the Service Information. WITH THE DRBI-

II t PERFORM QUICK LEARN.


TEST - VER 1.

86

TRANSMISSION


Continued

TEST

11

ACTION




Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

87

TRANSMISSION

Symptom:






POSSIBLE CAUSES




4C SOLENOID CONTROL CIRCUIT OPEN

4C SOLENOID CONTROL CIRCUIT SHORT TO GROUND

4C SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE

SOLENOID/TRS ASSEMBLY - 4C SOLENOID

TCM - 4C SOLENOID CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

88

TRANSMISSION


Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTC’s P0890, P0891 or P0888 present?

Yes



TEST - VER 1.

No

→ Go To 3




Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Remove the Starter Control Relay from the PDC.





Monitor the 4C Solenoid LED on the Transmission Simulator, Miller tool #8333.

With the DRBIII t, actuate the 4C Solenoid.

Did the 4C Solenoid LED on the Transmission Simulator blink on and off?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair.

Replace Transmission Solenoid/TRS Assembly as required.


TEST - VER 1.








Yes

→ Go To 7

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

89

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION





Measure the resistance of the 4C Solenoid Control circuit from the Transmission

Control Module harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the 4C Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the 4C Solenoid Control circuit.


Yes

→ Repair the 4C Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9









Measure the voltage of the 4C Solenoid Control circuit in the Transmission Control



Yes

→ Repair the 4C Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.

90

TRANSMISSION


Continued

TEST

11

ACTION




Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

91

TRANSMISSION

Symptom:

P0841-LR PRESSURE SWITCH SENSE CIRCUIT


P0841-LR PRESSURE SWITCH SENSE CIRCUIT


Set Condition: The appropriate code is set if one of the pressure switches are open or closed at the wrong time in a given gear .

POSSIBLE CAUSES

LOSS OF PRIME P0944 PRESENT


INTERMITTENT CONDITIONS

L/R PRESSURE SWITCH SENSE CIRCUIT OPEN


L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND

L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE

L/R PRESSURE SWITCH

TCM - L/R PRESSURE SWITCH

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

92

TRANSMISSION

P0841-LR PRESSURE SWITCH SENSE CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Is DTC P0944 present in addition to the DTC that you are diagnosing?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to symptom list and perform test for P0944.


TEST - VER 1.

No

→ Go To 3


Are there any Transmission Control Relay related DTC’s P0890, P0891, or P0888 present?.

Yes

→ Refer to symptom list and perform test for the related Transmission Control Relay DTC (s).


TEST - VER 1.

No

→ Go To 4



Is the STARTS SINCE SET counter 2 or less?

Yes

→ Go To 5

No

→ Go To 12




Install Transmission simulator (Miller tool #8333)



Place pressure switch selector on L/R and observe L/R Pressure Switch state on the

DRBIII t screen while pressing the pressure switch test button.

Did the pressure switch state change from open to closed when the switch was depressed?

Yes

→ Go To 6

No

→ Go To 7


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Solenoid/TRS Assembly per the Service Information.


TEST - VER 1.

93

TRANSMISSION


Continued

TEST

7

8

9

ACTION





Measure the resistance of the L/R Pressure Switch Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the L/R Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS




Using a 12-volt test light connected to ground, check the Transmission Relay Output circuit in the Transmission Solenoid/TRS harness connector.



Yes

→ Go To 9

No

→ Repair the Transmission Control Relay Output circuit for an open. If the fuse is open make sure to check for a short to ground.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the L/R Pressure Switch Sense circuit.


Yes

→ Repair the L/R Pressure Switch Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 10

5-SPD AUTO-

MATIC 5-45RFE

TRANS

94

TRANSMISSION


Continued

TEST

10

11

12

ACTION




Remove the Transmission Control Relay.





Measure the voltage of the L/R Pressure Switch Sense circuit in the TCM harness connector.


Yes

→ Repair the L/R Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.





Sump filter installed incorrectly

Reverse carrier snap ring dislodged (typically sets code on heavy throttle acceleration from a dead stop)


Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

95

TRANSMISSION

Symptom:

P0845-2C HYDRAULIC PRESSURE TEST FAILURE



When Monitored: In any forward gear with engine speed above 1000 RPM shortly after a shift and every minute thereafter.

Set Condition: After a shift into a forward gear, with engine speed above 1000 RPM, the

TCM momentarily turns on element pressure to the Clutch circuits that don’t have pressure to identify the correct Pressure Switch closes. If the Pressure Switch does not close 2 times, the DTC sets.

POSSIBLE CAUSES

RELATED LINE PRESSURE DTC’S PRESENT

RELATED PRESSURE SWITCH AND/OR SPEED RATIO DTC’S PRESENT

TCM AND WIRING - LOW LINE PRESSURE


2C PRESSURE SWITCH SENSE CIRCUIT OPEN

5-VOLT SUPPLY CIRCUIT OPEN

POOR LINE PRESSURE SENSOR CONNECTION


2C PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND

5-VOLT SUPPLY CIRCUIT SHORT TO GROUND

2C PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE

EXCESSIVE DEBRIS IN OIL PAN

INTERNAL TRANSMISSION PROBLEM - 2C PRESSURE TEST

TCM - 2C PRESSURE SWITCH

TCM - NO 5 VOLT - LOW LINE PRESSURE SENSOR

96

TRANSMISSION

P0845-2C HYDRAULIC PRESSURE TEST FAILURE —

Continued

TEST

1

2

3

4

ACTION














APPLICABILITY

All

Continue

Go To 2


Are there any line pressure related DTC’s P0867, P0932, P0868, P0869, or P0944 present?

Yes

→ Refer to Symptom List for the related symptom(s).


TEST - VER 1.

No

→ Go To 3


Is the DTC P0732 and/or P0846 present also?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes


Information.


TEST - VER 1.

No

→ Go To 4

With the DRBIII, Check the STARTS SINCE SET counter for P0845.



Yes

→ Go To 5

No

→ Go To 19

5-SPD AUTO-

MATIC 5-45RFE

TRANS

97

TRANSMISSION


Continued

TEST

5

6

7

ACTION

Start the engine.

Warm the transmission to 82° C or 180° F.

Firmly apply the brakes.

With the DRBIII t, monitor the Line Pressure during the following step.

Move the shift lever to each gear position and record the line pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range.

Did the line pressure remain at a steady value between 585 and 655 Kpa or 85 or 95

PSI?

Yes

→ Go To 6

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Firmly push the Transmission Line Pressure Sensor connector towards the Transmission.

Did the Line Pressure change to about 207 kPa or 30 PSI when the connector was pushed?

Yes

→ Disconnect and properly reconnect the Line Pressure Sensor connector. Inspect terminals and repair as necessary.


TEST - VER 1.

No

→ Go To 7




Install the Transmission Simulator Miller tool# 8333.

With the Transmission Simulator select the

9OFF9 position on the 9Input/Output

Speed

9 switch.

NOTE: Check connectors - Clean/repair as necessary.



Using the Transmission Simulator, set the rotary knob to each of the 3 line pressure positions.

NOTE: All three DRBIII

t Line Pressure readings should be steady and ± 2.0

PSI of the reading specified on the Transmission Simulator.

Did the Line Pressure remain steady in all three positions?

Yes

→ Replace the Line Pressure Sensor per the Service Information.


TEST - VER 1.

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

98

TRANSMISSION


Continued

TEST

8

9

10

11

ACTION



Disconnect the Line Pressure Sensor harness connector.


Measure the resistance of the 5-volt Supply circuit from the Line Pressure Sensor harness connector to the TCM harness connector.


Yes

→ Repair the 5-volt Supply circuit for an open.


TEST - VER 1.

No

→ Go To 9

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the 5-volt Supply circuit.


Yes

→ Repair the 5-volt Supply circuit for a short to ground.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN AND REPROGRAM PINION FAC-

TOR.


TEST - VER 1.





With the Transmission Simulator Miller tool# 8333, turn the Pressure Switch selector to 2C.



With the DRBIII t, monitor the 2C Pressure Switch state during the following step.

While pressing and holding the Pressure Switch test button, wiggle the wiring harness and connectors pertaining to the 2C Pressure Switch.

Did the 2C Pressure Switch state change to closed and remain closed while wiggling the wires?

Yes

→ Go To 12

No

→ Go To 14

5-SPD AUTO-

MATIC 5-45RFE

TRANS

99

TRANSMISSION


Continued

TEST

12

13

ACTION

Remove and inspect the Transmission Oil Pan per the Service Information.

Does the Transmission Oil Pan contain excessive debris or contamination?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Repair the cause of the excessive debris in the Transmission Oil

Pan. Refer to the Service Information for the proper procedures.


TEST - VER 1.

No

→ Go To 13


5-SPD AUTO-

MATIC 5-45RFE

TRANS

14

15

Repair

Repair Internal Transmission as necessary. Disassemble and inspect the Valve Body and repair or replace as necessary. If no problems are found in the Valve Body, replace the Transmission

Solenoid/TRS Assembly.


TEST - VER 1.



Disconnect the Transmission Solenoid /TRS Assembly harness connector.


Measure the resistance of the 2C Pressure Switch Sense circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the 2C Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 15




Connect a jumper wire between the Fused B(+) circuit and the Transmission Control







Yes

→ Go To 16

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

100

TRANSMISSION


Continued

TEST

16

17

18

19

ACTION





Measure the resistance between ground and the 2C Pressure Switch Sense circuit.


Yes

→ Repair the 2C Pressure Switch circuit for a short to ground.


TEST - VER 1.

No

→ Go To 17

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS









Measure the voltage of the 2C Pressure Switch Sense circuit in the TCM harness connector.


Yes

→ Repair the 2C Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 18


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.




Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

101

TRANSMISSION

Symptom:

P0846-2C PRESSURE SWITCH SENSE CIRCUIT




Set Condition: The appropriate code is set if one of the pressure switches are open or closed at the wrong time in a given gear .

POSSIBLE CAUSES







2C PRESSURE SWITCH


TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

102

TRANSMISSION

P0846-2C PRESSURE SWITCH SENSE CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION



Yes


Relay related DTCs.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, Check the STARTS SINCE SET counter.


Is the STARTS SINCE SET counter for P0846, 2 or less?

Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







With the Transmission Simulator, turn the Pressure Switch selector switch on 2C.

With the DRBIII t, monitor the 2C Pressure Switch while pressing the Pressure

Switch test button on the Transmission Simulator.

Did the state of the 2C Pressure Switch change while pressing the Pressure Switch

Test button?

Yes

→ Go To 5

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.







Yes



TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

103

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION








Yes

→ Go To 8

No



TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes

→ Repair the 2C Pressure Switch Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9











Yes



TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

104

TRANSMISSION


Continued

TEST

11

ACTION

The conditions necessary to set this DTC are not present at this time.



Check for a Sump filter not installed correctly

Reverse carrier snap ring dislodged ( typically sets on heavy throttle acceleration from a dead stop)


Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

105

TRANSMISSION

Symptom:

P0867-LINE PRESSURE FAULT


P0867-LINE PRESSURE FAULT

When Monitored: Continuously while driving in a forward gear.

Set Condition: The TCM continuously monitors Actual Line Pressure and compares it to

Desired Line Pressure. If the difference between Actual Line Pressure and Desired Line

Pressure is 10 PSI or greater, this code will be set.

POSSIBLE CAUSES



POOR CONNECTION OR WIRING

TRANSMISSION - LINE PRESSURE OUT OF RANGE

TCM - LINE PRESSURE OUT OF RANGE

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

106

TRANSMISSION

P0867-LINE PRESSURE FAULT —

Continued

TEST

2

3

4

5

ACTION


Are there any other line pressure related DTC’s P0932, P0868, or P0869 present?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to symptom list and perform test for other line pressure related DTC’s. Run test for P0932 first if present.


TEST - VER 1.

No

→ Go To 3

CAUTION: Apply Parking Brake

Start the engine.

CAUTION: Firmly apply the brakes.

With the DRBIII t, monitor the Line Pressure, Desired Line Pressure and the TPS

Degrees.

While firmly applying the brakes place shifter in the R position. Then slowly press the accelerator pedal to TPS degree of 15.

Compare the Line Pressure reading to the Desired Line Pressure reading on the

DRBIII t.

Does the Line Pressure and Desired Line Pressure stay within ± 34 kPa or 5 PSI?

No

→ Go To 4

Yes

→ Go To 8

With the DRBIII t, monitor the Line Pressure Sensor voltage while wiggling the wiring harness and connectors pertaining to the Line Pressure Sensor and the

Solenoid/TRS assembly.

Did the voltage remain steady while wiggling the wiring harness and connectors?

Yes

→ Go To 5

No



TEST - VER 1.







Speed

9 switch.



Using the Transmission Simulator, turn the selector switch to each of the 3 Line

Pressure positions.




Does the Line Pressure fluctuate up and down more than 69 kPa or 10 PSI at any of the positions?

Yes

→ Go To 6

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

107

TRANSMISSION

P0867-LINE PRESSURE FAULT —

Continued

TEST

6

7

8

ACTION


Repair

If the transmission is to be repaired, inspect the oil pump per

Service Manual information and replace if necessary. If no problem is found, replace the Solenoid/TRS assembly - stuck Pressure

Control Solenoid.


TEST - VER 1.



Where there any problems found?

Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

108

TRANSMISSION

Symptom:

P0868-LINE PRESSURE LOW


P0868-LINE PRESSURE LOW



Desired Line Pressure. If Actual Line Pressure is more than 10 PSI below Desired Line

Pressure, this code will be set.

POSSIBLE CAUSES

CHECK FOR RELATED DTC’S



5 VOLT SUPPLY CIRCUIT OPEN


5 VOLT SUPPLY CIRCUIT SHORT TO GROUND

5 VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE

PRESSURE CONTROL SOLENOID CONTROL CIRCUIT SHORT TO VOLTAGE

INTERNAL TRANSMISSION - LINE PRESSURE LOW

LINE PRESSURE SENSOR - CALIBRATION OUT OF LIMITS

PLUGGED FILTER

TCM - LINE PRESSURE LOW

109

TRANSMISSION

P0868-LINE PRESSURE LOW —

Continued

TEST

1

2

3

4

ACTION














APPLICABILITY

All

Continue

Go To 2


Is the DTC P0932 present also?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to symptom list for problems related to P0932.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, check the STARTS SINCE SET counter for P0868.


Is the START SINCE SET COUNTER 2 or less?

Yes

→ Go To 4

No

→ Go To 14


With the DRBIII t, monitor the Line Pressure, firmly push the Line Pressure Sensor harness connector towards the Transmission.


Yes



TEST - VER 1.

No

→ Go To 5

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

110

TRANSMISSION


Continued

TEST

5

6

7

ACTION







Speed

9 switch.









Yes

→ Go To 6

No

→ Go To 9

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Install the Line Pressure Adaptor, Miller tool# 8259, and the Pressure Gage, Miller tool# C-3293, 0 to 2000 kPa or 0 to 300 PSI.


With the DRBIII t monitor the Line Pressure.

Monitor the reading on the Pressure Gage Miller tool# C-3293.

Compare the Line Pressure readings between the DRBIII t and the Pressure Gage.

Is the Line Pressure Gauge reading within 34 kPa or 5 PSI of the DRBIII t reading?

Yes

→ Go To 7

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Remove and inspect the Transmission Oil Pan for excessive debris per the Service

Information.

Remove and inspect the Primary Oil Filter per the Service Information.

NOTE: Make sure the Primary Transmission Oil Filter and/or O-ring is not cracked or split.

Does the Oil Pan contain excessive debris and/or is the Primary Oil Filter cracked or plugged?

Yes

→ Repair the plugged, cracked, or split Primary Transmission Oil

Filter and/or O-ring. If the Primary Transmission Oil Filter is plugged refer to the Service Information for the proper Hydraulic repair procedure.


TEST - VER 1.

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS

111

TRANSMISSION


Continued

TEST

8

9

10

11

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission problem. If the transmission is to be repaired, inspect the oil pump per the Service Information and replace if necessary. If no problem is found, replace the Solenoid/

TRS assembly.


TEST - VER 1.







Yes



TEST - VER 1.

No

→ Go To 10







Yes



TEST - VER 1.

No

→ Go To 11




Place a jumper wire between the Fused B+ circuit and the Transmission Control




Measure the voltage of the 5-volt Supply circuit in the TCM harness connector.


Yes

→ Repair the 5-volt Supply circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 12

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

112

TRANSMISSION


Continued

TEST

12

13

14

ACTION






Connect a jumper wire between the Fused B(+) circuit and the Trans Relay Output circuit in the relay connector.


Measure the voltage of the Pressure Control Solenoid control circuit in the TCM harness connector.


Yes

→ Repair the Pressure Control Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 13

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.





Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

113

TRANSMISSION

Symptom:

P0869-LINE PRESSURE HIGH


P0869-LINE PRESSURE HIGH



Desired Line Pressure. If Actual Line Pressure is more than 10 PSI above Desired Line

Pressure, this code will be set.

POSSIBLE CAUSES

CHECK FOR RELATED DTC’S

TCM AND WIRING - LINE PRESSURE HIGH




PRESSURE CONTROL SOLENOID CONTROL CIRCUIT OPEN


PRESSURE CONTROL SOLENOID CONTROL CIRCUIT SHORT TO GROUND

INTERNAL TRANSMISSION - LINE PRESSURE HIGH

LINE PRESSURE SENSOR - CALIBRATION OUT OF LIMITS

TCM - LINE PRESSURE HIGH

114

TRANSMISSION

P0869-LINE PRESSURE HIGH —

Continued

TEST

1

2

3

4

ACTION














APPLICABILITY

All

Continue

Go To 2

With the DRBIII t, check for other Transmission DTC’s


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to symptom list for problems related to P0932.


