Daewoo | DTC-150 | Specifications | Daewoo DTC-150 Specifications

SECTION : 5A2
AISIN AUTOMATIC TRANSAXLE
CAUTION : Disconnect the negative battery cable before removing or installing any electrical unit or when a tool
or equipment could easily come in contact with exposed electrical erminals. Disconnecting this cable will help
prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise noted.
TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–3
General Specifications . . . . . . . . . . . . . . . . . . . . 5A2–3
Transaxle Gear Ratio . . . . . . . . . . . . . . . . . . . . . . 5A2–3
Fluid Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–3
Line Pressure Specification . . . . . . . . . . . . . . . . 5A2–3
Fastener Tightening Specifications . . . . . . . . . . 5A2–4
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–5
Special Tools Table . . . . . . . . . . . . . . . . . . . . . . . 5A2–5
SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . 5A2–8
Transmission Control Module (1 of 4) . . . . . . . . 5A2–8
Transmission Control Module (2 of 4) . . . . . . . . 5A2–9
Transmission Control Module (3 of 4) . . . . . . . 5A2–10
Transmission Control Module (4 of 4) . . . . . . . 5A2–11
Shift Mode Diagram . . . . . . . . . . . . . . . . . . . . . . 5A2–12
COMPONENT LOCATOR . . . . . . . . . . . . . . . . . . 5A2–17
Shift Select Control . . . . . . . . . . . . . . . . . . . . . . 5A2–17
Automatic Transaxle Components . . . . . . . . . 5A2–18
Bearing and Races Installation Position
Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–24
DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–25
Electrical Connector View . . . . . . . . . . . . . . . . . 5A2–25
Wiring Harness and Connector Inspection . . . 5A2–27
Road Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–27
Function Check . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–28
Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–30
On–Vehicle Repair (Matrix Chart) . . . . . . . . . . 5A2–34
DIAGNOSIS TROUBLE CODE DIAGNOSIS . 5A2–36
Diagnosis Trouble Code Chart . . . . . . . . . . . . . 5A2–36
DTC P0562 System Voltage Low . . . . . . . . . . 5A2–37
DTC P0563 System Voltage High . . . . . . . . . . 5A2–40
DTC P0601 Internal Control Module Memory
Checksum Error . . . . . . . . . . . . . . . . . . . . . . . 5A2–43
DTC P0604 Internal Transmission Control Module
(TCM) Random Access Memory (RAM)
Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–45
DTC P0705 Transmission Range (TR) Switch
Circuit Malfunction . . . . . . . . . . . . . . . . . . . . . 5A2–47
DTC P0712 Transmission Fluid Temperature
(TFT) Sensor Circuit Low Input . . . . . . . . . . 5A2–50
DTC P0713 Transmission Fluid Temperature
(TFT) Sensor Circuit High Input . . . . . . . . . . 5A2–53
DTC P0717 Input Shaft Speed (ISS) Sensor
Circuit No Signal . . . . . . . . . . . . . . . . . . . . . . . 5A2–56
DTC P0722 Ouput Shaft Speed (OSS) Sensor
Circuit No Signal . . . . . . . . . . . . . . . . . . . . . . . 5A2–59
DTC P0727 Engine Speed Input Circuit No
Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–62
DTC P0741 Torque Converter Clutch (TCC)
Circuit Stuck Off . . . . . . . . . . . . . . . . . . . . . . . 5A2–65
DTC P0742 Torque Converter Clutch (TCC)
Circuit Stuck On . . . . . . . . . . . . . . . . . . . . . . . 5A2–67
DTC P0743 Torque Converter Clutch (TCC)
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–69
DTC P0748 Pressure Control Solenoid (PCS)
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–72
DTC P0751 Shift Solenoid 1 (SS1) Stuck Off
DTC P0753 Shift Solenoid 1 (SS1) Electrical
DTC P0756 Shift Solenoid 2 (SS2) Stuck Off
DTC P0758 Shift Solenoid 2 (SS2) Electrical
5A2–75
5A2–77
5A2–80
5A2–82
DTC P0785 Timing Solenoid (ST) Electrical . 5A2–85
DTC P1781 Engine Torque Signal Error . . . . . 5A2–88
DTC P1791 Throttle Position Signal Error . . . 5A2–91
DTC P1792 Engine Coolant Temperature (ECT)
Signal Error . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–93
DTC U2105 Can Error . . . . . . . . . . . . . . . . . . . . 5A2–95
MAINTENANCE AND REPAIR . . . . . . . . . . . . . 5A2–97
ON–VEHICLE SERVICE . . . . . . . . . . . . . . . . . . . 5A2–97
Transaxle Fluid Level Checking Procedure . . 5A2–97
Fluid Drain Procedure . . . . . . . . . . . . . . . . . . . . 5A2–97
Locating Fluid Leaks . . . . . . . . . . . . . . . . . . . . .
Case Porosity Repair . . . . . . . . . . . . . . . . . . . . .
Fluid Cooler Flushing . . . . . . . . . . . . . . . . . . . . .
Control Cable Adjustment . . . . . . . . . . . . . . . . .
5A2–98
5A2–98
5A2–99
5A2–99
5A2 – 2IAISIN AUTOMATIC TRANSAXLE
Shift Control Lever Assembly . . . . . . . . . . . . .
Transmission Range (TR) Switch . . . . . . . . .
Shift Control Cable . . . . . . . . . . . . . . . . . . . . . .
Shift Select Cover . . . . . . . . . . . . . . . . . . . . . .
5A2–100
5A2–101
5A2–104
5A2–105
Direct Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–171
Input Shaft Speed (ISS) Sensor . . . . . . . . . .
Output Shaft Speed (OSS) Sensor . . . . . . . .
Transmission Control Module (TCM) . . . . . .
Fluid Cooler Inlet Pipes and Hoses . . . . . . . .
5A2–106
5A2–107
5A2–108
5A2–109
Counter Driven Gear . . . . . . . . . . . . . . . . . . . . 5A2–192
Fluid Cooler Outlet Pipes and Hoses . . . . . . 5A2–110
Transaxle Assembly . . . . . . . . . . . . . . . . . . . . . 5A2–111
UNIT REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–117
GENERAL DESCRIPTION AND SYSTEM
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–218
Major Component Disassembly . . . . . . . . . . . 5A2–117
Major Component Assembly . . . . . . . . . . . . . 5A2–137
Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–167
Electronical Components . . . . . . . . . . . . . . . . 5A2–218
Planetary Ring Gear . . . . . . . . . . . . . . . . . . . . 5A2–178
One–Way Clutch . . . . . . . . . . . . . . . . . . . . . . . 5A2–180
Forward and Reverse Clutch . . . . . . . . . . . . . 5A2–183
Valve Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A2–195
Differential Case . . . . . . . . . . . . . . . . . . . . . . . . 5A2–208
Transaxle Description . . . . . . . . . . . . . . . . . . . 5A2–218
Hydraulic Control System . . . . . . . . . . . . . . . . 5A2–221
Automatic Transaxle System . . . . . . . . . . . . . 5A2–222
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 3
SPECIFICATIONS
GENERAL SPECIFICATIONS
Definition
1.6 DOHC
Transaxle Fluid Type
ISU DEXRON III or ESSO JWS 3309
Transaxle Fluid Capacity
5.77L (6.1 qts)
TRANSAXLE GEAR RATIO
Gear
Ratio
1.6 DOHC
First
2.875
Second
1.568
Third
1.000
Fourth
0.697
Reverse
2.300
Counter
1.020
Differential
3.750
FLUID CAPACITY
Capacity
1.6 DOHC
Transaxle Fluid (dry fill)
5.77L (6.1 qts)
Transaxle Fluid (drain and refill)
2.1L (2.2 qts)
Notice : Fluid capacity (drain and refill) could be changed according to the some condition, therefore be sure to check
the fluid using the oil stick guage.
