SUBARU 4AT, 4AT(diag), 5AT, 5AT(diag) Automatic Transmission, 5MT Manual Transmission, CL Clutch System Service Manual

2004 LEGACY SERVICE MANUAL

TRANSMISSION SECTION

QUICK REFERENCE INDEX

This service manual has been prepared to provide SUBARU service personnel with the necessary information and data for the correct maintenance and repair of SUBARU vehicles.

This manual includes the procedures for maintenance, disassembling, reassembling, inspection and adjustment of components and diagnostics for guidance of experienced mechanics.

Please peruse and utilize this manual fully to ensure complete repair work for satisfying our customers by keeping their vehicle in optimum condition.

When replacement of parts during repair work is needed, be sure to use

SUBARU genuine parts.

CONTROL SYSTEMS

AUTOMATIC TRANSMISSION


(DIAGNOSTICS)



(DIAGNOSTICS)

MANUAL TRANSMISSION AND

DIFFERENTIAL

CLUTCH SYSTEM

CS

4AT

4AT(diag)

5AT

5AT(diag)

5MT

CL

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

FUJI HEAVY INDUSTRIES LTD.

G2320GE5


(DIAGNOSTICS)

5AT(diag)

Page

1.

Basic Diagnostics Procedure ......................................................................2

2.

Check List for Interview...............................................................................4

3.

General Description ....................................................................................5

4.

Electrical Component Location ...................................................................7

5.

Transmission Control Module (TCM) I/O Signal .......................................12

6.

Subaru Select Monitor...............................................................................16

7.

Read Diagnostic Trouble Code (DTC) ......................................................19

8.

Inspection Mode........................................................................................20

9.

Clear Memory Mode..................................................................................21

10.

Learning Control........................................................................................22

11.

SPORT Indicator Light Display .................................................................23

12.

Diagnostic Procedure for Select Monitor Communication.........................26

13.

List of Diagnostic Trouble Code (DTC) .....................................................30

14.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) .....................34

15.

Diagnostic Procedure without Diagnostic Trouble Code (DTC) ..............138

16.

General Diagnostic Table........................................................................147

Basic Diagnostics Procedure

AUTOMATIC TRANSMISSION (DIAGNOSTICS)

1. Basic Diagnostics Procedure

A: PROCEDURE

1

2

3

4

5

Step Check

CHECK PRE-INSPECTION.

1) Ask the customer when and how the trouble occurred using the interview checklist.

<Ref. to 5AT(diag)-4, Check List for Interview.>

2) Before performing diagnosis, inspect the following items which might influence the AT problems.

• General inspection <Ref. to 5AT(diag)-5,

INSPECTION, General Description.>

• Oil Leakage

• Stall speed test <Ref. to 5AT-31, Stall Test.>

• Line Pressure Test <Ref. to 5AT-34, Line

Pressure Test.>

• Transfer Clutch Pressure Test <Ref. to 5AT-

36, Transfer Clutch Pressure Test.>

• Time Lag Test <Ref. to 5AT-33, Time Lag

Test.>

• Road Test <Ref. to 5AT-30, Road Test.>

• Inhibitor Switch <Ref. to 5AT-51, Inhibitor

Switch.>

Is the unit that might influence the AT problem normal?

Yes

Go to step 2.

Go to step 4.

CHECK SPORT INDICATOR LIGHT.

After the ignition switch is turned to “ON”, wait for at least 2 seconds.

Does the SPORT indicator light illuminate?


1) Turn the ignition switch to OFF.

2) Check the SPORT indicator light. <Ref. to

5AT(diag)-24, INSPECTION, SPORT Indicator

Light Display.>

3) After the ignition switch is turned to ON, wait for at least 2 seconds.

Does the SPORT indicator light blink?

CHECK DTC.

Read the DTC. <Ref. to 5AT(diag)-19, OPERA-

TION, Read Diagnostic Trouble Code (DTC).>

Is DTC displayed?

NOTE:

If the communication function of the Subaru Select Monitor cannot be executed normally,

check the communication circuit. <Ref. to

5AT(diag)-26, COMMUNICATION FOR INI-

TIALIZING IMPOSSIBLE, Diagnostic Procedure for Select Monitor Communication.>

PERFORM THE GENERAL DIAGNOSTICS.

1) Inspect using “Diagnostic Procedure with-

out Diagnostic Trouble Code (DTC)”. <Ref. to

5AT(diag)-138, Diagnostic Procedure without

Diagnostic Trouble Code (DTC).>

2) Perform clear memory mode.

3) Perform the inspection mode. <Ref. to

5AT(diag)-20, Inspection Mode.>

4) Display DTC.

Is DTC displayed?

Go to step 4.

Go to step 6.

NOTE:

Record all DTC.

Go to step 6.

No

Repair or replace each item.

Go to step 3.

Go to step 5.

Go to step 5.

Inspect using

“General Diagnos-

tic Table”. <Ref. to

5AT(diag)-147,

General Diagnostic Table.>

5AT(diag)-2

6

Basic Diagnostics Procedure


Step

PERFORM THE DIAGNOSIS.

1) Inspect using the “Diagnostic Procedure

with Diagnostic Trouble Code (DTC)”. <Ref. to

5AT(diag)-34, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

Check

Is DTC displayed?

NOTE:

For DTC table, refer to “List of Diagnostic Trou-

ble Code (DTC)”. <Ref. to 5AT(diag)-30, List of


2) Repair the trouble cause.

3) Perform clear memory mode.

4) Perform the inspection mode. <Ref. to

5AT(diag)-20, Inspection Mode.>

5) Display DTC.

Yes No

Inspect using the

“Diagnostic Procedure with Diagnostic Trouble Code

(DTC)”. <Ref. to

5AT(diag)-34,

Diagnostic Procedure with Diagnostic Trouble Code

(DTC).>

Inspect using

“General Diagnos-

tic Table”. <Ref. to

5AT(diag)-147,

General Diagnostic Table.>

5AT(diag)-3

Check List for Interview


2. Check List for Interview

A: INSPECTION

Check the following items when problem has occurred.

NOTE:

Use copies of this page for interviewing customers.

Customer’s name

Date of sale

Date of repair

Trans. model

Odometer reading

Symptom

Frequency

Weather

Place

Ambient air temperature

Vehicle speed

AT warning light (SPORT indicator light)

Select lever position

Driving condition

Manual mode

TRANSMISSION V.I.N.

km (miles)

❏

No up-shift

❏

No down-shift

❏

No kick down

❏

Vehicle does not move (

❏

Any position

❏

Particular position)

❏

Lock-up malfunction

❏

Noise or vibration

❏

Shift shock or slip

❏

Select lever does not move

(

❏

Others

)

(

❏

Continuous

❏

Intermittent ( times a day)

❏

Fine

❏

Cloudy

❏

Rainy

❏

Snowy

❏

Others

)

(

❏

Highland

❏

Suburbs

❏

Inner city

❏

Uphill

❏

Rough road

❏

Others

)

❏

Hot

❏

Warm

❏

Cool

❏

Cold

❏

Blinks continuously

❏

Not blink

❏

P

❏

R

❏

N

❏

D

❏

Manual mode

❏

Not affected

❏

At racing

❏

When decelerating

❏

❏

❏

At starting

When accelerating

While turning (

❏

RH /

❏

LH)

❏

ON

❏

OFF

❏

While idling

❏

While cruising km/h (MPH)

5AT(diag)-4

3. General Description

A: CAUTION

General Description


• Supplemental Restraint System

The airbag system wiring harness is routed near the TCM.

CAUTION:

• All airbag system wiring harnesses and connectors are colored yellow. Do not use an electric test equipment on these circuits.

• Be careful not to damage the airbag system wiring harness when performing diagnostics and servicing the TCM.

• Measurement

When measuring the voltage and resistance of the

ECM, TCM or each sensor, use a tapered pin with a diameter of less than 0.64 mm (0.025 in) in order to avoid poor contact. Do not insert a pin more than

0.65 mm (0.026 in) diameter.

B: INSPECTION

1. BATTERY

Measure battery voltage and specific gravity of electrolyte.

Standard voltage: 12 V or more

Specific gravity: More than 1.260

2. TRANSMISSION GROUND

Make sure that the ground terminal bolt is tightened securely.

• Chassis side

Tightening torque:

13 N

⋅

m (1.3 kgf-m, 9.4 ft-lb)

3. ATF LEVEL

Make sure that ATF level is in the specification.

<Ref. to 5AT-27, INSPECTION, Automatic Transmission Fluid.>

(A)

(A) Level gauge

(B) Check position when “HOT”

(C) Upper level

(D) Lower level

(E) Check position when “COLD”

(C)

(D)

(E)

4. FRONT DIFFERENTIAL OIL LEVEL

Make sure the front differential oil level is in the specification. <Ref. to 5AT-29, INSPECTION, Differential Gear Oil.>

(A)

(B)

(B)

(C)

(D)

AT-01450

AT-01464

AT-00317

(A) Upper level

(B) Lower level

5. OPERATION OF SHIFT SELECT LEVER

Make sure there is no abnormal noise, dragging or contact pattern in each select lever range.

WARNING:

Stop the engine while checking operation of the select lever.

5AT(diag)-5

General Description


• LHD model • RHD model

AT-02048

C: PREPARATION TOOL

1. SPECIAL TOOL

ILLUSTRATION TOOL NUMBER

24082AA230

DESCRIPTION

CARTRIDGE

REMARKS

Troubleshooting for electrical system.

AT-01465

ST24082AA230

22771AA030 SUBARU SELECT

MONITOR KIT

Troubleshooting for electrical system.

• English: 22771AA030 (Without printer)

• German: 22771AA070 (Without printer)

• French: 22771AA080 (Without printer)

• Spanish: 22771AA090 (Without printer)

ST22771AA030

2. GENERAL TOOL

TOOL NAME

Circuit tester

Oscilloscope

REMARKS

Used for measuring resistance, voltage and current.

Used for measuring sensor.

5AT(diag)-6

Electrical Component Location


4. Electrical Component Location

A: LOCATION

1. CONTROL MODULE

• LHD model

(1)

(3) (4) (2) (5)

(1) Engine control module (ECM)

(2) SPORT indicator light (AT warning light)

(3) Transmission control module

(TCM)

• RHD model

(3) (2) (4) (5)

(4) Data link connector

(5) Body integrated unit

AT-02049

(1)

(1) Engine control module (ECM)

(2) SPORT indicator light (AT warning light)

(3) Transmission control module

(TCM)


(5) Body integrated unit

AT-01467

5AT(diag)-7



• LHD model

(1)

AT-02051

(2)

(4)

(3)

AT-02053

AT-01470

AT-02052

(5)

AT-02054

• RHD model

(1)

AT-01468

(2)

AT-01470

5AT(diag)-8

2. SENSOR

• LHD model

(5)

(3)



(4)

AT-01469 AT-01471

AT-01472

(3) (6),(9) (7)

(5),(8) (1) (2) (4)

5AT(diag)-9

AT-02050



• RHD model

(1) (3) (6),(9) (7)

(1) Accelerator position sensor

(2) Front vehicle speed sensor

(3) Inhibitor switch

(5),(8) (2) (4)

(4) Rear vehicle speed sensor

(5) Turbine speed sensor 1

(6) ATF temperature sensor 1

(7) Lateral G sensor

(8) Turbine speed sensor 2

(9) ATF temperature sensor 2

AT-01443

(2)

(1)

AT-00375

(5)

AT-01447

(4)

(3)

AT-01445 AT-01448

5AT(diag)-10



(7)

(6)

AT-01446

AT-01475

(9)

3. SOLENOID

(8)

AT-01759

(3) (2) (4) (7) (8) (6) (5) (1)

AT-01760

(9)

(1) High & low reverse clutch solenoid (4) Input clutch solenoid

(2) Direct clutch solenoid (5) Line pressure solenoid

(3) Front brake solenoid (6) Lock up solenoid

5AT(diag)-11

(7) Transfer solenoid

(8) Low coast brake solenoid

(9) Memory box

AT-01449

Transmission Control Module (TCM) I/O Signal


5. Transmission Control Module (TCM) I/O Signal

A: ELECTRICAL SPECIFICATION

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23 24

B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

AT-01451

NOTE:

The measurement should perform after warming up.

I/C oil pressure switch input

Item

P/L solenoid output

PVIGN power supply

Power GND

CAN communication line

(+)

CAN communication line

(

−

)

Connector

No.

Termin al

No.

B54

Measuring conditions

9

Engine ON, “P” range,

Accelerator OFF, Brake

ON

Manual mode 1st, Accelerator OFF, Brake ON

8 Ignition switch ON

B54


B54

B54

B54

6

5

4

Always

—

—

Voltage (V)

Measure the resistance between terminal and chassis ground.

Approx. 4.0 —

6.0 V

Approx. 2.0 —

4.0 V

Power supply voltage


3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

—

—

Remarks

Driving frequency 750 —

850 Hz

— —

The condition of I/C oil pressure switch cannot read by the tester.

Approx. 0 V

—

—

—

B54 3 —

ATF temperature sensor

1 input

B54 2 Ignition switch ON

—

2.5 — 2.9 V

(ATF temperature 20

°

C

(68

°

F))

0.8 — 1.0 V

(ATF temperature 80

°

C

(176

°

F))

—

4.0 — 5.0 k

Ω

(ATF temperature 20

°

C

(68

°

F))

0.7 — 0.9 k

Ω

(ATF temperature 80

°

C

(176

°

F))

5AT(diag)-12



Power GND

Analog GND (Sensor

GND)

Item

Battery power supply

I/C solenoid output

H&LR/C solenoid output

Control valve power supply output

LC/B solenoid output

Connector

No.

Termin al

No.

B54

B54

B54

B54

B54

B54

B54

Measuring conditions Voltage (V)

1

18

17

Always

While driving at 1st — 3rd of manual mode

While driving at 4th or 5th of manual mode

While driving at 2nd of manual mode

While driving at 3rd — 5th of manual mode


Approx. 5.5 —

7.5 V

Approx. 0 V

Approx. 5.5 —

7.5 V

Approx. 0 V

16

Ignition switch ON

Ignition switch OFF

While driving at 1st — 2nd of manual mode

15


14 Always


Approx. 0 V


Approx. 0 V

Approx. 0 V

13 Always Approx. 0 V


—

3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

—

5 — 17

Ω

(ATF temperature

25

°

C (77

°

F))

—

—

Remarks


850 Hz


850 Hz

LC/B oil pressure switch input

B54 12 — — —

The condition of LC/B oil pressure switch cannot read by the tester.

ATF temperature sensor

2 input

PVIGN power supply relay output

Fr/B solenoid output

L/U solenoid output

D/C solenoid output

D/C oil pressure switch input

B54

B54

B54

B54

B54

B54


2.3 — 2.7 V

(ATF temperature 20

°

C

(68

°

F))

0.6 — 0.8 V

(ATF temperature 80

°

C

(176

°

F))

0 — 1.5 V 10 Ignition switch ON

24

23

22

While driving at other than

4th of manual mode

While driving at 4th of manual mode

Approx. 4.5 —

6.5 V

Approx. 0 V

When lock-up

When not lock-up

While driving at 1st or 5th of manual mode

While driving at 2nd — 4th of manual mode

Approx. 3.5 —

5.5 V

Approx. 0 V

Approx. 5.5 —

7.5 V

Approx. 0 V

3.0 — 3.6 k

Ω

(ATF temperature 20

°

C

(68

°

F))

0.4 — 0.6 k

Ω

(ATF temperature 80

°

C

(176

°

F))

—

3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

21 — — —


850 Hz


850 Hz


850 Hz

The condition of D/C oil pressure switch cannot read by the tester.

Subaru Select Monitor communication line

B54 20 — — —

5AT(diag)-13



Lateral G sensor power supply

Lateral G sensor signal input

Rear vehicle speed sensor input

Fr/B oil pressure switch input

Turbine speed sensor 1 input

Item

Control GND

H&LR/C oil pressure switch input

Front vehicle speed sensor input

Inhibitor switch 1 input


Accessory power supply

Ignition power supply

Connector

No.

Termin al

No.

B54

B55

B55


19 Always

While driving at 2nd of manual mode

8


7

While driving at 2nd and

20 km/h (12 MPH) of manual mode

While driving at 4th and 80 km/h (50 MPH) of manual mode

Approx. 0 V


Approx. 0 V

Approx. 140 —

170 Hz

Approx. 560 —

680 Hz

B55

B55

B55

B55

B55

B55

B55

B55

B55


5

4

3

2

1

18

17

16

4.75 — 5.25 V

Ignition switch ON, Engine

ON, Flat value

Ignition switch ON, “P” range

Ignition switch ON, “N” range


Ignition switch ON, “D” range

2.0 — 3.0 V

4.0 — 5.0 V

1.5 V or less

4.0 — 5.0 V

1.5 V or less

Accessory switch ON

Accessory switch OFF

Ignition switch ON


Approx. 0 V


Approx. 0 V Ignition switch OFF

While driving at 2nd and

20 km/h (12 MPH) of manual mode

While driving at 4th and 80 km/h (50 MPH) of manual mode


ON, While driving at other than 4th


ON, While driving at 4th

2nd of manual mode, Turbine speed sensor is

2,000 rpm (Read from

Subaru Select Monitor)

4th of manual mode, Turbine speed sensor is



Approx. 190 —

230 Hz

Approx. 760 —

920 Hz

Approx. 0 V


Approx. 0 Hz

Approx. 1,900

— 2,100 Hz


—

—

—

—

—

—

—

—

—

—

—

—

Remarks

Use an oscilloscope.


5AT(diag)-14



Item

Range lock solenoid output



Control valve communication line

Back-up light relay output

Ignition power supply

AWD solenoid output

Turbine speed sensor 2 input

Control GND

Inhibitor switch 3 open circuit monitor input

PN signal output

Connector

No.

Termin al

No.