TEST - VER 1.

No

→ Go To 3

The transmission temperature must be at least 180 degrees for the results of this test to be valid.

With the DRBIII t, check the STARTS SINCE SET counter for P0869.

Is the STARTS SINCE SET COUNTER 2 or less?

Yes

→ Go To 4

No

→ Go To 13


With the DRBIII t, monitor the Transmission Line Pressure.

Firmly push the Line Pressure Sensor harness connector inward towards the

Transmission.

Did the Line Pressure change to about 207 kPa or 30 PSI when the sensor connector was pushed?

Yes



TEST - VER 1.

No

→ Go To 5

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

115

TRANSMISSION


Continued

TEST

5

6

7

ACTION







Speed

9 switch.









Yes

→ Go To 6

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Install the Line Pressure Adaptor, Miller tool# 8259, and the Pressure Gage, Miller tool# C-3293, 0 to 2000 kPa or 0 to 300 PSI.


With the DRBIII t, monitor the Line Pressure.

Monitor the reading on the Pressure Gage, Miller tool# C-3293.

Compare the Line Pressure reading between the DRBIII t and the Pressure Gage.

Is the Pressure Gauge reading within 34 kPa or 5 PSI of the DRBIII t reading?

Yes

→ Go To 7

No

→ Replace the Line Pressure Sensor.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

8

Repair

If the transmission is to be repaired, inspect the oil pump per the

Service Information and replace if necessary. If no problem is found, replace the Solenoid/TRS assembly - stuck Pressure Control Solenoid.


TEST - VER 1.





Measure the resistance of the 5-volt Supply circuit from the Line Pressure Sensor harness connector to the Transmission Control Module harness connector.


Yes



TEST - VER 1.

No

→ Go To 9

5-SPD AUTO-

MATIC 5-45RFE

TRANS

116

TRANSMISSION


Continued

TEST

9

10

11

12

ACTION



Disconnect the Transmission Solenoid /TRS harness connector


Measure the resistance of the Pressure Control Solenoid Control circuit from the

Transmission Control Module harness connector to the Solenoid/TRS harness connector.


Yes

→ Repair the Pressure Control Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 10

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes



TEST - VER 1.

No

→ Go To 11

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the Pressure Control Solenoid Control circuit.


Yes

→ Repair the Pressure Control Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 12


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

117

TRANSMISSION


Continued

TEST

13

ACTION





Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

118

TRANSMISSION

Symptom:

P0870-OD HYDRAULIC PRESSURE TEST FAILURE


P0870-OD HYDRAULIC PRESSURE TEST FAILURE



TCM momentarily turns on element pressure to the clutch circuits that don’t have pressure to identify the correct pressure switch closes. If the pressure switch does not close

2 times the DTC sets.

POSSIBLE CAUSES


RELATED SPEED RATIO AND/OR PRESSURE SWITCH DTC’S PRESENT




OD PRESSURE SWITCH SENSE CIRCUIT OPEN




OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND

OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE


INTERNAL TRANSMISSION PROBLEM - OD PRESSURE TEST

TCM - NO 5 VOLTS - LOW LINE PRESSURE SENSOR

TCM - OD PRESSURE SWITCH

119

TRANSMISSION

P0870-OD HYDRAULIC PRESSURE TEST FAILURE —

Continued

TEST

1

2

3

4

ACTION














APPLICABILITY

All

Continue

Go To 2


Are there any Line Pressure related DTC’s P0867, P0932, P0868, P0869, or P0944 present?

Yes

→ Refer to symptom list and perform appropriate test.


TEST - VER 1.

No

→ Go To 3



5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes


Information.


TEST - VER 1.

No

→ Go To 4




Yes

→ Go To 5

No

→ Go To 19

5-SPD AUTO-

MATIC 5-45RFE

TRANS

120

TRANSMISSION


Continued

TEST

5

6

7

8

ACTION

Start engine.

Warm transmission to 82° C or 180 ° F.

Firmly apply brakes.


Move the shift lever to each gear position and record the Line Pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range.

Did the Line Pressure remain at a steady value between 585 and 655 kPa or 85 and

95 PSI?

Yes

→ Go To 6

No

→ Go To 11



NOTE: Failure to remove Starter Relay can cause a TCM - No Response condition.




Speed

9 switch.




Pressure positions.




Did the Line Pressure remain steady in all 3 positions?

Yes



TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


With the DRBIII t, monitor the Line Pressure while firmly pushing the Line Pressure

Sensor connector towards the Transmission.


Yes

→ Disconnect and properly reconnect the Line Pressure Sensor harness connector. Inspect terminals and repair as necessary.


TEST - VER 1.

No

→ Go To 8







Yes

→ Repair the 5-volt supply circuit for an open.


TEST - VER 1.

No

→ Go To 9

5-SPD AUTO-

MATIC 5-45RFE

TRANS

121

TRANSMISSION


Continued

TEST

9

10

11

12

ACTION







Yes



TEST - VER 1.

No

→ Go To 10

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.







With the DRBIII t, monitor the OD Pressure Switch state during the following steps.

With the Transmission Simulator Miller tool# 8333, place the selector switch on OD.

While pressing the Pressure Switch test button, wiggle the wiring harness and connectors pertaining to the OD Pressure Switch.

Did the OD pressure switch state change to closed and remain closed while wiggling the wires?

Yes

→ Go To 12

No

→ Go To 14



5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes




TEST - VER 1.

No

→ Go To 13

122

TRANSMISSION


Continued

TEST

13

14

15

16

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.





Measure the resistance of the OD Pressure Switch Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the OD Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 15



Disconnect the Transmission Control Relay from the PDC.





Output circuit at the Solenoid/TRS Assembly harness connector.



Yes

→ Go To 16

No



TEST - VER 1.





Measure the resistance between ground and the OD Pressure Switch Sense circuit.


Yes

→ Repair the OD Pressure Switch circuit for a short to ground.


TEST - VER 1.

No

→ Go To 17

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

123

TRANSMISSION


Continued

TEST

17

18

19

ACTION









Measure the voltage of the OD Pressure Switch Sense circuit in the TCM harness connector.


Yes

→ Repair the OD Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 18

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.





Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

124

Symptom:

P0871-OD PRESSURE SWITCH SENSE CIRCUIT

TRANSMISSION


P0871-OD PRESSURE SWITCH SENSE CIRCUIT


Set Condition: The appropriate code is set if one of the pressure switches are open or closed at the wrong time in a given gear.

POSSIBLE CAUSES



OD PRESSURE SWITCH SENSE CIRCUIT OPEN


OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND


OD PRESSURE SWITCH

TCM - OD PRESSURE SWITCH

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

125

TRANSMISSION

P0871-OD PRESSURE SWITCH SENSE CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTC’s, P0890, P0891, or P0888 present?

Yes


Relay related DTCs.


TEST - VER 1.

No

→ Go To 3

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Yes

→ Go To 4

No

→ Go To 11







With the Transmission Simulator, turn the Pressure Switch selector switch to OD.

With the DRBIII t, monitor the OD Pressure Switch state while pressing the

Pressure Switch Test button on the Transmission Simulator.

Did the state of the OD Pressure Switch change while pressing the Pressure Switch

Test button?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.





Measure the resistance of the OD Pressure Switch Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the OD Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

126

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION




Using a 12-volt test light connected to ground, check the Transmission Relay output circuit in the Transmission Solenoid/TRS harness connector.



Yes

→ Go To 8

No

→ Repair cause of unlit or dim test light. Open circuit or high resistance in Transmission Relay output circuit.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the OD Pressure Switch Sense circuit.


Yes

→ Repair the OD Pressure Switch Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9




Remove the Transmission Control Relay the PDC.


Connect a jumper wire between the Fused B+ circuit and Transmission Control Relay



Measure the voltage of the OD Pressure Switch Sense circuit at the TCM harness connector.


Yes



TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

127

TRANSMISSION


Continued

TEST

11

ACTION




Check for a Sump filter not installed correctly

Reverse carrier snap ring dislodged ( typically sets on heavy throttle acceleration from a dead stop)


Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

128

TRANSMISSION

Symptom:

P0875-UD HYDRAULIC PRESSURE TEST FAILURE


P0875-UD HYDRAULIC PRESSURE TEST FAILURE



TCM momentarily turns on element pressure to the clutch circuits don’t have pressure to identify the correct pressure switch closes. If the pressure switch does not close 2 times the

DTC sets.

POSSIBLE CAUSES


RELATED SPEED RATIO AND/OR PRESSURE SWITCH DTC’S PRESENT






UD PRESSURE SWITCH SENSE CIRCUIT OPEN


UD PRESSURE SWITCH CIRCUIT SHORT TO GROUND

UD PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE


INTERNAL TRANSMISSION - UD PRESSURE TEST

TCM - NO 5 VOLTS - LOW LINE PRESSURE SENSOR

TCM - UD PRESSURE SWITCH

129

TRANSMISSION

P0875-UD HYDRAULIC PRESSURE TEST FAILURE —

Continued

TEST

1

2

3

4

ACTION














APPLICABILITY

All

Continue

Go To 2


Are there any line pressure related DTC’s, P0867, P0932, P0868, P0869, or P0944 present?

Yes

→ Refer to Symptom List for the related symptom(s).


TEST - VER 1.

No

→ Go To 3


Are the DTC’s P0731, P0732, P0733 and/or P0876 present?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes


Information.


TEST - VER 1.

No

→ Go To 4




Yes

→ Go To 5

No

→ Go To 19

5-SPD AUTO-

MATIC 5-45RFE

TRANS

130

TRANSMISSION


Continued

TEST

5

6

7

8

ACTION

Start engine.



With the DRBIII t, monitor the Line Pressure in the following step.

Move the shift lever to each gear position and record the Line Pressure reading. Allow the pressure to stabilize for at least 5 seconds in each range.

Did the Line Pressure remain at a steady value between 585 and 655 kPa or 85 and

95 PSI?

Yes

→ Go To 6

No

→ Go To 11


With the DRBIII t, monitor the Line Pressure for the following step.

Firmly push the Line Pressure Sensor connector inward towards the Transmission.


Yes

→ Disconnect and properly reconnect the Line Pressure Sensor harness connector. Inspect terminals and repair as necessary.


TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS




Install the Transmission Simulator Miller tool #8333.



Speed

9 switch.



With the DRBIII t, monitor the Line Pressure in the following step.

With the Transmission Simulator, set the rotary knob to each of the 3 line pressure positions.





Yes



TEST - VER 1.

No

→ Go To 8







Yes



TEST - VER 1.

No

→ Go To 9

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

131

TRANSMISSION


Continued

TEST

9

10

11

12

ACTION







Yes



TEST - VER 1.

No

→ Go To 10

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.







With the DRBIII t, monitor the UD Pressure Switch state.

With the Transmission Simulator Miller tool# 8333, place the selector switch on UD.

While pressing and holding the Pressure Switch test button, wiggle the wiring harness and connectors pertaining to the UD Pressure Switch.

Did the UD Pressure Switch state change to closed and remain closed while wiggling the wires?

Yes

→ Go To 12

No

→ Go To 14

Remove and inspect Transmission Oil Pan per the Service Information.

Does it contain excessive debris or contamination?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes




TEST - VER 1.

No

→ Go To 13

132

TRANSMISSION


Continued

TEST

13

14

15

16

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.








Yes

→ Go To 15

No



TEST - VER 1.





Measure the resistance of the UD Pressure Switch Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the UD Pressure Switch Sense circuit for an open..


TEST - VER 1.

No

→ Go To 16





Measure the resistance between ground and the UD Pressure Switch Sense circuit.


Yes

→ Repair the UD Pressure Switch circuit for a short to ground.


TEST - VER 1.

No

→ Go To 17

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

133

TRANSMISSION


Continued

TEST

17

18

19

ACTION









Measure the voltage of the UD Pressure Switch Sense circuit in the TCM harness connector.


Yes

→ Repair the UD Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 18

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.




Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

134

Symptom:

P0876-UD PRESSURE SWITCH SENSE CIRCUIT

TRANSMISSION


P0876-UD PRESSURE SWITCH SENSE CIRCUIT


Set Condition: This DTC is set if the UD pressure switch is in the wrong state for the current gear. For example, this code would be set if the UD pressure switch remained off while the transmission was in second gear.

POSSIBLE CAUSES




UD PRESSURE SWITCH SENSE CIRCUIT OPEN

UD PRESSURE SWITCH CIRCUIT SHORT TO GROUND


UD PRESSURE SWITCH

TCM - UD PRESSURE SWITCH

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

135

TRANSMISSION

P0876-UD PRESSURE SWITCH SENSE CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTCs P0890, P0891, and/or P0888 present?

Yes


Relay related DTC’s.


TEST - VER 1.

No

→ Go To 3

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Yes

→ Go To 4

No

→ Go To 11







With the Transmission Simulator, turn the Pressure Switch selector switch to UD.

With the DRBIII t, monitor the UD Pressure Switch state while pressing the

Pressure Switch Test button on the Transmission Simulator.

Did the state of the UD Pressure Switch change while pressing the Pressure Switch

Test button?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.

Turn ignition off to the lock position.







Yes

→ Go To 7

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

136

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION





Measure the resistance of the UD Pressure Switch Sense circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the UD Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 8

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the UD Pressure Switch Sense circuit.


Yes

→ Repair the UD Pressure Switch Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9

5-SPD AUTO-

MATIC 5-45RFE

TRANS











Yes



TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair.


PERFORM QUICK LEARN


TEST - VER 1.

137

TRANSMISSION


Continued

TEST

11

ACTION




Sump filter installed incorrectly.



Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

138

TRANSMISSION

Symptom:

P0884-POWER UP AT SPEED


P0884-POWER UP AT SPEED

When Monitored: When TCM (Transmission Control Module) initially powers-up.

Set Condition: If the TCM powers up and senses a valid forward gear PRNDL code and the output RPM is above 800 RPM (approximate. 32 km/h 20 MPH) the code will be set.

POSSIBLE CAUSES

POWER UP AT SPEED

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2

This DTC is set when the TCM is initialized while the vehicle is moving down the road in a valid forward gear.


NOTE: Check all of the Fused B(+), Fused Ignition Switch Output, and ground circuits to the TCM for an intermittent open or short to ground.


Repair



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

139

TRANSMISSION

Symptom:

P0888-RELAY OUTPUT ALWAYS OFF


P0888-RELAY OUTPUT ALWAYS OFF

When Monitored: Continuously

Set Condition: This code is set when less than 3 volts are present at the transmission control relay output (pins 16,17 and 36) circuits at the Transmission Control Module

(TCM) when the TCM is energizing the relay.

POSSIBLE CAUSES


FUSED B+ CIRCUIT OPEN


TRANSMISSION CONTROL RELAY CONTROL CIRCUIT OPEN

TRANSMISSION CONTROL RELAY GROUND CIRCUIT OPEN

TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORTED TO GROUND

TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORTED TO GROUND

TRANSMISSION CONTROL RELAY STUCK OPEN

TCM - TRANSMISSION CONTROL RELAY ALWAYS OFF

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

140

TRANSMISSION

P0888-RELAY OUTPUT ALWAYS OFF —

Continued

TEST

2

3

4

ACTION



Is the STARTS SINCE SET counter equal to 0?

Yes

→ Go To 3

No

→ Go To 11




Using a 12-volt test light connected to ground, check the Fused B(+) circuit in the

Transmission Control Relay connector.



Yes

→ Go To 4

No

→ Repair the Fused B(+) circuit for an open. If the fuse is open make sure to check for a short to ground.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5








Using a 12-volt test light connected to ground, check the all three Transmission

Control Relay Output circuits in the TCM harness connector.


Does the test light illuminate brightly on all three circuits?

Yes

→ Go To 5

No



TEST - VER 1.





Measure the resistance of the Transmission Control Relay Control circuit between the Transmission Control Relay connector and the TCM harness connector.


Yes

→ Repair the Transmission Control Relay Control circuit for an open.


TEST - VER 1.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

141

TRANSMISSION


Continued

TEST

6

7

8

9

ACTION


Disconnect the Transmission Control Relay from the PDC.


Measure the resistance between ground and the Transmission Control Relay ground circuit in the Transmission Control Relay connector..


Yes

→ Repair the Ground circuit for an open.


TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the Transmission Control Relay Control circuit.


Yes

→ Repair the Transmission Control Relay Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the Transmission Control Relay Output circuit.


Yes

→ Repair the Transmission Control Relay Output circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9



Remove the Transmission Control Relay




Measure the voltage of the Transmission Control Relay Output circuit in the TCM harness connector.


Yes

→ Replace the Transmission Control Relay.


TEST - VER 1.

No

→ Go To 10

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

142

TRANSMISSION


Continued

TEST

10

11

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.





Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

143

TRANSMISSION

Symptom:

P0890-SWITCHED BATTERY


P0890-SWITCHED BATTERY

When Monitored: Ignition key is turned from



Set Condition: This code is set if the Transmission Control Module (TCM) senses voltage on any of the pressure switch inputs prior to the TCM energizing the relay.

POSSIBLE CAUSES




L/R PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE



TCM- SWITCHED BATTERY

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

144

TRANSMISSION

P0890-SWITCHED BATTERY —

Continued

TEST

2

3

4

ACTION



Is the

9Starts Since Set9 counter equal to zero?