LINE PRESSURE SPECIFICATION
Application
DAEWOO V–121 BL4
Idling
kg/cm2
Stall
At ”D” range
3.9–4.2
(55–60 psi)
11.3–12.5 kg/cm2 (161–178 psi)
At ”R” range
6.0–6.9 kg/cm2 (85–98 psi)
16.2–18.6 kg/cm2 (230–265 psi)
5A2 – 4IAISIN AUTOMATIC TRANSAXLE
FASTENER TIGHTENING SPECIFICATIONS
Application
NSm
Lb–Ft
Lb–In
Drain Plug
17
13
–
Control Cable Adjusting Nut
8
–
71
Shift Control Lever Assembly Mounting Bolts
8
–
71
Manual Valve Lever Shaft Nut
12
–
106
Transmission Range (TR) Switch Bolts
5.4
–
48
Input Speed Sensor Retaining Bolt
5.4
–
48
Output Speed Sensor Retaining Bolt
7.4
–
65
TCM Retaining Bolts
5
–
44
Fluid Cooler Inlet Pipe Fitting Nut
35
26
–
Fluid Cooler Inlet Pipe Bolt
9
–
80
Inlet Pipe Union Bolt
35
26
–
Fluid Cooler Rear Outlet Pipe Fitting Nut
35
26
–
Fluid Cooler Rear Outlet Pipe Clip Bolt
9
–
80
Front Outlet Pipe Union Bolt
35
26
–
Lower Transaxle–to–Engine Retaining Bolts (a)
73
54
–
Lower Transaxle–to–Engine Retaining Bolts (b)
31
23
–
Lower Transaxle–to–Engine Retaining Bolts (c)
21
15
–
Upper Transaxle–to–Engine Mounting Bolts
73
54
–
Upper Transaxle Mounting Bracket Bolts
60
44
–
Rear Mounting Bracket Bolts
60
44
–
Damping Block Connection Nut and Bolt
80
59
–
Torque Converter Bolts
45
43
–
Screw Plugs
7.4
–
65
Transaxle Apply Clamp Bolt
5.4
–
48
Oil Reservoir Lock Plate Bolts
5.4
–
48
Transaxle Case Plate Bolt
9.8
–
87
Transaxle Housing Bolts
29
22
–
Manual Detent Spring Bolt
9.8
–
87
Parking Lock Pawl Bracket Bolts
7.4
–
65
Planetary Ring Gear Nut (Standard)
9.8
–
87
Planetary Ring Gear Nut (Maximum)
29
22
–
Transaxle Rear Cover Bolts
25
18
–
Oil Pump Bolts
25
18
–
Valve Body Bolts
11
–
97
Oil Strainer Bolts
9.8
–
87
Oil Pan Bolts
7
–
62
Unions
25
18
–
Stator Shaft Bolts
25
18
–
Shift Solenoid Valve Bolts
11
–
97
102
75
–
Differential Case–to–Differential Ring Gear Bolt
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 5
SPECIAL TOOLS
SPECIAL TOOLS TABLE
DAEWOO V–121 BL4
DW260–021–02
Automatic
Transaxle
Overhaul
Fixture
DW240–050
Overdrive
Brake Adapter
DW240–020
Brake/Clutch
Spring Compressor
DW240–060–01
Brake Spring
Compressor
Bolt/Nut
DW240–030
Forward Clutch
Adapter
DW240–060–02
Brake Spring
Compressor
Plate
DW240–040
Direct Clutch
Adapter
DW240–070
1st/Reverse
Brake Adapter
5A2 – 6IAISIN AUTOMATIC TRANSAXLE
DW240–080
2nd Brake Adapter
DW260–031–02
Tranaxle Case
Oil Seal Installer
DW240–090
Planetary Ring
Gear Remover
DW240–120
Measuring Terminal
DW240–100
Counter Drive
Gear Installation
Adapter
DW240–130
Differential Preload
Adapter
DW260–041
Planetary Ring
Gear Nut
Removal/Installation
Socket (52mm)
DW260–013
Transaxle Support
Fixture
DW260–031–01
Tranaxle Housing
Oil Seal Installer
DW240–140
Transaxle Housing
Side Bearing
Outer Race
Adapter
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 7
DW240–150
Transaxle Case
Side Bearing
Outer Race
Adapter
DW240–160
Transaxle Case
Outer Tapered
Roller Bearing
Race Adapter
DAEWOO V–121 BL4
DW240–170
Adapter Handle
5A2 – 8IAISIN AUTOMATIC TRANSAXLE
SCHEMATIC DIAGRAMS
TRANSMISSION CONTROL MODULE (1 OF 4)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 9
TRANSMISSION CONTROL MODULE (2 OF 4)
DAEWOO V–121 BL4
5A2 – 10IAISIN AUTOMATIC TRANSAXLE
TRANSMISSION CONTROL MODULE (3 OF 4)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 11
TRANSMISSION CONTROL MODULE (4 OF 4)
DAEWOO V–121 BL4
5A2 – 12IAISIN AUTOMATIC TRANSAXLE
SHIFT MODE DIAGRAM
Economic Mode (1.6 DOHC)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 13
Power Mode (1.6 DOHC)
DAEWOO V–121 BL4
5A2 – 14IAISIN AUTOMATIC TRANSAXLE
Up–Slope 1 Mode (1.6 DOHC)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 15
Up–Slope 2 Mode (1.6 DOHC)
DAEWOO V–121 BL4
5A2 – 16IAISIN AUTOMATIC TRANSAXLE
Down–Slope Mode (1.6 DOHC)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 17
COMPONENT LOCATOR
SHIFT SELECT CONTROL
1.
2.
3.
4.
Select Control Lever Assembly
Bolt
Nut
Select Control Cable
DAEWOO V–121 BL4
5.
6.
7.
8.
Clamp
E–ring
Cable Fastener
Bolt
5A2 – 18IAISIN AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE COMPONENTS
1.
2.
3.
4.
5.
6.
7.
Breather Hose
Clip
Breather Plug
O–ring
Input Speed Sensor
Oil Cooler Outlet Union
O–ring
8.
9.
10.
11.
12.
13.
Oil Cooler Inlet Union
O–ring
Screw Plug
O–ring
Washer
Drain Plug
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 19
DAEWOO V–121 BL4
5A2 – 20IAISIN AUTOMATIC TRANSAXLE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
Transaxle Housing
Oil Seal
Oil Reservoir Plate
Transaxle Oil Apply Pipe
Differential Gear Oil Apply Pipe
Transaxle Oil Apply Pipe Clamp
Spring
Check Valve Pipe Clamp
Apply Gasket
Brake Drun Gasket
Transaxle Wire
O–ring
Valve Body
Parking Lock Pawl
Parking Lock Pawl Shaft
Torsion Spring
Manual Valve lever Shaft
Manual Valve Lever
Parking Lock Rod
Parking Lock Pawl Bracket
Manual Detent Spring
Pin
Spacer
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
Oil Seal
Transmission Range (TR) Switch
Lock Washer
Control Lever
Washer
Gasket
Oil Strainer
Oil Pan
Gasket
Magnet
Direct Clutch Accumulator Piston
O–ring
Spring
O–ring
Forward Clutch Accumulator Piston
O–ring
Spring
O–ring
Overdrive Brake Accumulator Piston
O–ring
O–ring
Spring
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 21
DAEWOO V–121 BL4
5A2 – 22IAISIN AUTOMATIC TRANSAXLE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
Planetary Ring Gear
O–ring
1st and Reverse Brake Piston
O–ring
1st and Reverse Brake Piston Return Spring
Plate
Disc
Flange
Snap Ring
Planetary Gear
Thrust Washer
No. 2 One–Way Clutch
Anti–Rattle Clip
Flange
Disc
Plate
2nd Brake Piston Return Spring
O–ring
2nd Brake Piston
O–ring
2nd Brake Clutch Cylinder
Snap Ring
Thrust Bearing Race
Front Planetary Sun Gear
Thrust Bearing Race
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
One–Way Clutch Assembly
Thrust Washer
Rear Planetary Sun Gear
Snap Ring
Flange
Disc
Plate
Thrust Bearing Race
Thrust Needle Roller Bearing
Forward Clutch Hub
Thrust Bearing Race
Thrust Needle Roller Bearing
Thrust Bearing Race
Forward and Reverse Clutch Assembly
Thrust Needle Roller Bearing
Snap Ring
O/D Brake Return Spring
O/D Brake Piston
O–ring
Seal Ring
Transaxle Rear Cover
Apply Gasket
O–ring
Screw Plug
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 23
1.
2.
3.
4.
5.
6.
7.
Side Bearing Outer Race
Differential Case
Shim
Outer Tapered Roller Bearing Race
Counter Driven Gear
Oil Seal
Oil Pump
DAEWOO V–121 BL4
8.
9.
10.
11.
12.
13.
14.
Thrust Needle Roller Bearing
Direct Clutch Assembly
Thrust Bearing Race
Direct Clutch Hub
Counter Driven Gear
Transaxle Case Plate
Apply Gasket
5A2 – 24IAISIN AUTOMATIC TRANSAXLE
BEARING AND RACES INSTALLATION POSITION AND
DIRECTION
Mark
Front Race Diameter : mm(in)
Thrust Bearing Diameter :
mm(in)
Rear Race Diameter : mm(in)
Inside
Outside
Inside
Outside
Inside
Outside
A
–
–
32.5 (1.280)
48.5 (1.909)
–
–
B
–
–
17.8 (0.701)
30.2 (1.189)
20.5 (0.807)
32.6 (1.283)
C
19.3 (0.760)
29.0 (1.142)
–
–
–
–
D
–
–
42.5 (1.673)
57.5 (2.264)
–
–
E
34.95 (1.3670)
45.50 (1.7913)
33.3 (1.311)
46.5 (1.831)
–
–
F
19.3 (0.760)
30.6 (1.205)
18.1 (0.713)
29.6 (1.165)
18.1 (0.713)
28.2 (1.110)
G
–
–
43.2 (1.701)
62.0 (2.441)
–
–
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 25
DIAGNOSIS
ELECTRIC CONNECTOR VIEW
DAEWOO V–121 BL4
5A2 – 26IAISIN AUTOMATIC TRANSAXLE
X–1 : TCM Vehicle Side Wiring Connector
A1
Ground
B1
R
A2
Pressure Control Solenoid Ground
B3
Clock
A4
Pressure Control Solenoid
B4
Hold
A5
Lock–Up Solenoid
B6
Input Speed Sensor
A6
Ignition (+)
B7
D
A7
CAN (Low)
B8
N
A11
Transmission Fluid Temperature Sensor
B16
Input Speed Sensor Ground
A12
Transmission Fluid Temperature Sensor
Ground
B18
L
A14
Timing Solenoid
B19
2
A15
Shift Solenoid No.2
B20
P
A16
Shift Solenoid No.1
B22
Stop Lamp Switch
A17
CAN (High)
B23
DLC
A23
Ground
B25
Output Speed Sensor
A24
B+
–
X–2 : Transmission Range (TR) Switch Connector
1
P
2
R
3
Ground
4
2
5
N
6
ST(–)
7
D
8
9
–
X–3 : Transaxle Wiring Connector
1
Transmission Fluid Temperature Sensor
2
Timing Solenoid
3
Pressure Control Solenoid
4
Lock–Up Solenoid
5
Shift Solenoid No.1
6
Transmission Fluid Temperature Sensor
Ground
1
8
Pressure Control Solenoid Ground
ST(+)
10
Shift Solenoid No.2
X–4 : Output Speed Sensor Connector
1
Ignition
X–5 : Input Speed Sensor
2
Ground
1
Input Speed Sensor Ground
3
Output Speed Sensor
2
Input Speed Sensor
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 27
Measure the resistance between one terminal
an another terminal in the same connector.(Except between power supply or between earth).
WIRING HARNESS AND
CONNECTOR INSPECTION
1.