B55

B55

B55

B55

B55

B55

B55

B55

B55

B55

B55


15

14

13

Ignition switch ON, While stopping at “D” range

About Power

Supply Voltage

−

1.2 V

Ignition switch ON, Vehicle speed at least 20 km/h (12

MPH)

Ignition switch ON, “R” range




Approx. 0 V

4.0 — 5.0 V

1.5 V or less

4.0 — 5.0 V

1.5 V or less

— — 12

11


Ignition switch ON, Other than “R” range

Ignition switch ON

10

Ignition switch OFF

Engine ON, “P” range or

“N” range, Accelerator

OFF

23

Engine ON, “D” range,

Accelerator OFF, Brake

ON

2nd of manual mode, Turbine speed sensor is



22

4th of manual mode, Turbine speed sensor is



21 Always


20


19

Ignition switch ON, Other than “P” range or “N” range

Ignition switch ON, “P” range or “N” range

1.5 V



Approx. 0 V

Approx. 0 V

Approx. 2.0 —

3.0 V

Approx. 1,300

— 1,500 Hz

Approx. 1,900

— 2,100 Hz

Approx. 0 V

4.0 — 5.0 V

Less than 1.5 V


0 — 1.0 V


7 — 21

Ω

—

—

—

Approx. 90 —

110

Ω

(ATF temperature 25

°

C

(77

°

F))

—

3 — 9

Ω

(ATF temperature

20

°

C (68

°

F))

—

—

—

—

—

Remarks


850 Hz



ECM should connected correctly

5AT(diag)-15

Subaru Select Monitor


6. Subaru Select Monitor

A: OPERATION

1. READ DIAGNOSTIC TROUBLE CODE

(DTC)

1) Prepare the Subaru Select Monitor kit.

NOTE:

Do not connect scan tools except for Subaru Select

Monitor.

5) Turn ignition switch to ON (engine OFF) and turn on the Subaru Select Monitor.

(A)

AT-00338

2) Connect the diagnosis cable to Subaru Select

Monitor.

3) Insert the cartridge to Subaru Select Monitor.

<Ref. to 5AT(diag)-6, PREPARATION TOOL, General Description.>

AT-00339

4) Connect the Subaru Select Monitor to data link connector.

(1) Data link connector is located in the lower portion of the instrument panel (on the driver’s side).

(1)

AT-01712


(2) Connect the diagnosis cable to data link connector.

AT-00341

(A) Power switch

6) On the «Main Menu» display screen, select the

{Each System Check} and press the [YES] key.

7) On the «System Selection Menu» display screen, select the {Transmission} and press the

[YES] key.

8) Press the [YES] key after the information of transmission type is displayed.

9) On the «Transmission Diagnosis» display screen, select the {Diagnosis Code(s) Display} and press [YES] key.

NOTE:

• For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERA-

TION MANUAL”.

• For details concerning DTCs, refer to the List of

Diagnostic Trouble Code (DTC). <Ref. to 5AT(diag)-30, List of Diagnostic Trouble Code (DTC).>

2. READ CURRENT DATA




[YES] key.


4) On the «Transmission Diagnosis» display screen, select the {Current Data Display & Save} and press the [YES] key.

5) On the «Transmission Diagnosis» display screen, select the {Data Display} and press the

[YES] key.

6) Using the scroll key, scroll the display screen up or down until the desired data is shown.

5AT(diag)-16



• A list of the support data is shown in the following table.

Item

Engine speed signal

Battery voltage

Accelerator Position Sensor

Front vehicle speed sensor signal

Gear position

Turbine speed sensor signal

Rear vehicle speed sensor signal

Lateral G sensor

ATF Temperature Sensor 1 Signal

ATF Temperature Sensor 2 Signal

Turbine speed sensor 1 signal

Turbine speed sensor 2 signal

High & Low Reverse Clutch Solenoid Indicator Current

Direct Clutch Solenoid Indicator Current

Front Brake Solenoid Indicator Current

Input Clutch Solenoid Indicator Current

Line Pressure Solenoid Indicator Current

Lock-up Solenoid Indicator Current

Transfer Solenoid Indicator Current

High & Low Reverse Clutch Solenoid Target Oil Pressure

Direct Clutch Solenoid Target Oil Pressure

Front Brake Solenoid Target Oil Pressure

Input Clutch Solenoid Target Oil Pressure

Line Pressure Solenoid Target Oil Pressure

Lock-up Solenoid Target Oil Pressure

Transfer Solenoid Target Oil Pressure

Ignition switch

Tip signal

Cruise control On signal

Tip Down Shift Signal

Stop light switch signal

Tip Up Shift Signal

Drive range signal

Reverse range signal

Diagnosis Light Output Signal

Shift lock solenoid signal

Parking range signal

P/N Range Output Signal

Neutral range signal

Inhibitor Switch 1 Input Signal




Inhibitor Switch 3 Monitor Input Signal

Backup light relay output signal

High & Low Reverse Clutch Oil Pressure Switch Input Signal

Direct Clutch Oil Pressure Switch Input Signal

Front Brake Oil Pressure Switch Input Signal

Input Clutch Oil Pressure Switch Input Signal

Display

Engine speed

Battery Voltage

Acceleration opening angle

Front Wheel Speed

Gear Position

Turbine Revolution Speed

Rear Wheel Speed

Lateral G sensor

ATF Temp.

ATF Temp. 2

Turbine Revolution Speed 1

Turbine Revolution Speed 2

H&LR/C Solenoid Current

D/C Solenoid Current

F/B Solenoid Current

I/C Solenoid Current

P/L Solenoid Current

L/U Solenoid Current

AWD Solenoid Current

H&LR/C Solenoid Target Pressure

D/C Solenoid Target Pressure

F/B Solenoid Target Pressure

I/C Solenoid Target Pressure

P/L Solenoid Target Pressure

L/U Solenoid Target Pressure

AWD Solenoid Target Pressure

Ignition SW

Tip Mode SW

Cruise Control Signal

Down SW

Stop Light SW

Up SW

D Range

R Range

Diagnosis Lamp

Shift lock solenoid

P range

P/N Signal

N range

Inhibitor SW1

Inhibitor SW2

Inhibitor SW3

Inhibitor SW4

Inhibitor SW3 Monitor

Back-up light relay

H&LR/C Oil Pressure SW

D/C Oil Pressure SW

Fr/B Oil Pressure SW

I/C Oil Pressure SW

Unit of measure rpm

V

% km/h

— rpm km/h

V

°

C

°

C rpm rpm

A

A

A

A

A

A

A kPa kPa kPa kPa kPa kPa kPa

ON Input or OFF Input

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

High or Low

High or Low

High or Low

High or Low

High or Low

ON or OFF

ON or OFF

ON or OFF

ON or OFF

ON or OFF

5AT(diag)-17



Item

Low Coast Brake Oil Pressure Switch Input Signal

Low Coast Brake Solenoid Input Signal

NOTE:

For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION

MANUAL”.

3. CLEAR MEMORY MODE

NOTE:

To clear the previous DTC, use {Clear Memory}, and to clear the learned value, use {Clear Memory

2}.

1) Check that the select lever is in “P” range.




[YES] key.


5) On the «Transmission Diagnosis» display screen, select the {Clear Memory} and press the

[YES] key.

NOTE:

If {Clear Memory 2} is selected and performed,

DTC may not be cleared.

6) When the ‘Done’ are shown on the display screen, turn off the Subaru Select Monitor and turn the ignition switch to OFF. To turn the ignition switch ON again, wait for more than 10 seconds.

NOTE:

For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION

MANUAL”.

Display

LC/B Oil Pressure SW

LC B Solenoid

Unit of measure

ON or OFF

ON or OFF

5AT(diag)-18

Read Diagnostic Trouble Code (DTC)


7. Read Diagnostic Trouble

Code (DTC)

A: OPERATION

Refer to “Subaru Select Monitor” for information about how to obtain and understand the DTC.

<Ref. to 5AT(diag)-16, OPERATION, Subaru Select Monitor.>

NOTE:

DTC can not be read by SPORT indicator light.

5AT(diag)-19

Inspection Mode


8. Inspection Mode

A: PROCEDURE

WARNING:

Observe the traffic law during actual driving.

1) Shift the select lever to “D” range, and then drive the vehicle with changing the gear from 1st to 5th.

2) When driving the vehicle at 5th speed of “D” range, set the gear to manual mode and drive the vehicle with shifting down using “

−

” of steering switch or “

−

” of select lever from 5th

→

4th, 4th

→

3rd, 3rd

→

2nd, 2nd

→

1st.

NOTE:

At shifting down, drive the vehicle at least 10 seconds in each speed.

3) Shift the select lever to “R” range and drive the vehicle for more than 2 seconds.

5AT(diag)-20

Clear Memory Mode


9. Clear Memory Mode

A: OPERATION

Use “Subaru Select Monitor” to clear DTC. <Ref. to

5AT(diag)-18, CLEAR MEMORY MODE, OPERA-

TION, Subaru Select Monitor.>

NOTE:

DTC cannot be cleared without using Subaru Select Monitor.

5AT(diag)-21

Learning Control


10.Learning Control

A: GENERAL DESCRIPTION

Be sure to perform the {Clear Memory 2} only when the following services are performed. And when the shifting shock is occurred in total check with vehicle driving, perform the learning with following proce-

dures. <Ref. to 5AT(diag)-18, CLEAR MEMORY

MODE, OPERATION, Subaru Select Monitor.>

• Replacement of TCM

• Replacement of transmission assembly

• Replacement of TCM and transmission assembly

CAUTION:

When {Clear Memory 2} is executed, DTC may not be cleared.

B: PROCEDURE


2) Turn the air conditioner switch to OFF.

3) Turn the headlight switch to OFF.

4) Turn the rear defogger switch to OFF.

5) Start the engine.

6) Connect the Subaru Select Monitor to the vehicle.

7) Drive the vehicle for 5 — 10 km (3 — 6 miles) to warm up ATF temperature more than 70

°

C (158

°

F).

8) With the throttle opening angle on SUBARU select monitor indicates between 10%

±

2%, shift the gear from 1st

→

2nd, 2nd

→

3rd, 3rd

→

4th, 4th

→

5th while driving the vehicle at “D” range. <Ref. to

5AT(diag)-16, READ CURRENT DATA, OPERA-

TION, Subaru Select Monitor.>

9) Repeat the step 8) until reducing of shifting shock was felt.

10) Reducing of shifting shock was not felt though the procedure was repeated 5 cycle, recheck that the learning conditions (throttle opening angle, ATF temperature, etc.) are specified and recheck that other parts are normal.

5AT(diag)-22

SPORT Indicator Light Display


11.SPORT Indicator Light Display

A: OPERATION

When any on-board diagnostics item is malfunctioning, the display on the SPORT indicator light blinks from the time the malfunction is detected after starting the engine until the ignition switch is turned OFF. The malfunctioning part or unit can be determined by a DTC during the on-board diagnostics operation. Problems which occurred previously can also be identified through the memory function. If the SPORT indicator light does not show a problem (although a problem is occurring), the problem can be determined by checking the performance characteristics of each sensor using the Subaru Select Monitor. Indicator light signal is as shown in the figure.

When the SPORT indicator light does not operates normally though the DTC is not stored, perform the

SPORT indicator light inspection. <Ref. to 5AT(diag)-24, INSPECTION, SPORT Indicator Light Display.>

(A)

(B)

(C)

(1)

(2)

(1)

(2)

(1)

(2)

(3)

(3)

(4)

(A) Ignition switch (Engine OFF)

(1) ON

(2) OFF

(B) Normal (Engine ON)

(3) 2 sec.

(4) 0.25 sec.

(5)

(C) Faulty (Engine ON)

(5) Blink

AT-01750

5AT(diag)-23



B: INSPECTION

DIAGNOSIS:

SPORT indicator light circuit is open or shorted.

TROUBLE SYMPTOM:

When the ignition switch is turned to ON (engine OFF), SPORT indicator light does not illuminate.

WIRING DIAGRAM:

E

SBF-1 SBF-7

IGNITION

SWITCH

SPORT

COMBINATION

METER i10

JOINT

CONNECTOR i77

B: B280 A: i84 BODY INTEGRATED UNIT i10

1 2 3 4 5

11 12 13 14 15 16

6 7 8 9 10

17 18 19 20 21 22

i77

1 2 3 4 5 6 7 8 9 10 11 12

A: i84

1

9

2

24 25

3 4

26 27 28 29

5 6

30 31 32 33

7 8

10 11 12 13 14 15 16 17 18 19 20 21 22 23

34 35

B: B280

1 2 3 4 5 6 7

8 9 10 11 12 13

21 22 23 24 25

14 15 16

26 27

17 18 19 20

28 29 30

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B54 TCM

AT-01452

5AT(diag)-24

1

2

3

4

5

6

7

8



Step


Turn the ignition switch to ON.

Check


Yes

Go to step 2.

No

Perform the selfdiagnosis of combination meter.


After the ignition switch is “ON”, wait for at least

2 seconds.



Start the engine.

Does the SPORT indicator light go off?

Go to step 3. Go to step 4.

Normal. Go back to “Basic Diagnosis Procedure”.

<Ref. to 5AT(diag)-

2, Basic Diagnostics Procedure.>

Go to step 7.

CHECK SUBARU SELECT MONITOR COM-

MUNICATION.

Connect the Subaru Select Monitor to data link connector.

Is the communication between

Subaru Select Monitor and

TCM normal?

Go to step 5.

Check the TCM power supply ground circuit and

Subaru Select

Monitor communi-

cation. <Ref. to

5AT(diag)-26,

Diagnostic Procedure for Select

Monitor Communication.>

CHECK TCM.

Display the current data of TCM using Subaru

Select Monitor.

Is “Diagnosis light” output signal set to “ON”?

CHECK BODY INTEGRATED UNIT.

Display the current data of body integrated unit using Subaru Select Monitor. <Ref. to

LAN(diag)-14, OPERATION, Subaru Select

Monitor.>

CHECK TCM.


2) Display the current data of TCM using Sub-

aru Select Monitor. <Ref. to 5AT(diag)-16,

OPERATION, Subaru Select Monitor.>


Display the current data of body integrated unit using Subaru Select Monitor. <Ref. to

LAN(diag)-14, OPERATION, Subaru Select

Monitor.>

Is “SPORT light” input signal set to “ON”?

Is “Diagnosis light” output signal set to “ON”?

Is “SPORT light” input signal set to “ON”?

Go to step 6.

Replace the TCM.

<Ref. to 5AT-61,

Transmission Control Module

(TCM).>

Replace the combination meter assembly. <Ref. to

IDI-16, Combination Meter Assembly.>

Check DTC of body integrated unit. <Ref. to

LAN(diag)-14,

OPERATION,

Subaru Select

Monitor.>

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Go to step 8.

Check DTC of body integrated unit. Perform the diagnosis according to DTC. <Ref. to LAN(diag)-14,

OPERATION,

Subaru Select

Monitor.>

Perform the selfdiagnosis for combination meter.

<Ref. to IDI-3,

INSPECTION,

Combination

Meter System.>

5AT(diag)-25

Diagnostic Procedure for Select Monitor Communication


12.Diagnostic Procedure for Select Monitor Communication

A: COMMUNICATION FOR INITIALIZING IMPOSSIBLE

DIAGNOSIS:

Faulty harness connector


Subaru Select Monitor communication failure

WIRING DIAGRAM:

BATTERY

No.13

B357

IGNITION

SWITCH

ACCESSORY

SWITCH

E

B21

E2

1

10

12

13

DATA LINK

CONNECTOR

B40

A: B54 B: B55 TCM

E

B21

1 2 3 4

5 6 7 8

9 10 11 12

13 14 15 16

E E

TRANSMISSION

B40

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

5AT(diag)-26

AT-01453

1

2

3

4

5

6

7

8



Step

CHECK SUBARU SELECT MONITOR POW-

ER SUPPLY CIRCUIT.

Measure the voltage between data link connector and chassis ground.

Connector & terminal

(B40) No. 1 (+) — Chassis ground (

−

):

CHECK SUBARU SELECT MONITOR

GROUND CIRCUIT.

Measure the resistance of harness between data link connector and chassis ground.


(B40) No. 12 — Chassis ground:


Check Yes

Is the voltage more than 10 V? Go to step 2.

Is the resistance less than 1

Ω

?

Go to step 3.

No

Repair harness connector and connector between battery and data link connector, and poor contact in coupling connector.

Repair the open circuit in harness between data link connector and ground terminal, and poor contact in coupling connector.

Go to step 4.

CHECK COMMUNICATION OF SUBARU SE-

LECT MONITOR.

1) Turn the ignition switch to ON.

2) Using the Subaru Select Monitor, check whether communication to transmission systems can be executed normally.

Are the name and year of system displayed on Subaru

Select Monitor?


LECT MONITOR.


2) Disconnect the TCM connector.


4) Check whether communication to engine systems can be executed normally.


Select Monitor?


LECT MONITOR.


2) Connect the TCM connector.

3) Disconnect the ECM connector.


5) Check whether communication to transmission systems can be executed normally.


Select Monitor?

Go to step 8.


Inspect the ECM.

Go to step 6.

CHECK HARNESS CONNECTOR BETWEEN

EACH CONTROL UNIT AND DATA LINK

CONNECTOR.


2) Disconnect the TCM and ECM connector.

3) Measure the resistance between TCM connector and chassis ground.



Is the resistance more than 1

M

Ω

?

CHECK OUTPUT SIGNAL OF TCM.


2) Measure the voltage between TCM and chassis ground.



−

):

Go to step 7.

Check harness and connector between each control unit and data link connector.

Is the voltage more than 1 V?

Check harness and connector between each control unit and data link connector.

Go to step 8.


TCM AND DATA LINK CONNECTOR.

Measure the resistance between TCM connector and data link connector.


(B54) No. 20 — (B40) No. 10:


Ω

?