Yes

→ Go To 3

No

→ Go To 9











Yes



TEST - VER 1.

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Relay Output circuit in the Transmission Control Relay harness connector.




Yes



TEST - VER 1.

No

→ Go To 5

5-SPD AUTO-

MATIC 5-45RFE

TRANS

145

TRANSMISSION


Continued

TEST

5

6

7

ACTION











Yes

→ Repair the L/R Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 6

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS









Measure the voltage of the OD Pressure Switch Sense circuit in the TCM harness connector.


Yes



TEST - VER 1.

No

→ Go To 7











Yes



TEST - VER 1.

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS

146

TRANSMISSION


Continued

TEST

8

9

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.





Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

147

TRANSMISSION

Symptom:

P0891-TRANSMISSION RELAY ALWAYS ON


P0891-TRANSMISSION RELAY ALWAYS ON

When Monitored: When ignition key is turned from



Set Condition: This code is set if the Transmission Control Module (TCM) senses greater than 3 volts at the Trans Control Relay Output terminal(s) of the TCM prior to the TCM energizing the relay.

POSSIBLE CAUSES


TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORT TO VOLTAGE

TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORT TO VOLTAGE

TRANSMISSION CONTROL RELAY STUCK CLOSED

TCM - TRANSMISSION CONTROL RELAY ALWAYS ON

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

148

TRANSMISSION

P0891-TRANSMISSION RELAY ALWAYS ON —

Continued

TEST

2

3

4

5

6

ACTION



Is the STARTS SINCE SET counter equal to 0?

Yes

→ Go To 3

No

→ Go To 7






Measure the voltage at the Transmission Control Relay Control circuit in the



Yes

→ Repair the Transmission Control Relay Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS




Measure the voltage at the Transmission Control Relay Output circuit in the



Yes

→ Repair the Transmission Control Relay Output circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 5




Measure the resistance between the Fused B(+) circuit and the Transmission Control

Relay Output Circuit, Pins 30 and 87, of the Transmission Control Relay.


Yes

→ Go To 6

No

→ Replace the Transmission Control Relay.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

149

TRANSMISSION

P0891-TRANSMISSION RELAY ALWAYS ON —

Continued

TEST

7

ACTION





Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

150

TRANSMISSION

Symptom:

P0932-LINE PRESSURE SENSOR FAULT


P0932-LINE PRESSURE SENSOR FAULT

When Monitored: Continuously with engine running.

Set Condition: If the Line Pressure Sensor (LPS) voltage is below 0.2 volts or above 4.75

volts the code will be set.

POSSIBLE CAUSES



GROUND CIRCUIT OPEN

LINE PRESSURE SENSOR SIGNAL CIRCUIT OPEN


LINE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND

LINE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

LINE PRESSURE SENSOR

TCM - HIGH LINE PRESSURE SENSOR

TCM - LOW LINE PRESSURE SENSOR

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

151

TRANSMISSION

P0932-LINE PRESSURE SENSOR FAULT —

Continued

TEST

2

3

4

5

ACTION


With the DRBIII t, read the Line Pressure Sensor voltage.

Is the Line Pressure Sensor voltage between 0.2 and 4.75 volts?

Yes

→ Go To 3

No

→ Go To 4




Yes



TEST - VER 1.

No

→ Test Complete.






With the DRBIII t, monitor the Line Pressure.

Using the Transmission Simulator, set the rotary switch to each of the 3 line pressure positions.

Note: The readings should be within ± 2.0 PSI on the DRBIII t of the pressure reading specified on Transmission Simulator.

What is the Line Pressure Sensor voltage?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Below 0.2 volts (241Kpa or 35 PSI).

Go To 5

Between .2 and 4.75 volts (76 PSI)

Go To 9

Above 4.75 volts (1586 Kpa or 230 PSI)

Go To 10



Disconnect the Line Pressure Sensor connector.


Measure the resistance of the 5-Volt Supply circuit from the Line Pressure Sensor connector to the TCM connector.


Yes



TEST - VER 1.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

152

TRANSMISSION


Continued

TEST

6

7

8

9

10

ACTION

Turn ignition switch to the lock position.




Measure the resistance between the 5-Volt Supply circuit and ground.


Yes



TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Turn ignition switch to the lock position.




Measure the resistance between the Line Pressure Sensor Signal circuit and ground.


Yes

→ Repair the Line Pressure Sensor Signal circuit for a short to ground.


TEST - VER 1.

No

→ Go To 8


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Line Pressure Sensor.


TEST - VER 1.





Measure the resistance of the Ground circuit from the Line Pressure Sensor connector to the TCM connector.


Yes

→ Repair the Ground circuit for an open.


TEST - VER 1.

No

→ Go To 11

5-SPD AUTO-

MATIC 5-45RFE

TRANS

153

TRANSMISSION


Continued

TEST

11

12

13

ACTION


Disconnect the TCM harness connector..



Measure the resistance of the Line Pressure Sensor Signal circuit from the Line

Pressure Sensor connector to the TCM connector.


Yes

→ Repair the Line Pressure Sensor Signal circuit for an open.


TEST - VER 1.

No

→ Go To 12

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Turn the ignition switch to the lock position.


Remove the Transmission Control Relay.


Connect a jumper wire between the Fused B(+) and the Transmission Relay Output circuits in the relay connector.

Turn ignition on.

Measure the voltage of the Line Pressure Sensor Signal circuit in the TCM connector.


Yes

→ Repair the Line Pressure Sensor Signal circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 13


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

154

TRANSMISSION

Symptom:

P0944-LOSS OF PRIME


P0944-LOSS OF PRIME

When Monitored: If the transmission is slipping in any forward gear and the pressure switches are not indicating pressure, a loss of prime test is run.

Set Condition: If the transmission begins to slip in a forward gear and the pressure switch(s) that should be closed are open a loss of prime test begins. Available elements are turned on by the TCM to see if pump prime exists. The DTC sets if no pressure switch(s) respond.

POSSIBLE CAUSES

INVALID PRNDL CODE

INTERMITTENT OPERATION

TRANSMISSION OIL FILTER

OIL PUMP - LOSS OF PRIME

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

155

TRANSMISSION

P0944-LOSS OF PRIME —

Continued

TEST

2

3

4

5

ACTION

Start the engine.

The transmission must be at operating temperature prior to checking pressure. A cold transmission will give higher readings.

Firmly apply the brakes and place transmission in (R) reverse.


Is the Line Pressure below 1034 kpa (150 PSI) or is it fluctuating more than +/- 69 kpa (10 PSI).

No

→ Go To 3

Yes

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Verify with the customer if a delayed engagement and/or an intermittent

9No Drive9 condition has occurred.

If the customers answer is

9No9 erase the DTC and return the vehicle to the customer.

Make sure to check for any TSBs or controller flash updates that my apply.

Has the customer experienced any delayed engagement and/or

9No Drive9 conditions?

Yes

→ Repair internal transmission problem as necessary. Replace the

Transmission Oil Pump if inspection reveals no signs of internal seal leakage. Refer to the Service Information for the proper repair procedure.


TEST - VER 1.

No

→ Test Complete.

Using the DRBIII t, perform a Shift Lever Position test. Follow the instructions on the DRBIII t.

Did the Shift Lever Position Test pass?

Yes

→ Go To 5

No

→ Refer to symptom list and perform the appropriate test for DTC

P0706.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Remove and inspect the Primary Oil Filter per the Service Information.

Inspect the oil filter O-ring for damage and proper installation.

Does the Oil Pan contain excessive debris and/or is the Oil Filter plugged or O-ring damaged?

Yes

→ Repair the cause of the plugged transmission oil filter or excessive debris, Seal installed onto filter neck instead of into pump bore, seal not fully seated against pump housing, filter neck not engaged into pump. See Service information.


TEST - VER 1.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

156

TRANSMISSION

P0944-LOSS OF PRIME —

Continued

TEST

6

ACTION


Repair

Replace the Transmission or Transmission Oil Pump as necessary.

Refer to the Service Information for the proper repair procedure.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

157

TRANSMISSION

Symptom:





Set Condition: After a shift into a forward gear, with engine speed > 1000 RPM, the TCM momentarily turns on element pressure to the clutch circuits that don’t have pressure to identify the correct pressure switch closes. If the pressure switch does not close 2 times the

DTC sets

POSSIBLE CAUSES


RELATED SPEED RATIO AND/OR PRESSURE SWITCH DTC PRESENT











INTERNAL TRANSMISSION - 4C PRESSURE TEST


TCM - NO 5 VOLTS LOW LINE PRESSURE SENSOR

158

TRANSMISSION


Continued

TEST

1

2

3

4

ACTION














APPLICABILITY

All

Continue

Go To 2


Are there any Line Pressure related DTC’s P0867, P0932, P0868, P0869, or P0944 present?

Yes

→ Refer to symptom list and perform the appropriate test.


TEST - VER 1.

No

→ Go To 3



5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes


Information.


TEST - VER 1.

No

→ Go To 4

Perform a visual inspection of all connectors, wiring, and cooler connections before proceeding. Repair as necessary.




Yes

→ Go To 5

No

→ Go To 19

5-SPD AUTO-

MATIC 5-45RFE

TRANS

159

TRANSMISSION


Continued

TEST

5

6

7

ACTION

Start the engine.



CAUTION: Firmly apply the brakes.

With the brakes firmly applied, move the shift lever to each gear position and record the Transmission Line Pressure for each position.

Allow the pressure to stabilize for at least 5 seconds in each range.

Did the line pressure remain at a steady value between 586 and 655 Kpa or 85 and

95 PSI?

Yes

→ Go To 6

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


With the DRBIII t in Sensors, monitor the Actual Line Pressure.

While monitoring the Line Pressure, firmly push the Line Pressure Sensor harness connector towards the transmission.

Did the Line Pressure change to about 207 kPa or 30 PSI when the harness connector was pushed

Yes



TEST - VER 1.

No

→ Go To 7







Speed

9 switch.







Pressure positions.


Yes



TEST - VER 1.

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS

160

TRANSMISSION


Continued

TEST

8

9

10

11

ACTION







Yes



TEST - VER 1.

No

→ Go To 9

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes

→ Repair 5-volt supply circuit for a short to ground.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.







On the Transmission Simulator, place the Pressure Switch selector switch to 4C.

With the DRBIII t, monitor the 4C Pressure Switch state.

While monitoring the DRBIII t press the Pressure Switch Test button on the

Transmission Simulator while wiggling the wiring pertaining to the 4C Pressure

Switch.

Did the 4C Pressure Switch state change to closed and remain closed while wiggling the wires?

Yes

→ Go To 12

No

→ Go To 14

5-SPD AUTO-

MATIC 5-45RFE

TRANS

161

TRANSMISSION


Continued

TEST

12

13

ACTION

Remove and inspect Transmission Oil Pan per Service Information.


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes




TEST - VER 1.

No

→ Go To 13


5-SPD AUTO-

MATIC 5-45RFE

TRANS

14

15

Repair




TEST - VER 1.



Disconnect the Transmission Solenoid /TRS harness connector


Measure the resistance of the 4C Pressure Switch Sense circuit between the TCM harness connector to the Solenoid/TRS harness connector.


Yes



TEST - VER 1.

No

→ Go To 15










Output circuit in the TCM harness connector.



Yes

→ Go To 16

No



TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

162

TRANSMISSION


Continued

TEST

16

17

18

19

ACTION







Yes



TEST - VER 1.

No

→ Go To 17

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS











Yes



TEST - VER 1.

No

→ Go To 18


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.





Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

163

TRANSMISSION

Symptom:





Set Condition: This DTC is set if the 4C pressure switch is in the wrong state for the current gear. For example, this code would be set if the 4C pressure switch came on while the transmission was in second gear.

POSSIBLE CAUSES







4C PRESSURE SWITCH


TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

164

TRANSMISSION


Continued

TEST

2

3

4

5

6

ACTION



Yes


Relay related DTCs.


TEST - VER 1.

No

→ Go To 3

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS




Is the STARTS SINCE SET counter for P0988, 2 or less?

Yes

→ Go To 4

No

→ Go To 11







With the Transmission Simulator turn the Pressure Switch selector switch to 4C.

With the DRBIII t, monitor the 4C Pressure Switch state while pressing the Pressure

Switch Test button.

Did the state of the 4C Pressure Switch change while pressing the Pressure Switch

Test button?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information.


TEST - VER 1.







Yes



TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

165

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION








Yes

→ Go To 8

No



TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS







Yes



TEST - VER 1.

No

→ Go To 9











Yes



TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

166

TRANSMISSION


Continued

TEST

11

ACTION




Sump filter installed incorrectly.



Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

167

TRANSMISSION

Symptom:

P1684-BATTERY WAS DISCONNECTED


P1684-BATTERY WAS DISCONNECTED

When Monitored: Whenever the key is in the Run/Start position.

Set Condition: This code is set whenever Transmission Control Module - TCM is disconnected from battery power B+ or ground. It will also be set during the DRBIII t

Battery Disconnect procedure.

POSSIBLE CAUSES

BATTERY WAS DISCONNECTED

DRBIII t BATTERY DISCONNECT PERFORMED

QUICK LEARN WAS PERFORMED

TCM WAS REPLACED OR DISCONNECTED


TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2

This DTC is an informational DTC only.

This DTC is set due to a momentary loss of the Fused B(+) feed to the TCM.

Continue to view the possible causes for this DTC.

Continue

Go To 3

5-SPD AUTO-

MATIC 5-45RFE

TRANS

168

TRANSMISSION

P1684-BATTERY WAS DISCONNECTED —

Continued

TEST

3

4

5

ACTION

Has the battery been disconnected, lost it’s charge, or been replaced recently?

Yes

→ This is the cause of the DTC. Erase the DTC and return the vehicle to customer.


TEST - VER 1.

No

→ Go To 5

Has a

9QUICK LEARN9 been performed with the DRBIIIt?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ This is the cause of the DTC. Erase the DTC and return vehicle to customer.


TEST - VER 1.

No

→ Go To 4

Has a DRBIII t Battery Disconnect procedure been performed?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

6

Yes

→ This is the cause of the DTC. Erase the DTC and return the vehicle to customer.


TEST - VER 1.

No

→ Go To 6

Has the TCM been replaced or disconnected?

5-SPD AUTO-

MATIC 5-45RFE

TRANS

7

Yes

→ Replacing or disconnecting the TCM will set this DTC. Erase the

DTC and return the vehicle to the customer.


TEST - VER 1.

No

→ Go To 7



NOTE: Check all power and ground circuits to the TCM for intermittent or high resistance circuits.


Check for any TSB’s or controller flash updates that may apply.


Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

169

TRANSMISSION

Symptom:

P1694-BUS COMMUNICATION WITH ENGINE MODULE


P1694-BUS COMMUNICATION WITH ENGINE MODULE

When Monitored: Continuously with ignition key on.

Set Condition: If no bus messages are received from the Powertrain Control Module

(PCM) for 10 seconds. Note: Some after market equipment will also set this DTC. example: remote starters and communication equipment.

POSSIBLE CAUSES

OTHER BUS PROBLEMS PRESENT


PCI BUS CIRCUIT OPEN

TCM - BUS PROBLEM

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2



Is the STARTS SINCE SET counter equal to zero?

Yes

→ Go To 3

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

170

TRANSMISSION

P1694-BUS COMMUNICATION WITH ENGINE MODULE —

Continued

TEST

3

4

5

6

ACTION

With the DRBIII t, attempt to communicate with other modules on the vehicle, check for evidence of a vehicle bus problem.

Bus related DTC’s in other modules point to an overall vehicle bus problem. Other symptoms such as a customer complaint of intermittent operation of bus controlled features also indicate a bus problem.

Does the PRNDL display indicate

9No Bus9 or is there any evidence of an overall vehicle bus problem?

Yes

→ Refer to the Communication Category and perform the appropriate symptom.


TEST - VER 1.

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Disconnect the PCM harness connectors.


Measure the resistance of the PCI Bus circuit from the PCM harness connector to the

Data Link Connector.

NOTE: CAREFULLY PROBE THE DLC. DAMAGE TO THE DLC TERMI-

NALS WILL RESULT IN POOR TERMINAL TO PIN CONNECTION.


Yes

→ Repair the open PCI Bus circuit between the PCM and the Data

Link Connector.


TEST - VER 1.

No

→ Go To 5


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair




TEST - VER 1.




Yes

→ Repair as necessary. Note: Some after market equipment will set this DTC.


TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

171

TRANSMISSION

Symptom:

P1715-RESTRICTED PORT IN T3 RANGE


P1715-RESTRICTED PORT IN T3 RANGE

When Monitored: Whenever the PRNDL code indicates Temp3.

Set Condition: This code sets whenever the conditions for a code P1776 (47) are satisfied with the shifter in the temp3 zone. This causes a restricted port.

POSSIBLE CAUSES

RELATED TRANSMISSION DTC’S PRESENT

CUSTOMER DRIVING HABITS

MISADJUSTED SHIFTER

TEST

1

2

3

ACTION


Are any of the following DTC’s P0731, P0732, P0733, P0734, P1736 or P0715 present?

Yes

→ Refer to the Transmission category and perform the appropriate symptom.


TEST - VER 1.

No

→ Go To 2

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Check Shifter adjustment per the Service Information. Adjust if necessary.

Did the shifter need to be adjusted?.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Adjust the shift linkage per the Service Information.