Reproducing test
Perform symptom simulation test on the basis of
user’s condition. Refer to the below factors.
Occuring–road condition, speed, accelerate,
reduce speed, straight, curve, air temperature,
weather, etc.
Inspect the connection condition of between connectors.
Inspect the failure between connectors by visual
check and contact pressure check.
S
2.
S
S
S
3.
Normal : 1Ω or less (No open circuit)
Abnormal : R Ω (Open circuit)
It is usual case of the short circuit that wiring harness is
crowded body and clamping failure.
5.
ROAD TEST
Road test is to diagnosis failure symptom accurately and
check the failure symptom after procedure.
Confirm whether below condition before road test. Oil temperature is hot condition (50°C (122°F) ~ 80°C (176°F)).
1.
S
S
Inspect the short circuit of the wiring harness.
Disconnect the connectors of the wiring harness
at both ends, measure resistance between the
applicable terminals of the connector and body
earth.
Normal : 1M Ω or higher (No short circuit)
Abnormal : Low resistance (Short circuit)
DAEWOO V–121 BL4
D range test
S
It is rare case wiring harness is broken at the middle of it,
and most cases occur at the connector.
S
S
Temporary connection failure of the connector.
It is thought that temporally the connection failure of the connector is cause when you can not
decide cause of DTC detection.
Therfore make sure to inspect and clean the
connector and delete the memorized DTC.
Notice : Measure the resistance while slightly shaking
wire harness vertically and horizontally.
4.
Normal : 1M Ω or higher (No short circuit)
Abnormal : Low resistance (Short circuit)
Notice : Measure the wiring harness while slightly shaking
vertically and horzontally.
Connector disconnected
Terminals rusted
Terminals deformation or loose fit
Inspect the Continuity of the wiring harness.
Disconnect both ends connector of wiring harness, measure resistance between one connector terminal and other.
S
S
S
S
2.
Check for up–shift, down–shift, kick–down and
lock–up operation at the shift point shown in the
shift schedule.
Check for engine brake operation.
Check for Check abnormal shock, noise and
harshness.
”P” range test
Park vehicle on a gradient (more than 5°), shift
into the ”P” range and release parking brake.
Then, check to see no moving vehicle by operation of parking lock pawl.
5A2 – 28IAISIN AUTOMATIC TRANSAXLE
1.
FUNCTION CHECK
Confirm whether below condition before function check.
Oil temperature is hot condition (50°C (122°F) ~
80°C (176°F)).
Switch of A/C and light etc are off.
S
S
2.
3.
Chock 4 Wheels and apply parking brake fully, lock
vehicle perfectly.
Fully pressed on foot brake pedal with left foot.
Shift into ”D” and ”R” range, fully press on accelerator pedal with right foot.
Quickly read stall speed at this time.
Standards
Stall Test
Stall test’ purpose is to inspect overall performance of A/T
and engine by measuring the stall speed in ”D” and ”R”
range.
Result of Stall Test
Notice : Do not continuously run longer than 5 sec because of extreme increasing oil temp.
Make sure to keep interval for more than 1 min between
stall tests.
Cause of Failure
Lower than standards
both ”D” and ”R”
Less engine power
Torque converter one way clutch failure
Higher than standards
only ”D”
Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Forward clutch (C1) failure (Slipping)
No.2 One–way clutch (F2) failure
Higher than standards
only ”R”
Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Reverse clutch (C3) failure (Slipping)
1st & reverse brake (B3) failure (Slipping)
Higher than standards
both ”D” and ”R”
Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Oil pump failure
Oil strainer failure (clogging)
Oil leak for each range circuit
Time Lag Test
Time lag is time till slightly shock can be felt when shift lever is shifted ”N” ³ ”D” and ”N” ³ ”R” while engine idling.
Time lag test can inspect hydraulic condition and clutch/
brake condition.
1.
2.
2390 ± 150 rpm
Chock 4 Wheels and apply parking brake fully, lock
vehicle perfectly.
Measure time lag by using stop watch from moment
when shift lever is shifted in ”N” ³ ”D” and ”N” ³
”R” until moment slightly shock can be felt.
”N ³ D”
less than 0.7 sec
”N” ³ ”R”
less than 1.2 sec
Notice : Make sure to take 3 measurement and take the
average value.
Make sure to keep interval for more than 1 min between
time lag tests. (That purpose is to remove clutch/brake
pressure was left unfinished.)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 29
Result of Time Lag Test
Cause of Failure
Longer than standards ”N” ³ ”D”
Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Forward Clutch (C1) failure (Slipping)
Timing solenoid failure
Oil leak for ”D” range circuit
Longer than standards ”N” ³ ”R”
Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Reverse clutch (C3) failure (slipping)
1st & reverse brake (B3) failure (slipping)
Oil leak for ”R” range circuit
2.
Hydraulic Test
Hydraulic test can inspect working condition inside A/T by
measuring line pressure in ”D” / ”R” range and ”idle” / ”stall”
condition.
3.
Install oil pressure gage adapter DW240–010–02 to
test hole for line pressure.
Fully pressed on foot brake pedal with left foot, shift
into ”D” and ”R” range and measure line pressure
”idle” / ”stall” condition.
Line pressure
Mpa (kgf/cm2)
D
R
Engine idle
0.37 (3.9)
–0.14 (4.2)
0.59 (6.0)
–0.68 (6.9)
Engine stall
1.10 (11.3)
–1.23 (12.5)
1.58 (16.2)
–1.83 (18.6)
Notice : Do not continuously run longer than 5 sec because of extreme increasing oil temp.
Make sure to keep interval for more than 1 min between
stall tests.
1.
Chock 4 Wheels and apply parking brake fully, lock
vehicle perfectly.
Make sure to check no oil leak after installing oil pressure
gage adapter.
Result of Hydraulic Test
Cause of Failure
Higher than standards
both ”D and ”R”
Pressure control solenoid (PCS) failure
Primary regulator valve failure
Lower than standards
both ”D and ”R”
Pressure control solenoid (PCS) failure
Primary regulator valve failure
Oil pump failure
Oil strainer failure (clogging)
Oil leak for each range circuit
Lower than standards
only ”D
”D” hydraulic circuit failure
Forward clutch (C1) failure
Lower than standards
only ”R”
”R” hydraulic circuit failure
Reverse clutch (C3) failure
1st and reverse brake (B3) failure
DAEWOO V–121 BL4
5A2 – 30IAISIN AUTOMATIC TRANSAXLE
S
Manual Shifting Test
Manual shifting test is to determine whether failure symptom is within electrical failure or mechanical failure.
1.
Disconnect wire harness of shift solenoid, check
the range and gear positions correspond with below
table when driving by manual shifting.
Range
Gear
D
3rd gear
R
Reverse
Apply compressed air of 2kg/cm2 from cooler pipe
inlet side, inspect whether there is not cooler pipe
choke by confirming air flow smooth.
Action : Remove foreign particles and clean inside of pipe
line.
Notice : Make sure to disconnect only wire harness of shift
solenoid.
Normal
UNIT INSPECTION
Drive Plate Deflection
S
Inspect drive plate deflection if within standard
value.
Standard Value
within 0.2mm (0.008 in)
Vehicle Speed Sensor
1.
2.
Remove the connector of vehicle speed sensor,
connect 12V power supply and voltmeter to the terminal.(Do not mistake polarity)
Check voltage change from approx. 0V to 12V with
vehicle speed sensor driven gear rotated.
Notice : The voltage change should be 4 times for 1 revolution of the vehicle speed sensor driven gear.
Action :
Standard value is not within the specified value, replace
drive plate.
When ”abnormal wear” or ”stick” on torque converter
sleeve or oil pump is found, replace torque converter and
A/T.
Notice :
S
S
When assembling torque converter and drive plate.
Be sure to use correct bolt with correct length. The
bolt pushes up torque converter front cover, and it
damages lock–up clutch lining. As a result, it cause
major failure ”No move”.
Do not tighten the bolts by using impact wrench.
Cooler Pipe Bending and Choke
S
Inspect it whether there is abnormal pipe bending in
the cooler pipe, pipe deformation and small cross–
section area of pipe line.
Action : Replace failure parts.
Action : If the result of inspection is bad, replace the vehicle speed sensor.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 31
Input Speed Sensor
S
Inspect resistance of each input speed senor between terminals.
Action : If the result of inspection is bad, replace the TR
switch.
Transmission Fluid Temperature Sensor
S
Inspect the resistance between the terminals of
TFT sensor at 10°C (50°F) and 110°C (230°F).
Standard Value
10°C (50°F)
110°C (230°F)
5.80~7.09 kΩ
0.23~0.263 kΩ
Action : If the result of inspection is bad, replace the TFT
sensor.
Notice :
S
S
Make sure to inspect resistance again at 20°C
(68°F) when resistance differ from standards except 20°C (68°F).
It might become infinity ohm when inspect resistance at higher temperature.
Action : If the result of inspection is bad, replace ISS.
Transmission Range (TR) Switch
S
Remove TR switch connector and inspect continuty
each range according to the conection chart.
DAEWOO V–121 BL4
5A2 – 32IAISIN AUTOMATIC TRANSAXLE
Shift Solenoid (NO.1,2), Timing Solenoid,
Lock–Up Solenoid
1.
Inspect the resistance of each shift solenoid between the terminal and the body earth.
S
Action : If the result of inspection is bad, replace each solenoid.
Notice :
S
S
2.
Make sure to inspect resistance again at 20°C
(68°F) when resistance differ from standards except 20°C (68°F).
It might become infinity ohm when inspecting resistance at higher temperature.
Inspect the operation of each shift solenoid.
S
Solenoid (No.1,2), Lock–up solenoid (Normal
open type)
No battery connection
Leak air
Battery connection
No leak air
Timing solenoid (Normal close type)
No battery connection
No leak air
Battery connection
Leak air
Action : If the result of inspection is bad, replace the each
solenoid.