Go to step 9.

Repair the harness and connector between TCM and data link connector.

5AT(diag)-27



9

10

11

12

13

14

15

16

Step

CHECK INSTALLATION OF TCM CONNEC-

TOR.

Turn the ignition switch to OFF.

Is TCM connector connected to TCM?

Check

CHECK INSTALLATION OF TRANSMISSION

HARNESS CONNECTOR.

Is the transmission harness connector connected to bulkhead harness connector?

Yes

Go to step 10.

Go to step 11.

No

Connect the TCM connector to TCM.

Connect the bulkhead harness connector to transmission harness connector.

Go to step 12.

CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in control unit power supply and data link connector?

Repair the poor contact.

CHECK POWER SUPPLY OF TCM.

1) Disconnect the connector from TCM.


3) Measure the voltage between TCM connector and chassis ground.



−

):

Is the voltage 10 — 13 V?

Go to step 15. Go to step 13.

CHECK FUSE (No. 32).


2) Remove the fuse (No. 32).

CHECK HARNESS.

Measure the resistance between TCM connector and chassis ground.



Is the fuse (No. 32) blown out? Go to step 14.


Ω

?


Repair the open circuit in harness between fuse (No.

32) and TCM, or fuse (No. 32) and battery, and poor contact in coupling connector.

Replace the fuse

(No. 32). If the replaced fuse (No.

32) has blown out easily, repair the short circuit in harness between fuse

(No. 32) and TCM.

Replace the fuse

(No. 32).

Go to step 17.

Go to step 16.

CHECK IGNITION POWER SUPPLY CIR-

CUIT.

1) Turn the ignition switch to ON (engine

OFF).

2) Measure the ignition power supply voltage between TCM connector and chassis ground.



−

):


−

):


Remove the fuse (No. 12).

Is the fuse (No. 12) blown out? Replace the fuse



(No. 12) and TCM.

Repair the open circuit in harness between fuse (No.

12) and TCM, or fuse (No. 12) and battery, and poor contact in coupling connector.

5AT(diag)-28

17

18



Step Check


TCM AND TRANSMISSION.


2) Disconnect the connectors from TCM and transmission.

3) Measure the resistance of harness between TCM and transmission connector.







M

Ω

?

Yes

Go to step 18.

CHECK POOR CONTACT IN CONNECTORS. Is there poor contact in TCM power supply, ground and data link connector?

Repair the connector.

No

Repair the short circuit in harness between TCM and transmission harness connector, and poor contact in coupling connector.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-29

List of Diagnostic Trouble Code (DTC)


13.List of Diagnostic Trouble Code (DTC)

A: LIST

DTC

P0705

P0712

P0713

P0715

P0719

P0720

P0724

P0725

P0731

P0732

P0733

P0734

P0735

P0736

P0741

Transmission Range

Sensor Circuit (PRNDL

Input)

Transmission Fluid Temperature Sensor Circuit

Low Input

Transmission Fluid Temperature Sensor Circuit

High Input

Item

Input/Turbine Speed

Sensor Circuit

Content of diagnosis

Inhibitor switch 1 malfunction, open or short circuit

ATF temperature sensor 1 malfunction, open input signal circuit

ATF temperature sensor 1 malfunction, short input signal circuit

Turbine speed sensor 1 malfunction, short input signal circuit

Reference target

<Ref. to 5AT(diag)-34, DTC P0705 TRANS-

MISSION RANGE SENSOR CIRCUIT (PRNDL

INPUT), Diagnostic Procedure with Diagnostic

Trouble Code (DTC).>


MISSION FLUID TEMPERATURE SENSOR

CIRCUIT LOW INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


MISSION FLUID TEMPERATURE SENSOR

CIRCUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-45, DTC P0715 INPUT/

TURBINE SPEED SENSOR CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code

(DTC).>

<Ref. to 5AT(diag)-49, DTC P0719 TORQUE

CONVERTER/BRAKE SWITCH “B” CIRCUIT

LOW, Diagnostic Procedure with Diagnostic


Torque Converter/Brake

Switch “B” Circuit Low

Output Speed Sensor

Circuit

Torque Converter/Brake

Switch “B” Circuit High

Engine Speed Input Circuit

Brake switch malfunction, open input signal circuit, body integrated unit malfunction, CAN communication malfunction

Front wheel speed sensor is faulty or input signal circuit, ground, power supply is open or shorted.

Brake switch malfunction, short circuit of input signal, body integrated unit malfunction, CAN communication malfunction

Open or short engine speed output signal circuit, ECM malfunction, CAN communication malfunction

Vehicle sensor, turbine speed sensor, control valve malfunction or shift clutch malfunction

Vehicle sensor, turbine speed sensor, control valve malfunction or shift clutch malfunction

<Ref. to 5AT(diag)-51, DTC P0720 OUTPUT

SPEED SENSOR CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


CONVERTER/BRAKE SWITCH “B” CIRCUIT

HIGH, Diagnostic Procedure with Diagnostic


<Ref. to 5AT(diag)-58, DTC P0725 ENGINE

SPEED INPUT CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

Gear 1 Incorrect Ratio





Reverse Incorrect Ratio

Vehicle sensor, turbine speed sensor, or shift clutch malfunction




Torque Converter Clutch

Circuit Performance or

Stuck Off

Lock-up clutch is faulty or valve is stuck.

<Ref. to 5AT(diag)-58, DTC P0731 GEAR 1

INCORRECT RATIO, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>









<Ref. to 5AT(diag)-59, DTC P0736 REVERSE



CONVERTER CLUTCH CIRCUIT PERFOR-

MANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

5AT(diag)-30

DTC

P0743

P0748

P0751

P0753

P0756

P0758

P0761

P0763

P0766

P0768

P0771

P0773

P0801

P0817

P0882



Torque Converter Clutch

Circuit Electrical

Pressure Control Solenoid “A” Electrical

Shift Solenoid “A” Performance or Stuck Off

Shift Solenoid “A” Electrical

Shift Solenoid “B” Performance or Stuck Off

Shift Solenoid “B” Electrical

Shift Solenoid “C” Performance or Stuck Off

Shift Solenoid “C” Electrical trical trical

Circuit

Item

Shift Solenoid “D” Performance or Stuck Off

Shift Solenoid “D” Elec-

Shift Solenoid “E” Performance or Stuck Off

Shift Solenoid “E” Elec-

Reverse Inhibit Control

Starter Disable Circuit

PVIGN Power Supply

Circuit (Low)


L/U solenoid circuit malfunction or L/U solenoid body malfunction

Line pressure solenoid circuit malfunction or line pressure solenoid body malfunction

Shift Solenoid “A” performance malfunction

Fr/B solenoid circuit malfunction or Fr/B solenoid body malfunction

Shift Solenoid “B” Performance malfunction

I/C solenoid circuit malfunction or

I/C solenoid body malfunction

H&LR/C solenoid malfunction

H&LR/C solenoid circuit malfunction or H&LR/C solenoid body malfunction

D/C solenoid malfunction

D/C solenoid circuit malfunction or D/C solenoid body malfunction

LC/B solenoid malfunction

Reference target


CONVERTER CLUTCH CIRCUIT ELECTRI-

CAL, Diagnostic Procedure with Diagnostic


<Ref. to 5AT(diag)-63, DTC P0748 PRES-

SURE CONTROL SOLENOID “A” ELECTRI-

CAL, Diagnostic Procedure with Diagnostic


<Ref. to 5AT(diag)-65, DTC P0751 SHIFT

SOLENOID “A” PERFORMANCE OR STUCK

OFF, Diagnostic Procedure with Diagnostic



SOLENOID “A” ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


SOLENOID “B” PERFORMANCE OR STUCK




SOLENOID “B” ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


SOLENOID “C” PERFORMANCE OR STUCK




SOLENOID “C” ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


SOLENOID “D” PERFORMANCE OR STUCK




SOLENOID “D” ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


SOLENOID “E” PERFORMANCE OR STUCK



• LC/B solenoid circuit malfunction or LC/B solenoid body malfunction

• OFF malfunction of PVIGN relay circuit or relay body

• Shift lock solenoid is faulty or output signal circuit is open or shorted.

• Brown out of TCM+B fuse

• PN signal output circuit is open or shorted.

• ECM Source Voltage Is Abnormal

• Brown out of TCM+B fuse

PVIGN relay output circuit is open, shorted or relay malfunction


SOLENOID “E” ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-97, DTC P0801 REVERSE

INHIBIT CONTROL CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-100, DTC P0817 STARTER

DISABLE CIRCUIT, Diagnostic Procedure with


<Ref. to 5AT(diag)-102, DTC P0882 TCM

POWER INPUT SIGNAL LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

5AT(diag)-31



DTC

P0957

P0958

P1601

P1706

P1707

P1710

P1716

P1717

P1718

P1760

P1761

P1762

P1798

P1799

P1817

Backup Light Relay Circuit Low

Backup Light Relay Circuit High

TCM Communication

Malfunction

AT Vehicle Speed Sensor Circuit Malfunction

(Rear Wheel)

AT AWD Solenoid Valve

Circuit Malfunction

Torque Converter Turbine 2 Speed Signal Circuit 2 Malfunction

ATF Temp. Sensor 2 Circuit Low

ATF Temp. Sensor 2 Circuit High

Lateral Acceleration

Sensor Performance

Problem

Interlock

Item

AT CAN Communication

Circuit


Sensor Circuit Low


Sensor Circuit High

Gear 1 Engine Brake

SPORTS Mode Switch

Circuit (Manual Switch)


Back-up relay output circuit is open, shorted or relay OFF malfunction

Back-up relay output circuit is open, shorted or relay ON malfunction

Communication Failure between

TCM and Memory Box

Rear wheel speed sensor is faulty or input circuit, ground, power supply is open or shorted.

AWD solenoid circuit malfunction or AWD solenoid body malfunction

Torque converter sensor 2 malfunction, input circuit, ground, power open, short circuit

ATF temperature sensor 2 malfunction, open input signal circuit

ATF temperature sensor 2 malfunction, short input signal circuit

Reference target

<Ref. to 5AT(diag)-104, DTC P0957 BACKUP

LIGHT RELAY CIRCUIT LOW, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-106, DTC P0958 BACKUP

LIGHT RELAY CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-108, DTC P1601 TCM

COMMUNICATION MALFUNCTION, Diagnostic Procedure with Diagnostic Trouble Code

(DTC).>

<Ref. to 5AT(diag)-110, DTC P1706 AT VEHI-

CLE SPEED SENSOR CIRCUIT MALFUNC-

TION (REAR WHEEL), Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-114, DTC P1707 AT AWD

SOLENOID VALVE CIRCUIT MALFUNC-

TION, Diagnostic Procedure with Diagnostic



CONVERTER TURBINE 2 SPEED SIGNAL

CIRCUIT 2 MALFUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

<Ref. to 5AT(diag)-120, DTC P1716 ATF

TEMP. SENSOR 2 CIRCUIT LOW, Diagnostic

Procedure with Diagnostic Trouble Code

(DTC).>

<Ref. to 5AT(diag)-123, DTC P1717 ATF

TEMP. SENSOR 2 CIRCUIT HIGH, Diagnostic

Procedure with Diagnostic Trouble Code

(DTC).>

CAN communication line bus off is open, EUM short circuit, ABS/

VDCCM, integrated CU malfunction

<Ref. to 5AT(diag)-125, DTC P1718 AT CAN

COMMUNICATION CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

Lateral G sensor malfunction

Lateral G sensor is faulty or input signal circuit is open.

Lateral G sensor is faulty or input signal circuit is shorted.

Malfunction of clutch oil pressure related to 1st engine brake, solenoid current malfunction

Malfunction of clutch oil pressure which emit interlock, solenoid current malfunction

Manual mode switch is open or shorted, or switch malfunction

<Ref. to 5AT(diag)-126, DTC P1760 LATERAL

ACCELERATION SENSOR PERFORMANCE

PROBLEM, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>


ACCELERATION SENSOR CIRCUIT LOW,

Diagnostic Procedure with Diagnostic Trouble

Code (DTC).>


ACCELERATION SENSOR CIRCUIT HIGH,

Diagnostic Procedure with Diagnostic Trouble

Code (DTC).>


ENGINE BRAKE, Diagnostic Procedure with


<Ref. to 5AT(diag)-134, DTC P1799 INTER-

LOCK, Diagnostic Procedure with Diagnostic


<Ref. to 5AT(diag)-135, DTC P1817 SPORTS

MODE SWITCH CIRCUIT (MANUAL

SWITCH), Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

5AT(diag)-32

DTC

P1840

P1841

P1842

P1843

P1844



Item

Transmission Fluid Pressure Sensor/Switch A

Circuit

Transmission Fluid Pressure Sensor/Switch B

Circuit

Transmission Fluid Pressure Sensor/Switch C

Circuit

Transmission Fluid Pressure Sensor/Switch D

Circuit

Transmission Fluid Pressure Sensor/Switch E

Circuit


H&LR/C oil pressure switch is open or shorted, or switch malfunction

D/C oil pressure switch is open or shorted, or switch malfunction

Fr/B oil pressure switch is open or shorted, or switch malfunction

I/C oil pressure switch is open or shorted, or switch malfunction

LC/B oil pressure switch is open or shorted, or switch malfunction

Reference target


MISSION FLUID PRESSURE SENSOR/

SWITCH A CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>



SWITCH B CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>



SWITCH C CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>



SWITCH D CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>



SWITCH E CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

5AT(diag)-33

Diagnostic Procedure with Diagnostic Trouble Code (DTC)


14.Diagnostic Procedure with Diagnostic Trouble Code (DTC)

A: DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT (PRNDL INPUT)

DTC DETECTING CONDITION:

The inhibitor switch is open or short.


• Shift characteristics are erroneous.

• Shift indicator light does not match with select lever.

• Shift indicator light does not illuminate.

• N-D, N-R shock occur.

5AT(diag)-34



WIRING DIAGRAM:

SBF-1 SBF-7 No.12

i10

1 2 3 4 5

11 12 13 14 15 16

6 7 8 9 10

17 18 19 20 21 22

COMBINATION

METER i10

P R N D

E i77

1 2 3 4 5 6 7 8 9 10 11 12

JOINT

CONNECTOR i77

A: i84

1

9

2

24 25

3 4

26 27 28 29

5 6

30 31 32 33

7 8

10 11 12 13 14 15 16 17 18 19 20 21 22 23

34 35

BODY INTEGRATED UNIT

A: i84

B: B280

B: B280

1

8

2

9

3

21 22 23 24 25

4 5 6 7

10 11 12 13 14 15 16 17 18 19 20

26 27 28 29 30

B12

T3

A: B54 B: B55 TCM

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B: B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B12

1 2 3 4

5 6 7 8

TRANSMISSION

E

AT-02073

5AT(diag)-35

2

3



1

4

5

6

7

Step

CHECK DTC OF TCM.

Check Yes

Is DTC of AT CAN communication circuit displayed?

Perform the diagnosis according to

DTC.

No

Go to step 2.


PREPARE SUBARU SELECT MONITOR.

Do you have a Subaru Select

Monitor?

CHECK INHIBITOR SWITCH.

1) Shift the select lever to “P” range.

2) Check input signal of inhibitor SW 1 — 4 and inhibitor SW 3 monitor using Subaru

Select Monitor.

Are all indications High?





3) Measure the resistance between TCM connector and chassis ground about the item which indicated Low on step 3.








M

Ω

?


1) Shift the select lever to “D” range.

2) Check input signal of inhibitor SW 1 — 4 and inhibitor SW 3 monitor using Subaru

Select Monitor.

Are all indications High?

Go to step 5.

Go to step 9.

Go to step 9.

Go to step 4.

Repair the short circuit in harness between TCM connector and chassis ground.

Go to step 6.





3) Measure the resistance of harness between TCM and transmission connector about the item which indicated High on step 5.


(B55) No. 4 — (B12) No. 4:

(B55) No. 3 — (B12) No. 3:

(B55) No. 14 — (B12) No. 2:

(B55) No. 13 — (B12) No. 1:

(B55) No. 20 — (B12) No. 8:


Ω

?







(B55) No. 4 — (B12) No. 4:

(B55) No. 3 — (B12) No. 3:

(B55) No. 14 — (B12) No. 2:

(B55) No. 13 — (B12) No. 1:

(B55) No. 20 — (B12) No. 8:


Ω

?

Go to step 9.

Go to step 8.

Repair the open circuit in harness between TCM connector and transmission connector.


5AT(diag)-36

8

9

10

11



Step

CHECK INPUT SIGNAL FOR TCM USING

CIRCUIT TESTER.


2) Disconnect the transmission connector

(B12).

3) Connect the TCM connector.


5) Measure the voltage between TCM terminals.


(B55) No. 4 — (B54) No. 19:

(B55) No. 3 — (B54) No. 19:

(B55) No. 14 — (B54) No. 19:

(B55) No. 13 — (B54) No. 19:

(B55) No. 20 — (B54) No. 19:

Check











M

Ω

?

Is the voltage 4 — 6 V for the inhibitor SW 1 — 4?

Is the voltage 3.5 — 5.5 V for the inhibitor SW 3 monitor?

CHECK TCM I/O SIGNAL.

Check I/O signal of power supply, ground and

PVIGN power supply relay.

<Ref. to 5AT(diag)-12, ELECTRICAL SPECIFI-

CATION, Transmission Control Module (TCM)

I/O Signal.>

Is TCM I/O signal OK?

Yes

Go to step 9.

Go to step 11.

No

Repair the short circuit in harness between TCM connector and chassis ground.

Go to step 10.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Repair the open or short circuit for power supply and ground. Perform the diagnosis according to DTC for PVIGN power supply relay.

Go to step 12.

Repair the open circuit in harness between control valve body connector and transmission connector.


TRANSMISSION AND CONTROL VALVE

BODY.


2) Disconnect the connector from transmission.

3) Remove the transmission connector from bracket.