TEST - VER 1.

No

→ Go To 3

This DTC can be set if the customer rests his or her hand on the shift lever while they are driving. The transmission can be put in the T3 position if just enough forward pressure is exerted on the shift lever.

When this occurs, the feed port to the clutch is restricted, the transmission will declare neutral, and this DTC will be set. The customer should be informed not to rest his or her hand on the shifter while driving.

This DTC can also be set by simply bumping the shift lever toward neutral while accelerating.


Repair

This DTC can be set by putting too much forward pressure on the shift lever while it is in the OD position. Make sure the customer is informed.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

172

TRANSMISSION

Symptom:

P1736-GEAR RATIO ERROR IN 2ND PRIME


P1736-GEAR RATIO ERROR IN 2ND PRIME



POSSIBLE CAUSES



TRANSMISSION INTERNAL - GEAR RATIO ERROR 2ND PRIME

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

173

TRANSMISSION

P1736-GEAR RATIO ERROR IN 2ND PRIME —

Continued

TEST

2

3

4

5

ACTION


Are any of the DTC’s P0944, P0715, P0720, P1794, P0867, P0932, P0868, or P0869 also present?

Yes

→ If any of these DTCs are present, they will cause a speed ratio error. Refer to appropriate symptom in the Transmission category.

Perform the test for P0944 first if it is present.


TEST - VER 1.

No

→ Go To 3

With the DRBIII t, perform the 2nd prime Gear Clutch Test. Follow the instructions on the DRBIII t.

Increase the throttle angle, TPS Degree, to 30° for no more than a few seconds.


Did the clutch test pass, Input Speed remain at zero?

Yes

→ Go To 4

No

→ Go To 5

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Check the Speed Sensor wiring and connectors for good connection, then perform a wiggle test using the Transmission Simulator, Miller tool # 8333.

Gear ratio DTC’s can also be set under extreme temperature conditions, this is usually caused by an internal problem. Verify if the problem is only experienced under extreme hot or cold conditions.


Repair

Repair as necessary. If a internal problem is present, refer to the

Service information for the proper internal repair procedure.


TEST - VER 1.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair or replace transmission as necessary. If the transmission is to be repaired, and there were any line pressure DTC’s present along with this DTC, make sure to inspect the pump and Pressure



TEST - VER 1.

174

TRANSMISSION

Symptom:

P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION


P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION

When Monitored: During an attempted shift into 1st gear.

Set Condition: This code is set if three unsuccessful attempts are made to get into 1st gear in one given key start. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES



LR PRESSURE SWITCH SENSE CIRCUIT OPEN


LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND

LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE

INTERNAL TRANSMISSION - SOLENOID SWITCH VALVE STUCK

TCM - LR PRESSURE SWITCH

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

175

TRANSMISSION

P1775-SOLENOID SWITCH VALVE LATCHED IN TCC POSITION —

Continued

TEST

2

ACTION



APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to symptom list and perform test for P0841.


TEST - VER 1.

No

→ Go To 3

3 5-SPD AUTO-

MATIC 5-45RFE

TRANS

4

5




Is the STARTS SINCE SET counter for P1775 at 2 or less?

Yes

→ Go To 4

No

→ Go To 11







With the Transmission Simulator, turn the Pressure Switch selector switch to LR.

With the DRBIII t, monitor the LR Pressure Switch state while pressing the Pressure

Switch Test button on the Transmission Simulator.

Did the state of the UD Pressure Switch change while pressing the Pressure Switch

Test button?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission as necessary. Inspect the Solenoid

Switch Valve per the Service Information and repair or replace as necessary. If no problems are found, replace the Transmission



TEST - VER 1.

6 Turn the ignition off to the lock position.




Measure the resistance of the LR Pressure Switch Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the LR Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

176

TRANSMISSION


Continued

TEST

7

ACTION







Yes

→ Go To 8

No

→ Repair the Transmission Control Relay Output circuit for an open or high resistance. If the fuse is open make sure to check for a short to ground.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

8 5-SPD AUTO-

MATIC 5-45RFE

TRANS

9

10





Measure the resistance between ground and the LR Pressure Switch Sense circuit.


Yes

→ Repair the LR Pressure Switch Sense circuit short to ground.


TEST - VER 1.

No

→ Go To 9








Measure the voltage of the LR Pressure Switch Sense circuit in the TCM harness connector.


Yes

→ Repair the LR Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

177

TRANSMISSION


Continued

TEST

11

ACTION



This DTC can also be set by the SSV intermittently sticking in it’s bore under extreme temperature conditions.


Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

178

TRANSMISSION

Symptom:

P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION


P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION

When Monitored: Continuously when doing partial or full EMCC - PEMCC or FEMCC.

Set Condition: If the transmission senses the L/R pressure switch closing while performing PEMCC or FEMCC. This code will be set after two unsuccessful attempts to perform

PEMCC or FEMCC. This DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES




LR PRESSURE SWITCH SENSE CIRCUIT OPEN

LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND

LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE

INTERNAL TRANSMISSION - SOLENOID SWITCH VALVE STUCK

TCM - LR PRESSURE SWITCH

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

179

TRANSMISSION

P1776-SOLENOID SWITCH VALVE LATCHED IN LR POSITION —

Continued

TEST

2

ACTION



APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ Refer to symptom list and perform the appropriate test for DTC

P1784.


TEST - VER 1.

No

→ Go To 3

3 5-SPD AUTO-

MATIC 5-45RFE

TRANS

4





Yes

→ Go To 4

No

→ Go To 11







With the Transmission Simulator, turn the Pressure Switch selector switch to LR.

With the DRBIII t, monitor the LR Pressure Switch state while pressing the Pressure

Switch Test button on the Transmission Simulator.

Did the state of the LR Pressure Switch change while pressing the Pressure Switch

Test button?

Yes

→ Go To 5

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5 If there are no possible causes remaining, view repair.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission problem as necessary. Inspect the

Solenoid Switch Valve per the Service Information and repair or replace as necessary. If no problems are found, replace the

Solenoid/TRS Assembly per the Service Information.


TEST - VER 1.

180

TRANSMISSION


Continued

TEST

6

ACTION





Measure the resistance of the LR Pressure Switch Sense circuit from the TCM harness connector to the Solenoid/TRS Assembly harness connector.


Yes

→ Repair the LR Pressure Switch Sense circuit for an open.


TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

7 5-SPD AUTO-

MATIC 5-45RFE

TRANS

8

9





Measure the resistance between ground and the LR Pressure Switch Sense circuit.


Yes

→ Repair the LR Pressure Switch Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 8





Connect a jumper wire between the Fused B+ circuit and Transmission Control Relay






Yes

→ Repair the LR Pressure Switch Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 9








Yes

→ Go To 10

No

→ Repair the Transmission Control Relay Output circuit for an open or high resistance. If the fuse is open make sure to check for a short to ground.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

181

TRANSMISSION


Continued

TEST

10

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

11 The conditions necessary to set this DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.


This DTC can also be set by the Solenoid Switch Valve intermittently sticking in it’s bore under extreme temperature conditions.


Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

182

TRANSMISSION

Symptom:

P1790-FAULT IMMEDIATELY AFTER SHIFT


P1790-FAULT IMMEDIATELY AFTER SHIFT

When Monitored: After a speed ratio error is stored.

Set Condition: This code is set if the associated speed ratio code is stored within 1.3

seconds after a shift.

POSSIBLE CAUSES

FAULT AFTER SHIFT

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2

This DTC is set along with a speed ratio DTC. Perform the appropriate test for the

Speed Ratio DTC stored.

Check 1 trip failures if there are no speed ratio codes current.


Repair

This code is set if an associated speed ratio code is stored within

1.3 seconds after a shift. Perform the appropriate speed ratio DTC test.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

183

TRANSMISSION

Symptom:

P1793-TRD LINK COMMUNICATION ERROR


P1793-TRD LINK COMMUNICATION ERROR

When Monitored: During torque managed shifts with Throttle angle above 54 degrees.

This system is also tested whenever the vehicle is stopped and the engine speed is below

1000 RPM.

Set Condition: This code is set when the Transmission Control Module sends two subsequent Torque Reduction messages (pulses the TRD ckt to ground) to the Powertrain

Control Module via the TRD link circuit and the TCM does not receive a confirmation from the PCM over the communication bus.

POSSIBLE CAUSES



TORQUE MANAGEMENT REQUEST SENSE CIRCUIT OPEN

TORQUE MANAGEMENT REQUEST SENSE CIRCUIT SHORT TO GROUND

TORQUE MANAGEMENT REQUEST SENSE CIRCUIT SHORTED TO VOLTAGE

PCM - TRD LINK COMMUNICATION ERROR

TCM - TRD LINK COMMUNICATION ERROR

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

184

TRANSMISSION

P1793-TRD LINK COMMUNICATION ERROR —

Continued

TEST

2

3

4

5

ACTION


Are any of the DTCs P1694, P0731, P0732, P0733, P0734, or P1736 present also?

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Yes

→ If any of these DTCs are present, disregard the P1793 DTC. Refer to the symptom list and perform the diagnostics for the other

DTC’s first.


TEST - VER 1.

No

→ Go To 3



Is the STARTS SINCE SET equal to zero?

Yes

→ Go To 4

No

→ Go To 9



Disconnect the PCM harness connector(s).


Measure the resistance of the Torque Management Request Sense circuit from the

TCM harness connector to the PCM harness connector.


Yes

→ Repair the open Torque Management Request Sense circuit.


TEST - VER 1.

No

→ Go To 5



Disconnect the PCM harness connector.


Measure the resistance between ground and the Torque Management Request Sense circuit.


Yes

→ Repair the Torque Management Request Sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

185

TRANSMISSION

P1793-TRD LINK COMMUNICATION ERROR —

Continued

TEST

6

7

8

9

ACTION





Measure the voltage of the Torque Management Request Sense circuit in the TCM harness connector.


Yes

→ Repair the Torque Management Request Sense circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Turn the ignition switch to the lock position.



Turn the ignition on.

Measure the voltage of the Torque Management Request Sense circuit in the TCM connector.


Yes

→ Replace the Transmission Control Module. WITH THE DRBIIIt

PERFORM QUICK LEARN


TEST - VER 1.

No

→ Go To 8


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Powertrain Control Module.






Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

186

TRANSMISSION

Symptom:

P1794-SPEED SENSOR GROUND ERROR


P1794-SPEED SENSOR GROUND ERROR

When Monitored: The gear ratio is monitored continuously while the Transmission is in gear.

Set Condition: After a TCM reset in neutral and a ratio of input to output, of 1 to 2. This

DTC can take up to five minutes of problem identification before illuminating the MIL.

POSSIBLE CAUSES





TCM - SPEED SENSOR GROUND CIRCUIT

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2

Engine Running. Shift lever in park.

With the DRBIII t, read the Transmission Output and Input Speed Sensor states.

Is the Output Speed Sensor reading twice the Input Speed Sensor reading?

Yes

→ Go To 3

No

→ Go To 8

5-SPD AUTO-

MATIC 5-45RFE

TRANS

187

TRANSMISSION

P1794-SPEED SENSOR GROUND ERROR —

Continued

TEST

3

4

5

6

ACTION




Install Transmission Simulator Miller tool 8333.



With the Transmission Simulator, set the Input/Output Speed selector switch to the

93000/10009 position. Turn the Input/Output Speed switch to 9ON9.

With the DRBIII t, monitor the Input and Output Speed Sensor state.

Does the input speed read 3000 RPM and the Output speed read 1000 RPM, within

50 RPM?

Yes

→ Go To 8

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Disconnect the Input and Output Speed Sensor harness connector.



Measure the resistance of the Speed Sensor Ground circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly, Input, and Output Speed

Sensor harness connectors.

Is the resistance above 5.0 ohms on any of the above measurements?

Yes



TEST - VER 1.

No

→ Go To 5




Disconnect the Input and Output Speed Sensor harness connectors.


Measure the resistance between the Input Sensor Ground circuit and ground.


Yes

→ Repair the Speed Senor Ground circuit for a short to ground.


TEST - VER 1.

No

→ Go To 6


Disconnect the Input and Output Speed Sensors.



Measure the voltage of the Speed Sensor Ground circuit.


Yes



TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

188

TRANSMISSION

P1794-SPEED SENSOR GROUND ERROR —

Continued

TEST

7

8

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.





Yes



TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

189

TRANSMISSION

Symptom:

P1799-CALCULATED OIL TEMP IN USE


P1799-CALCULATED OIL TEMP IN USE


Set Condition: The DTC will set if any of the three conditions are present. Thermistor voltage (Transmission Temperature Sensor) out of range. Continuous erratic thermistor voltage is sensed. Thermistor Temperature stays low for an extended period of time.

POSSIBLE CAUSES



TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN

TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND


TRANSMISSION TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

TRANSMISSION TEMPERATURE SENSOR - INOPERATIVE

TCM - CALCULATED OIL TEMP IN USE

TCM - TRANSMISSION TEMPERATURE SENSOR HIGH

TCM - TRANSMISSION TEMPERATURE SENSOR LOW

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

190

TRANSMISSION

P1799-CALCULATED OIL TEMP IN USE —

Continued

TEST

2

3

4

ACTION


Note: This counter only applies to the last code set.


Yes

→ Go To 3

No

→ Go To 12



NOTE: Failure to remove Starter Relay can cause a TCM - No Response condition.




With the Transmission Simulator, turn the Input/Output switch to OFF.

With the DRBIII t, monitor the TRANS TEMP VOLTS while turning the Thermistor

Voltage switch to all three positions on the Transmission Simulator.

Compare the DRBIII t readings with the numbers listed on the Transmission

Simulator.

Pick one of the following that best matches your readings.

DRBIII t readings always high.

Go To 4

DRBIII t readings = simulator +/- 0.25 V

Go To 9

DRBIII t readings always low

Go To 10

DRBIII t readings erratic.

Go To 12

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance of the Speed Sensor Ground circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes



TEST - VER 1.

No

→ Go To 5

5-SPD AUTO-

MATIC 5-45RFE

TRANS

191

TRANSMISSION


Continued

TEST

5

6

7

8

ACTION





Measure the resistance of the Transmission Temperature Sensor Signal circuit from the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the Transmission Temperature Sensor Signal circuit for an open.


TEST - VER 1.

No

→ Go To 6

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Disconnect the Input and Output Speed Sensors.



Measure the voltage of the Speed Sensor Ground circuit.


Yes



TEST - VER 1.

No

→ Go To 7








Measure the voltage of the Transmission Temperature Sensor Signal circuit in the



Yes

→ Repair the Transmission Temperature Sensor Signal circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 8


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

192

TRANSMISSION


Continued

TEST

9

10

11

12

13

ACTION


Repair

Replace Transmission Solenoid/TRS assembly as required.


TEST - VER 1.





Measure the resistance between ground and the Transmission Temperature Sensor

Signal circuit.


Yes

→ Repair the Transmission Temperature Sensor Signal circuit for a short to ground.


TEST - VER 1.

No

→ Go To 11


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.



Check for any applicable TSB’s that may apply.


Yes



TEST - VER 1.

No

→ Go To 13


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

193

TRANSMISSION

Symptom:

P2700-INADEQUATE ELEMENT VOLUME LR


P2700-INADEQUATE ELEMENT VOLUME LR

When Monitored: Whenever the engine is running. The LR volume is updated during a

3-1 or 2-1 manual downshift with throttle angle below 5 degrees. Trans temp must be at least 43 C (110 F)

Set Condition: When the LR volume falls below 16.

POSSIBLE CAUSES

INTERNAL TRANSMISSION - LR CLUTCH VOLUME INDEX LOW

TCM - LR CLUTCH VOLUME INDEX LOW

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2

With the DRBIII t, erase DTC9s

NOTE: The TRANS TEMP DEG must be at least 43°C or 110°F before performing the following steps.

Drive the vehicle and perform at least ten 3-1 manual downshifts at closed throttle from speeds of about 32 km/h or 20 MPH.

With the DRBIII t, read the LR CL VOL INDEX.

Is the LR CL VOL INDEX below 20?

Yes

→ Go To 3

No

→ Go To 4

5-SPD AUTO-

MATIC 5-45RFE

TRANS

194

TRANSMISSION

P2700-INADEQUATE ELEMENT VOLUME LR —

Continued

TEST

3

4

5

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair internal transmission as necessary. Refer to the Service

Information for the proper repair procedure for components related to the LR clutch. A broken or weak return spring or a dislocated snap ring could cause this problem.


TEST - VER 1.

NOTE: The TRANS TEMP DEG must be at least 43° C or 110° F before performing the following steps.

Perform eight learnable starts. A learnable start is defined as follows: Start engine.

From a standstill, accelerate lightly to 80 km/h or 50 MPH, then brake lightly to a stop. Turn off engine.

With the DRBIII t, record the CL VOL INDEX (CVI) for all clutches.

With the DRBIII t, perform a BATTERY DISCONNECT.

With the DRBIII t, read the CVI’s and compare them to the readings recorded before the BATTERY DISCONNECT.

Are any of the CVI’s less than 5 or different than before the BATTERY DISCON-

NECT?

Yes

→ Go To 5

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

195

TRANSMISSION

Symptom:

P2701-INADEQUATE ELEMENT VOLUME 2C



When Monitored: Whenever the engine is running. The 2C volume is updated during a

3-2 kickdown with throttle angle between 10 and 54 degrees. Trans temp must be at least

43 C (110 F)

Set Condition: When the 2C volume falls below 5.