Notice : Do not damage the strainer on the tip of solenoid
while inspecting operation.
Pressure Control Solenoid
S
Inspect the resistance of each pressure control solenoid between terminals.
Action : Repalce the valve body assembly. (No replacement of solenoid by itself)
Notice :
S
S
Make sure to inspect resistance again at 20°C
(68°F) when resistance differ from standards except 20°C (68°F).
It might become infinity ohm when inspecting resistance at higher temperature.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 33
DAEWOO V–121 BL4
5A2 – 34IAISIN AUTOMATIC TRANSAXLE
ON–VEHICLE REPAIR (MATRIX CHART)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 35
DAEWOO V–121 BL4
5A2 – 36IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE DIAGNOSIS
DIAGNOSTIC TROUBLE CODE CHART
DTC
DESCRIPTION
TYPE
Illuminate
MIL
Blink
Hold
Lamp
P0562
System Voltage Low
B
Yes
No
P0563
System Voltage High
B
Yes
No
P0601
Internal Control Module Memory Checksum Error
A
Yes
No
P0604
Internal Transmission Control Module (TCM) Random Access
Memory (RAM) Error
B
Yes
No
P0705
Transmission Range (TR) Switch Circuit Malfunction
B
Yes
No
P0712
Transmission Fluid Temperature Sensor Circuit Low Input
A
Yes
No
P0713
Transmission Fluid Temperature Sensor Circuit High Input
A
Yes
No
P0717
Input Shaft Speed (ISS) Sensor Circuit No Signal
A
Yes
No
P0722
Output Shaft Speed (OSS) sensor Circuit No Signal
A
Yes
No
P0727
Engine Speed Input Circuit No Signal
A
Yes
No
P0741
Torque Converter Clutch (TCC) Circuit Stuck Off
B
Yes
No
P0742
Torque Converter Clutch (TCC) Circuit Stuck On
B
Yes
No
P0743
Torque Converter Clutch (TCC) Electrical
B
Yes
No
P0748
Pressure Control Solenoid (PCS) Electrical
A
Yes
No
P0751
Shift Solenoid 1 (SS1) Stuck Off
B
Yes
No
P0753
Shift Solenoid 1 (SS1) Electrical
A
Yes
No
P0756
Shift Solenoid 2 (SS2) Stuck Off
B
Yes
No
P0758
Shift Solenoid 2 (SS2) Electrical
A
Yes
No
P0785
Timing Solenoid (ST) Electrical
A
Yes
No
P1781
Engine Torque Signal Error
A
Yes
No
P1791
Throttle Position Signal Error
A
Yes
No
P1792
Engine Coolant Temperature (ECT) Signal Error
D
No
No
U2105
CAN Error
A
Yes
No
* Description of Type
S
Type A : TCM will request the illumination of MIL and store DTC when TCM detects a failure on the first ignition
cycle.
S
Type B : TCM will request the illumination of MIL and store DTC when TCM detects failures on two consecutive
ignition cycle.
S
Type D : TCM will not request the illumination of MIL or hold lamp, but will store DTC when TCM detects a failure
on the first ignition cycle.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 37
DIAGNOSTIC TROUBLE CODE (DTC) P0562
SYSTEM VOLTAGE LOW
Conditions for Setting the DTC
S
System voltage is too low.
S
TCM detects that voltage is less than 9 volts for 0.5
seconds continuously.
S
Engine revolution is 600 rpm or greater.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycle.
Conditions for Clearing the DTC
DAEWOO V–121 BL4
S
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
S
S
TCM wiring harness and connectors
Battery
TCM
5A2 – 38IAISIN AUTOMATIC TRANSAXLE
DTC P0562 System Voltage Low
Step
Action
Value(s)
Yes
No
1
1.
2.
3.
4.
5.
6.
7.
Turn the ignition OFF.
Install the Scan tool.
Turn the ignition ON, with the engine OFF.
Run the engine to 600 rpm or greater.
Record then clear DTC(s).
Select system voltage on the scan tool.
Drive the vehicle and observe the scan tool for
either of the flowing conditions:
Is the voltage within the values shown?
9–16v
Go to Step 4
Go to Step 2
2
1. Disconnect the battery cable.
2. Measure the battery voltage.
Is the voltage within the values shown?
9–16v
Go to Step 4
Go to Step 3
3
1. Replace the battery.
Is the replacement completed?
–
System OK
–
4
1. Turn the headlamp ON.
2. Turn the air conditioner ON.
3. Run the engine to 600 rpm or greater.
4. Observe the scan tool for system voltage.
Is the voltage within the values shown?
9–16v
Go to Step 6
Go to Step 5
5
1. Turn the ignition LOCK.
2. Repair the alternator circuit if necessary.
Is the action completed?
–
System OK
–
6
Inspect the EF1,F2 fuse for an open.
Was a problem found?
–
Go to Step 7
Go to Step 8
7
Inspect the EF1,F2 fuse for short. Replace the fuse
if necessary.
Is the replacement complete?
–
System OK
–
8
1. Turn the ignition ON.
2. Measure the voltage of EF1, F2.
Is the voltage within the values shown?
9–16v
Go to Step 10
Go to Step 9
9
Repair the fuse voltage supply lines for open.
Is the action completed?
–
System OK
–
10
1. Turn the ignition LOCK.
2. Disconnect the TCM wiring connector.
3. Measure the resistance between EF1 fuse and
terminal A24 of the TCM wiring connector.
Is the resistance within the values shown?
0Ω
Go to Step 12
Go to Step 11
11
Repair the circuit (between EF1 and terminal A24)
for short to ground and open.
Is the repair completed?
–
System OK
–
12
1. Disconnect the C105 connector and TCM connector.
2. Turn the ignition ON.
3. Measure the voltage of the terminal A24.
Is the voltage within the values shown?
9–16v
Go to Step 13
Go to Step 14
13
Repair the circuit from EF1 to terminal A24 of the
TCM for short to battery.
Is the repair completed?
–
System OK
–
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 39
Step
Action
Value(s)
Yes
No
0Ω
Go to Step 17
Go to Step 15
–
System OK
–
9–16v
Go to Step 17
Go to Step 18
14
1. Turn the ignition LOCK.
2. Disconnect the C201 connector.
3. Measure the resistance between F2 fuse and
terminal A6 of the TCM wiring connector.
Is the resistance within the values shown?
15
Repair the circuit (between F2 and terminal A6) for
short to ground and open.
Is the repair completed?
16
1. Turn the ignition ON.
2. Measure the voltage of the terminal A6.
Is the voltage within the values shown?
17
Repair the circuit (between F2 and terminal A6) for
short to battery.
Is the repair completed?
–
System OK
–
18
1. Inspect the transaxle wiring for poor electrical
connectors at the transaxle connector.
2. Look for possible bent, backed out, deformed,
or damaged terminals.
3. Check for week terminal tension.
Was a condition found?
–
Verify repair
and
Go to Step 20
–
19
Replace the TCM.
Is the replacement complete?
–
Go to Step 20
–
20
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
Exit DTC chart
DAEWOO V–121 BL4
5A2 – 40IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0563
SYSTEM VOLTAGE HIGH
Conditions for Setting the DTC
S
System voltage is too high.
S
TCM detects that voltage is greater than 18 volts
for 0.5 seconds continuously.
S
Engine revolution is 600 rpm or greater.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycle.
Conditions for Clearing the DTC
S
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
S
S
TCM wiring harness and connectors
Battery
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 41
DTC P0563 System Voltage High
Step
Action
Value(s)
Yes
No
1
1.
2.
3.
4.
5.
6.
7.
Turn the ignition OFF.
Install the Scan tool.
Turn the ignition ON, with the engine OFF.
Run the engine to 600 rpm or greater.
Record then clear DTC(s).
Select system voltage on the scan tool.
Drive the vehicle and observe the scan tool for
either of the flowing conditions:
Is the voltage within the values shown?
9–16v
Go to Step 4
Go to Step 2
2
1. Disconnect the battery cable.
2. Measure the battery voltage.
Is the voltage within the values shown?
9–16v
Go to Step 4
Go to Step 3
3
1. Replace the battery.
Is the replacement completed?
–
System OK
–
4
1. Turn the headlamp ON.
2. Turn the air conditioner ON.
3. Run the engine to 600 rpm or greater.
4. Observe the scan tool for system voltage.
Is the voltage within the values shown?
9–16v
Go to Step 6
Go to Step 5
5
1. Turn the ignition LOCK.
2. Repair the alternator circuit if necessary.
Is the action completed?
–
System OK
–
6
Inspect the EF1,F2 fuse for an open.
Was a problem found?
–
Go to Step 7
Go to Step 8
7
Inspect the EF1,F2 fuse for short. Replace the fuse
if necessary.
Is the replacement complete?
–
System OK
–
8
1. Turn the ignition ON.
2. Measure the voltage of EF1,F2.
Is the voltage within the values shown?
9–16v
Go to Step 10
Go to Step 9
9
Repair the fuse voltage supply lines for open.
Is the action completed?
–
System OK
–
10
1. Turn the ignition LOCK.
2. Disconnect the TCM wiring connector.
3. Measure the resistance between EF1 fuse and
terminal A24 of the TCM wiring connector.
Is the resistance within the values shown?
0Ω
Go to Step 12
Go to Step 11
11
Repair the circuit (between EF1 and terminal A24)
for short to ground and open.
Is the repair completed?
–
System OK
–
12
1. Disconnect the C105 connector and TCM connector.
2. Turn the ignition ON.
3. Measure the voltage of the terminal A24.
Is the voltage within the values shown?
9–16v
Go to Step 13
Go to Step 14
13
Repair the circuit from EF1 to terminal A24 of the
TCM for short to battery.
Is the repair completed?