4) Lift-up the vehicle and place it on rigid racks.


Ω

?

NOTE:

Raise all wheels off floor.

5) Drain the ATF.

CAUTION:

Do not drain the ATF until it cools down.

6) Remove the oil pan, and disconnect the connector from control valve body connector.

7) Measure the resistance between transmission connector and control valve body connector.


(T3) No. 4 — (T5) No. 6:

(T3) No. 3 — (T5) No. 5:

(T3) No. 2 — (T5) No. 4:

(T3) No. 1 — (T5) No. 3:

(T3) No. 8 — (T5) No. 2:

5AT(diag)-37



12

13

Step Check



BODY.

Measure the resistance between transmission ground and control valve body connector.


(T5) No. 6 — Transmission ground:






M

Ω

?

CHECK POOR CONTACT.

Yes

Go to step 13.

Is there any poor contact in inhibitor SW 1 — 4 or inhibitor

SW 3 monitor circuit?


No

Repair the short circuit in harness between control valve body connector and transmission connector.

Replace the control valve body.

<Ref. to 5AT-58,

Control Valve

Body.>

5AT(diag)-38



B: DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT LOW

INPUT


Input signal circuit of TCM to ATF temperature sensor 1 is opened.


Excessive shift shock.

WIRING DIAGRAM:

B54

TCM

B11

T4

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

TRANSMISSION

T5

AT-02037

5AT(diag)-39

4

5



1

2

3

Step Check







(B54) No. 13 — (B11) No. 12:

(B54) No. 2 — (B11) No. 5:


Ω

?

Yes

Go to step 2.

No

Repair the open circuit in harness between TCM and transmission connector.

CHECK ATF TEMPERATURE SENSOR.


2) Connect the connectors to transmission and TCM.

3) Turn the ignition switch to ON and start engine.

4) Warm-up the transmission until the ATF temperature reaches to 80

°

C (176

°

F).

NOTE:

If the ambient temperature is below 0

°

C (32

°

F), drive the vehicle until the ATF reaches its operating temperature.

Is the resistance 500 — 1,200

Ω

?


6) Measure the resistance between transmission connector terminals.


(T4) No. 5 — (T4) No. 12:


Measure the resistance between transmission connector terminals.


(T4) No. 5 — (T4) No. 12:

3) Measure the voltage between TCM connector terminals.


(B54) No. 2 (+) — (B54) No. 13 (

−

):

Does the resistance value increase while the ATF temperature decreases?

Go to step 4.


CHECK INPUT SIGNAL FROM TCM.

1) Connect the connector to transmission.

2) Warm-up the transmission until the ATF temperature is approx. 80

°

C (176

°

F).

NOTE:


°

C (32

°



Monitor?

Is the voltage 0.5 — 1.2 V?

Go to step 3.

Go to step 6.

Even if the SPORT indicator lights blinks, the system is in normal condition. A temporary poor contact of connector or harness may be the cause. Repair the poor contact of harness between

ATF temperature sensor and transmission connector.

Go to step 7.

Go to step 7.

Go to step 5.

Go to step 8.

5AT(diag)-40

6

7

8



Step


SUBARU SELECT MONITOR.

1) Connect the connector.


OFF).

3) Read the ATF temperature using Subaru

Select Monitor.

Check

Does the ATF temperature gradually decrease?



BODY.






Ω

?

NOTE:


5) Drain the ATF.

CAUTION:





(T4) No. 12 — (T5) No. 1:

(T4) No. 5 — (T5) No. 16:


Is there poor contact in ATF temperature sensor circuit 1?

Yes No



Go to step 8.


<Ref. to 5AT-58,

Control Valve

Body.>



Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-41



C: DTC P0713 TRANSMISSION FLUID TEMPERATURE SENSOR CIRCUIT HIGH

INPUT


Input signal circuit of TCM to ATF temperature sensor 1 is shorted.



WIRING DIAGRAM:

B54

TCM

B11

T4

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

TRANSMISSION

T5

AT-02037

5AT(diag)-42

1

2

3

4

5



Step Check





3) Measure the resistance of harness between TCM connector and chassis ground.





M

Ω

?

Yes

Go to step 2.

No

Repair the short circuit in harness between TCM and transmission connector.






°

C (176

°

F).

NOTE:


°

C (32

°


Is the resistance 500 — 1,200

Ω

?




(T4) No. 5 — (T4) No. 12:




(T4) No. 5 — (T4) No. 12:



(B54) No. 2 (+) — (B54) No. 13 (

−

):


Go to step 4.


CHECK INPUT SIGNAL FROM TCM.



°

C (176

°

F).

NOTE:


°

C (32

°



Monitor?


Go to step 3.

Go to step 6.



Go to step 7.

Go to step 7.

Go to step 5.

Go to step 8.

5AT(diag)-43



6

7

8

Step





OFF).


Select Monitor.

Check




BODY.






M

Ω

?

NOTE:


5) Drain the ATF.

CAUTION:



7) Measure the resistance between chassis ground and control valve body connector.


(T5) No. 1 — Chassis ground:



Is there poor contact in ATF temperature sensor circuit 1?

Yes No



Go to step 8.


<Ref. to 5AT-58,

Control Valve

Body.>



Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-44



D: DTC P0715 INPUT/TURBINE SPEED SENSOR CIRCUIT


Input signal circuit of TCM is open or shorted.


• Excessive shift shock.

• Does not shift to 5th

WIRING DIAGRAM:

A: B54

TCM

B: B55

B11

T4

B12

T3

AT1

TURBINE SPEED SENSOR 1

E

A: B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B: B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

B12

1 2 3 4

5 6 7 8

AT1

1 2 3

AT-02074

5AT(diag)-45



1

2

3

4

5

6

Step Check







(B55) No. 16 — (B12) No. 7:

(B54) No. 16 — (B11) No. 7:


Ω

?



Measure the resistance of harness between

TCM connector and chassis ground.





M

Ω

?

CHECK TCM POWER SUPPLY OUTPUT.

1) Connect the TCM connector. (Transmission connector is disconnected)

2) Turn the ignition switch to ON. (engine

OFF)




−

):


CHECK TURBINE SPEED SENSOR INPUT

CIRCUIT OF TCM.

Measure the voltage between TCM connector terminals.


(B55) No. 16 (+) — (B54) No. 19 (

−

):







I/O Signal.>


CHECK HARNESS ASSEMBLY (TURBINE

SPEED SENSOR GROUND).

Check the installing condition of ground connecting harness of harness assembly (used for both of turbine speed sensor 1, rear vehicle speed sensor).

Is the ground connecting harness connected to transmission body securely?

And there are no excessive damages on harness and terminal?

Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 6.

No


Repair the short circuit in harness between TCM and chassis ground.

Go to step 5.

Go to step 5.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


Go to step 7.

If the poor installation of ground occurs, install it securely. Replace the transmission assembly when the harness or terminal is damaged.

<Ref. to 5AT-38,

Automatic Transmission Assembly.>

5AT(diag)-46

7

8

9

10

11



Step

CHECK HARNESS ASSEMBLY.



3) Disconnect the connector from turbine speed sensor 1.

4) Measure the resistance between transmission connector and turbine speed sensor 1 connector.


(T4) No. 7 — (AT1) No. 3:

(T3) No. 7 — (AT1) No. 2:

(AT1) No. 1 — Chassis ground:

Check


Ω

?

CHECK HARNESS ASSEMBLY.

Measure the resistance between transmission connector and chassis ground.





M

Ω

?



Monitor?

Yes

Go to step 8.

Go to step 9.

Go to step 11.

No

Repair the open circuit in harness between TCM and transmission connector, and poor contact in coupling connector.


Go to step 10.

PREPARE OSCILLOSCOPE.

Do you have an oscilloscope?

Go to step 12. Go to step 13.



1) Connect all the connectors.

2) Lift-up the vehicle and support with rigid racks.

NOTE:


3) Start the engine, and set the vehicle in 4th speed driving condition of manual mode.

NOTE:

Turbine speed sensor 1 signal can be measured only on 4th speed.

4) Read the current data of turbine speed sen-

sor 1 using the Subaru Select Monitor. <Ref. to

5AT(diag)-16, READ CURRENT DATA,


Does the value of the turbine speed sensor 1 change depending on the acceleration, deceleration and shifting range of the vehicle?

Even if the SPORT indicator lights blinks, the system is in normal condition.

A temporary poor contact of connector or harness may be the cause.

Repair the poor contact of harness between the


Replace the turbine speed sensor

1. <Ref. to 5AT-57,

Turbine speed sensor 1.>

NOTE:

The speed difference between front and rear wheels may light the ABS warning light, but this indicates no malfunction. When AT control diagnosis is finished, perform the ABS memory clearance procedure of on-board diagnostics system. <Ref. to ABS(diag)-27, Clear Memory

Mode.>

5AT(diag)-47



12

13


OSCILLOSCOPE.



NOTE:

Step


3) Set the oscilloscope to TCM connector terminals.

Positive probe; (B55) No. 16:

Ground lead; (B54) No. 19:


NOTE:


5) Display the pulse signal of turbine speed sensor 1 to oscilloscope, and measure the frequency.

Check

Is the frequency of measured waveform (pulse wave) changed depending on the acceleration, deceleration and shifting range of the vehicle?

Yes No






1. <Ref. to 5AT-57,


NOTE:


Mode.>


CIRCUIT TESTER.



NOTE:



NOTE:




(B55) No. 16 (+) — (B54) No. 19 (

−

):

Does the voltage change within the range of 2 — 3 V when driving the vehicle with

4th of manual mode? Is the voltage less than 0.5 V or more than 4.5 V constantly when the vehicle is parked with “P” range?






1. <Ref. to 5AT-57,


5) Stop the vehicle, and shift the select lever to “P” range.



(B55) No. 16 (+) — (B54) No. 19 (

−

):

NOTE:


Mode.>

5AT(diag)-48



E: DTC P0719 TORQUE CONVERTER/BRAKE SWITCH “B” CIRCUIT LOW


Brake switch malfunction, open input signal circuit


• Brake down control is not operated at SPORT mode.

• No lock-up occurs at braking.

WIRING DIAGRAM:

E

SBF-1 SBF-3

STOP LIGHT

SWITCH

B64

JOINT

CONNECTOR

B159

BODY INTEGRATED

UNIT

B: B280

C: B281

C: B281

1

8

2

9

3

20 21 22 23

4

24 25 26

5 6 7

10 11 12 13 14 15 16 17 18 19

27 28

B64

1 2

B159

1

5

2

6 7

3 4

8 9

B: B280

1

8

2

9

3

21 22 23 24 25

4 5 6 7

10 11 12 13 14 15 16 17 18 19 20

26 27 28 29 30

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B54 TCM

AT-01629

5AT(diag)-49



1

2

3

4

5

6

7

CHECK DTC.

Step Check Yes

Is any of following DTC displayed?

•

AT CAN Communication Circuit

•

Output Speed Sensor Circuit

•

AT Vehicle Speed Sensor

Circuit Malfunction (Rear

Wheel)


DTC.

Go to step 3.





OFF)

4) Turn the Subaru Select Monitor switch to

ON.

5) Depress the brake pedal.

6) Read the data of brake pedal switch using

Subaru Select Monitor. <Ref. to LAN(diag)-14,


Is the ON displayed?

CHECK TCM.

Read the data of brake pedal switch using

Subaru Select Monitor. <Ref. to 5AT(diag)-16,



No

Go to step 2.

Go to step 4.


Check the poor contact.

Replace the TCM

<Ref. to 5AT-61,


(TCM).>

Is the voltage more than 10 V? Go to step 7. Go to step 5.

CHECK BODY INTEGRATED UNIT INPUT

SIGNAL.

1) Disconnect the connector from body integrated unit.

2) Depress the brake pedal.

3) Measure the voltage between body integrated unit connector and chassis ground.



−

):

Go to step 6.

Repair the open circuit of harness between the body integrated unit and stop light switch.


BODY INTEGRATED UNIT AND STOP LIGHT

SWITCH.


2) Disconnect the connector from stop light switch.

3) Measure the resistance of harness between body integrated unit and stop light switch.


(B281) No. 23 — (B64) No. 2:


Ω

?



SWITCH.

Measure the resistance of harness between body integrated unit connector and stop light switch.




M

Ω

?


Is there poor contact in input signal of brake switch?

Go to step 7.


Repair the short circuit of harness between the body integrated unit and stop light switch.

Check the body integrated unit.

5AT(diag)-50



F: DTC P0720 OUTPUT SPEED SENSOR CIRCUIT


• AT vehicle speed signal is abnormal.

• The harness connector between TCM and vehicle speed sensor is in short or open.


• Deterioration of shifting quality.

• Poor driving performance.

WIRING DIAGRAM:

A: B54

B: B55

TCM

B11

T5

T7

CONTROL

VALVE

TRANSMISSION

FRONT VEHICLE

SPEED SENSOR

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T7

3 2 1

AT-02075

5AT(diag)-51

6

7



1

2

3

4

5

Step Check







(B54) No. 16 — (B11) No. 7:

(B55) No. 7 — (B11) No. 1:


Ω

?









M

Ω

?

Yes

Go to step 2.

Go to step 3.

No




1) Connect the connector to TCM. (Transmission connector is disconnected)


OFF)




−

):


CIRCUIT OF TCM.



(B55) No. 7 (+) — (B54) No. 19 (

−

):



Go to step 4.

Go to step 6.

Go to step 5.

Go to step 5.






I/O Signal.>




Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


Go to step 7.


Monitor?

Go to step 8.


Go to step 9.

Go to step 10.

5AT(diag)-52

8

9



Step Check Yes No





NOTE:


3) Start the engine, and drive it.

4) Read the current data of front wheel speed

using Subaru Select Monitor. <Ref. to

5AT(diag)-16, READ CURRENT DATA,


NOTE:


Mode.>

Does the value of the front wheel speed depending on the acceleration and deceleration of the vehicle?





Go to step 11.


OSCILLOSCOPE.



NOTE:







Is the frequency of measured waveform (pulse wave) changed depending on the acceleration and deceleration of the vehicle?





Go to step 11.

NOTE:


Mode.>

5AT(diag)-53



10

11

12

Step


CIRCUIT TESTER.



NOTE:





(B55) No. 7 (+) — (B54) No. 19 (

−

):




(B55) No. 7 (+) — (B54) No. 19 (

−

):

Check Yes No

Does the voltage change within the range of 2 — 3 V when vehicle is driving? Is the voltage less than 0.5 V or more than 4.5 V constantly when the vehicle is parked with “P” range?





Go to step 11.

NOTE:


Mode.>



BODY.






Ω

?

Go to step 12.


NOTE:


5) Drain the ATF.

CAUTION:





(B11) No. 7 — (T5) No. 15:

(B11) No. 1 — (T5) No. 14:



BODY.






M

Ω

?

Go to step 13.

Repair the short circuit in harness between transmission connector and transmission ground.

5AT(diag)-54

13

14



Step Check


CONTROL VALVE BODY AND VEHICLE

SPEED SENSOR.

1) Disconnect the connector from vehicle speed sensor.

2) Measure the resistance of harness between control valve body connector and vehicle speed sensor connector.


(T5) No. 15 — (T7) No. 3:

(T5) No. 14 — (T7) No. 2:



Ω

?


CONTROL VALVE BODY AND VEHICLE

SPEED SENSOR.

Measure the resistance of harness between control valve body connector and transmission ground.





M

Ω

?

Yes

Go to step 14.

Replace the vehicle speed sensor.

No


<Ref. to 5AT-58,

Control Valve

Body.>


<Ref. to 5AT-58,

Control Valve

Body.>

5AT(diag)-55



G: DTC P0724 TORQUE CONVERTER/BRAKE SWITCH “B” CIRCUIT HIGH


Brake switch malfunction, open input signal circuit


Gear is not shifted down when climbing a hill.

WIRING DIAGRAM:

E

SBF-1 SBF-3

STOP LIGHT

SWITCH

B64

JOINT

CONNECTOR

B159

BODY INTEGRATED

UNIT

B: B280

C: B281

C: B281

1

8

2

9

3

20 21 22 23

4

24 25 26

5 6 7

10 11 12 13 14 15 16 17 18 19

27 28

B64

1 2

B159

1

5

2

6 7

3 4

8 9

B: B280

1

8

2

9

3

21 22 23 24 25

4 5 6 7

10 11 12 13 14 15 16 17 18 19 20

26 27 28 29 30

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23 24

B54 TCM

AT-01629

5AT(diag)-56

1

2

3

4

5

6

7



CHECK DTC.

Step Check Yes

Is any of following DTC detected?

•


•


•



Wheel)


DTC.

Go to step 3.





OFF)


ON.

5) Read the data of brake pedal switch using



Is OFF displayed?

No

Go to step 2.

Go to step 4.

CHECK TCM.

Read the data of brake pedal switch using



Is OFF displayed?


Check the poor contact.

Replace the TCM

<Ref. to 5AT-61,


(TCM).>

Is the voltage more than 10 V? Go to step 5. Go to step 7.


SIGNAL.


2) Measure the voltage between body integrated unit connector and chassis ground.



−

):

Replace stop light switch.

CHECK STOP LIGHT SWITCH.


2) Disconnect the connector from stop light switch.

3) Measure the resistance of harness between stop light switch connectors.

Terminals

No. 1 — No. 2:


M

Ω

?

Go to step 6.



SWITCH.


2) Measure the voltage of harness between the body integrated unit connector and chassis ground.



−

):

Is the voltage less than 1 V?

Go to step 7.


Is there poor contact in input signal of brake switch?


Repair the short circuit in harness between TCM and stop light switch.


5AT(diag)-57



H: DTC P0725 ENGINE SPEED INPUT CIRCUIT


Information of engine speed is not correctly received from ECM.


No lock-up (after engine warm-up).

1

2

3

Step

CHECK DTC OF ECM.