POSSIBLE CAUSES

INTERNAL TRANSMISSION - 2C CLUTCH VOLUME INDEX LOW

TCM - 2C CLUTCH VOLUME INDEX LOW

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

196

TRANSMISSION

P2701-INADEQUATE ELEMENT VOLUME 2C —

Continued

TEST

2

3

4

5

ACTION


Drive the vehicle at about 80 km/h or 50 MPH, then depress the OD off button. This will put the vehicle into third gear.


Perform at least ten 3-2 kickdowns by depressing the throttle between 10 and 54 TPS

DEGREES at speeds of about 80 km/h or 50 MPH.

With the DRBIII t, read the 2C CL VOL INDEX.

Is the 2C CL VOL INDEX below 10?

Yes

→ Go To 3

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information for the proper repair procedure for components related to the 2C clutch. A broken or weak return spring or a dislocated snap ring could cause this problem.


TEST - VER 1.




With the DRBIII t, record the CL VOL INDEX (CVI) for all clutches




NECT?

Yes

→ Go To 5

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

197

TRANSMISSION

Symptom:

P2702-INADEQUATE ELEMENT VOLUME OD


P2702-INADEQUATE ELEMENT VOLUME OD

When Monitored: Whenever the engine is running. The OD volume is updated during a

2-3 upshift with throttle angle between 10 and 54 degrees. Trans temp must be at least 43

C (110 F)

Set Condition: When the OD volume falls below 5.

POSSIBLE CAUSES

INTERNAL TRANSMISSION - O/D CLUTCH VOLUME INDEX LOW

TCM- OD CLUTCH VOLUME INDEX LOW

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2



Drive the vehicle and perform at least ten 2-3 upshifts with the throttle between 10 and 54 TPS DEGREES.

With the DRBIII t, read the OD CL VOL INDEX.

Is the OD CL VOL INDEX below 10?

Yes

→ Go To 3

No

→ Go To 4

5-SPD AUTO-

MATIC 5-45RFE

TRANS

198

TRANSMISSION

P2702-INADEQUATE ELEMENT VOLUME OD —

Continued

TEST

3

4

5

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information for the proper repair procedure for components related to the OD clutch. A broken or weak return spring or a dislocated snap ring could cause this problem.


TEST - VER 1.




With the DRBIII t, record the CL VOL INDEX (CVI) for all clutches.




NECT?

Yes

→ Go To 5

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

199

TRANSMISSION

Symptom:

P2703- INADEQUATE ELEMENT VOLUME UD


P2703- INADEQUATE ELEMENT VOLUME UD

When Monitored: Whenever the engine is running. The UD volume is updated during a

4-3 kickdown with throttle angle between 10 and 54 degrees. Trans temp must be at least

43 C (110 F)

Set Condition: When the UD volume falls below 11.

POSSIBLE CAUSES

INTERNAL TRANSMISSION - UD CLUTCH VOLUME INDEX LOW

TCM- UD CLUTCH VOLUME INDEX LOW

TEST

1

2

ACTION














APPLICABILITY

All

Continue

Go To 2



Drive the vehicle and perform at least ten 4-3 kickdowns by depressing the throttle between 30 and 54 TPS DEGREES at speeds about 80 km/h or 50 MPH.

With the DRBIII t, read the UD CL VOL INDEX.

Is the UD CL VOL INDEX below 10?

Yes

→ Go To 3

No

→ Go To 4

5-SPD AUTO-

MATIC 5-45RFE

TRANS

200

TRANSMISSION

P2703- INADEQUATE ELEMENT VOLUME UD —

Continued

TEST

3

4

5

ACTION


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Information for the proper repair procedure for components related to the UD clutch. A broken or weak return spring or a dislocated snap ring could cause this problem.


TEST - VER 1.




With the DRBIII t, record CL VOL INDEX (CVI) for all clutches.




NECT?

Yes

→ Go To 5

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

201

TRANSMISSION

Symptom:




When Monitored: Whenever the engine is running. The 4C volume is updated during a

3-4 upshift with throttle angle between 10 and 54 degrees. Trans temp must be at least 43

C (110 F)

Set Condition: When the 4C volume falls below 5.

POSSIBLE CAUSES

INTERNAL TRANSMISSION - 4C CLUTCH VOLUME LOW

TCM- 4C VOLUME LOW

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

202

TRANSMISSION

P2704-INADEQUATE ELEMENT VOLUME 4C —

Continued

TEST

2

3

4

5

ACTION

NOTE: Check the Transmission Fluid Level. If the Transmission Fluid is low, repair any Transmission Fluid leak as necessary and adjust the Transmission Fluid Level per the Service Information.

With the DRBIII t, record the 4C CL VOL INDEX.

With the DRBIII t, erase DTC’s.

Perform at least 10 3-4 upshifts with the throttle between 10 and 54 degrees. The

Transmission Temperature must be at least 43°C or 110 °F.

With the DRBIII t, read the 4C CL VOL INDEX.

Is the current 4C CL VOL INDEX below 10?

Yes

→ Go To 3

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Repair or replace the transmission as necessary per the Service

Information. Pay special attention to the mechanical components related to the 4th clutch. A deteriorated return spring or a dislocated snap ring could cause this problem.


TEST - VER 1.


From a standstill, accelerate lightly to 50 MPH, then brake lightly to a stop. Turn off engine.

With the DRBIII t, observe and record CVI’s.

With the DRBIII t, perform a battery disconnect.

With the DRBIII t, Observe CVI’s

Are any of the CVI’s less than 5 or are they different than before the battery disconnect?

Yes

→ Go To 5

No

→ Test Complete.


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

203

TRANSMISSION

Symptom:

P2706-MS SOLENOID CIRCUIT


P2706-MS SOLENOID CIRCUIT



POSSIBLE CAUSES



MS SOLENOID CONTROL CIRCUIT OPEN


MS SOLENOID CONTROL CIRCUIT SHORT TO GROUND

MS SOLENOID CIRCUIT SHORT TO VOLTAGE

MS SOLENOID INOPERATIVE

TCM - MS SOLENOID CIRCUIT

TEST

1

ACTION














APPLICABILITY

All

Continue

Go To 2

204

TRANSMISSION

P2706-MS SOLENOID CIRCUIT —

Continued

TEST

2

3

4

5

6

ACTION


Are there any Transmission Control Relay related DTCs P0890, P0891, and/or P0888 present?

Yes


Relay related DTCs.


TEST - VER 1.

No

→ Go To 3




Yes

→ Go To 4

No

→ Go To 11

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS






Ignition on, engine not running..

With the DRBIII t, actuate the MS Solenoid.

Monitor the MS Solenoid LED on the Transmission Simulator.

Did the LED on the Transmission Simulator blink on and off?

Yes

→ Go To 5

No

→ Go To 6


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair



TEST - VER 1.





Measure the resistance of the MS Solenoid Control circuit between the TCM harness connector to the Transmission Solenoid/TRS Assembly harness connector.


Yes

→ Repair the MS Solenoid Control circuit for an open.


TEST - VER 1.

No

→ Go To 7

5-SPD AUTO-

MATIC 5-45RFE

TRANS

205

TRANSMISSION


Continued

TEST

7

8

9

10

ACTION





Output circuit in the Solenoid/TRS harness connector.



Yes

→ Go To 8

No



TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS





Measure the resistance between ground and the MS Solenoid Control circuit.


Yes

→ Repair the MS Solenoid Control circuit for a short to ground.


TEST - VER 1.

No

→ Go To 9









Measure the voltage of the MS Solenoid Control circuit in the TCM harness connector.


Yes

→ Repair the MS Solenoid Control circuit for a short to voltage.


TEST - VER 1.

No

→ Go To 10


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


PERFORM QUICK LEARN


TEST - VER 1.

206

TRANSMISSION


Continued

TEST

11

ACTION



Check for any applicable TSB that may apply.

Wiggle the wires while checking for shorts or open circuits.


Yes



TEST - VER 1.

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

207

TRANSMISSION

Symptom:

*BACKUP LAMPS COME ON WHILE SHIFTER IS NOT IN REVERSE

POSITION

POSSIBLE CAUSES

BACKUP SUPPLY CIRCUIT SHORT TO VOLTAGE


TEST

1

2

3

4

ACTION



Place the Shift Lever in the position which causes the Backup Lamps to come on at the wrong time.

Do the Backup Lamps come while the shifter is not in Reverse?

Yes

→ Go To 2

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Place the shift lever in a position that causes the Backup Lamps to come on when they should not.


NOTE: This will cause a DTC to be stored in the TCM. They must be erased before returning the vehicle to the customer.

Did the Backup Lamps go out when the connector was disconnected?

Yes

→ Go To 3

No

→ Go To 4


5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair



TEST - VER 1.




Measure the voltage of the Backup Light Supply circuit in the Solenoid/TRS harness connector.


Yes

→ Repair the Backup Lights Supply circuit for a short to voltage.


TEST - VER 1.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

208

TRANSMISSION

Symptom:

*BACKUP LAMPS INOPERATIVE

POSSIBLE CAUSES

BACK UP LAMP GROUND CIRCUIT OPEN

BACKUP LAMP SUPPLY CIRCUIT OPEN

FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN

BACKUP LAMP SUPPLY CIRCUIT SHORT TO GROUND

OPEN BACKUP LAMP BULBS


TEST

1

2

3

4

5

ACTION


Place foot firmly on brake pedal.

Place the shift lever in the reverse position.

Do either of the Backup Lamps work?

Yes

→ Test Complete.

No

→ Go To 2




Press the Reverse Light Test button on the Transmission Simulator while observing the Backup Lamps.

Do either of the Backup Lamps come on?

Yes

→ Go To 3

No

→ Go To 4

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair


Remove the Backup Lamp bulb.

Using a 12-volt test light connected to 12-volts, check the Backup Lamp ground circuit.

Does the light illuminate brightly?

Yes

→ Go To 5

No

→ Repair the bad ground circuit to the Back up Lamp bulb socket.

Remove both Backup Lamp bulbs.

Measure the resistance of both Backup Lamp bulbs.

Is the resistance above 5.0 ohms for either Backup Lamp bulbs?

Yes

→ Replace the Backup Lamp bulb or bulbs as required.

No

→ Go To 6

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

209

TRANSMISSION

*BACKUP LAMPS INOPERATIVE —

Continued

TEST

6

7

8

ACTION




Measure the resistance of the Backup Lamp Supply circuit from the Backup lamp

Socket to the Solenoid/TRS connector.


Yes

→ Repair the Backup Lamp circuit for an open.

No

→ Go To 7

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


Disconnect the Transmission Solenoid /TRS harness connector.



Output circuit.

Does the light illuminate brightly?

Yes

→ Go To 8

No

→ Repair the Fused Ignition Switch Output circuit for an open.

Check fuse and replace, if necessary repair cause of open fuse.

Possible short to ground or excessive resistance.

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Disconnect the Transmission Solenoid/TRS connector.

Measure the resistance between the Backup Lamp Supply circuit and ground.


Yes

→ Repair the Backup Supply Lamp circuit for a short to ground..

Check fuse and replace if necessary.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

210

TRANSMISSION

Symptom:

*BUMP FELT SHORTLY AFTER STOP WITH NO DTC’S PRESENT

POSSIBLE CAUSES

STICKING SLIP JOINT

TEST

1

ACTION

This condition is normally caused by a stick and slip condition between the prop shaft slip joint and the transfer case output shaft.


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Check for TSB’s relating to this condition.

211

TRANSMISSION

Symptom:

*BUMP FELT WHILE COASTING IN NEUTRAL WITH NO DTC’S

PRESENT

TEST

1

ACTION

Check for a TCM flash update or TSB to address this issue.

Perform the drive learn procedure for the LR clutch element.

NOTE: Some bump while coasting in neutral is normal.

Perform the above procedures to reduce excessive bump in neutral.

Repair

Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

212

TRANSMISSION

Symptom:

*CHECKING PARK/NEUTRAL SWITCH OPERATION

POSSIBLE CAUSES


PARK/NEUTRAL SWITCH SENSE CIRCUIT OPEN

PARK/NEUTRAL SWITCH SENSE CIRCUIT SHORT TO GROUND

PARK/NEUTRAL POSITION SWITCH

POWERTRAIN CONTROL MODULE - PARK NEUTRAL SWITCH

TEST

1

2

3

4

ACTION


With the DRBIII t, monitor the PNP Switch Input status.

Move the gear selector through all gear positions, Park to 1st and back to Park.

Did the DRB display P/N and D/R in the correct gear positions?

Yes

→ Go To 2

No

→ Go To 3

The condition is not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Wiggle the wires while checking for shorts and open circuits.


Yes



TEST - VER 1.

No

→ Test Complete.



Disconnect the PNP Switch harness connector.

Check connectors - Clean/repair as necessary

Measure the resistance of the PNP Switch Sense circuit between the PCM harness connector and the PNP Switch harness connector.


Yes

→ Go To 4

No

→ Repair the PNP switch sense circuit for an open.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS



Disconnect the PNP Switch harness connector.

Check connectors - Clean/repair as necessary

Measure the resistance between the PNP Switch Sense Circuit and ground.


Yes

→ Repair the PNP switch sense circuit for a short to ground.


TEST - VER 1.

No

→ Go To 5

5-SPD AUTO-

MATIC 5-45RFE

TRANS

213

TRANSMISSION

*CHECKING PARK/NEUTRAL SWITCH OPERATION —

Continued

TEST

5

6

ACTION



Check connectors - Clean/repair as necessary

Move the gear selector through all gear positions, from Park to 1st and back.

While moving the gear selector through the gear positions, measure the resistance between ground and the PNP Switch Sense circuit in the PCM harness connector.

Did the display change from above 10.0 ohms to below 10.0 ohms?

Yes

→ Go To 6

No

→ Replace the Park/Neutral Position Switch in accordance with the



TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS


5-SPD AUTO-

MATIC 5-45RFE

TRANS

Repair

Replace the Powertrain Control Module.


TEST - VER 1.

214

TRANSMISSION

Symptom:

*POOR SHIFT QUALITY

POSSIBLE CAUSES

POOR SHIFT QUALITY

TEST

1 Check the transmission fluid level per the service information.

Is the fluid level ok?

ACTION

Yes

→ Test Complete.

No

→ Correct the fluid level as necessary. Check and repair all leaks in the transmission if the fluid level is low. Note: This is one possible cause of poor shift quality.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

215

TRANSMISSION

Symptom:

*TRANSMISSION NOISY WITH NO DTC’S PRESENT

POSSIBLE CAUSES

INCORRECT FLUID LEVEL

INTERNAL TRANSMISSION PROBLEM - NOISY WHILE DRIVING

INTERNAL TRANSMISSION PROBLEM - NOISY WHILE STANDING STILL

TEST

1

2

3

4

ACTION

Check and adjust the oil level per the service information before continuing.

Place vehicle on hoist.

Run vehicle on hoist under conditions necessary to duplicate the noise.

Using Chassis Ears or other suitable device, verify that the noise is coming from the transmission.

Is the noise coming from the transmission?

Yes

→ Go To 2

No

→ Test Complete.

Check the transmission fluid level per the Service Information.

NOTE: The transmission must be hot when checking oil level. When the temperature is below 10° Celsius 50° Fahrenheit it is possible that no oil will show on the dipstick, even though the transmission has an adequate fill level when warm.

Is the fluid level OK?

Yes

→ Go To 3

No

→ Adjust fluid level. Repair cause of incorrect fluid level.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

With the shift lever in neutral, raise the engine speed and listen to the noise.

Note: Make sure the radio is turned OFF. Alternator noise can come through the speakers and be misinterpreted as Transmission Pump Whine. This can happen even with the volume turned down, THE RADIO MUST BE TURNED

OFF.

Does the noise get louder or change pitch while the engine speed is changing?

Yes

→ Go To 4

No

→ Go To 5

The transmission has an internal problem and must be replaced or repaired.

If the transmission is to be repaired, inspect all of the transmission components for signs of wear. Pay particular attention to bearings in front half of transmission. If no problems found, replace oil pump..


Repair

Replace transmission or repair internal transmission problem as necessary.


TEST - VER 1.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

216

TRANSMISSION

*TRANSMISSION NOISY WITH NO DTC’S PRESENT —

Continued

TEST

5 View repair options.

ACTION

Repair

Repair internal transmission problem as necessary. If the transmission is to be repaired, inspect all of the transmission components for signs of wear. Pay particular attention to bearings, pinion gears, etc. Repair or replace as necessary.


TEST - VER 1.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

217

TRANSMISSION

Symptom:

*TRANSMISSION SHIFTS EARLY WITH NO DTC’S

POSSIBLE CAUSES

COLD TRANSMISSION

BUS PROBLEMS


TEST

1

2

3

ACTION

If the transmission shifts too early when the transmission is cold, this is a normal condition.

Did the problem occur when the transmission temperature was cold?

Yes

→ The software is designed to protect the transmission from high torque and/or high RPM shifts during cold operation.

No

→ Go To 2

Using the DRBIII t, attempt communication with other Modules, check for signs of a bus problem such as bus related DTC’s and/or communication problems.

Although it takes two occurences of a missed TRD link message to set the fault code, one missed message will cause the transmission to short shift until the next start up.

If the vehicle has any indications of a bus problem, the bus must be repaired first

Do any of the other modules show signs of a bus problem?

Yes

→ Refer to the appropriate category for the bus problem.