–
System OK
–
DAEWOO V–121 BL4
5A2 – 42IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
0Ω
Go to Step 17
Go to Step 15
–
System OK
–
9–16v
Go to Step 17
Go to Step 18
14
1. Turn the ignition LOCK.
2. Disconnect the C201 connector.
3. Measure the resistance between F2 fuse and
terminal A6 of the TCM wiring connector.
Is the resistance within the values shown?
15
Repair the circuit (between F2 and terminal A6) for
short to ground and open.
Is the repair completed?
16
1. Turn the ignition ON.
2. Measure the voltage of the terminal A6.
Is the voltage within the values shown?
17
Repair the circuit (between F2 and terminal A6) for
short to battery.
Is the repair completed?
–
System OK
–
18
1. Inspect the transaxle wiring for poor electrical
connectors at the transaxle connector.
2. Look for possible bent, backed out, deformed,
or damaged terminals.
3. Check for week terminal tension.
Was a condition found?
–
Verify repair
and
Go to Step 20
–
19
Replace the TCM.
Is the replacement completed?
–
Go to Step 20
–
20
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
Exit DTC chart
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 43
DIAGNOSTIC TROUBLE CODE (DTC) P0601
INTERNAL CONTROL MODULE MEMORY CHECKSUM
ERROR
Conditions for Setting the DTC
S
The Transmission Control Module (TCM) detects a
difference between the calculated checksum data
and rear checksum data.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first consecutive ignition cycle.
DAEWOO V–121 BL4
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Harness or connector between TCM and ECM
S
ECM
S
TCM
5A2 – 44IAISIN AUTOMATIC TRANSAXLE
DTC P0601 Internal Control Module Memory Checksum Error
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Inspect Transmission Control
Module (TCM)
wiring harness
and connector
for signs of an
intermittent
condition. Repair as necessary.
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0601 displayed?
–
Replace the
Transmission
Control Module
(TCM)
Inspect Transmission Control
Module (TCM)
wiring harness
and connector
for signs of an
intermittent
condition. Repair as necessary.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 45
DIAGNOSTIC TROUBLE CODE (DTC) P0604
INTERNAL TRANSMISSION CONTROL MODULE (TCM)
RANDOM ACCESS MEMORY (RAM) ERROR
Conditions for Setting the DTC
S
The Transmission Control Module (TCM) cannot
carry out the four RAM initialization routines.
S
TCM detects that the RAM cannot be written and
read correctly.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycle.
Conditions for Clearing the DTC
DAEWOO V–121 BL4
S
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
S
S
Harness or connector between TCM and ECM
ECM
TCM
5A2 – 46IAISIN AUTOMATIC TRANSAXLE
DTC P0604 Internal Transmission Control Module (TCM) Random
Access Memory (RAM) Error
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Inspect Transmission Control
Module (TCM)
wiring harness
and connector
for signs of an
intermittent
condition. Repair as necessary.
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0604 displayed?
–
Replace the
Transmission
Control module
(TCM)
Inspect Transmission Control
Module (TCM)
wiring harness
and connector
for signs of an
intermittent
condition. Repair as necessary.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 47
DIAGNOSTIC TROUBLE CODE (DTC) P0705
TRANSMISSION RANGE (TR) SWITCH CIRCUIT
MALFUNCTION
Conditions for Setting the DTC
S
TCM detects more than two equal signals from the
Park/Neutral Position switch circuit for 10 seconds
continuously.
S
TCM detects the no signal of TR switch circuit for 2
seconds continuously.
S
Vehicle speed is 30 km/h (19 mph) or greater.
S
Engine revolution is 1500 rpm or greater.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycle.
S
TCM judges with the priority. (D>2>1>R>N>P)
S
No timing solenoid control for N–D
S
No self–learning control
S
No lockup
DAEWOO V–121 BL4
S
No prevent reverse gear control
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects single ”D range” signal of the TR
switch.
Cause of Failure
S
Wiring harness or connector between TR switch
and TCM
S
TR switch
S
TCM
5A2 – 48IAISIN AUTOMATIC TRANSAXLE
DTC P0705 Transmission Range (TR) Switch Circuit Malfunction
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0705 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the continuity between the vehicle harness and the Transmission Range (TR) Switch.
3. Disconnect the TCM connector (X–1) of the
vehicle harness and inspect the continuity for
the each terminal according to the position of
the select lever.
–
Go to Step 4
Go to Step 5
P : B20
R : B1
N : B8
D : B7
2 : B19
1 : B18
Does the inspection OK?
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
TCM connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and TR switch.
2. Disconnect the connector (X–2) of the vehicle
harness and inspect the continuity between the
terminals. Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition of TR switch OK?
–
Go to Step 7
Replace the TR
switch.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 49
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section).
Replace the
TCM.
7
1. Estimate the failure of the vehicle harness.
2. Inspect continuity and short circuit for the vehicle harness and inspect the connection condition between connectors (C–2). Refer to ”Wiring Harness and Connector Inspection” in this
section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors.
DAEWOO V–121 BL4
5A2 – 50IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0712
TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR
CIRCUIT LOW INPUT
Conditions for Setting the DTC
S
TCM detects that A/D value of Transmission Fluid
Temperature sensor (TFT) signal is less than 10 for
5 minutes continuously after 1 time of this detection. (A/D VALUE 10: 24mV)
Action Taken When the DTC Sets
S
S
S
S
S
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
TCM judges the temperature of the transmission
fluid is 200°C (392°F).
No lockup control
No 4th gear
No self–learning control
No timing solenoid control N–D
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects the temperature of the transmission
fluid is between 0°C (32°) and 150°C (302°F) for
10 seconds continuously.
Cause of Failure
S
Wiring harness or connector between Transmission
Fluid Temperature (TFT) sensor and TCM
S
TFT sensor
S
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 51
DTC P0712 Transmission Fluid Temperature (TFT) Sensor Circuit
Low Input
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0712 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Transmission Fluid Temperature
(TFT) sensor. Refer to ”Unit Inspection” in this
section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A11
and A12.
Is the measurement within the specified value?
10°C (50°F):
5.80–7.09 kW
110°C (230°F):
0.231–0.263
kW
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and TFT sensor.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between TFT sensor connector terminal 1 and 6.
Is the measurement within the specified value?
10°C (50°F):
5.80–7.09 kW
110°C (230°F):
0.231–0.263
kW
Go to Step 7
Go to Step 8
DAEWOO V–121 BL4
5A2 – 52IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section).
Replace the
TCM.
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector Inspection” in
this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of TFT sensor.
2. Inspect fluid temperature. Refer to ”Unit Inspection” in this section.
Is the problem found?
–
Replace TFT
sensor
Go to Step 9
9
1. Estimate the failure of T/M wire.
Inspect continuity and short circuit for the T/M wire
and inspect the connection condition between connectors (C–3). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 53
DIAGNOSTIC TROUBLE CODE (DTC) P0713
TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR
CIRCUIT HIGH INPUT
Conditions for Setting the DTC
S
TCM detects that A/D value of Transmission Fluid
Temperature sensor (TFT) signal is less than 15
and the minimum A/D value is more than 943,
when it is past 15 minutes after ignition ON.(A/D
value 943 : 4.7 v)
S
After 1 time of above detection.
S
Gear selector position is except P and N.
S
Engine revolution is 400 rpm or greater.
S
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
TCM judges the temperature of the transmission
fluid is 200°C (392°F).
S
No lockup control
S
No 4th gear
S
No self–learning control
S
DAEWOO V–121 BL4
No timing solenoid control N–D
Conditions for Clearing the DTC
S
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
TCM detects the temperature of the transmission
fluid is between 0°C (32°F) and 150°C (302°F) for
10 seconds continuously.
Cause of Failure
S
S
S
Wiring harness or connector between Transmission
Fluid Temperature (TFT) sensor and TCM
TFT sensor
TCM
5A2 – 54IAISIN AUTOMATIC TRANSAXLE
DTC P0713 Transmission Fluid Temperature (TFT) Sensor Circuit
High Input
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0713 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Transmission Fluid Temperature
(TFT) sensor. Refer to ”Unit Inspection” in this
section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A11
and A12.
Is the measurement within the specified value?
10°C (50°F):
5.80–7.09 kW
110°C (230°F):
0.231–0.263
kW
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and TFT sensor.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between TFT sensor connector terminal 1 and 6.
Is the measurement within the specified value?
10°C (50°F):
5.80–7.09 kW
110°C (230°F):
0.231–0.263
kW
Go to Step 7
Go to Step 8
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 55
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section).
Replace the
TCM.
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector Inspection” in
this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of TFT sensor.
2. Inspect fluid temperature. Refer to ”Unit Inspection” in this section.
Is the problem found?
–
Replace TFT
sensor
Go to Step 9
9
1. Estimate the failure of T/M wire.
Inspect continuity and short circuit for the T/M wire
and inspect the connection condition between connectors (C–3). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
5A2 – 56IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0717
INPUT SHAFT SPEED (ISS) SENSOR CIRCUIT NO
SIGNAL
Conditions for Setting the DTC
S
This DTC detects no signal of Input Shaft Speed
(ISS) sensor circuit for a long period of time. ( Revolution : 0 rpm 10000 rpm).
S
TCM detects no pulse of ISS sensor while TCM
detects 4 pulses of Output Speed Sensor. This
detection 1000 times continuously.
S
D,2,L range selected
S
Engine revolution is 400 rpm or greater.
S
DTCs P0751, P0753, P0756, P0758, and P0705
are not set.
S
Output revolution is 775 rpm or greater.
S
25 seconds later after Neutral to Drive shift.
S
10 seconds later after changing the gear.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
No lockup control
S
No engine torque reduction control
S
S
S
S
No engagement pressure control
No 4th gear
No self–learning control
No timing solenoid control N–D
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects 250 pulses of ISS while failure detection is not achieved.