Check Yes

Is DTC of AT CAN communication circuit detected?


DTC.

No

Go to step 2.

Is DTC of AT CAN communication circuit detected?


DTC.

Go to step 3.


•


•



Wheel)


DTC.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

I: DTC P0731 GEAR 1 INCORRECT RATIO

NOTE:

Refer to DTC P0736 for diagnostic procedure. <Ref. to 5AT(diag)-59, DTC P0736 REVERSE INCORRECT

RATIO, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

J: DTC P0732 GEAR 2 INCORRECT RATIO

NOTE:



K: DTC P0733 GEAR 3 INCORRECT RATIO

NOTE:



L: DTC P0734 GEAR 4 INCORRECT RATIO

NOTE:



M: DTC P0735 GEAR 5 INCORRECT RATIO

NOTE:



5AT(diag)-58

2

3



N: DTC P0736 REVERSE INCORRECT RATIO


Vehicle speed sensor, turbine speed sensor or control valve malfunction


• Shift point is too high or too low.


• Tight corner braking phenomenon is occurred.

• Gear is not shifted to reverse.

• Gear position is held by fail safe function.

• Vehicle does not run.

1

4

5

6

7

Step



CHECK ENGINE SPEED.

Compare the meter with Subaru Select Monitor indications.

CHECK TURBINE SPEED SENSOR.

Check the indication of Subaru Select Monitor.

CHECK FRONT AND REAR VEHICLE

SPEED SENSOR.


CHECK AFTER REPAIR.

Is the indication of Subaru

Select Monitor and meter matches?

Check Yes


•


•


Range/Performance

•

Input/Turbine Speed Sensor

Circuit

•

Torque Converter Turbine 2

Speed Signal Circuit 2 Malfunction

•


•



Wheel)

•

Transmission Range Sensor

Circuit (PRNDL Input)

•

PVIGN Power Supply Circuit (Low)


DTC.

Go to step 3.

Go to step 2.

Go to step 7.


Monitor?



Go to step 4.


DTC P0725.

Is the indication changes according to acceleration, braking and shifting?

Go to step 5.

Go to step 6.

No


DTC P0715,

P1710.


DTC P0720,

P1706.



Is DTC displayed?

Go to step 7.


<Ref. to 5AT-58,

Control Valve

Body.>


DTC P0705.

Temporary poor contact occurs.

5AT(diag)-59



O: DTC P0741 TORQUE CONVERTER CLUTCH CIRCUIT PERFORMANCE OR

STUCK OFF


• Lock up clutch malfunction

• Locking of bulb


No lock-up occurs. (After engine is warmed-up)

1

2

3

4

5

Step



1) Perform the clear memory mode. <Ref. to

5AT(diag)-18, CLEAR MEMORY MODE,


2) Read DTC.

CHECK INHIBITOR SWITCH CIRCUIT.

Diagnose according to DTC P0705 procedure.

Check


•


•


•

Input/Turbine Speed Sensor

Circuit

•

Torque Converter Turbine 2

Speed Signal Circuit 2 Malfunction

Is DTC displayed?

Yes

Perform the diagnosis according to each DTC.

No

Go to step 2.


DTC.

Go to step 3.

Is there any trouble?

CHECK STOP LIGHT SWITCH CIRCUIT.

Diagnose according to DTC P0719 and P0724 procedure.

CHECK ATF TEMPERATURE SENSOR CIR-

CUIT.

Diagnose according to DTC P0712, P0713,

P1716 and P1717 procedure.



Repair or replace the inhibitor switch circuit.

Go to step 4.

Repair or replace the stop light switch circuit.

Go to step 5.

Repair or replace the ATF temperature sensor circuit.

There are malfunctions in TCM,

TCM connector poor contact or transmission assembly mechanical malfunction.

5AT(diag)-60



P: DTC P0743 TORQUE CONVERTER CLUTCH CIRCUIT ELECTRICAL


The output signal circuit of lock up solenoid is open or shorted.


No lock-up (after engine warm-up).

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5 6 7 8

3 4

9 10 11 12

T6

TRANSMISSION

AT-02076

5AT(diag)-61



1

2

3

4

5

6

7

Step Check







(B54) No. 23 — (B11) No. 20:




Ω

?


TCM AND CHASSIS GROUND.

Measure resistance of harness between TCM connector and chassis ground.




M

Ω

?



BODY.





5) Drain the ATF.

6) Remove the oil pan, and disconnect the control valve body connector.



(T4) No. 20 — (T6) No. 6:


Ω

?



BODY.

Measure the resistance between chassis ground and control valve body connector.




M

Ω

?

Is the resistance 3 — 9

Ω

?

CHECK LOCK-UP SOLENOID.





Check that there are no poor contact in TCM connector, transmission connector and control valve body connector.

Is there any loosing terminal, entering foreign matter, damaging connector body?


1) Perform the clear memory mode.

2) Drive for a while, read the DTC, and verify that there is no faulty.

Is DTC displayed?

Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No


Repair the short circuit in harness between TCM connector and transmission connector.


Repair the short circuit in harness between control valve body connector and transmission ground.


<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Temporary poor contact or open circuit occurs.

Recheck that the harness connector has no faulty.

5AT(diag)-62



Q: DTC P0748 PRESSURE CONTROL SOLENOID “A” ELECTRICAL


Output signal circuit of line pressure solenoid is open or shorted.



WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5 6 7 8

3 4

9 10 11 12

T6

TRANSMISSION

AT-02077

5AT(diag)-63



1

2

3

4

5

6

7

Step Check







(B54) No. 9 — (B11) No. 19:




Ω

?







M

Ω

?



BODY.





5) Drain the ATF.




(T4) No. 19 — (T6) No. 7:


Ω

?



BODY.





M

Ω

?


Ω

?

CHECK LINE PRESSURE SOLENOID.










Is DTC displayed?

Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No






<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>



5AT(diag)-64



R: DTC P0751 SHIFT SOLENOID “A” PERFORMANCE OR STUCK OFF


Output signal of front brake solenoid does not match with oil pressure.


Locked to 4th or 5th gear.

WIRING DIAGRAM:

TCM

A: B54

B: B55

T5

T6

TRANSMISSION

B11

T4

E

A:

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

AT-02078

5AT(diag)-65

3

4



1

2

5

6

7

Step Check







(B54) No. 24 — (B11) No. 17:

(B55) No. 17 — (B11) No. 3:




Ω

?








M

Ω

?



Monitor?

Is OFF displayed?





OFF)

3) Check input signal of Fr/B oil pressure SW.




2) Turn the ignition switch to ON. (engine ON)

3) Shift to 4th speed with checking current gear position using Subaru Select Monitor.






3) Shift to 1st speed with checking current gear position using Subaru Select Monitor.


Is OFF displayed?



Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.

No



Go to step 7.

Go to step 11.


<Ref. to 5AT-58,

Control Valve

Body.>

Even if the SPORT

Go to step 10.

indicator lights blinks, the system is in normal condition.


Repair the poor contact of harness in the solenoid output and oil pressure SW input.

Go to step 8.

Go to step 11.


CIRCUIT TESTER.



OFF)

3) Measure the voltage of harness between




−

):

5AT(diag)-66

8

9

10



Step


CIRCUIT TESTER.



3) Shift to 4th speed of manual mode with checking indication of gear position in combination meter.

NOTE:

Read the value of gear position indication after the shifting is completed (approx. 2 seconds later from shifting).

Check


Yes

Go to step 9.

No


<Ref. to 5AT-58,

Control Valve

Body.>




−

):


CIRCUIT TESTER.



3) Shift to 1st speed of manual mode with checking indication of gear position in combination meter.

NOTE:


4) Measure the voltage of harness between




−

):

Is the voltage less than 1.5 V? Even if the SPORT indicator lights blinks, the system

Go to step 10.

is in normal condition.





BODY.





5) Drain the ATF.




(B11) No. 17 — (T6) No. 10:

(B11) No. 3 — (T6) No. 11:


Ω

?

Replace the transmission assembly.

<Ref. to 5AT-38,



5AT(diag)-67



11

Step Check



BODY.





5) Drain the ATF.


7) Measure the resistance between transmission ground and control valve body connector.





M

Ω

?

Yes


<Ref. to 5AT-58,

Control Valve

Body.>

No


5AT(diag)-68



S: DTC P0753 SHIFT SOLENOID “A” ELECTRICAL


Output signal circuit of front brake solenoid is open or shorted.


Locked to 4th or 5th gear.

WIRING DIAGRAM:

TCM

A: B54

B: B55

T5

T6

TRANSMISSION

B11

T4

E

A:

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

AT-02078

5AT(diag)-69



1

2

3

4

5

6

Step Check







(B54) No. 24 — (B11) No. 17:

(B55) No. 17 — (B11) No. 3:




Ω

?








M

Ω

?



BODY.





5) Drain the ATF.




(T4) No. 17 — (T6) No. 9:

(T4) No. 3 — (T5) No. 11:


Ω

?



BODY.






M

Ω

?


Ω

?

CHECK FRONT BRAKE SOLENOID.







Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No




Repair the short circuit in harness between control valve body and transmission connector.


<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

5AT(diag)-70

7



Step




Check

Is DTC displayed?

Yes

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No



5AT(diag)-71



T: DTC P0756 SHIFT SOLENOID “B” PERFORMANCE OR STUCK OFF


Output signal value of input clutch solenoid and oil pressure does not match.


Locked to 4th gear.

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

T5

T6

TRANSMISSION

AT-02079

5AT(diag)-72

1

2

3

4

5



Step Check







(B54) No. 18 — (B11) No. 18:

(B54) No. 6 — (B11) No. 11:




Ω

?








M

Ω

?

Is OFF displayed?





OFF)

3) Check input signal of I/C oil pressure SW.





3) Shift to “D” range and brake ON (1st) with checking current gear position using Subaru

Select Monitor.


Is OFF displayed?





3) Drive the vehicle on 4th speed of “D” range with checking current gear position using Subaru Select Monitor.



Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

No



Go to step 7.


<Ref. to 5AT-58,

Control Valve

Body.>

Even if the SPORT indicator lights

Go to step 6.

blinks, the system is in normal condition.



5AT(diag)-73



6

7

Step Check



BODY.





5) Drain the ATF.




(T4) No. 18 — (T6) No. 8:

(T4) No. 11 — (T5) No. 8:


Ω

?



BODY.





5) Drain the ATF.







M

Ω

?

Yes


<Ref. to 5AT-38,


No



<Ref. to 5AT-58,

Control Valve

Body.>


5AT(diag)-74



U: DTC P0758 SHIFT SOLENOID “B” ELECTRICAL


Output signal circuit of input clutch solenoid is open or shorted.


Locked to 4th gear.

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

T5

T6

TRANSMISSION

AT-02079

5AT(diag)-75



1

2

3

4

5

6

Step Check







(B54) No. 18 — (B11) No. 18:

(B54) No. 6 — (B11) No. 11:




Ω

?


TCM AND BODY HARNESS.

Measure resistance of harness between TCM connector and body harness.





M

Ω

?



BODY.





5) Drain the ATF.




(T4) No. 18 — (T6) No. 8:

(T4) No. 11 — (T5) No. 8:


Ω

?



BODY.






M

Ω

?


Ω

?

CHECK INPUT CLUTCH SOLENOID.







Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No






<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

5AT(diag)-76

7



Step




Check

Is DTC displayed?

Yes

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No



5AT(diag)-77



V: DTC P0761 SHIFT SOLENOID “C” PERFORMANCE OR STUCK OFF


Output signal value of high & low reverse clutch solenoid and oil pressure does not match.


Locked to 4th gear.

WIRING DIAGRAM:

TCM

A: B54

B: B55

T5

T6

TRANSMISSION

B11

T4

E

A:

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

AT-02080

5AT(diag)-78

1

2

3

4

5

6



Step Check







(B54) No. 17 — (B11) No. 15:

(B55) No. 8 — (B11) No. 4:




Ω

?








M

Ω

?







Select Monitor.

4) Check input signal of H&LR/C oil pressure

SW.


Monitor?





OFF)


SW.

Is OFF displayed?





3) Drive the vehicle on 2nd speed of “D” range with checking current gear position using Subaru Select Monitor.


SW.

Is OFF displayed?


Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.

No



Go to step 7.

Go to step 11.


<Ref. to 5AT-58,

Control Valve

Body.>


Go to step 10.




5AT(diag)-79



7

8

9

10

Step


CIRCUIT TESTER.



OFF)




−

):


CIRCUIT TESTER.



3) Shift to 2nd speed of manual mode with checking indication of gear position in combination meter.

Check



Yes

Go to step 8.

Go to step 9.

No

Go to step 11.


<Ref. to 5AT-58,

Control Valve

Body.>

NOTE:





−

):


CIRCUIT TESTER.



3) Shift to 1st speed of manual mode with checking indication of gear position in combination meter.

NOTE:





−

):

Is the voltage less than 1.5 V? Even if the SPORT indicator lights blinks, the system is in normal condition.

Go to step 10.





BODY.





5) Drain the ATF.




(T4) No. 15 — (T6) No. 12:

(T4) No. 4 — (T5) No. 12:


Ω

?


<Ref. to 5AT-38,



5AT(diag)-80

11



Step Check



BODY.





5) Drain the ATF.







M

Ω

?

Yes


<Ref. to 5AT-58,

Control Valve

Body.>

No


5AT(diag)-81



W: DTC P0763 SHIFT SOLENOID “C” ELECTRICAL


Output signal circuit of high & low reverse clutch solenoid is open or shorted.


Locked to 4th gear.

WIRING DIAGRAM:

TCM

A: B54

B: B55

T5

T6

TRANSMISSION

B11

T4

E

A:

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

AT-02080

5AT(diag)-82

1

2

3

4

5

6



Step Check







(B54) No. 17 — (B11) No. 15:

(B55) No. 8 — (B11) No. 4:




Ω

?








M

Ω

?



BODY.





5) Drain the ATF.




(T4) No. 15 — (T6) No. 12:

(T4) No. 4 — (T5) No. 12:


Ω

?



BODY.

Measure the resistance of harness connector between control valve body connector and chassis ground.





M

Ω

?


Ω

?

CHECK HIGH & LOW REVERSE CLUTCH

SOLENOID.







Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No




Repair the open circuit in harness between control valve body connector and transmission ground.


<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

5AT(diag)-83



7

Step




Check

Is DTC displayed?

Yes

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No



5AT(diag)-84



X: DTC P0766 SHIFT SOLENOID “D” PERFORMANCE OR STUCK OFF


Output signal value of direct clutch solenoid and oil pressure does not match.


Locked to 4th gear.

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5 6 7 8

3 4

9 10 11 12

T5

T6

TRANSMISSION

AT-02081

5AT(diag)-85



1

2

3

4

5

Step Check







(B54) No. 22 — (B11) No. 16:

(B54) No. 21 — (B11) No. 10:




Ω

?








M

Ω

?

Is OFF displayed?





OFF)

3) Check input signal of D/C oil pressure SW.






Select Monitor.


Is OFF displayed?





3) Shift to 2nd speed of manual mode and brake ON with checking current gear position using Subaru Select Monitor.



Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

No



Go to step 7.


<Ref. to 5AT-58,

Control Valve

Body.>


Go to step 6.




5AT(diag)-86

6

7



Step Check



BODY.





5) Drain the ATF.




(T4) No. 16 — (T6) No. 10:

(T4) No. 10 — (T5) No. 9:


Ω

?



BODY.





5) Drain the ATF.







M

Ω

?

Yes


<Ref. to 5AT-38,


No



<Ref. to 5AT-58,

Control Valve

Body.>


5AT(diag)-87



Y: DTC P0768 SHIFT SOLENOID “D” ELECTRICAL


The output signal circuit of direct clutch solenoid is open or shorted.


Locked to 4th gear.

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5 6 7 8

3 4

9 10 11 12

T5

T6

TRANSMISSION

AT-02081

5AT(diag)-88

1

2

3

4

5

6



Step Check







(B54) No. 22 — (B11) No. 16:

(B54) No. 21 — (B11) No. 10:




Ω

?








M

Ω

?



BODY.





5) Drain the ATF.




(T4) No. 16 — (T6) No. 10:

(T4) No. 10 — (T5) No. 9:


Ω

?



BODY.






M

Ω

?


Ω

?

CHECK DIRECT CLUTCH SOLENOID.

Measure the resistance of harness connector between control valve body connector and transmission ground.






Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No






<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

5AT(diag)-89



7

Step




Check

Is DTC displayed?

Yes

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No



5AT(diag)-90



Z: DTC P0771 SHIFT SOLENOID “E” PERFORMANCE OR STUCK OFF


Output signal value of low coast brake solenoid and oil pressure does not match.


• Locked to 2nd gear.

• Engine brake does not function at 1st or 2nd of manual mode.

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5

6 7 8

3 4

9 10 11 12

T5 T6

TRANSMISSION

AT-02082

5AT(diag)-91



1

2

3

4

5

Step Check







(B54) No. 15 — (B11) No. 13:

(B54) No. 12 — (B11) No. 9:




Ω

?








M

Ω

?





OFF)

3) Check input signal of LC/B oil pressure SW.

Is OFF displayed?





3) Shift to 3rd speed with checking current gear position using Subaru Select Monitor.


Is OFF displayed?





3) Drive the vehicle on 2nd speed of manual mode 15 km/h (9 MPH) with checking current gear position using Subaru Select Monitor.



Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

No



Go to step 7.


<Ref. to 5AT-58,

Control Valve

Body.>

Even if the SPORT

Go to step 6.

indicator lights blinks, the system is in normal condition.



5AT(diag)-92

6

7



Step Check



BODY.





5) Drain the ATF.




(T4) No. 13 — (T6) No. 13:

(T4) No. 9 — (T5) No. 10:


Ω

?



BODY.





5) Drain the ATF.







M

Ω

?