No

→ Go To 3

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Using the schematics as a guide, inspect the wiring and connectors specific to the

Torque Management Request Sense circuit. Wiggle the wires while checking for shorts and open circuits.




Yes

→ Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

No

→ Test Complete.

5-SPD AUTO-

MATIC 5-45RFE

TRANS

218

TRANSMISSION

Symptom:

*TRANSMISSION SHIFTS ROUGH AFTER TCM REPLACEMENT

OR REFLASH

POSSIBLE CAUSES

TRANSMISSION SHIFTS ROUGH AFTER TCM REPLACEMENT OR REFLASH

TEST

1

ACTION

Perform this procedure if the transmission shifts rough after TCM was replaced or

Reflashed.

Does the transmission shift rough after a TCM replacement or Reflash?

Yes

→ Perform Quick Learn and the Drive Learn Procedure

No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

219

TRANSMISSION

Symptom:

*TRANSMISSION SIMULATOR WILL NOT POWER UP

TEST

1

ACTION

Note: If the transmission simulator tool 8333 will not power up, this is a symptom of the transmission relay being open (such as Limp-in ) and/or this also could be a indication of the trans simulator not installed correctly on the vehicle.

Note: Check the simulator ground cable connection.

Repair these symptoms before having the transmission simulator 8333 repaired.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

Continue

Test Complete.

220

TRANSMISSION

Symptom:

*VEHICLE IS SLUGGISH WITH NO DTC’S PRESENT

POSSIBLE CAUSES

ENGINE VISCOUS FAN

COLD TRANSMISSION

BUS PROBLEMS


TEST

1

2

3

4

ACTION

NOTE: Engine viscous fan sticking can cause this complaint.

Check the engine viscous fan for proper operation per the service information.

Does the engine fan operate correctly?

Yes

→ Repair the engine viscous fan per the Service Information.

No

→ Go To 2

If the transmission shifts too early when the transmission is cold, this is a normal condition.

Did the problem occur when the transmission temperature was cold?

Yes

→ The software is designed to protect the transmission from high torque and/or high RPM shifts during cold operation.

No

→ Go To 3

With the DRBIII t, attempt communications with other Modules, check for signs of a bus problem such as bus related DTC’s and/or communication problems.



Do any of the other modules show signs of a bus problem?

Yes

→ Refer to the appropriate category for the bus problem.

No

→ Go To 4

Using the schematics as a guide, inspect the wiring and connectors specific to the

Torque Management Request Sense circuit. Wiggle the wires while checking for shorts and open circuits.




Yes


No

→ Test Complete.

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

5-SPD AUTO-

MATIC 5-45RFE

TRANS

221


Verification Tests

45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1

1. Connect the DRBIII t to the Data Link Connector.

2. Reconnect any disconnected components.

3. With the DRBIII t, erase DTC’s.

4. With the DRBIII t, display Transmission Temperature. Start and run the engine until the

Transmission Temperature is HOT above 43° Celsius 110° Fahrenheit.

5. Check the Transmission fluid and adjust if necessary. Refer to the Service Information for the

Fluid Fill procedure.

6. NOTE: If the TCM has been replaced or if the transmission has been repaired or replaced it is necessary to perform the DRBIII

t Quick Learn Procedure.

7. Road test the vehicle. With the DRBIII t, monitor TPS. Make fifteen to twenty 1-2, 2-3, and

3-4 upshifts and (4 - 4prime for 545RFE only).

8. Perform these shifts from a standing start to 97 Km/h 60 MPH with a constant throttle opening of 20 to 25 degrees.

9. Below 40 Km/h 25 MPH, make five to eight wide open throttle kickdowns to 1st gear. Allow at least 5 seconds each in 2nd and 3rd gear between each kickdown.

10. Check for DTC’s during the road test.

11. NOTE: Use the EATX OBDII task manager to run Good Trip time in each gear, this will confirm the repair and to ensure that the DTC has not re-matured.

Were any Trouble Codes set during the road test?

Yes

→ Refer to the Symptom List for the appropriate diagnostic tests.

No

→ Repair is complete.

APPLICABILITY

All

POWERTRAIN VERIFICATION TEST VER - 2

1. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary.

2. If this verification procedure is being performed after a NO TROUBLE CODE repair, perform steps 3 and 4.

3. Check to see if the initial symptom still exists. If there are no trouble codes or the symptom no longer exists, the repair was successful and testing is complete.

4. If the initial or another symptom exists, the repair is not complete. Check all technical service bulletins or flash updates and return to Symptoms if necessary.

5. If this verification procedure is being performed after a DTC repair, perform steps 6 through

13.

6. Connect the DRBIII t to the data link connector. Using the DRBIIIt erase any diagnostic trouble codes and reset all values.

7. If the PCM was not replaced, skip steps 8 through 10 and continue with the verification.

8. If the PCM was replaced the correct VIN and mileage must be programmed or a DTC will set in the ABS and Air Bag modules. In addition, if the vehicle is equipped with Sentry Key

Immobilizer System (SKIS), Secret Key data must be updated to enable start.

9. For ABS and Air Bag systems: Enter correct VIN and Mileage in PCM. Erase codes in ABS and Air Bag modules.

10. For SKIM theft alarm: Connect DRBIII t to data link conn. Go to Theft Alarm, SKIM, Misc.

and place SKIM in secured access mode, by using the appropriate PIN code for this vehicle.

Select Update the Secret Key data. Data will be transferred from SKIM to PCM

11. Road test the vehicle. If the test is for an A/C DTC, ensure it is operating during the following test.

12. Drive the vehicle for at least 5 minutes at or around 64 Kmh (40 mph). Ensure the transmission shifts through all gears. At some point stop the vehicle and turn off the engine for at least 10 seconds.

13. With the DRBIII t, read DTCs.

Are there any DTC(s) present?

Yes

→ Check for any related Technical Service Bulletins and/or refer to the appropriate Symptom list (Diagnostic Procedure).

No


APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

222


Verification Tests —

Continued

POWERTRAIN VERIFICATION TEST VER - 5

1. Inspect the vehicle to ensure that all engine components are properly installed and connected. Reassemble and reconnect components as necessary.

2. If any existing diagnostic trouble codes have not been repaired, go to the appropriate

Symptom List and follow path specified.

3. Connect the DRBIII t to the data link connector.

4. Ensure the fuel tank has at least a quarter tank of fuel. Turn off all accessories.

5. If the PCM was not replaced skip steps 6 through 8 and continue the verification.

6. If the PCM was replaced, the correct VIN and mileage must be programmed or a DTC will set in the ABS and Air Bag modules. In addition, if the vehicle is equipped with Sentry Key

Immobilizer Module (SKIM), Secret Key data must be updated to enable start.

7. For ABS and Air Bag systems: Enter correct VIN and Mileage in PCM. Erase codes in ABS and Air Bag modules.

8. For SKIM theft alarm: Connect DRBIII t to data link connectorto Theft Alarm, SKIM, Misc.

and place SKIM in secured access mode by using the appropriate PIN code for this vehicle.

Select Update the Secret Key data. Data will be transferred from SKIM to PCM.

9. If the Catalyst was replaced, with the DRBIII t go to the miscellaneous Menu Option

9Catalyst Replaced9 and press enter.

10. If a Comprehensive Component DTC was repaired, perform steps 11 and 13. If a Major

OBDII Monitor DTC was repaired skip step 11 and continue the verification.

11. After the ignition has been off for at least 10 seconds, restart the vehicle and run 2 minutes.

12. With the DRBIII t, monitor the appropriate pre-test enabling conditions until all conditions have been met. Once the conditions have been met, switch screen to the appropriate OBDII monitor, (Audible beeps when the monitor is running).

13. If the conditions cannot be duplicated, erase all DTCs with the DRBIII t.

Did the OBD II monitor run successfully and has the Good Trip Counter changed to one or more?

Yes


No

→ Check for any related Technical Service Bulletins and/or refer to the appropriate Symptoms list (Diagnostic Procedure).

APPLICABILITY

5-SPD AUTO-

MATIC 5-45RFE

TRANS

223

NOTES

224

8.0

COMPONENT LOCATIONS

8.1

CRANKSHAFT POSITION SENSOR


O

N

E

N

T

C

O

M

P

T

I

O

N

S

L

O

C

A

8.2

ELECTRONIC MODULE LOCATIONS

8.3

TRANSMISSION COMPONENT LOCATIONS

225

T

I

O

N

S

L

O

C

A

P

O

N

E

C

O

M

N

T


8.4

TRANSMISSION CONTROL MODULE

8.5

TRANSMISSION LINE PRESSURE SENSOR

226

CONNECTOR PINOUTS

9.0


CAV

1

2

3

4

5

6

9

10

7

8

ACCELERATOR PEDAL POSITION SENSOR (DIESEL) - BLACK 10 WAY

CIRCUIT FUNCTION

-

F855 18BR/YL

K22 14RD/DB

-

K225 18BK

K81 20DB/DG

-

K255 20WT/DG

-

Y43 20WT/VT

-

SENSOR REFERENCE VOLTAGE A

ACCELERATOR PEDAL POSITION SENSOR 2 SIGNAL

-

-

ACCELERATOR PEDAL POSITION SENSOR 2 GROUND



-

ACCELERATOR PEDAL POSITION SENSOR 1 5-VOLT SUPPLY

5

5

3

4

6

CAV

1

2

2

CIRCUIT

K29 18WT/PK

Z238 18BK (LHD)

Z243 18BK (RHD)

V32 22OR/DG (GAS)

V30 22DB/RD (GAS)

L50 20VT/TN (LHD)

L50 20WT/TN (RHD)

F32 20PK/DB

BRAKE LAMP SWITCH - GRAY 6 WAY

FUNCTION

SECONDARY BRAKE SWITCH SIGNAL

GROUND

GROUND

SPEED CONTROL POWER SUPPLY

SPEED CONTROL BRAKE SWITCH OUTPUT

PRIMARY BRAKE SWITCH SIGNAL


FUSED B(+)

C113 (DIESEL) - LT. GRAY (TRANSMISSION SIDE)

CAV CIRCUIT

1 D52 18LG/WT

2 D51 18DG/WT

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

C201 (DIESEL) - WHITE (SHIFTER ASSEMBLY SIDE)

CAV CIRCUIT

7

8

5

6

3

4

1

2

9

10

11

12

K2 20WT/PK

D25 20RD

D21 20PK

F12 20DB/WT

T2 20TN/BK

Z234 20WT

T41 20BK/WT

F991 20OR/DB

-

-

-

-

227

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


12

13

14

15

10

11

8

9

6

7

4

5

CAV

1

2

3

20

21

22

23

24

16

17

18

19

CONTROLLER ANTILOCK BRAKE - BLACK 24 WAY

CIRCUIT FUNCTION

Z101 12BK/OR

B1 18YL/DB

B2 18YL

-

D25 18VT/YL

B6 18WT/DB

B7 18WT

A20 12RD/DB

-

F20 18DB/PK

D52 18LG/WT (DIESEL)

B22 18DG/YL

-

D51 18DG/YL (DIESEL)

-

Z102 12BK/OR

G9 18GY/BK

L50 18WT/TN

B3 18LG/DB

B4 18LG

Z231 18BK

B8 18RD/DB

B9 18RD

A10 12RD/DG

GROUND

RIGHT REAR WHEEL SPEED SENSOR SIGNAL

RIGHT REAR WHEEL SPEED SENSOR 12 VOLT SUPPLY

-

PCI BUS

RIGHT FRONT WHEEL SPEED SENSOR SIGNAL

RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY

-

FUSED B(+)

FUSED IGNITION SWITCH OUTPUT (RUN)

CAN C BUS(+)

-

VEHICLE SPEED SIGNAL

CAN C BUS(-)

-

GROUND

BRAKE FLUID LEVEL SWITCH SENSE


LEFT REAR WHEEL SPEED SENSOR SIGNAL

LEFT REAR WHEEL SPEED SENSOR 12 VOLT SUPPLY

GROUND

LEFT FRONT WHEEL SPEED SENSOR SIGNAL

LEFT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY

FUSED B(+)

CAV

1

2

3

CRANKSHAFT POSITION SENSOR (GAS) - BLACK 3 WAY

CIRCUIT FUNCTION

K24 18GY/BK

K4 18BK/LB

K7 18OR

CRANKSHAFT POSITION SENSOR SIGNAL

SENSOR GROUND

5 VOLT SUPPLY

228


14

15

16

10

11

12

13

8

9

6

7

CAV

1

2

3

4

5

-

D25 20YL/VT

-

Z305 20BK/OR

Z306 20BK/LG

D32 20LG/DG

D21 20PK

D19 20VT/OR

-

-

-

-

-

D20 20LG

-

F33 20PK/RD

CIRCUIT

DATA LINK CONNECTOR - BLACK 16 WAY

FUNCTION

-

PCI BUS

-

GROUND

GROUND

SCI RECEIVE

SCI TRANSMIT

-

BODY CONTROL MODULE FLASH ENABLE

-

-

-

-

SCI RECEIVE

-

FUSED B(+)

12

13

14

15

16

10

11

8

9

6

7

4

5

CAV

1

2

3

DIAGNOSTIC JUNCTION PORT - BLACK 16 WAY

CIRCUIT FUNCTION

D25 20YL/VT/BR

D25 20YL/VT/DG (AZC)

D25 20YL/VT/DB

D25 20YL/VT/OR

D25 20YL/VT/RD

D25 20YL/VT/WT

D25 20YL/VT

D25 20YL/VT/GY

-

-

D25 20YL/VT (DIESEL)

-

-

-

-

-

PCI BUS (PCM/ECM TCM PDM CD SKIM)

PCI BUS (AZC)

PCI BUS (RADIO)

PCI BUS (ACM)

PCI BUS (MIC)

PCI BUS (BCM)

PCI BUS (DLC)

PCI BUS (DDM ABS MEM EVIC APM ITM RAIN SENSOR)

-

-

PCI BUS (SHIFTER ASSEMBLY)

-

-

-

-

-

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

229

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


59

60

61

62

55

56

57

58

52

53

54

48

49

50

51

44

45

46

47

40

41

42

43

35

36

37

38

39

31

32

33

34

76

77

78

79

72

73

74

75

80

81

67

68

69

70

71

63

64

65

66

27

28

29

30

23

24

25

26

18

19

20

21

22

14

15

16

17

10

11

12

13

8

9

6

7

3

4

5

CAV

1

2

CIRCUIT

Z108 14BK/DG

Z108 14BK/DG

K20 14DB

F142 14RD/DG

F142 14RD/DG

D52 18DG/WT

D25 20VT/YL

K944 20BR/DG

K44 20YL/GY

-

Y53 20BK/YL

K155 20YL/WT

Y40 20DG/VT

K22 20RD/DB

K81 20DB/DG

Y100 20BR/GY

F300 20RD/BK

Z11 20BK/WT

K4 18BK/LB

F991 20RD/DB

K6 18VT/WT

K3 20BK

D51 18WT

K77 20BR/WT

G60 20BR/DB

-

K25 20VT/DG

K255 20WT/DG

-

Y43 20WT/VT

C18 20DB

-

V37 20RD/DG

K226 20DB/WT

K2 20DG/RD

K21 20DG/WT

Y101 20

K924 20YL

-

-

-

-

-

-

L50 20WT/DB

K29 20WT/PK

-

-

-

F855 18BR/YL

-

-

-

Z189 20BR

B22 20DG/YL

K225 18BK

-

K4 20BK/LB

K900 18GY

K7 20RD/WT

K51 20DB/YL

-

-

-

-

-

K173 20GY

-

C13 20DB/RD

-

-

K236 20GY/PK

-

T752 20DG/RD

K132 20BR/BK

Y42 20BR/BK

K152 20WT

-

-

K46 20DB/BK

K46 20DB/BK

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY

FUNCTION

GROUND

GROUND

GENERATOR FIELD CONTROL

FUSED AUTO SHUT DOWN RELAY OUTPUT


CAN C BUS(+)

PCI BUS

CAMSHAFT POSITION SENSOR GROUND

CAMSHAFT POSITION SENSOR SIGNAL

-

BOOST PRESSURE SENSOR SIGNAL

MASS AIR FLOW SENSOR SIGNAL

FUEL PRESSURE SENSOR SIGNAL



FUEL PRESSURE SENSOR GROUND

-

-

BATTERY SENSE (+)

BATTERY SENSE (-)

SENSOR GROUND

FUSED IGNITION SWITCH OUTPUT (RUN-START)

SENSOR REFERENCE VOLTAGE B

CRANKSHAFT POSITION SENSOR SIGNAL 1

CAN C BUS(-)

-

-

-

TRANSFER CASE POSITION SENSOR SIGNAL

ENGINE OIL PRESSURE SENSOR SIGNAL

-

BATTERY TEMPERATURE SENSOR SIGNAL

-


ACCELERATOR PEDAL POSITION SENSOR 1 5-VOLT SUPPLY

A/C PRESSURE SENSOR SIGNAL

-

SPEED CONTROL SWITCH SIGNAL

FUEL LEVEL SENSOR SIGNAL

ENGINE COOLANT TEMPERATURE SENSOR SIGNAL

INTAKE AIR TEMPERATURE SENSOR SIGNAL

CRANKSHAFT POSITION SENSOR SHIELD

CRANKSHAFT POSITION SENSOR SIGNAL 2

-

-

-



-

SENSOR REFERENCE VOLTAGE A

-

-

-

MASS AIR FLOW SENSOR GROUND

VEHICLE SPEED SENSOR SIGNAL


-

WATER IN FUEL SENSOR GROUND

INTAKE PORT SWIRL ACTUATOR SIGNAL

FUEL PRESSURE SENSOR 5 VOLT SUPPLY

AUTO SHUT DOWN RELAY CONTROL

-

-

-

-

-

HYDRAULIC RADIATOR FAN SOLENOID CONTROL

-

A/C COMPRESSOR CLUTCH RELAY CONTROL

-

-

GLOW PLUG RELAY NO. 2 CONTROL

-

ENGINE STARTER MOTOR RELAY CONTROL

VISCOUS/CABIN HEATER RELAY CONTROL

WASTEGATE SOLENOID CONTROL

GLOW PLUG RELAY NO. 1 CONTROL

-

-

FUEL PRESSURE SOLENOID CONTROL

FUEL PRESSURE SOLENOID CONTROL

230


CAV

82

83

84

85

86

D21 20PK

ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAY

CIRCUIT

87

88 -

-

89

90

91

92

93

94

K35 20GY/YL

-

-

-

-

G123 20DG/WT

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112 T41 20BK/WT

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

SCI TRANSMIT

EGR SOLENOID CONTROL

WATER IN FUEL SIGNAL

FUNCTION

-

-

-

-

-

PARK/NEUTRAL POSITION SWITCH SENSE

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

113

114

115 K14 14BK/YL

116 K63 14BK

-

-

117

118 K11 14BK/DB

-

119 K38 14BK/DG

120 K12 14BK/VT

121 K13 14BK/RD

FUEL INJECTOR NO. 4 CONTROL

COMMON INJECTOR DRIVER





-

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

CAV

1

2

3

4

RD

WT

DG

BK

CIRCUIT

GOVERNOR PRESSURE SENSOR

FUNCTION

5 VOLT SUPPLY

GOVERNOR PRESSURE SENSOR SIGNAL

SENSOR GROUND

TRANSMISSION FLUID TEMPERATURE SIGNAL

231

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


CAV

1

2

INPUT SPEED SENSOR (4.7L) - BLACK 2 WAY

CIRCUIT FUNCTION

T52 18RD/BK

T13 18DB/BK

INPUT SPEED SENSOR SIGNAL

SPEED SENSOR GROUND

232

233


U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


30

30

31

32

33

26

27

28

29

19

20

21

22

23

24

25

15

16

17

18

11

12

13

14

9

10

7

8

5

6

3

4

FUSE

NO.