Cause of Failure
S
Wiring harness or connector between Input Shaft
Speed (ISS) sensor and TCM
S
ISS sensor
S
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 57
DTC P0717 Input Shaft Speed (ISS) Sensor Circuit No Signal
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0717 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Input Shaft Speed (ISS) sensor. Refer to”Unit Inspection” in this section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal B6
and B16.
Is the measurement within the specified value?
20°C (68°F):
560–680 W
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of T/M wire or between the
connectors of ISS sensor.
2. Disconnect the ISS sensor connector (X–5)
and inspect the resistance between terminals 1
and 2.
Is the measurement within the specified value?
20°C (68°F):
560–680W
Go to Step 7
Replace the
ISS sensor
DAEWOO V–121 BL4
5A2 – 58IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
Replace the
TCM.
7
1. Estimate the failure of T/M wire.
2. Inspect continuity and short circuit for the T/M
wire and inspect the connection condition between connectors (C–5). Refer to ”Wiring Harness and Connector” in this section
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 59
DIAGNOSTIC TROUBLE CODE (DTC) P0722
OUPUT SHAFT SPEED (OSS) SENSOR CIRCUIT NO
SIGNAL
Conditions for Setting the DTC
S
This DTC detects no signal of Output Shaft Speed
(OSS) sensor circuit for a long period of time. (
Revolution : 0 rpm 10000 rpm).
S
TCM detects no pulse of Output Shaft Speed
(OSS) sensor while TCM detects 178 pulses of Input Shaft Speed sensor. This detection 500 times
continuously.
S
D,2,L range selected
S
Input speed is 5 km/h (3 mph) or greater.
S
DTCs P0751, P0753, P0756, P0758, P0717 and
P0705 are not set.
S
25 seconds later after Neutral to Drive shift.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
No lockup control
S
No engine torque reduction control
S
No engagement pressure control
DAEWOO V–121 BL4
S
S
S
No 4th gear
No self–learning control
No prevent reverse gear control
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects 250 pulses of Output Shaft Speed
(OSS) sensor while failure detection is not
achieved.
Cause of Failure
S
Wiring harness or connector between Output Shaft
Speed (OSS) sensor and TCM
S
OSS sensor
S
TCM
5A2 – 60IAISIN AUTOMATIC TRANSAXLE
DTC P0722 Output Shaft Speed (OSS) sensor Circuit No Signal
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0722 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the voltage between vehicle harness
and the Output Shaft Speed (OSS) sensor.
3. Disconnect the connector (X–1) of the vehicle
harness.
4. Connect the voltmeter to monitor the voltage
between terminal B25 and ground.
5. Turn ignition ON and lift up the vehicle.
6. Check the voltage change from approximately
0 v to 12 v when the wheel is turned slowly.
Does the measurement change within the specified
value?
0–12 v
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of T/M wire or between the
connectors of OSS sensor.
2. Inspect the OSS sensor. Refer to ”Unit Inspection” in this section
Is the condition of OSS sensor OK?
–
Go to Step 7
Replace the
OSS sensor
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 61
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
Replace the
TCM.
7
1. Estimate the failure of T/M wire.
2. Inspect continuity and short circuit for the T/M
wire and inspect the connection condition between connectors (C–4). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
5A2 – 62IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0727
ENGINE SPEED INPUT CIRCUIT NO SIGNAL
Conditions for Setting the DTC
S
TCM detects that malfunction of engine speed signal for 2 seconds.
S
No DTCs U2105
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
No engine torque reduction control
S
No lock–up
S
No engagement pressure control
S
No 4th gear
S
No self–learning control
S
No timing solenoid control for N–D
S
TCM judges the engine revolution is 0 rpm.
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Wiring harness or connector between ECM and
TCM
S
ECM
S
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 63
DTC P0727 Engine Speed Input Circuit No Signal
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector.
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0727 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector.
3
1. Turn the ignition OFF.
2. Disconnect the TCM wiring connector and
ECM wiring connector.
3. Measure the resistance between terminal A17
of the TCM wiring connector and terminal 88 of
the ECM wiring connector.
4. Measure the resistance between terminal A7 of
the TCM wiring connector and terminal 57 of
the ECM wiring connector.
Is the resistance within the values shown?
0W
Go to Step 5
Go to Step 4
4
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
5
1. Turn the ignition ON.
2. Measure the voltage of terminal A17.
3. Measure the voltage of terminal A7.
Is the voltage within the values shown?
11–14 v
Go to Step 6
Go to Step 7
6
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
7
1. Inspect the ”Engine Speed”. Refer to Section
1F, Diagnosis.
Was a problem found?
–
Refer to Section 1F, Diagnosis.
Go to Step 8
8
1. Replace the TCM.
2. Turn the ignition OFF.
3. Turn the ignition ON.
4. Check if P0727 DTC is set.
Is the DTC set?
–
Go to Step 9
Go to Step 10
DAEWOO V–121 BL4
5A2 – 64IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
9
Replace the ECM.
Is the action complete?
–
Go to Step 10
–
10
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
exit DTC chart
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 65
DIAGNOSTIC TROUBLE CODE (DTC) P0741
TORQUE CONVERTER CLUTCH (TCC) CIRCUIT STUCK
OFF
Conditions for Setting the DTC
S
Lockup solenoid is stuck OFF.
S
D range selected
S
Engine water normal temperature
S
20 seconds have passed since the transaxle was
placed in D.
S
Engine revolution is 600 rpm or greater.
S
No failure of input speed sensor / engine revolution
/ water temperature signal / solenoid electrical /
ranger sensor / throttle signal
Conditions for Clearing the DTC
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycles.
S
S
S
S
DAEWOO V–121 BL4
S
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
Lockup solenoid
Inside A/T
Inside valve body
TCM
5A2 – 66IAISIN AUTOMATIC TRANSAXLE
DTC P0741 Torque Converter Clutch (TCC) Circuit Stuck Off
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Maifunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0741 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Replace the master TCM and perform simulation test again under user condition.
Is DTC P0741 reappeared?
–
Go to Step 4
Replace the
TCM
4
1. Estimate the failure of lockup solenoid, lockup
clutch or internal valve body.
2. Inspect the lockup solenoid. Refer to ”Unit Inspection” in this section.
Is the condition of lockup solenoid OK?
–
Go to Step 5
Replace lockup
solenoid
5
1. Estimate the failure of lockup clutch or internal
valve body.
Is problem found?
–
Replace the
valve body assembly
System OK
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 67
DIAGNOSTIC TROUBLE CODE (DTC) P0742
TORQUE CONVERTER CLUTCH (TCC) CIRCUIT STUCK
ON
Conditions for Setting the DTC
S
Lockup solenoid is stuck ON.
S
D range selected
S
Engine water normal temperature
S
20 seconds have passed since the transaxle was
placed in D.
S
Engine revolution is 600 rpm or greater.
S
No failure of input speed sensor / engine revolution
/ water temperature signal / solenoid electrical /
ranger sensor / throttle signal
Conditions for Clearing the DTC
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycles.
S
S
S
S
DAEWOO V–121 BL4
S
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
Lockup solenoid
Inside A/T
Inside valve body
TCM
5A2 – 68IAISIN AUTOMATIC TRANSAXLE
DTC P0742 Torque Converter Clutch (TCC) Circuit Stuck On
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0742 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
3
1. Turn the ignition OFF.
2. Replace the master TCM and perform simulation test again under user condition.
Is DTC P0742 reappeared?
–
Go to Step 4
Replace the
TCM
4
1. Estimate the failure of lockup solenoid, lockup
clutch or internal valve body.
2. Inspect the lockup solenoid. Refer to ”Unit Inspection” in this section.
Is the condition of lockup solenoid OK?
–
Go to Step 5
Replace lockup
solenoid
5
1. Estimate the failure of lockup clutch or internal
valve body.
Is problem found?
–
Replace the
valve body assembly
System OK
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 69
DIAGNOSTIC TROUBLE CODE (DTC) P0743
TORQUE CONVERTER CLUTCH (TCC) ELECTRICAL
Conditions for Setting the DTC
S
TCM detects that the ON signal of the lockup solenoid monitor during 0.5 seconds when lockup solenoid driver outputs the OFF signal.(When the TCC
circuit is open or short to battery).
S
The above detection 2 times at shifting continuously.(When the Tcc circuit is open or short to battery).
S
TCM detects that the OFF signal of the lockup solenoid monitor during 0.3 seconds when lockup solenoid driver outputs the ON signal.(When the TCC
circuit is short to ground).
S
The above detection 1 time at shifting continuously.(When the TCC circuit is short to ground).
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycles.
S
No TCC lockup solenoid
S
1st gear fixed under the 10km/h
DAEWOO V–121 BL4
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects the ON signal of the lockup solenoid
monitor during 160 ms when lockup solenoid driver
outputs the ON signal and TCM detects the OFF
signal of the lockup solenoid monitor during 160 ms
when lockup solenoid driver outputs the OFF signal.
Cause of Failure
S
Wiring harness or connector between lockup solenoid and TCM
S
Lockup solenoid
S
TCM
5A2 – 70IAISIN AUTOMATIC TRANSAXLE
DTC P0743 Torque Converter Clutch (TCC) Electrical
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0743 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and lock–up solenoid. Refer to ”Unit Inspection” in this section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A5
and A23.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and lockup solenoid.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between lock–up
solenoid connector terminal 4 and ground.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 7
Go to Step 8
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
Replace the
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 71
Step
Action
Value(s)
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector Inspection” in
this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of lockup solenoid.
2. Inspect the lockup solenoid. Refer to ”Unit Inspection” in this section.
Is the problem found?
–
Replace the
lockup solenoid
Go to Step 9
9
1. Estimate the failure of T/M wire.
Inspect continuity and short circuit for the T/M wire
and inspect the connection condition between connectors (C–6). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
Yes
No
5A2 – 72IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0748
PRESSURE CONTROL SOLENOID (PCS) ELECTRICAL
Conditions for Setting the DTC
S
TCM detects that the feed back voltage is greater
than 4.9 volts and detects the detection 500 milliseconds continuously.(When the PCS circuit is
short to battery).