Yes


<Ref. to 5AT-38,


No



<Ref. to 5AT-58,

Control Valve

Body.>


5AT(diag)-93



AA:DTC P0773 SHIFT SOLENOID “E” ELECTRICAL


Output signal circuit of low coast brake solenoid is open or shorted.


• Locked to 2nd gear.

• Engine brake does not function at 1st or 2nd of manual mode.

WIRING DIAGRAM:

TCM

B54

B11

T4

E

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5

6 7 8

3 4

9 10 11 12

T5 T6

TRANSMISSION

AT-02082

5AT(diag)-94

1

2

3

4

5

6



Step Check







(B54) No. 15 — (B11) No. 13:

(B54) No. 12 — (B11) No. 9:




Ω

?








M

Ω

?

Yes

Go to step 2.

Go to step 3.



BODY.





5) Drain the ATF.




(T4) No. 13 — (T6) No. 13:

(T4) No. 9 — (T5) No. 10:


Ω

?



BODY.






M

Ω

?

Go to step 4.

Go to step 5.

CHECK LOW COAST BRAKE SOLENOID.

Measure the resistance of harness connector between control valve body connector and transmission ground.



Is the resistance between 5 —

17

Ω

?




Go to step 6.


No






<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

5AT(diag)-95



7

Step




Check

Is DTC displayed?

Yes

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No



5AT(diag)-96



AB:DTC P0801 REVERSE INHIBIT CONTROL CIRCUIT


Shift lock solenoid malfunction, open or short reverse inhibitor control circuit


• Gear is shifted from “N” range to “R” range during driving at 20 km/h 12 MPH) or more.

• Gear can not be shifted from “N” range to “R” range though the vehicle is parked.

WIRING DIAGRAM:

TCM

B55

B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B116

1 2 3 4

5 6 7 8 9 10


B116

3

4

SHIFT LOCK

SOLENOID

E

AT-01536

5AT(diag)-97



1

2

3

4

5

6

Step



2) Remove the fuse (No. 32).



2) With the brake pedal depressed, shift the select lever to “D” range.




−

):

Check

Is the voltage more than 10.5

V?

Yes No


(No. 32). If the replaced fuse has blown out easily, repair the short circuit in harness between fuse (No.

32) and TCM.

Go to step 2.

Go to step 3.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


TCM AND SHIFT LOCK SOLENOID.


2) Disconnect the connector from TCM and shift lock solenoid.

3) Measure the resistance of harness between TCM and shift lock solenoid connector.


(B55) No. 15 — (B116) No. 3:


Ω

?

Go to step 4.


TCM AND SHIFT LOCK SOLENOID.

Measure the voltage of harness between TCM and chassis ground.




M

Ω

?

Go to step 5.

CHECK HARNESS BETWEEN SHIFT LOCK

SOLENOID AND CHASSIS GROUND TERMI-

NAL.

Measure the resistance of harness between shift lock solenoid and chassis ground.




Ω

?

Go to step 6.


Ω

?

Go to step 7.

CHECK SHIFT LOCK SOLENOID.

Measure the resistance of shift lock solenoid terminals.


(B116) No. 3 — No. 4:

Repair the open circuit in harness between TCM and shift lock solenoid connector.

Repair the short circuit in harness between TCM and shift lock solenoid connector.

Repair the open circuit in harness between chassis ground and shift lock solenoid connector.

Replace the shift lock solenoid.

5AT(diag)-98

7

8






NOTE:



3) Shift the select lever to “D” range and slowly increase vehicle speed to 20 km/h (12

MPH).

NOTE:


Mode.>


Even if the SPORT

Go to step 8.

indicator lights up, the circuit has returned to normal condition at this time. A temporary poor contact of connector or harness may be the cause. Repair harness or connector in reverse inhibitor control circuit.




−

):


Is there poor contact in the reverse inhibitor control circuit?


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-99



AC:DTC P0817 STARTER DISABLE CIRCUIT


Open or short in P/N signal output circuit


• Engine can be started on other than “P” or “N” range

• Engine can not be started on “P” or “N” range

WIRING DIAGRAM:

ECM

B137

B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B137

8

1

9

2

10

3 5 6 7

11 12 13 14 15

18 19 20 21

26 27

4

22 23

28 29

16 17

24 25

30 31

B55

TCM

AT-01632

5AT(diag)-100

1

2

3

4

5

6

7

8



Step


CHECK TCM OUTPUT SIGNAL.

1) Shift the select lever to “D” range.




−

):


Check Yes

Is DTC of Transmission Range

Sensor Circuit (PRNDL Input) circuit detected?


DTC.

No

Go to step 2.

CHECK ECM.



2) Remove the fuse.

Is the communication between

Subaru Select Monitor and

ECM normal?

Go to step 3.




(No. 32) and TCM.

Go to step 4.


TCM AND ECM.





(B55) No. 19 — (B137) No. 9:


Ω

?


TCM AND ECM.






M

Ω

?

Go to step 5.

Go to step 6.



1) Connect the TCM and ECM connector.


OFF)





−

):


DTC concerning

ECM.


Repair the short circuit in harness between transmission connector and chassis ground.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


Go to step 8.

Is there any open or poor contact of connector (loosing terminal, entering foreign matter, damaging connector body)?


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Check neutral circuit inside the

ECM.

5AT(diag)-101



AD:DTC P0882 TCM POWER INPUT SIGNAL LOW


Malfunction of PVIGN power supply relay or open, short circuit of PVIGN power supply circuit.


Gear is not changed.

WIRING DIAGRAM:

SBF-1 SBF-9

IGNITION

SWITCH

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B357

E

B357

B54 TCM

AT-01630

5AT(diag)-102

1

2

3

4

5



Step

CHECK FUSE.


2) Remove the SBF 1, SBF 2 and fuse (No.

12), and then check those are not blown out.

Check

Is the fuse blown out?

CHECK INPUT VOLTAGE FOR PVIGN RE-

LAY.

Measure the voltage between PVIGN relay and chassis ground.



−

):


−

):


Yes No

Replace the fuse.

If the replaced fuse has blown out easily, repair the short circuit in harness of each fuse.

Go to step 2.

Go to step 3.

Check open circuit in harness between fuse (No.

12) and PVIGN relay.

CHECK HARNESS BETWEEN PVIGN RE-

LAY OF TCM.

Measure the resistance between TCM connector and PVIGN relay connector.


(B54) No. 10 — (B357) No. 1:

(B54) No. 7 — (B357) No. 4:

(B54) No. 8 — (B357) No. 4:


Ω

?


CHECK PVIGN POWER SUPPLY CIRCUIT.


OFF)




−

):


−

):

CHECK PVIGN RELAY OUTPUT OF TCM.

Measure the voltage between TCM connector and chassis ground.



−

):

Go to step 4.

Repair the open circuit of harness.

Temporary poor contact. Recheck the harness between TCM and relay. (Lightly move the harness and check that the open or short circuit is not occurred.)

Go to step 5.

Is the voltage less than 1.5 V? Replace the

PVIGN relay.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-103



AE:DTC P0957 BACKUP LIGHT RELAY CIRCUIT LOW


Short circuit of back-up light relay output circuit


Back-up light does not illuminate in “R” range.

WIRING DIAGRAM:

SBF-1 SBF-9

IGNITION

RELAY

B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B356

1 2

3

4

E

B356

BACKUP LIGHT CIRCUIT

B55 TCM

AT-01631

5AT(diag)-104

1

2

3

4

5

6



Step



TCM AND BACK-UP LIGHT RELAY.


2) Disconnect the connector from TCM and backup light relay.

3) Measure the resistance of harness between TCM and backup light relay connector.


(B55) No. 11 — (B356) No. 1:



OFF)


Check Yes




DTC.

No

Go to step 2.


Ω

?








M

Ω

?

Go to step 3.

Go to step 4.





Shift the select lever to “R” range.

CHECK INPUT VOLTAGE FOR BACKUP

LIGHT RELAY.

Measure the voltage between back-up light relay and chassis ground.



Go to step 6.

Replace the backup light relay.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Check open or short circuit in harness between fuse

(No. 18) and backup light relay.

5AT(diag)-105



AF:DTC P0958 BACKUP LIGHT RELAY CIRCUIT HIGH


Back-up light relay malfunction, or open/short circuit in back-up light relay output circuit


• Back-up light does not illuminate in “R” range.

• Back-up light always illuminate in other than “R” range.

WIRING DIAGRAM:

SBF-1 SBF-9

IGNITION

RELAY

B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B356

1 2

3

4

E

B356

BACKUP LIGHT CIRCUIT

B55 TCM

AT-01631

5AT(diag)-106

1

2

3

4

5

6



Step



TCM AND BACK-UP LIGHT RELAY.


2) Disconnect the connector from TCM and back-up light relay.

3) Measure the resistance of harness between TCM and back-up light relay connector.


(B55) No. 11 — (B356) No. 1:



OFF)


Check Yes




DTC.

No

Go to step 2.


Ω

?








M

Ω

?

Go to step 3.

Go to step 4.





Shift the select lever to “R” range.

CHECK INPUT VOLTAGE FOR BACK-UP

LIGHT RELAY.

Measure the voltage between back-up light relay and chassis ground.



Go to step 6.

Replace the backup light relay.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Check open or short circuit in harness between fuse

(No. 18) and backup light relay.

5AT(diag)-107



AG:DTC P1601 TCM COMMUNICATION MALFUNCTION


Communication does not complete between control valve memory box.


Shifting quality malfunction

WIRING DIAGRAM:

B54 TCM

B11

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

TRANSMISSION

T5

1

2

AT-01800

Step

CHECK POOR CONTACT OF TRANSMIS-

SION CONNECTOR.

Check loose connection on TCM connector

(B54).


Check

Is there poor contact on connector?

Yes

Go to step 2.

No

Connect it securely.

Is DTC of oil pressure switch detected?


DTC.

Go to step 3.

5AT(diag)-108

3

4

5

6

7

8



Step



OFF)




−

):

Check








(B54) No. 12 — (B11) No. 9:

(B54) No. 21 — (B11) No. 10:

(B54) No. 6 — (B11) No. 11:


Ω

?










M

Ω

?


TRANSMISSION CONNECTOR AND CON-

TROL VALVE BODY CONNECTOR.

Measure the resistance between transmission connector and control valve body connector.


(B54) No. 9 — (T5) No. 10:

(B54) No. 10 — (T5) No. 9:

(B54) No. 11 — (T5) No. 8:


Ω

?


TRANSMISSION CONNECTOR AND CON-

TROL VALVE BODY CONNECTOR.

Measure the resistance between transmission connector and chassis ground.






M

Ω

?


NOTE:

Data communication malfunction is detected when the malfunction occurred on inspection area above while transmission assembly is replacing or “Clear Memory 2” is performing.

When the repair is performed with following diagnosis above, perform the “Clear Memory 2”, and then recheck that the DTC of TCM data communication malfunction is not detected.


Yes

Go to step 4.

Go to step 5.

Go to step 6.

Go to step 7.

Go to step 8.


No

Go to step 5.






<Ref. to 5AT-38,


5AT(diag)-109



AH:DTC P1706 AT VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION (REAR

WHEEL)




• Shifting quality malfunction


WIRING DIAGRAM:

A: B54

TCM

B: B55

A: B11

B: B12

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

A: B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

B: B12

1 2 3 4

5 6 7 8

E

REAR VEHICLE

SPEED SENSOR

AT-01537

5AT(diag)-110

1

2

3

4

5

6

7

8



Step Check







(B54) No. 16 — (B11) No. 7:

(B55) No. 18 — (B12) No. 5:


Ω

?









M

Ω

?

Yes

Go to step 2.

Go to step 3.

No






OFF)




−

):


CIRCUIT OF TCM.



(B55) No. 18 (+) — (B54) No. 19 (

−

):



Go to step 4.

Go to step 6.

Go to step 5.

Go to step 5.


Check TCM I/O signal of power supply, ground and PVIGN power supply relay.



I/O Signal.>

CHECK HARNESS ASSEMBLY (TURBINE

SPEED SENSOR GROUND).

Check the installing condition of ground connecting harness (used for both of turbine speed sensor 1, rear vehicle speed sensor).




Is the ground connecting harness installed to transmission body correctly, or the harness and connector terminals not damaged?

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


Go to step 7.

When the poor installation of ground connecting harness, install it securely.

Replace the transmission assembly when the harness is damaged. <Ref. to 5AT-38, Automatic Transmission Assembly.>

Go to step 8.


Monitor?

Go to step 9.


Go to step 10.

Go to step 11.

5AT(diag)-111



9

10






NOTE:


3) Start the engine, and drive the vehicle.

4) Read the current data of front wheel speed using Subaru Select Monitor.

<Ref. to 5AT(diag)-16, OPERATION, Subaru

Select Monitor.>

NOTE:


Mode.>

Does the value of the front wheel speed depending on the acceleration and deceleration of the vehicle?



Repair harness or contact in the ATF temperature sensor and transmission connector.

Replace the transmission harness.


OSCILLOSCOPE.



NOTE:








NOTE:


Mode.>






5AT(diag)-112

11



Step


CIRCUIT TESTER.



NOTE:





(B55) No. 7 (+) — (B54) No. 19 (

−

):




(B55) No. 7 (+) — (B54) No. 19 (

−

):

NOTE:


Mode.>

Check Yes No






5AT(diag)-113



AI: DTC P1707 AT AWD SOLENOID VALVE CIRCUIT MALFUNCTION


Output signal circuit of transfer solenoid is open or shorted.



• Drivability getting worse.

WIRING DIAGRAM:

TCM

A: B54

B: B55

B11

T4

E

T6

TRANSMISSION

A:

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

1 2 3 4

5 6 7

9 10 11 12

8

13 14 15 16

17 18 19 20

T6

1 2

5 6 7 8

3 4

9 10 11 12

AT-02083

5AT(diag)-114

1

2

3

4

5

6

7



Step Check







(B55) No. 23 — (B11) No. 8:




Ω

?







M

Ω

?



BODY.





5) Drain the ATF.




(T4) No. 8 — (T6) No. 11:


Ω

?



BODY.





M

Ω

?


Ω

?

AWD SOLENOID CURRENT.










Is DTC displayed?

Yes

Go to step 2.

Go to step 3.

Go to step 4.

Go to step 5.

Go to step 6.


No






<Ref. to 5AT-58,

Control Valve

Body.>

Go to step 7.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>



5AT(diag)-115



AJ:DTC P1710 TORQUE CONVERTER TURBINE 2 SPEED SIGNAL CIRCUIT 2

MALFUNCTION





• Does not shift to 5th

WIRING DIAGRAM:

A: B54

TCM

B: B55

B11

T4

B12

T3

T5 T6

TURBINE SPEED SENSOR 2

TRANSMISSION

E

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

B12

1 2 3 4

5 6 7 8

T5

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T6

1 2

5 6 7 8

3 4

9 10 11 12

AT-02084

5AT(diag)-116

1

2

3

4

5

6

7



Step Check







(B55) No. 22 — (B12) No. 6:

(B54) No. 16 — (B11) No. 7:


Ω

?









M

Ω

?

Yes

Go to step 2.

Go to step 3.

No






OFF)



(B54) No. 16 (+) — (B54) No. 19 (

−

):


CIRCUIT OF TCM.



(B55) No. 22 (+) — (B54) No. 19 (

−

):



Go to step 4.

Go to step 6.

Go to step 5.

Go to step 5.


Check TCM I/O signal of power supply, ground and PVIGN power supply relay.



I/O Signal.>



Is I/O signal OK?

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


Go to step 7.


Monitor?

Go to step 8.


Go to step 9.

Go to step 10.

5AT(diag)-117



8

9






NOTE:


3) Start the engine, and set the vehicle in 1st speed driving condition of manual mode.

4) Read the current data of torque converter turbine speed 2 using the Subaru Select Monitor.

<Ref. to 5AT(diag)-16, OPERATION, Subaru

Select Monitor.>

NOTE:


Mode.>

Does the value of the turbine speed sensor 2 change depending on the acceleration, deceleration and shifting gear of the vehicle?



Repair the poor contact in harness of turbine speed sensor 2 and transmission connector.

Go to step 11.


OSCILLOSCOPE.



NOTE:












Go to step 11.

NOTE:


Mode.>

5AT(diag)-118

10

11

12



Step


CIRCUIT TESTER.



NOTE:





(B55) No. 22 (+) — (B54) No. 19 (

−

):




(B55) No. 22 (+) — (B54) No. 19 (

−

):

Check Yes No





Go to step 11.

NOTE:


Mode.>



BODY.






Ω

?

NOTE:


5) Drain the ATF.

CAUTION:





(T3) No. 6 — (T6) No. 3:

(T4) No. 7 — (T5) No. 15:



BODY.






M

Ω

?

Go to step 12.


<Ref. to 5AT-58,

Control Valve

Body.>


Repair the short circuit in harness between transmission connector and transmission ground.

5AT(diag)-119



AK:DTC P1716 ATF TEMP. SENSOR 2 CIRCUIT LOW


Input signal circuit of TCM to ATF temperature sensor 2 is open or shorted.



WIRING DIAGRAM:

B54 TCM

B11

T4

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2

5 6 7 8

3 4

9 10 11 12

T6

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T5

TRANSMISSION

T6

AT-01628

5AT(diag)-120

1

2

3

4

5



Step Check







(B54) No. 13 — (B11) No. 12:

(B54) No. 11 — (B11) No. 6:


Ω

?

Yes

Go to step 2.

No







°

C (176

°

F).

NOTE:


°

C (32

°



Ω

?




(T4) No. 6 — (T4) No. 12:




(T4) No. 6 — (T4) No. 12:



(B54) No. 11 (+) — (B54) No. 13 (

−

):


Go to step 4.


CHECK INPUT SIGNAL FOR TCM.



°

C (176

°

F).

NOTE:


°

C (32

°



Monitor?


Go to step 3.

Go to step 6.