1

2

10A

15A

20A

20A

10A

15A

25A

15A

10A

10A

15A

15A

10A

10A

10A

15A

15A

15A

10A

10A

10A

10A

10A

30A

10A

10A

10A

10A

10A

10A

10A

AMPS

-

-

-

FUSED CIRCUIT

FUSES (JB)

L33 18RD

INTERNAL

INTERNAL

INTERNAL

INTERNAL

INTERNAL

INTERNAL

F72 16RD/YL (EXCEPT BUILT-UP-EXPORT)

C15 20BK/WT

F991 20OR/DB

-

-

-

L43 18VT

L44 18VT/RD

L34 18RD/OR

INTERNAL

F9 20RD/BK

F20 18DB/PK

INTERNAL

INTERNAL

INTERNAL

F32 20PK/DB

INTERNAL

INTERNAL

F30 18RD

INTERNAL (BUILT-UP-EXPORT)

INTERNAL

INTERNAL

X12 18RD/WT (RHD)

X12 16WT/RD (LHD)

F45 20YL/RD

F14 18LG/YL

F23 18DB/YL

FUNCTION

-

-

FUSED HIGH BEAM RELAY OUTPUT

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED REAR WINDOW DEFOGGER RELAY OUTPUT


-

FUSED LOW BEAM RELAY OUTPUT

FUSED LOW BEAM RELAY OUTPUT

FUSED HIGH BEAM RELAY OUTPUT

FUSED B(+)

FUSED B(+)





FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED CIGAR LIGHTER RELAY OUTPUT

FUSED B(+)

FUSED IGNITION SWITCH OUTPUT (RUN-ACC)




FUSED IGNITION SWITCH OUTPUT (START)



234


39

40

41

42

35

36

37

38

31

32

33

34

25

26

27

28

29

30

47

48

49

50

43

44

45

46

51

52

14

15

16

17

10

11

12

13

8

9

6

7

CAV

1

2

3

4

5

22

23

24

18

19

20

21

JUNCTION BLOCK C2 (LHD) - BLACK 52 WAY

CIRCUIT FUNCTION

X3 22GY/OR

L39 20LB

L61 20TN/LG

-

-

-

-

V6 16DB

V6 16DB (GAS)

L62 18BR/RD

F991 20OR/DB

L39 20LB

-

-

V16 22VT

-

-

-

-

L7 20BK/YL

L7 20BK/YL

-

-

F37 16RD/LB (EXCEPT

BASE)

F22 20WT/PK

L60 20TN

F45 20YL/RD

V55 16TN/RD

-

-

F72 16RD/YL

M1 20PK/RD

V55 16TN/RD (GAS)

-

-

A146 12OR/WT

L34 18RD/OR

-

L43 18VT

F20 18DB/PK

F12 20DB/WT

-

-

-

A146 12OR/WT

-

F32 20PK/DB

-

L44 18VT/RD

L33 18RD

-

F60 14RD/WT (EXCEPT

BASE)

HORN RELAY CONTROL

-

FOG LAMP RELAY OUTPUT

-

LEFT TURN SIGNAL

-

-



RIGHT TURN SIGNAL



-

-

WIPER HIGH/LOW RELAY CONTROL

-

-

-

-

PARK LAMP RELAY OUTPUT


-

-

FUSED B(+)


RIGHT TURN SIGNAL


WIPER PARK SWITCH SENSE

-

-

FUSED B(+)

FUSED B(+)


-

-

FUSED B(+)

-

FUSED RIGHT HIGH BEAM OUTPUT

FUSED LEFT LOW BEAM OUTPUT

-

-



-

FUSED B(+)

-

FUSED B(+)

-

FUSED RIGHT LOW BEAM OUTPUT

FUSED LEFT HIGH BEAM OUTPUT

-

FUSED B(+)

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

235

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


31

32

33

34

27

28

29

30

20

21

22

23

24

25

26

16

17

18

19

12

13

14

15

10

11

8

9

6

7

4

5

CAV

1

2

3

47

48

49

50

51

52

43

44

45

46

39

40

41

42

35

36

37

38

JUNCTION BLOCK C2 (RHD) - BLACK 52 WAY

CIRCUIT FUNCTION

X3 22BK/RD

-

L39 20LB

-

L61 20TN/LG

-

-

V6 16DB

V6 16DB (GAS)

F45 20YL/RD

V55 16TN/RD

-

-

-

M1 20PK/RD

V55 16TN/RD (GAS)

-

-

A146 12OR/WT

-

L34 18RD/OR

L43 18VT

-

-

F20 18DB/PK

F12 20DB/WT (GAS)

-

A146 12OR/WT

-

F32 20PK/DB

L44 18VT/RD

L33 18RD

F60 16RD/WT

-

-

L62 20BR/RD

F991 20OR/DB (GAS)

L39 20LB

-

-

V16 22VT

L7 20BK/YL

L7 18BK/YL

F37 16RD/LB

F22 18WT/TN

L60 20TN

-

-

-

-

-

-

HORN RELAY CONTROL

-


-

LEFT TURN SIGNAL

-

-



RIGHT TURN SIGNAL



-

-

-

-

-

-

-



-

-

FUSED B(+)


RIGHT TURN SIGNAL



-

-

-

FUSED B(+)


-

-

FUSED B(+)

-

FUSED RIGHT HIGH BEAM OUTPUT

FUSED LEFT LOW BEAM OUTPUT

-

-



-

FUSED B(+)

-

FUSED B(+)

-

FUSED RIGHT LOW BEAM OUTPUT

FUSED LEFT HIGH BEAM OUTPUT

-

FUSED B(+)

236


32

33

34

35

26

27

28

29

30

31

22

23

24

25

18

19

20

21

14

15

16

17

10

11

12

13

8

9

6

7

CAV

1

2

3

4

5

48

49

50

51

52

44

45

46

47

40

41

42

43

36

37

38

39

C79 20BK/WT

-

-

-

-

-

-

-

A31 12RD/BK

-

F60 16RD/WT

-

A41 12YL

F14 20LG/YL

A22 12BK/OR

F991 18OR/DB

Z234 20BK

CIRCUIT

F22 20WT/PK

-

L60 20TN

L302 20LB/YL

L61 20TN/LG

L91 20DB/PK

-

L305 20LB/WT

-

L309 20PK/LG

F23 18DB/YL

F22 20WT/PK

F85 16VT/WT

-

F33 20PK/RD

X12 16WT/RD

M1 20PK

M1 20PK (AZC)

A21 12DB

-

F70 20PK/BK

X3 20GY/OR

F30 16RD

F33 20PK/RD

V23 20BR/PK

-

M1 20PK

Z132 20BK/OR

-

-

F70 20PK/BK

G5 20DB/WT

G5 20DB/WT

F12 20DB/WT

-

JUNCTION BLOCK C3 - BLACK 52 WAY

FUNCTION


-

RIGHT TURN SIGNAL

RIGHT TURN SWITCH SENSE

LEFT TURN SIGNAL

HAZARD SWITCH SENSE

-

LEFT TURN SWITCH SENSE

-

HIGH BEAM RELAY CONTROL



-

FUSED B(+)

FUSED REAR WINDOW DEFOGGER RELAY OUTPUT

-

-

-

-

-

-

-

-

IGNITION SWITCH OUTPUT (RUN-ACC)

FUSED B(+)

-

IGNITION SWITCH OUTPUT (START)


IGNITION SWITCH OUTPUT (RUN)


GROUND

FUSED B(+)


FUSED B(+)

FUSED B(+)

IGNITION SWITCH OUTPUT (RUN-START)

-

FUSED B(+)

HORN RELAY CONTROL

FUSED CIGAR LIGHTER RELAY OUTPUT

FUSED B(+)

-


FUSED B(+)

GROUND

-

-

FUSED B(+)

-




U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

237

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


5

6

3

4

CAV

1

2

LEFT REAR LAMP ASSEMBLY - BLACK 6 WAY

CIRCUIT FUNCTION

L1 18VT/BK

L95 18DG/YL (BUILT-UP-

EXPORT)

L7 18BK/YL

L63 18DG/RD

Z150 18BK

L50 18WT/TN

BACK-UP LAMP FEED

REAR FOG LAMP RELAY OUTPUT


LEFT TURN SIGNAL

GROUND


CAV

1

2

3

4

LINE PRESSURE SENSOR (4.7L) - BLACK 4 WAY

CIRCUIT FUNCTION

Z114 14BK/LB

T138 14GY/LB

T130 14VT/TN

-

GROUND

5 VOLT SUPPLY

LINE PRESSURE SENSOR SIGNAL

-

CAV

1

2

OUTPUT SPEED SENSOR (4.0L) - GRAY 2 WAY

CIRCUIT FUNCTION

T13 18DB/BK

T14 18LG/WT

SPEED SENSOR GROUND

OUTPUT SPEED SENSOR SIGNAL

CAV

1

2

OUTPUT SPEED SENSOR (4.7L) - BLACK 2 WAY

CIRCUIT FUNCTION

T14 18LG/WT

T13 18DB/BK


SPEED SENSOR GROUND

238


CAV

1

2

3

PARK/NEUTRAL POSITION SWITCH (4.0L) - BLACK 3 WAY

CIRCUIT FUNCTION

L1 18VT/BK

T41 18BK/WT

F22 18WT/PK

BACK-UP LAMP FEED



29

30

31

32

21

22

23

24

17

18

19

20

25

26

13

14

15

16

9

10

11

12

6

7

8

4

5

CAV

1

2

3

27

28

29

K93 14TN/OR

F991 18OR/DB

K94 14TN/LG (4.7L)

K4 18BK/LB

K96 14TN/LB (4.7L)

T41 18BK/WT

K91 14TN/RD

K24 18GY/BK

K98 14LB/RD (4.7L)

K60 18YL/BK

K40 18BR/WT

-

-

K77 18LG/BK

K21 18BK/RD

K2 18TN/BK

K7 18OR

K44 18TN/YL

K39 18GY/BK

K59 18VT/BK

K95 14TN/DG (4.7L)

A7 14RD/BK

K22 18OR/RD

K41 18BK/DG

K141 18TN/WT

K241 18LG/RD (EXCEPT

4.0L BUILT-UP-EXPORT)

K1 18DG/RD

-

K341 18TN/WT (4.0L EX-

CEPT BUILT-UP-EXPORT)

K341 18PK/WT (4.7L)

Z82 14BK/WT

-

Z81 14BK/TN

POWERTRAIN CONTROL MODULE C1 (GAS) - BLACK 32 WAY

CIRCUIT FUNCTION

COIL DRIVER NO. 3


COIL DRIVER NO. 4

SENSOR GROUND

COIL DRIVER NO. 6


COIL DRIVER NO. 1


COIL DRIVER NO. 8

IDLE AIR CONTROL NO. 2 DRIVER


-

-

TRANSFER CASE POSITION SENSOR INPUT

INTAKE AIR TEMPERATURE SENSOR SIGNAL

ENGINE COOLANT TEMPERATURE SENSOR SIGNAL

5 VOLT SUPPLY

CAMSHAFT POSITION SENSOR SIGNAL



COIL DRIVER NO. 5

FUSED B(+)

THROTTLE POSITION SENSOR SIGNAL

OXYGEN SENSOR 1/1 SIGNAL



MAP SENSOR SIGNAL

COIL DRIVER NO. 1


GROUND

GROUND

-

-

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

239

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


27

28

29

30

31

32

20

21

22

23

24

25

26

16

17

18

19

12

13

14

15

10

11

8

9

6

7

4

5

CAV

1

2

3

POWERTRAIN CONTROL MODULE C2 (GAS) - WHITE 32 WAY

CIRCUIT FUNCTION

T54 18VT (4.0L)

K26 18VT (4.7L)

K11 18WT/DB

-

K13 18YL/WT

K38 18GY

K97 14BR (4.7L)

K88 18PK (4.0L)

K92 14TN/PK

K20 18DG

T20 18LB (4.0L)

K58 18BR/DB

K28 18GY/LB (4.7L)

-

K12 18TN

K14 18LB/BR

K173 18LG

-

C18 18DB

-

T60 18BR (4.0L)

G60 18GY/YL

-

-

T13 18DB/BK (4.0L)

-

B22 18DG/YL

T14 18LG/WT (4.0L)

T25 18LG/RD (4.0L)

K30 18PK/YL (4.0L)

K6 18VT/BK

-

TRANSMISSION TEMPERATURE SENSOR SIGNAL

FUEL INJECTOR NO. 7 DRIVER

-




COIL DRIVER NO. 7

GOVERNOR PRESSURE SOLENOID CONTROL

COIL DRIVER NO. 2

GENERATOR FIELD DRIVER

TORQUE CONVERTER CLUTCH SOLENOID CONTROL



-



RADIATOR FAN RELAY CONTROL

-

A/C PRESSURE SIGNAL

-

3-4 SHIFT SOLENOID CONTROL

-

ENGINE OIL PRESSURE SENSOR SIGNAL

-

OUTPUT SPEED SENSOR GROUND

-

VEHICLE SPEED SENSOR SIGNAL



TRANSMISSION CONTROL RELAY CONTROL

5 VOLT SUPPLY

-

240


15

16

17

18

13

13

14

11

12

13

13

29

30

31

32

26

27

28

29

19

20

21

22

23

24

25

CAV

1

2

3

4

5

6

7

8

9

10

POWERTRAIN CONTROL MODULE C3 (GAS) - GRAY 32 WAY

CIRCUIT FUNCTION

C13 18DB/OR

-

K51 18DB/YL

V36 18TN/RD

V35 18LG/RD

-

K42 18DB/LG (4.7L HIGH

OUTPUT)

K99 18BR/OR

K512 18RD/YL (4.7L)

K106 18WT/DG (EXCEPT

BUILT-UP-EXPORT)

V32 18OR/DG

F42 18DG/LG

T10 18YL/DG (4.7L RHD)

T6 18OR/WT (4.0L LHD)

T10 18DG/LG (4.7L LHD)

T6 18OR/BK (4.0L RHD)

K107 18OR/PK (EXCEPT

BUILT-UP-EXPORT)

K25 18VT/LG

K299 18BR/WT

-

K142 18GY/BK (4.7L HIGH

OUTPUT)

K31 18BR

K52 18PK/BK

-

K29 18WT/PK

K125 18WT/DB

-

-

K226 18LB/YL

D21 18PK

-

D32 18LG (LHD)

D32 18LG/DG (RHD)

D25 18VT/YL

V37 18RD/LG

-

A/C COMPRESSOR CLUTCH RELAY CONTROL

-

AUTOMATIC SHUT DOWN RELAY CONTROL

SPEED CONTROL VACUUM SOLENOID CONTROL

SPEED CONTROL VENT SOLENOID CONTROL

-

KNOCK SENSOR SIGNAL

OXYGEN SENSOR 1/1 HEATER CONTROL

OXYGEN SENSOR DOWNSTREAM RELAY CONTROL

LEAK DETECTION PUMP SOLENOID CONTROL

SPEED CONTROL SUPPLY


OVERDRIVE OFF SWITCH SENSE




LEAK DETECTION PUMP SWITCH SENSE

BATTERY TEMPERATURE SENSOR SIGNAL

OXYGEN SENSOR 2/1 HEATER CONTROL

-

KNOCK SENSOR NO. 2 SIGNAL

FUEL PUMP RELAY CONTROL

DUTY CYCLE EVAP/PURGE SOLENOID CONTROL

-

-

-


GENERATOR SOURCE

FUEL LEVEL SENSOR SIGNAL

SCI TRANSMIT

-

SCI RECEIVE

SCI RECEIVE

PCI BUS

-

SPEED CONTROL SWITCH SIGNAL

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

241

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


242

19

20

21

22

16

17

18

18

23

24

25

26

27

28

13

14

15

16

9

10

11

12

7

8

5

6

FUSE

NO.