S
TCM detects that the feed back voltage is less than
70.mV for 70 milliseconds and detects the 12.5
seconds continuously.(When the PCS circuit is
short to ground or open).
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
No lockup control
S
No engine torque reduction control
S
No engagement pressure control
S
No 4th gear
S
S
No self–learning control
After failure decision : emergency mode
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects the feed back voltage is between
70mV and 4.9 v for 12.5 seconds continuously.
Cause of Failure
S
Wiring harness or connector between Pressure
Control Solenoid (PCS) and TCM
S
PCS
S
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 73
DTC P0748 Pressure Control Solenoid (PCS) Electrical
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0748 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Pressure Control Solenoid (PCS).
Refer to ”Unit Inspection” in this section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A4
and A2.
Is the measurement within the specified value?
20°C (68°F)
5.0–5.6 W
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and PCS.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between PCS connector terminal 3 and 8.
Is the measurement within the specified value?
20°C (68°F)
5.0–5.6 W
Go to Step 7
Go to Step 8
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
Replace the
TCM
DAEWOO V–121 BL4
5A2 – 74IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector” in this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of PCS.
2. Inspect the PCS. Refer to ”Unit Inspection” in
this section.
Is the problem found?
–
Replace the
valve body assembly.(No replacement PCS
by itself)
Go to Step 9
9
1. Estimate the failure of T/M wire.
Inspect continuity and short circuit for the T/M wire
and inspect the connection condition between connectors (C–6). Refer to ”Wiring Harness and Connector” in this section.
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 75
DIAGNOSTIC TROUBLE CODE (DTC) P0751
SHIFT SOLENOID 1 (SS1) STUCK OFF
S
Conditions for Setting the DTC
S
S
S
S
S
S
Shift Solenoid 1 (SS1) is stuck ON/OFF.
D range selected
Engine water normal temperature
20 seconds have passed since the transaxle was
placed in D.
Engine revolution is 600 rpm or greater.
No failure of output speed sensor / input speed
sensor / engine revolution / water temperature signal / solenoid electrical / ranger sensor / throttle
signal
Action Taken When the DTC Sets
DAEWOO V–121 BL4
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycles.
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Shift Solenoid 1 (SS1)
S
Inside Valve Body
S
TCM
5A2 – 76IAISIN AUTOMATIC TRANSAXLE
DTC P0751 Shift Solenoid 1 (SS1) Stuck Off
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0751 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector” in
this section.)
3
1. Turn the ignition OFF.
2. Replace the master TCM and perform simulation test again under user condition.
Is DTC P0751 reappeared?
–
Go to Step 4
Replace the
TCM.
4
1. Estimate the failure of Shift Solenoid 1 or internal valve body.
2. Inspect the SS1. Refer to ”Unit Inspection” in
this section.
Is the condition of SS1 OK?
–
Replace the
valve body assembly.
Replace Shift
Solenoid 1
(SS1).
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 77
DIAGNOSTIC TROUBLE CODE (DTC) P0753
SHIFT SOLENOID 1 (SS1) ELECTRICAL
Conditions for Setting the DTC
S
S
S
TCM detects that the ON signal of the Shift Solenoid 1 (SS1) monitor during 0.5 seconds when SS1
driver outputs the OFF signal.(When the SS1 circuit
is open or short to battery).
TCM detects that the OFF signal of the Shift Solenoid 1 (SS1) monitor during 0.3 seconds when SS1
driver outputs the ON signal.(When the SS1 circuit
is short to ground).
The above detection 2 times at shifting continuously.
Action Taken When the DTC Sets
S
S
S
S
S
S
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
No lockup control
No engine torque reduction control
No engagement pressure control
No timing solenoid control for N–D
No self–learning control
After failure decision : emergency mode
DAEWOO V–121 BL4
TCM Shifting Pattern (Range : D)
Normal
SS1 FAIL
Gear
SS1
SS2
Gear
SS1
SS2
1 st
ON
ON
3 rd
FAIL
OFF
2 nd
ON
OFF
3 rd
FAIL
OFF
3 rd
OFF
OFF
3 rd
FAIL
OFF
4 th
OFF
ON
4 th
FAIL
ON
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects the ON signal of the SS1 monitor during 160 ms when SS1 driver outputs the ON signal
and TCM detects the OFF signal of the SS1 monitor during 160 ms when SS1 driver outputs the
OFF signal.
5A2 – 78IAISIN AUTOMATIC TRANSAXLE
Cause of Failure
S
Wiring harness or connector between Shift Sole-
S
S
noid 1 (SS1) and TCM
SS1
TCM
DTC P0753 Shift Solenoid 1 (SS1) Electrical
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0753 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Shift Solenoid 1 (SS1). Refer to ”Unit
Inspection” in this section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A16
and A23.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and SS1.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between SS1 connector terminal 5 and ground.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 7
Go to Step 8
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 79
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
Replace the
TCM
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector Inspection” in
this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of SS1.
2. Inspect the SS1. Refer to ”Unit Inspection” in
this section.
Is the problem found?
–
Replace the
SS1 solenoid
Go to Step 9
9
1. Estimate the failure of T/M wire.
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
3. Inspect continuity and short circuit for the T/M
wire and inspect the connection condition between connectors (C–6). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
DAEWOO V–121 BL4
5A2 – 80IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0756
SHIFT SOLENOID 2 (SS2) STUCK OFF
Conditions for Setting the DTC
S
Shift Solenoid 2 (SS2) is stuck ON/OFF.
S
D range selected
S
Engine water normal temperature
S
20 seconds have passed since the transaxle was
placed in D.
S
Engine revolution is 600 rpm or greater.
S
No failure of output speed sensor / input speed
sensor / engine revolution / water temperature signal / solenoid electrical / ranger sensor / throttle
signal
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects failures on two consecutive ignition cycles.
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Shift Solenoid 2 (SS2)
S
Inside Valve Body
S
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 81
DTC P0756 Shift Solenoid 2 (SS2) Stuck Off
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform two vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0756 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Replace the master TCM and perform simulation test again under user condition.
Is DTC P0756 reappeared?
–
Go to Step 4
Replace the
TCM.
4
1. Estimate the failure of Shift Solenoid 2 or internal valve body.
2. Inspect the SS2. Refer to ”Unit Inspection” in
this section.
Is the condition of SS2 OK?
–
Replace the
valve body assembly.
Replace Shift
Solenoid 2
(SS2).
DAEWOO V–121 BL4
5A2 – 82IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P0758
SHIFT SOLENOID 2 (SS2) ELECTRICAL
Conditions for Setting the DTC
S
S
S
TCM detects that the ON signal of the Shift Solenoid 2 (SS2) monitor during 0.5 seconds when SS2
driver outputs the OFF signal.(When the SS2 circuit
is open or short to battery).
TCM detects that the OFF signal of the Shift Solenoid 2 (SS2) monitor during 0.3 seconds when SS2
driver outputs the ON signal.(When the SS2 circuit
is short to ground).
The above detection 2 times at shifting continuously.
Action Taken When the DTC Sets
S
S
S
S
S
S
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
No lockup control
No engine torque reduction control
No engagement pressure control
No timing solenoid control for N–D
No self–learning control
After failure decision : emergency mode
TCM Shifting Pattern (Range : D)
Normal
SS2 FAIL
Gear
SS1
SS2
Gear
SS1
SS2
1 st
ON
ON
2 nd
ON
FAIL
2 nd
ON
OFF
2 nd
ON
FAIL
3 rd
OFF
OFF
3 rd
OFF
FAIL
4 th
OFF
ON
3 rd
OFF
FAIL
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects the ON signal of the SS2 monitor during 160 ms when SS2 driver outputs the ON signal
and TCM detects the OFF signal of the SS2 monitor during 160 ms when SS2 driver outputs the
OFF signal.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 83
Cause of Failure
S
Wiring harness or connector between Shift Sole-
S
S
noid 2 (SS2) and TCM
SS2
TCM
DTC P0758 Shift Solenoid 2 (SS2) Electrical
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0758 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Shift Solenoid 2 (SS2). Refer to ”Unit
Inspection” in this section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A15
and A23.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and SS2.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between SS2 connector terminal 10 and ground.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 7
Go to Step 8
DAEWOO V–121 BL4
5A2 – 84IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
Replace the
TCM
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector Inspection” in
this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of SS2.
2. Inspect the SS2. Refer to ”Unit Inspection” in
this section.
Is the problem found?
–
Replace the
SS2 solenoid
Go to Step 9
9
1. Estimate the failure of T/M wire.
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
3. Inspect continuity and short circuit for the T/M
wire and inspect the connection condition between connectors (C–6). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 85
DIAGNOSTIC TROUBLE CODE (DTC) P0785
TIMING SOLENOID (ST) ELECTRICAL
Conditions for Setting the DTC
S
S
S
TCM detects that the ON signal of the Timing Solenoid (ST) monitor during 0.5 seconds when ST driver outputs the OFF signal.(When the ST circuit is
open or short to battery).
TCM detects that the OFF signal of the Timing Solenoid (ST) monitor during 0.1 seconds when ST
driver outputs the ON signal.(When the ST circuit is
short to ground).
The above detection 3 times at shifting continuously.
Action Taken When the DTC Sets
S
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
After failure decision : emergency mode
DAEWOO V–121 BL4
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
S
TCM detects the ON signal of the ST monitor during 100 ms when ST driver outputs the ON signal
and TCM detects the OFF signal of the ST monitor
during 160 ms when ST driver outputs the OFF signal.
Cause of Failure
S
Wiring harness or connector between Timing Solenoid (ST) and TCM
S
ST
S
TCM
5A2 – 86IAISIN AUTOMATIC TRANSAXLE
DTC P0785 Timing Solenoid (ST) Electrical
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P0785 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
3
1. Turn the ignition OFF.
2. Inspect the resistance between the vehicle harness and Timing Solenoid (ST). Refer to ”Unit
Inspection” in this section.