Even if the SPORT indicator lights blinks, the system is in normal condition. A temporary poor contact of connector or harness may be the cause. Repair harness or contact in the ATF temperature sensor and transmission connector.

Go to step 7.

Go to step 7.

Go to step 5.

Go to step 8.

5AT(diag)-121



6

7

8

Step





OFF)


Select Monitor.

Check




BODY.






Ω

?

NOTE:


5) Drain the ATF.

CAUTION:





(T4) No. 12 — (T5) No. 1:

(T4) No. 6 — (T6) No. 2:


Check poor contact of ATF temperature sensor

1 circuit.

Is there poor contact?

Yes No


Go to step 8.


<Ref. to 5AT-58,

Control Valve

Body.>



Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-122



AL:DTC P1717 ATF TEMP. SENSOR 2 CIRCUIT HIGH


Input signal circuit of TCM to ATF temperature sensor 2 is open or shorted.



WIRING DIAGRAM:

B54 TCM

B11

T4

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B11

5

1 2

6 7

3 4

8

9 10 11 12

13 14 15 16

17 18 19 20

T5

1 2

5 6 7 8

3 4

9 10 11 12

T6

1 2 3

7

4 5

8 9 10 11 12 13 14

6

15 16

T5

TRANSMISSION

T6

AT-01628

5AT(diag)-123

4

5



1

2

3

Step Check





3) Measure the resistance of harness between TCM connector and chassis ground.


(B54) No. 13 — (B11) No. 12:

(B54) No. 11 — (B11) No. 6:


M

Ω

?

Yes

Go to step 2.

No







°

C (176

°

F).

NOTE:


°

C (32

°



Ω

?




(T4) No. 6 — (T4) No. 12:




(T4) No. 6 — (T4) No. 12:



(B54) No. 11 (+) — (B54) No. 13 (

−

):


Go to step 4.





°

C (176

°

F).

NOTE:


°

C (32

°



Monitor?


Go to step 3.

Go to step 6.


Go to step 7.

Go to step 7.

Go to step 5.

Go to step 8.

5AT(diag)-124



6

7

8

Step





OFF)


Select Monitor.

Check




BODY.






M

Ω

?

NOTE:


5) Drain the ATF.

CAUTION:








Check poor contact of ATF temperature sensor

1 circuit.

Is there poor contact?

Yes No


Go to step 8.


<Ref. to 5AT-58,

Control Valve

Body.>



Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

AM:DTC P1718 AT CAN COMMUNICATION CIRCUIT

NOTE:

For DTC P1718 AT CAN Communication circuit, Refer to “LAN System”. <Ref. to LAN(diag)-14, READ DI-

AGNOSTIC TROUBLE CODE (DTC), OPERATION, Subaru Select Monitor.>

5AT(diag)-125



AN:DTC P1760 LATERAL ACCELERATION SENSOR PERFORMANCE PROB-

LEM


Faulty lateral G sensor output voltage

WIRING DIAGRAM:

A: B54

B: B55

TCM

A: B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B: B55

1 2 3 4

10 11 12

19 20 21

13

5 6

14 15

7 8 9

16 17 18

22 23 24

B359

1 2 3

B359

G SENSOR

AT-01634

5AT(diag)-126

4

5

6

7

1

2

3

8

9

10



Step

CHECK OUTPUT OF LATERAL G SENSOR

USING SUBARU SELECT MONITOR.

1) Select {Current Data Display & Save} in

Subaru Select Monitor.

2) Read the Subaru Select Monitor display.

Check

Is the value on the monitor display 2.3 — 2.7 V when the vehicle is on a level?

Yes

Go to step 2.

No

Go to step 7.




2) Remove the console box.

3) Remove the lateral G sensor from vehicle.

(Do not disconnect connector.)




6) Read the Subaru Select Monitor display.



Read the Subaru Select Monitor display.

CHECK LATERAL G SENSOR.



3) Connect the connector to lateral G sensor.

4) Connect the connector to ABSCM&H/U.


6) Measure the voltage between lateral G sensor connector terminals.


(B359) No. 3 (+) — No. 2 (

−

):

Is the value on the monitor display 3.3 — 4.3 V when lateral

G sensor is inclined to the right to 90

°

?

Go to step 3.

Replace the lateral G sensor.

<Ref. to 5AT-63,

Lateral G Sensor.>

CHECK POOR CONTACT IN CONNECTOR.


CHECK ABSCM&H/U.


2) Erase the memory.

3) Perform the inspection mode.

4) Read the DTC.

Is the value on the monitor display 0.7 — 1.7 V when lateral

G sensor is inclined to the left to 90

°

?

Go to step 4.

Is there poor contact in connector between TCM and the lateral G sensor?


Is the same DTC displayed?

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


<Ref. to 5AT-63,

Lateral G Sensor.>

Go to step 5.

Go to step 6.

CHECK OTHER DTC DETECTION.

Is any other DTC displayed?


DTC.

Go to step 8.


CHECK OPEN CIRCUIT IN LATERAL G SEN-

SOR OUTPUT HARNESS AND GROUND

HARNESS.



3) Measure the resistance between TCM connector terminals.


(B54) No. 13 — (B55) No. 6:

Is the resistance 5.0 — 6.0 k

Ω

?

Repair the harness connector between lateral G sensor and TCM.

Is the voltage 2.3 — 2.7 V when the lateral G sensor is horizontal?

Go to step 9.


<Ref. to 5AT-63,

Lateral G Sensor.>


Measure the voltage between lateral G sensor connector terminals.


(B359) No. 3 (+) — No. 2 (

−

):

Is the voltage 3.3 — 4.3 V when lateral G sensor is inclined to the right to 90

°

?




(B359) No. 3 (+) — No. 2 (

−

):

Is the voltage 0.7 — 1.7 V when lateral G sensor is inclined to the left to 90

°

?

Go to step 10.

Go to step 11.


<Ref. to 5AT-63,

Lateral G Sensor.>


<Ref. to 5AT-63,

Lateral G Sensor.>

5AT(diag)-127



11

12

Step






5) Read the DTC.


Check Yes No


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Go to step 12.



DTC.


5AT(diag)-128



AO:DTC P1761 LATERAL ACCELERATION SENSOR CIRCUIT LOW



WIRING DIAGRAM:

A: B54

B: B55

TCM

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B: B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B359

1 2 3

B359

G SENSOR

1

2

Step





2) Read the lateral G sensor output on the

Subaru Select Monitor display.



position?

Check

Is the value on the monitor display 2.3 — 2.7 V when the lateral G sensor is in horizontal


Yes

Go to step 2.


No

AT-01634

Go to step 6.

Go to step 3.

5AT(diag)-129



3

4

5

6

7

8

9

10

11

Step





4) Read the DTC.

Check Yes


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No

Go to step 4.




DTC.

Go to step 6.




HARNESS.





(B54) No. 13 — (B55) No. 6:


Ω

?


CHECK GROUND SHORT OF HARNESS.





M

Ω

?

Go to step 7.

Repair the harness between lateral G sensor and

TCM.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>


<Ref. to 5AT-63,

Lateral G Sensor.>





4) Connect the connector to the TCM.




(B359) No. 3 (+) — No. 2 (

−

):





(B359) No. 3 (+) — No. 2 (

−

):


°

?

Go to step 8.

Go to step 9.


<Ref. to 5AT-63,

Lateral G Sensor.>




(B359) No. 3 (+) — No. 2 (

−

):


°

?

CHECK TCM.





5) Read the DTC.


Go to step 10.


<Ref. to 5AT-63,

Lateral G Sensor.>


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Go to step 11.



DTC.


5AT(diag)-130



AP:DTC P1762 LATERAL ACCELERATION SENSOR CIRCUIT HIGH



WIRING DIAGRAM:

A: B54

B: B55

TCM

A: B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

B: B55

1 2 3 4

10 11 12 13

19 20 21

5 6

14 15

7 8 9

16 17 18

22 23 24

B359

1 2 3

B359

G SENSOR

AT-01634

5AT(diag)-131



1

2

3

4

5

6

7

8

9

10

11

Step





2) Read the lateral G sensor output on the

Subaru Select Monitor display.

Is the value on the monitor display 2.3 — 2.7 V when the lateral G sensor is in horizontal position?

Check

CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in connector between TCM and the lateral G sensor?

Yes

Go to step 2.






4) Read the DTC.


CHECK CONDITIONAL INFORMATION

WHEN FAULTY.

Read the lateral G sensor output on the Subaru Select Monitor display.


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

No

Go to step 5.

Go to step 3.

Go to step 4.



DTC.


Is the reading indicated on monitor display 4.65 V or more?

Go to step 6.

Go to step 12.

Repair the harness connector between lateral G sensor and

ABSCM&H/U.



HARNESS.





(B55) No. 5 — No. 1:


Ω

?

Go to step 7.


Go to step 8.

CHECK BATTERY SHORT OF HARNESS.



3) Disconnect the connector from lateral G sensor.





−

):

CHECK BATTERY SHORT OF HARNESS.





−

):


Go to step 9.

CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in connector between TCM and the lateral G sensor?



TCM.


TCM.

Go to step 10.

CHECK TCM.




4) Read the DTC.



Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Go to step 11.



DTC.


5AT(diag)-132



12

13

14

15

16

17

18

19

Step

CHECK INPUT VOLTAGE OF LATERAL G

SENSOR.




(Do not disconnect connector.)




(B359) No. 1 (+) — No. 2 (

−

):

Check Yes


Go to step 13.



HARNESS.





(B55) No. 5 — No. 6:


Ω

?



2) Connect the connector to the TCM.




(B359) No. 3 (+) — No. 2 (

−

):





(B359) No. 3 (+) — No. 2 (

−

):


°

?

Go to step 14.

Go to step 15.

Go to step 16.

No




<Ref. to 5AT-63,

Lateral G Sensor.>


<Ref. to 5AT-63,

Lateral G Sensor.>




(B359) No. 3 (+) — No. 2 (

−

):


°

?








4) Read the DTC.


Go to step 17.



<Ref. to 5AT-63,

Lateral G Sensor.>

Go to step 18.


Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Go to step 19.



DTC.


AQ:DTC P1798 GEAR 1 ENGINE BRAKE

NOTE:

Refer to DTC P0773 for diagnostic procedure. <Ref. to 5AT(diag)-94, DTC P0773 SHIFT SOLENOID “E”

ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

5AT(diag)-133



AR:DTC P1799 INTERLOCK


Perform the interlock judgment when the oil pressure switch pattern detect the specified interlock patterns for more than 2 seconds other than shifting.


Locked to 2nd, 4th or 5th gear.

1

2

3

Step




Is DTC of oil pressure switch detected?

Check

Is the DTC related to solenoid function or solenoid circuit detected?


Yes


DTC.

No

Go to step 2.


DTC.


Go to step 3.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

5AT(diag)-134



AS:DTC P1817 SPORTS MODE SWITCH CIRCUIT (MANUAL SWITCH)


Input signal circuit of SPORT shift switch is open or shorted.


• Can not set to manual mode.

• “SPORT” light illuminates when shifting to “N”

→

“D” range.

WIRING DIAGRAM:

E

SBF-1 SBF-7

IGNITION

SWITCH

SPORT

COMBINATION

METER i10

JOINT

CONNECTOR i77

A: i84

C: B281

B: B280

BODY INTEGRATED UNIT i10

1 2 3 4 5

11 12 13 14 15 16

6 7 8 9 10

17 18 19 20 21 22

i77

1 2 3 4 5 6 7 8 9 10 11 12

A: i84

1 2 3 4 5 6 7 8

9 10

24 25

11 12 13 14 15

26 27 28 29

16 17 18 19 20 21 22 23

30 31 32 33 34 35

B: B280

1

8

2

9

3

21 22 23 24 25

4 5 6 7

10 11 12 13 14 15 16 17 18 19 20

26 27 28 29 30

B54

1 2 3 4

10 11 12

19 20 21

5 6 7 8 9

13 14 15 16 17 18

22 23 24

B116

1

5

2

6 7 8

3 4

9 10

C: B281

1

8

2

9

20 21

3 4

24 25 26

5 6 7

10 11 12 13 14 15 16 17 18 19

22 23 27 28

SPORT

SHIFT MODE

SWITCH

SELECT

LEVER

B116

E

B54 TCM

AT-01539

5AT(diag)-135



1

2

3

4

5

6

7

8

Step Check




OFF)

3) Read the DTC of body integrated unit using

Subaru Select Monitor. <Ref. to LAN(diag)-14,


Is DTC displayed?


SIGNAL.


2) Read the TIP mode SW data of body integrated unit using Subaru Select Monitor. <Ref. to LAN(diag)-14, OPERATION, Subaru Select

Monitor.>

Is OFF displayed?

Yes


DTC.

Go to step 3.

No

Go to step 2.

Go to step 7.


SIGNAL.

1) Shift the select lever from “P” to “D” range.


Monitor.>

Is the indication on each range

OFF?

Go to step 4.


SIGNAL.

1) Shift the select lever to manual mode.

2) Shift the select lever to other than “D” range.


Monitor.>

Is OFF displayed?

Go to step 5.


Replace the select lever assembly.

<Ref. to CS-7,

Select Lever.>


<Ref. to CS-7,

Select Lever.>


Sensor Circuit (PRNDL Input) and AT CAN communication circuit displayed?

Perform the diagnosis according to each DTC.

Go to step 6.

CHECK TCM INPUT SIGNAL.

1) Shift the select lever from “P” to “D” range.

2) Read the TIP mode SW data of TCM using



Is the indication on each range

OFF?

Even if the SPORT indicator lights blinks, the circuit is in normal condition. A temporary poor contact of connector or harness may be the cause.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

CHECK HARNESS BETWEEN BODY INTE-

GRATED UNIT AND SPORT SHIFT SWITCH.


2) Disconnect harness connector from body integrated unit and select lever.

3) Measure the harness resistance between the body integrated unit and chassis ground.




M

Ω

?

Go to step 8.

Repair the short circuit of harness between the body integrated unit and

SPORT shift switch.

CHECK SPORT SHIFT SWITCH.


2) Measure the resistance between harness connector terminals of SPORT shift switch.

Terminals

(B116) No. 7 — No. 8:


M

Ω

?



<Ref. to CS-7,

Select Lever.>

5AT(diag)-136



AT:DTC P1840 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH A CIR-

CUIT


Front brake oil pressure switch malfunction.


Excessive shift shock

NOTE:

Refer to DTC P0751 for diagnostic procedure. <Ref. to 5AT(diag)-65, DTC P0751 SHIFT SOLENOID “A”

PERFORMANCE OR STUCK OFF, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

AU:DTC P1841 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH B CIR-

CUIT


Low coast brake oil pressure switch malfunction.


Excessive shift shock

NOTE:

Refer to DTC P0771 for diagnostic procedure. <Ref. to 5AT(diag)-91, DTC P0771 SHIFT SOLENOID “E”


AV:DTC P1842 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH C CIR-

CUIT


Input clutch oil pressure switch malfunction.



NOTE:

Refer to DTC P0756 for diagnostic procedure. <Ref. to 5AT(diag)-72, DTC P0756 SHIFT SOLENOID “B”


AW:DTC P1843 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH D CIR-

CUIT


Direct clutch oil pressure switch malfunction.



NOTE:

Refer to DTC P0766 for diagnostic procedure. <Ref. to 5AT(diag)-85, DTC P0766 SHIFT SOLENOID “D”


AX:DTC P1844 TRANSMISSION FLUID PRESSURE SENSOR/SWITCH E CIR-

CUIT


High & low reverse clutch oil pressure switch malfunction.



NOTE:

Refer to DTC P0761 for diagnostic procedure. <Ref. to 5AT(diag)-78, DTC P0761 SHIFT SOLENOID “C”


5AT(diag)-137

Diagnostic Procedure without Diagnostic Trouble Code (DTC)


15.Diagnostic Procedure without Diagnostic Trouble Code (DTC)

A: CHECK SPORT SHIFT SWITCH

DIAGNOSIS:

Input signal circuit of SPORT shift switch is open or shorted.


Does not shift on manual mode.

WIRING DIAGRAM:

A: B280

B: B281


TB

TB

AT SELECT

LEVER

B116

B68

ROLL CONNECTOR

E

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21

22

23 24

ST3

1 2 3

6 7 8

4 5

9 10

TCM

B54

ST3

E

A: B280

1

8

21

2 3 4 5 6 7

9 10 11 12 13 14 15

22 23 24 25

16 17 18

26 27

19 20

28 29 30

B68

1 2 3

4 5 6 7 8

LH RH

STEERING SHIFT SWITCH

B: B281

1 2 3 4 5 6 7

8 9

20 21

10 11 12 13 14 15

22 23 24 25

16 17 18 19

26 27 28

B116

1 2 3 4

5 6 7 8 9 10

AT-01545

5AT(diag)-138

2

3

6

7

1

4

5

8

9

10



Step Check Yes


1) Perform the ON/OFF operation on SPORT shift switch.

2) Read the data of SPORT shift switch signal using Subaru Select Monitor.

Both ON/OFF can be detected normally?

Go to step 2.

No

Go to step 7.

CHECK DTC OF BODY INTEGRATED UNIT. Is DTC of CAN detected?


DTC.

Go to step 3.

CHECK TCM.

1) Perform the ON/OFF operation on SPORT shift switch.

2) Read the data of SPORT shift switch signal using Subaru Select Monitor.

Both ON/OFF can be detected normally?


CHECK TIP INDICATOR ON COMBINATION

METER.

Is the TIP indicator OK?


CHECK DTC OF METER.

CHECK SPORT SHIFT SWITCH GROUND

CIRCUIT.


2) Disconnect the connector from SPORT shift switch.

3) Measure the resistance of harness between SPORT shift switch connector and chassis ground.



Is DTC of CAN detected?

Is DTC of CAN detected?


Ω

?

Go to step 6.




DTC.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Replace the meter.


DTC.

Go to step 8.