1

2

3

4

40A

40A

50A

40A

50A

50A

40A

50A

50A

40A

40A

50A

20A

20A

15A

15A

15A

10A

15A

20A

20A

20A

AMPS

-

-

-

-

-

-

-

-

CAV

30

85

85

86

87

87A

CIRCUIT

F22 18WT/PK

F22 18WT/PK

F22 18WT/PK

T2 18TN/BK

L1 18VT/BK

-


C1 12DG

A149 12RD/TN

A145 10WT/RD

A10 12RD/DG

A105 10DB/RD

A147 10RD/GY

A1 12RD

A110 10VT/RD

A146 10OR/WT

A14 14RD/WT

A2 12PK/BK

A148 10PK/WT

F15 18DB/WT

F15 18 DB/WT

F62 18RD

F62 18RD

A17 14RD/BK

F300 18RD/BK

A80 18RD/LG

A20 12RD/DB

F142 14OR/DG

A148 16LG/RD

-

-

-

-

FUSES (DIESEL)

FUSED CIRCUIT

-

-

-

-

BACK-UP LAMP RELAY (DIESEL)

FUNCTION




BACK-UP LAMP RELAY CONTROL

BACK-UP LAMP FEED

-

FUNCTION

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

-

FUSED B(+)

FUSED B(+)

FUSED B(+)

-

-

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)



-

FUSED B(+)

FUSED B(+)

-

-

FUSED B(+)

FUSED B(+)

FUSED B(+)

-

FUSED B(+)


FUSED B(+)

-

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

243

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


244

22

23

24

25

26

26

27

28

18

19

20

21

16

16

17

18

12

13

14

15

10

11

8

9

6

7

5

5

FUSE

NO.

1

2

3

4

30A

30A

30A

50A

40A

40A

40A

50A

40A

50A

40A

50A

15A

15A

15A

15A

10A

15A

20A

20A

15A

15A

20A

15A

AMPS

-

-

-

-

-

-

-

-

86

86

87

87A

CAV

30

85

85

CIRCUIT

A30 14RD/WT

K125 18WT/DB (4.0L)

Z307 18BK (4.7L)

K30 20PK (RHD)

K30 20PK/YL (LHD)

T16 14RD

-


C1 12DG

A149 12RD/TN

A145 10WT/RD

A10 12RD/DG

A30 14RD/WT

A30 14RD/WT (4.7L)

A14 14RD/DG

A147 10RD/GY

A1 12RD

A146 10OR/WT

A2 12PK/BK

A148 10PK/WT

F142 18OR/DG

F142 18OR/DG

F62 18RD

F62 18RD

A7 14RD/BK

A17 18RD/BK

-

-

-

-

-

-

-

FUSES (GAS)

FUSED CIRCUIT

-

A62 16VT/LB

A20 12RD/DB

F42 18DG/LG

F42 18DG/LG

A148 16LG/RD

T15 18YL/BR(4.0L)

TRANSMISSION CONTROL RELAY (GAS)

FUNCTION

FUSED B(+)

GENERATOR SOURCE

GROUND



TRANSMISSION CONTROL RELAY OUTPUT

-

FUNCTION

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

FUSED B(+)

-

FUSED B(+)

FUSED B(+)



-

FUSED B(+)

FUSED B(+)

FUSED B(+)

-

-

-

-

FUSED B(+)

-

-

FUSED B(+)

FUSED B(+)



FUSED B(+)

FUSED TRANSMISSION CONTROL RELAY OUTPUT

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

245

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


3

4

5

6

CAV

1

2

RIGHT REAR LAMP ASSEMBLY - BLACK 6 WAY

CIRCUIT FUNCTION

L1 18VT/BK

L95 18DG/YL (BUILT-UP-

EXPORT)

L7 18BK/YL

L62 18BR/RD

Z151 18BK

L50 18WT/TN

BACK-UP LAMP FEED

REAR FOG LAMP RELAY OUTPUT


RIGHT TURN SIGNAL

GROUND


6

7

4

5

CAV

1

2

3

10

11

8

9

12

SHIFTER ASSEMBLY (C201 DIESEL) - WHITE 12 WAY

CIRCUIT FUNCTION

K2 20WT/PK

D25 20RD

D21 20PK

F12 20DB/WT

-

T2 20TN/BK

Z234 20WT

T41 20BK/WT

F991 20OR/DB

-

-

-


PCI BUS

-

-

-

SCI TRANSMIT



GROUND



CAV

1

2

3

4

5

6

CIRCUIT

SHIFTER ASSEMBLY (GAS) - WHITE 6 WAY

FUNCTION

E2 20OR

Z234 18BK

T6 18OR/WT

Z300 18BK

F12 20DB/WT

K29 18WT/PK

PANEL LAMPS DRIVER

GROUND


GROUND



6

7

4

5

CAV

1

2

3

10

11

8

9

12

SHIFTER ASSEMBLY C1 (DIESEL) - BLACK 12 WAY

CIRCUIT FUNCTION

F991 20OR/DB

F991 20OR/DB

F991 20OR/DB

T2 20TN/BK

D25 20OR

W0 20DB/WT

W1 20VT/WT

W2 20VT

W3 20BK

W4 20PK/OR

Z234 20WT

Z234 20WT





PCI BUS

SHIFTER C1 SENSE

SHIFTER C2 SENSE

SHIFTER C3 SENSE

SHIFTER C4 SENSE

SHIFTER C5 SENSE

GROUND

GROUND

246


4

5

6

CAV

1

2

3

CIRCUIT

SHIFTER ASSEMBLY C2 (DIESEL) - 6 WAY

FUNCTION

F12 20DB/WT

-

-

K2 20WT/PK

F991 20OR/DB

Y1 20DB/PK

-

-




PARK LOCKOUT SOLENOID CONTROL

CAV

1

2

3

THROTTLE POSITION SENSOR (4.0L) - BLACK 3 WAY

CIRCUIT FUNCTION

K7 18OR

K4 18BK/LB

K22 18OR/RD

5 VOLT SUPPLY

SENSOR GROUND


CAV

1

2

3

THROTTLE POSITION SENSOR (4.7L) - 3 WAY

CIRCUIT FUNCTION

K7 18OR

K22 18OR/RD

K4 18BK/LB

5 VOLT SUPPLY


SENSOR GROUND

CAV

1

1

2

2

TRANSFER CASE POSITION SENSOR - BLACK 2 WAY

CIRCUIT FUNCTION

K77 20BR/WT (DIESEL)

K77 18LG/BK (GAS)

K4 20BK/LB (DIESEL)

K4 18BK/LB (GAS)



SENSOR GROUND

SENSOR GROUND

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

247

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


51

52

53

54

55

56

57

58

59

60

47

48

49

50

43

44

45

46

39

40

41

42

35

36

37

38

28

29

30

31

32

33

34

24

25

26

27

17

18

19

20

21

22

23

13

14

15

16

6

7

4

5

CAV

1

2

3

10

11

12

8

9

TRANSMISSION CONTROL MODULE (4.7L) - BLACK 60 WAY

CIRCUIT FUNCTION

T1 18LG/BK

T2 18TN/BK

T3 18VT

K24 18GY/BK

D21 18PK

-

-

F45 18YL/RD

T9 18OR/BK

T10 18YL/DG

F991 18OR/DB

K22 18OR/RD

T13 18DB/BK

T14 18LG/WT

K30 18PK/YL

T16 14RD

T16 14RD

T118 18YL/DB

T119 18WT/DB

T120 18LG

-

-

-

T29 18GY

T130 14VT/TN

-

-

-

-

-

-

-

-

-

-

T16 14RD

Z113 14BK/WT

T138 14GY/LB

Z112 14BK/YL

T140 18VT/LG

T41 18WT

T42 18VT/WT

D25 18YL/VT

-

-

D20 18LG

T147 18LB

T48 18DB

T6 18VT/WT

T150 18BR/LB

K4 18BK/LB

T52 18RD/BK

Z114 14BK/LG

T54 18VT

T59 18PK

A30 14RD/WT

Z12 14BK/TN

-

T159 18DG/WT

T60 18BR

TRS T1 SENSE

TRS T2 SENSE

TRS T3 SENSE

-

-


SCI TRANSMIT


OVERDRIVE PRESSURE SWITCH SENSE

TORQUE MANAGEMENT REQUEST SENSE



SPEED SENSOR GROUND





PRESSURE CONTROL SOLENOID CONTROL

2C SOLENOID CONTROL

LR SOLENOID CONTROL

-

-

-

-

UNDERDRIVE PRESSURE SWITCH SENSE

LINE PRESSURE SENSOR SIGNAL

-

-

-

-

-

-

-

-

-


GROUND

5 VOLT SUPPLY

GROUND

MS SOLENOID CONTROL

TRS T41 SENSE

TRS T42 SENSE

PCI BUS

-

-

SCI RECEIVE

2C PRESSURE SWITCH SENSE



LR PRESSURE SWITCH SENSE

SENSOR GROUND

INPUT SPEED SENSOR SIGNAL

GROUND


UNDERDRIVE SOLENOID CONTROL

FUSED B(+)

GROUND

4C SOLENOID CONTROL

OVERDRIVE SOLENOID CONTROL

-

248


26

27

28

29

30

10

23

24

25

8

9

6

7

CAV

1

2

3

4

5

TRANSMISSION CONTROL MODULE C1 (DIESEL) - BLACK 18 WAY

CIRCUIT FUNCTION

D21 20PK

W4 20PK/OR

Y1 20DB/PK

T41 20BK/WT

-

-

-

-

W0 20DB/WT

W1 20VT/WT

W2 20VT

W3 20BK

F991 20OR/DB

Z234 20WT

-

-

-

-

SCI TRANSMIT

-

SHIFTER C5 SENSE

PARK LOCKOUT SOLENOID CONTROL

-

-


-

-

-

-

-

SHIFTER C1 SENSE

SHIFTER C2 SENSE

SHIFTER C3 SENSE

SHIFTER C4 SENSE


GROUND

38

H1

L2

34

35

36

37

15

16

17

33

CAV

12

13

14

TRANSMISSION CONTROL MODULE C2 (DIESEL) - BLACK 14 WAY

CIRCUIT FUNCTION

T52 18RD/BK

T39 18GY/LB

T60 18BR

T159 18DG/WT

T119 18WT/DB

T120 18LG

T13 18DB/BK

T54 18VT

T14 18LG/WT

T591 18YL/DB

T118 18YL/DB

T16 18RD

D52 18LG/WT

D51 18DG/WT

N2 INPUT SPEED SENSOR

SENSOR SUPPLY VOLTAGE

1-2/4-5 SOLENOID CONTROL

3-4 SOLENOID CONTROL


TCC SOLENOID CONTROL

SENSOR GROUND

TEMP SENSOR - P/N SWITCH


MODULATION PRESSURE SOLENOID CONTROL

SHIFT PRESSURE SOLENOID CONTROL

SOLENOID SUPPLY VOLTAGE

CAN C BUS(+)

CAN C BUS(-)

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N

6

7

4

5

8

CAV

1

2

3

TRANSMISSION SOLENOID (4.0L) - BLACK 8 WAY

CIRCUIT FUNCTION

T15 18LG

K6 18VT/BK

K4 18BK/LB

T25 18LG/RD

K88 18PK

T60 18BR

T20 18LB

T54 18VT

FUSED TRANSMISSION CONTROL RELAY OUTPUT

5 VOLT SUPPLY

SENSOR GROUND


GOVERNOR PRESSURE SOLENOID CONTROL

3-4 SHIFT SOLENOID CONTROL

TORQUE CONVERTER CLUTCH SOLENOID CONTROL


249

U

T

S

P

I

N

O

E

C

T

O

R

C

O

N

N


10

11

8

9

12

13

6

7

4

5

CAV

1

2

3

TRANSMISSION SOLENOID ASSEMBLY (DIESEL) - BLACK 13 WAY

CIRCUIT FUNCTION

T14 18LG/WT

T591 18YL/DB

T52 18RD/BK

T54 18VT

-

T16 18RD

T39 18GY/LB

T119 18WT/DB

T159 18DG/WT

T118 18YL/DB

T120 18LG

T13 18DB/BK

T60 18BR


MODULATION PRESSURE SOLENOID CONTROL

N2 INPUT SPEED SENSOR SIGNAL

TEMP SENSOR - P/N SWITCH

-

SOLENOID SUPPLY VOLTAGE

SENSOR SUPPLY VOLTAGE



SHIFT PRESSURE SOLENOID CONTROL

TCC SOLENOID CONTROL

SENSOR GROUND

1-2/4-5 SOLENOID CONTROL

12

13

14

15

10

11

8

9

6

7

4

5

CAV

1

2

3

20

21

22

23

16

17

18

19

TRANSMISSION SOLENOID/TRS ASSEMBLY (4.7L) - GRAY 23 WAY

CIRCUIT FUNCTION

F22 18WT/PK

T120 18LG

T41 18BK/WT

T41 18WT

T42 18VT/WT

L1 18VT/BK

T60 18BR

T3 18VT

T1 18LG/BK

T16 14RD

T48 18DB

T118 18YL/DB

T2 18TN/BK

T150 18BR/LB

T147 18LB

T9 18OR/BK

T59 18PK

T29 18GY

T159 18DG/WT

T119 18WT/DB

T140 18VT/LG

T13 18DB/BK

T54 18VT


LR SOLENOID CONTROL

PARK/NEUTRAL POSITION SWITCH SENSE (T41)

TRS T41 SENSE

TRS T42 SENSE

BACK-UP LAMP FEED

OVERDRIVE SOLENOID CONTROL

TRS T3 SENSE

TRS T1 SENSE



PRESSURE CONTROL SOLENOID CONTROL

TRS T2 SENSE

LR PRESSURE SWITCH SENSE


OVERDRIVE PRESSURE SWITCH SENSE

UNDERDRIVE SOLENOID CONTROL

UNDERDRIVE PRESSURE SWITCH SENSE

4C SOLENOID CONTROL

2C SOLENOID CONTROL

MS SOLENOID CONTROL

SPEED SENSOR GROUND


250

10.0

SCHEMATIC DIAGRAMS

10.1

TRANSMISSION SCHEMATIC DIAGRAM

SCHEMATIC DIAGRAMS

251

R

A

M

S

D

I

A

G

M

A

T

I

C

S

C

H

E

NOTES

252

11.0

CHARTS AND GRAPHS

11.1

PRESSURE SWITCH STATES


C

H

A

R

T

S

A

N

D

G

R

A

P

H

S

11.2

SHIFT LEVER ERROR CODES

253

C

H

A

R

T

S

A

N

D

G

R

A

P

H

S


11.3

TRANSMISSION RANGE SENSOR STATES

254

NOTES

255

NOTES

256

Transmission

1.0

INTRODUCTION

1.1

SYSTEM COVERAGE

1.2

SIX -STEP TROUBLESHOOTING

PROCEDURE

2.0

IDENTIFICATION OF

SYSTEM

3.0

SYSTEM DESCRIPTION AND

FUNCTIONAL OPERATION

3.1

GENERAL DESCRIPTION

3.2

FUNCTIONAL OPERATION

3.2.1

TRANSMISSION OPERATION AND

SHIFT SCHEDULING AT VARIOUS

OIL TEMPERATURES

3.2.2

LINE PRESSURE CONTROL

3.2.3

DRIVE LEARN PROCEDURE

3.3

DIAGNOSTIC TROUBLE CODES

3.3.1

HARD CODE

3.3.2

ONE TRIP FAILURES

3.3.3

INTERMITTENT CODE

3.3.4

STARTS SINCE SET COUNTER

3.3.5

TROUBLE CODE ERASURE

3.3.6

LIST OF DIAGNOSTIC TROUBLE CODES (DTC) (Detailed descriptions follow list)

3.3.7

DTC DESCRIPTIONS

3.3.8

QUICK LEARN

3.3.9

CLUTCH VOLUMES

3.4

USING THE DRBIII

T

3.5

DRBIII

T ERROR MESSAGES

3.5.1

DRBIII

T DOES NOT POWER UP

(BLANK SCREEN)

3.5.2

DISPLAY IS NOT VISIBLE

3.5.3

SOME DISPLAY ITEMS READ

(---(

3.6

TRANSMISSION SIMULATOR (MILLER

TOOL # 8333)

4.0

DISCLAIMERS, SAFETY, AND

WARNINGS

4.1

DISCLAIMERS

4.2

SAFETY

4.2.1

TECHNICIAN SAFETY INFORMATION

4.2.2

VEHICLE PREPARATION FOR

TESTING

4.2.3

SERVICING SUB-ASSEMBLIES

4.2.4

DRBIII