Repair the open circuit in harness between SPORT shift switch and chassis ground.


Measure the resistance between the SPORT shift switch terminals.


(B116) No. 6 — No. 5:



2) Measure the resistance between the

SPORT shift switch terminals.


(B116) No. 6 — No. 5:


M

Ω


Ω

?

?


BODY INTEGRATED UNIT AND SPORT

SHIFT SWITCH.


2) Measure the resistance of harness between the body integrated unit and SPORT shift switch connector.


(B116) No. 5 — (B281) No. 15:


Ω

?

Go to step 9.

Go to step 10.

Go to step 11.

Replace the guide plate assembly.


Repair the open circuit in harness between SPORT shift switch connector and TCM connector, or poor contact in coupling connector.

5AT(diag)-139



11

12

13

14

15

16

17

Step Check



SHIFT SWITCH.






M

Ω

?

Yes

Go to step 12.


Go to step 13.




OFF).

3) Measure the signal voltage for TCM.



−

):


Go to step 26.


1) Shift and hold the select lever to up side.

2) Measure the signal voltage for TCM.



−

):

CHECK SPORT SHIFT SWITCH GROUND

CIRCUIT.


2) Disconnect the connector from SPORT shift switch.





Measure the resistance between the SPORT shift switch terminals.


(B116) No. 10 — No. 9:


Ω

?


M

Ω

?

Go to step 15.

Go to step 16.



2) Measure the resistance between the

SPORT shift switch terminals.


(B116) No. 10 — No. 9:


Ω

?



SHIFT SWITCH.


2) Measure the resistance of harness between the body integrated unit and SPORT shift switch connector.


(B116) No. 9 — (B281) No. 25:


Ω

?

Go to step 17.

Go to step 18.

No

Repair the short circuit in harness between SPORT shift switch connector and TCM connector.

Replace the body integrated unit.

<Ref. to SL-46,

Body Integrated

Unit.>


<Ref. to SL-46,

Body Integrated

Unit.>

Repair the open circuit in harness between SPORT shift switch and chassis ground.



Repair the open circuit in harness between SPORT shift switch connector and body integrated unit connector, or poor contact in coupling connector.

5AT(diag)-140

18

19

20

21

22

23

24



Step Check



SHIFT SWITCH.

1) Disconnect the steering roll connector.





M

Ω

?

Yes

Go to step 19.

CHECK THE INPUT SIGNAL TO BODY INTE-

GRATED UNIT.



OFF).

3) Check the signal voltage for body integrated unit.



−

):


Go to step 20.

CHECK THE INPUT SIGNAL TO BODY INTE-

GRATED UNIT.

1) Shift and hold the select lever to up side.

2) Check the signal voltage for body integrated unit.



−

):


Go to step 26.

Go to step 22.

CHECK STEERING SHIFT SWITCH

GROUND CIRCUIT.


2) Disconnect the connector from steering roll connector.

3) Measure the resistance of harness between steering roll connector and chassis ground.


(ST3) No. 3 — Chassis ground:


Ω

?

CHECK STEERING SHIFT SWITCH.

Measure the resistance between steering roll connector terminals.


(ST3) No. 1 — No. 3:


M

Ω

?

Go to step 23.

CHECK STEERING SHIFT SWITCH.

1) Press and hold the steering shift switch to + side.

2) Measure the resistance between the steering shift switch terminals.


(ST3) No. 1 — No. 3:


Ω

?


BODY INTEGRATED UNIT AND STEERING

ROLL CONNECTOR.


2) Measure the resistance of harness between the body integrated unit connector and steering roll connector.


(B281) No. 15 — (B68) No. 2:


Ω

?

Go to step 24.

Go to step 25.

No

Repair the short circuit of harness between the

SPORT shift switch connector and body integrated unit connector.


<Ref. to SL-46,

Body Integrated

Unit.>


<Ref. to SL-46,

Body Integrated

Unit.>

Repair the open circuit in harness between steering roll connector and chassis ground.

Replace the steering roll connector or steering shift switch. Or repair the poor contact in connector.

Replace the steering roll connector or steering shift switch. Or repair the poor contact in connector.

Repair the open circuit in harness between body integrated unit connector and steering roll connector, or poor contact in connector.

5AT(diag)-141



25

26

Step Check


BODY INTEGRATED UNIT AND STEERING

ROLL CONNECTOR.


2) Measure the resistance of harness between the body integrated unit connector and steering roll connector.


(B281) No. 25 — (B68) No. 6:


Ω

?


Yes

Go to step 26.

Is there poor contact in SPORT shift switch circuit?


No

Repair the open circuit in harness between body integrated unit connector and steering roll connector, or poor contact in connector.

A temporary poor contact of SPORT shift switch connector or harness

5AT(diag)-142



B: CHECK SPORT SHIFT INDICATOR LIGHT

DIAGNOSIS:

Output signal circuit of SPORT shift indicator light is open or shorted.


• SPORT shift indicator light does not illuminate or remains illuminated.

• SPORT shift indicator light display does not change.

WIRING DIAGRAM:

E

SPORT SHIFT

INDICATOR

COMBINATION

METER i10

JOINT

CONNECTOR i77

BODY INTEGRATED

UNIT

A: i84

B: B280 i10

1 2 3 4 5

11 12 13 14 15 16

6 7 8 9 10

17 18 19 20 21 22

i77

1 2 3 4 5 6 7 8 9 10 11 12

A: i84

1

9

2

24 25

3 4

26 27 28 29

5 6

30 31 32 33

7 8

10 11 12 13 14 15 16 17 18 19 20 21 22 23

34 35

B: B280

1 2 3 4 5 6 7

8 9 10 11 12 13

21 22 23 24 25

14 15

26

16 17 18 19 20

27 28 29 30

B54

1 2 3 4 5 6 7 8 9

10 11 12

19 20 21

13 14 15 16 17 18

22 23 24

B54 TCM

AT-01626

5AT(diag)-143



1

2

3

4

5

6

Step


Check DTC of body integrated unit.

Check Yes



DTC.

No

Go to step 2.

CHECK TCM.

Check DTC of TCM.

CHECK TCM.




OFF)


ON.

5) Shift the select lever to manual mode side, and then shift down the select lever.

6) Read the indicator.



DTC.

Is gear position 1 and “

▲

” displayed?

Go to step 4.

CHECK TCM.

1) Shift up the select lever.

2) Read the indicator.

Is gear position 2 and “

▼

” displayed?

Go to step 5.


Read the data of gear position using Subaru

Select Monitor.

Is SPORT shift gear position

2?

Go to step 3.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Refer to “General

Diagnostic Table”.

<Ref. to 5AT(diag)-

147, General Diagnostic Table.>


<Ref. to SL-46,

Body Integrated

Unit.>

CHECK COMBINATION METER.

Is the SPORT shift indicator

OK?

Refer to “General


<Ref. to 5AT(diag)-




5AT(diag)-144



C: CHECK BUZZER

DIAGNOSIS:

Output signal circuit of buzzer is open or shorted.


Buzzer remains beeping.

WIRING DIAGRAM:

E

SBF-1 SBF-7

IGNITION

SWITCH

A: i84

B: B280

JOINT

SPORT

SHIFT

BUZZER

COMBINATION

METER i10

CONNECTOR i77

BODY INTEGRATED UNIT i10

1 2 3 4 5

11 12 13 14 15 16

6 7 8 9 10

17 18 19 20 21 22

i77

1 2 3 4 5 6 7 8 9 10 11 12

A: i84

1

9

2

24 25

3 4

26 27 28 29

5 6

30 31 32 33

7 8

10 11 12 13 14 15 16 17 18 19 20 21 22 23

34 35

B: B280

1

8

2

9

3

21 22 23 24 25

4 5 6 7

10 11 12 13 14 15 16 17 18 19 20

26 27 28 29 30

B54

1 2 3 4

10 11 12 13

5 6

14 15

7

16

8

17

9

18

19 20 21 22 23

24

B54 TCM

AT-01627

5AT(diag)-145



1

2

3

4

5

Step


Check DTC of body integrated unit.

Check Yes

Is DTC of CAN communication displayed?


DTC.

No

Go to step 2.

CHECK TCM.

Check DTC of TCM.

CHECK BUZZER STOP.

Disconnect the connector (B54).





OFF)


ON.

5) Read the data of SPORT shift buzzer using


CHECK COMBINATION METER.

Is DTC of CAN communication displayed?


DTC.

Does the buzzer stop?

Go to step 5.

Replace the TCM.

<Ref. to 5AT-61,


(TCM).>

Go to step 4.

Is the SPORT shift buzzer display “ON”?

Is the buzzer OK?


<Ref. to SL-46,

Body Integrated

Unit.>



Refer to “General


<Ref. to 5AT(diag)-




5AT(diag)-146

General Diagnostic Table


16.General Diagnostic Table

A: INSPECTION

Shifting vehicle speed is low on “D” range.

Shifting vehicle speed is high on “D” range.

Excessive shock. (“N”

→

Symptom

“D” range)

Excessive shift shock on 1st of “D” range

→

2nd of “D” range or

“1st of manual mode”

→

“2nd of manual mode”.

Excessive shift shock on 2nd of “D” range

→

3rd of “D” range or

“2nd of manual mode”

→

“3rd of manual mode”.

Excessive shift shock on 3rd of “D” range

→

4th of “D” range or

“3rd of manual mode”

→

“4th of manual mode”.

Problem parts

• Vehicle speed sensor 1 and Vehicle speed sensor 2

• Accelerator pedal position sensor

• Throttle position sensor

• ATF temperature sensor

• CAN communication signal





• Brake switch signal

• Lateral G sensor


• Engine idle speed

• Engine speed signal



• Control cable adjustment


• Oil pressure switch 1 and Front brake solenoid valve


• Fluid level and condition

• TCM power supply

• PVIGN relay




• Oil pressure switch 4 and Direct clutch solenoid valve



• Turbine speed sensor






• Oil pressure switch 5 and High & low reverse clutch solenoid valve









• Oil pressure switch 3 and Input clutch solenoid valve






5AT(diag)-147



Symptom

Excessive shift shock on 4th of “D” range

→

5th of “D” range or

“4th of manual mode”

→


Excessive shock at kick down.

Excessive shock at shift up.

Excessive shock at lock up.

Excessive shock at engine brake.

Judder is occurred at lock up.

Noise at “R”, “N” and “D” range.

Hold at “D” range or 1st on manual mode.

Problem parts
































• Lock up solenoid valve








• Line pressure

• Low coast brake solenoid valve








• ATF temperature sensor 1 and 2






• Direct clutch solenoid valve

• Line pressure

• Up switch signal



5AT(diag)-148


AUTOMATIC TRANSMISSION (DIAGNOSTICS) of manual mode”

→

Symptom

Hold at “D” range or 2nd on manual mode.

Hold at “D” range or 3rd on manual mode.

Hold at “D” range or 4th on manual mode.

Hold at “D” range or 5th on manual mode.

Gear does not shift 1st of “D” range

“2nd of manual mode”.

Gear does not shift 2nd of “D” range

→

3rd of “D” range or “2nd of manual mode”

→

“3rd of manual mode”.

Gear does not shift 3rd of “D” range of manual mode”

→

→

→

2nd of “D” range or “1st

4th of “D” range or “3rd


Problem parts




• Line pressure


• Down switch signal





• Line pressure











• Front brake solenoid valve

• Line pressure






• PVIGN relay




• Line pressure







• Line pressure

• Up switch






• Line pressure








• Line pressure




5AT(diag)-149



Symptom

Gear does not shift 4th of “D” range of manual mode”

→

→

5th of “D” range or “4th


Gear does not shift down to 4th on “D” range or manual mode.

Gear does not shift down to 3rd on “D” range or manual mode.

Gear does not shift down to 2nd on “D” range or manual mode.

Gear does not shift down to 1st on “D” range or manual mode.

No lock-up occurs.

No shift shock occurred when shifting 1st of “D” range

→

2nd of

“D” range or “1st of manual mode”

→

“2nd of manual mode”. Or clutch slipping occurred.

Problem parts







• Line pressure








• Line pressure








• Line pressure





• PVIGN relay



• Oil pressure switch 5 and High & low reverse clutch solenoid

• Line pressure







• Line pressure





• Line pressure







• Brake switch signal

• Range signal




• Line pressure


5AT(diag)-150



Symptom

No shift shock occurred when shifting 2nd of “D” range

→

3rd of

“D” range or “2nd of manual mode”

→

“3rd of manual mode”. Or clutch slipping occurred.

No shift shock occurred when shifting 3rd of “D” range

→

4th of

“D” range or “3rd of manual mode”

→

“4th of manual mode”. Or clutch slipping occurred.

No shift shock occurred when shifting 4th of “D” range

→

5th of

“D” range or “4th of manual mode”

→

“5th of manual mode”. Or clutch slipping occurred.

Engine skids when shifting 5th of “D” range or “5th of manual mode” occurred.

→

→

4th of “D” range

“4th of manual mode”. Or slipping

Engine skids when shifting 4th of “D” range or “4th of manual mode” occurred.

→

→

3rd of “D” range

“3rd of manual mode”. Or slipping

Engine skids when shifting 3rd of “D” range

→

2nd of “D” range or “3rd of manual mode”

→

“2nd of manual mode”. Or slipping occurred.

Engine skids when shifting 2nd of “D” range

→

1st of “D” range or “2nd of manual mode”

→

“1st of manual mode”. Or slipping occurred.

Engine brake does not function at 5th

Engine brake does not function at 4th

→

→

4th of manual mode.

3rd of manual mode.

Problem parts




• Line pressure






• Line pressure






• Line pressure







• Line pressure







• Line pressure







• Line pressure






• Line pressure



• Inhibitor switch



• Manual mode switch

• Oil pressure switch 1






• Oil pressure switch 1 and Oil pressure switch 3


5AT(diag)-151



Engine skids when start driving (1st) the vehicle. Or slipping occurred.

Symptom

Engine brake does not function at 3rd

→

2nd of manual mode.

Engine brake does not function at 2nd

→

1st of manual mode.

Excessive acceleration failure on “D” range.

Excessive acceleration failure on “R” range.

Engine skids when driving at 2nd. Or slipping occurred.

Engine skids when driving at 3rd. Or slipping occurred.

Engine skids when driving at 4th. Or slipping occurred.

Problem parts














• Line pressure






• Vehicle speed sensor 1, 2


• Line pressure







• Vehicle speed sensor 1, 2


• Line pressure





• Line pressure






• Line pressure






• Line pressure





5AT(diag)-152



Symptom

5Engine skids when driving 5th. Or slipping occurred.

Slip at lock up.

Maximum vehicle speed is low.

There is completely no creep.

Excessive large creep.

Vehicle cannot be parking condition on “P” range. Parking condition is not released though shifting to other ranges.

Vehicle can drive on “P” range.

Vehicle can drive on “N” range.

Vehicle cannot drive at any range.

Vehicle cannot drive on “D” range.

Vehicle cannot drive on “R” range.

Problem parts


• Line pressure






• Line pressure






• Line pressure




• Direct clutch solenoid valve

• Vehicle speed sensor 1 and 2





• Line pressure









• Line pressure




• Line pressure


• Line pressure



• Loosing or damaging of propeller shaft.

• Loosing or damaging of drive shaft.


• Line pressure






• Line pressure





5AT(diag)-153



Symptom

Engine cannot start on “P” or “N” range

Engine start other than “P” or “N” range

Engine stalls.

Engine stalls when shifting to “N”

→

“D” and “R” range.

Problem parts

• Key switch and Starter



• CAN communication line

• TCM

• Key switch and Starter



• TCM





• Line pressure





• Line pressure

5AT(diag)-154

SUBARU 4AT, 4AT(diag), 5AT, 5AT(diag) Automatic Transmission, 5MT Manual Transmission, CL Clutch System Service Manual

Assistant Bot

AUTOMATIC TRANSMISSION

(DIAGNOSTICS)

5AT(diag)

1. Basic Diagnostics Procedure

2. Check List for Interview

3. General Description

4. Electrical Component Location

5. Transmission Control Module (TCM) I/O Signal

6. Subaru Select Monitor

7. Read Diagnostic Trouble

Code (DTC)

8. Inspection Mode

9. Clear Memory Mode

10.Learning Control

11.SPORT Indicator Light Display

12.Diagnostic Procedure for Select Monitor Communication

13.List of Diagnostic Trouble Code (DTC)

14.Diagnostic Procedure with Diagnostic Trouble Code (DTC)

15.Diagnostic Procedure without Diagnostic Trouble Code (DTC)

16.General Diagnostic Table

Key Features

Frequently Answers and Questions

What kind of information is included in this service manual?

Who is this service manual intended for?

Why is it important to use SUBARU genuine parts?

Related manuals

Table of contents

SUBARU 4AT, 4AT(diag), 5AT, 5AT(diag) Automatic Transmission, 5MT Manual Transmission, CL Clutch System Service Manual

Assistant Bot

AUTOMATIC TRANSMISSION

(DIAGNOSTICS)

5AT(diag)

1. Basic Diagnostics Procedure

2. Check List for Interview

3. General Description

4. Electrical Component Location

5. Transmission Control Module (TCM) I/O Signal

6. Subaru Select Monitor

7. Read Diagnostic Trouble

Code (DTC)

8. Inspection Mode

9. Clear Memory Mode

10.Learning Control

11.SPORT Indicator Light Display

12.Diagnostic Procedure for Select Monitor Communication

13.List of Diagnostic Trouble Code (DTC)

14.Diagnostic Procedure with Diagnostic Trouble Code (DTC)

15.Diagnostic Procedure without Diagnostic Trouble Code (DTC)

16.General Diagnostic Table

Key Features

Frequently Answers and Questions

What kind of information is included in this service manual?

Who is this service manual intended for?

Why is it important to use SUBARU genuine parts?

Related manuals

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LEGACY

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6MT(diag)

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Table of contents