3. Disconnect the TCM connector (X–1) and inspect the resistance between the terminal A24
and A23.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 4
Go to Step 5
4
1. Estimate the failure of between the vehicle wiring harness connector and TCM.
2. Inspect the connector. Refer to ”Wiring Harness and Connector Inspection” in this section.
3. Inspect the connection condition between the
connectors (C–1).
Is the connection condition OK?
–
Go to Step 6
Repair the wiring harness
connectors.
5
1. Estimate the failure of between the vehicle harness and ST.
2. Disconnect the connector (X–3) of T/M wire
and inspect the resistance between ST connector terminal 2 and ground.
Is the measurement within the specified value?
20°C (68°F)
11–16 W
Go to Step 7
Go to Step 8
6
1. Replace the master TCM.
2. Perform the reproducing test under user condition after confirming no DTC.
Is DTC displayed?
–
Repair the temporary connection failure of
connector (Refer to ”Wiring
Harness and
Connector Inspection” in this
section.)
Replace the
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 87
Step
Action
Value(s)
7
1. Estimate the failure of the vehicle wiring harness or between connectors.
2. Inspect continuity and short circuit for the vehicle wiring harness and inspect the connection
condition between connectors (C–3). Refer to
”Wiring Harness and Connector Inspection” in
this section.
Is the condition OK?
–
Repair the tem- Replace the veporary connechicle harness
tion failure of
or adjustment
connector
between connectors
8
1. Estimate the failure of T/M wire or between
connectors of ST.
2. Inspect the ST. Refer to ”Unit Inspection” in
this section.
Is the problem found?
–
Replace the ST
Go to Step 9
9
1. Estimate the failure of T/M wire.
Inspect continuity and short circuit for the T/M wire
and inspect the connection condition between connectors (C–6). Refer to ”Wiring Harness and Connector Inspection” in this section.
Is the condition OK?
–
Repair the temporary connection failure of
connector
Replace the
T/M wire or adjustment between connectors
DAEWOO V–121 BL4
Yes
No
5A2 – 88IAISIN AUTOMATIC TRANSAXLE
DIAGNOSTIC TROUBLE CODE (DTC) P1781
ENGINE TORQUE SIGNAL ERROR
Conditions for Setting the DTC
S
S
TCM detects that malfunction of engine speed signal for 2 seconds.
No DTC U2105
Action Taken When the DTC Sets
S
S
S
S
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
No engine torque reduction control
No engagement pressure control
No 4th gear
No self–learning control
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Wiring harness or connector between ECM and
TCM
S
ECM
S
TCM
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 89
DTC P1781 Engine Torque Signal Error
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycles.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector.
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P1781 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector.
3
1. Turn the ignition OFF.
2. Disconnect the TCM wiring connector and
ECM wiring connector.
3. Measure the resistance between terminal A17
of the TCM wiring connector and terminal 88 of
the ECM wiring connector.
4. Measure the resistance between terminal A7 of
the TCM wiring connector and terminal 57 of
the ECM wiring connector.
Is the resistance within the values shown?
0W
Go to Step 5
Go to Step 4
4
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
5
1. Turn the ignition ON.
2. Measure the voltage of terminal A17.
3. Measure the voltage of terminal A7.
Is the voltage within the values shown?
11–14 v
Go to Step 6
Go to Step 7
6
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
7
1. Inspect the ”Engine Speed”. Refer to Section
1F, Diagnosis.
Was a problem found?
–
Refer to Section 1F, Diagnosis.
Go to Step 8
8
1. Replace the TCM.
2. Turn the ignition OFF.
3. Turn the ignition ON.
4. Check if P1781 DTC is set.
Is the DTC set?
–
Go to Step 9
Go to Step 10
DAEWOO V–121 BL4
5A2 – 90IAISIN AUTOMATIC TRANSAXLE
Step
Action
Value(s)
Yes
No
9
Replace the ECM.
Is the action complete?
–
Go to Step 10
–
10
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
exit DTC chart
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 91
DIAGNOSTIC TROUBLE CODE (DTC) P1791
THROTTLE POSITION SIGNAL ERROR
Conditions for Setting the DTC
S
TCM detects that malfunction of throttle position
signal for 2 seconds continuously.
S
No DTC U2105
S
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
TCM judges the throttle opening is 0% for shift
point control.
S
TCM judges the throttle opening is 100% for line
pressure control.
S
No lock–up
S
No 4th gear
S
No self–learning control
S
DAEWOO V–121 BL4
No timing solenoid control for N–D
Conditions for Clearing the DTC
S
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
The scan tool can clear the DTC from the TCM history.
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Wiring harness or connector between ECM and
TCM
S
ECM
S
TCM
5A2 – 92IAISIN AUTOMATIC TRANSAXLE
DTC 1791 Throttle Position Signal Error
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector.
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC P1791 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector.
3
1. Turn the ignition OFF.
2. Disconnect the TCM wiring connector and
ECM wiring connector.
3. Measure the resistance between terminal A17
of the TCM wiring connector and terminal 88 of
the ECM wiring connector.
4. Measure the resistance between terminal A7 of
the TCM wiring connector and terminal 57 of
the ECM wiring connector.
Is the resistance within the values shown?
0W
Go to Step 5
Go to Step 4
4
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
5
1. Turn the ignition ON.
2. Measure the voltage of terminal A17.
3. Measure the voltage of terminal A7.
Is the voltage within the values shown?
11–14 v
Go to Step 6
Go to Step 7
6
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
7
1. Replace the TCM.
2. Turn the ignition OFF.
3. Turn the ignition ON.
4. Check if P1791 DTC is set.
Is the DTC set?
–
Go to Step 8
Go to Step 9
8
Replace the ECM.
Is the action complete?
–
Go to Step 9
–
9
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
exit DTC chart
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 93
DIAGNOSTIC TROUBLE CODE (DTC) P1792
ENGINE COOLANT TEMPERATURE (ECT) SIGNAL
ERROR
Conditions for Setting the DTC
S
S
TCM detects malfunction of Engine Coolant Temperature (ECT) signal for 2 seconds continuously.
No DTC U2105
Action Taken When the DTC Sets
S
S
TCM will not request the illumination of MIL, but will
store DTC when TCM detects a failure on the first
ignition cycle.
TCM judges the engine coolant temperature 90 degrees when lapse 15 minutes from ignition ON.
DAEWOO V–121 BL4
Conditions for Clearing the DTC
S
The scan tool can clear the DTC from the TCM history.
S
The TCM clears the DTC from the TCM history
memory after forty consecutive warm up cycles
without fault.
Cause of Failure
S
Wiring harness or connector between ECM and
TCM
S
ECM
S
TCM
5A2 – 94IAISIN AUTOMATIC TRANSAXLE
DTC P1792 Engine Coolant Temperature (ECT) Signal Error
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
5. Clear DTC Information.
6. Perform one vehicle drive cycle.
7. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
8. Request DTC by Status.
Is DTC P1792 displayed?
–
Go to Step 2
Repair the temporary connection failure of
connector.
2
1. Turn the ignition OFF.
2. Disconnect the TCM wiring connector and
ECM wiring connector.
3. Measure the resistance between terminal A17
of the TCM wiring connector and terminal 88 of
the ECM wiring connector.
4. Measure the resistance between terminal A7 of
the TCM wiring connector and terminal 57 of
the ECM wiring connector.
Is the resistance within the values shown?
0W
Go to Step 4
Go to Step 3
3
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
4
1. Turn the ignition ON.
2. Measure the voltage of terminal A17.
3. Measure the voltage of terminal A7.
Is the voltage within the values shown?
11–14 v
Go to Step 5
Go to Step 6
5
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
6
1. Replace the TCM.
2. Turn the ignition OFF.
3. Turn the ignition ON.
4. Check if P1792 DTC is set.
Is the DTC set?
–
Go to Step 7
Go to Step 8
7
Replace the ECM.
Is the action complete?
–
Go to Step 8
–
8
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
exit DTC chart
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 95
DIAGNOSTIC TROUBLE CODE (DTC) U2105
CAN ERROR
Conditions for Setting the DTC
S
TCM detects that the BUS OFF signal. This detection is continued for 0.2 seconds.
S
TCM detects that nothing of ECM signal on CAN
BUS for 0.2 seconds. This detection is continued
for 2.0 seconds.
Action Taken When the DTC Sets
S
TCM will request the illumination of MIL and store
DTC when TCM detects a failure on the first ignition
cycle.
S
TCM judges the throttle opening is 0% for shift
point and lock–up point control.
S
TCM judges the throttle opening is 100% for line
pressure control.
S
No lock–up
DAEWOO V–121 BL4
S
S
S
No self–learning control
No 4th gear
TCM judges the engine revolution is 0 rpm.
Conditions for Clearing the DTC
S
The TCM turns off the MIL when no further failures
detected for three consecutive ignition cycles.
S
The scan tool can clear the DTC from the TCM history.
S
TCM detects the BUS normal signal for 2 seconds
continuously.
Cause of Failure
S
Wiring harness or connector between ECM and
TCM
S
ECM
S
TCM
5A2 – 96IAISIN AUTOMATIC TRANSAXLE
DTC U2105 CAN Error
Step
Action
Value(s)
Yes
No
1
1. Turn the ignition OFF.
2. Install the Scan tool.
3. With the engine OFF, turn the ignition switch to
the ON position.
4. Select Store Freeze Frame/Failure Records
from the Diagnostic Trouble Codes Information
menu.
5. Store Freeze Frame/Failure Records.
6. Select Clear DTC Information from the Diagnostic Trouble Codes Information menu.
7. Clear DTC Information.
8. Perform one vehicle drive cycle.
Is the Malfunction Indicator Lamp (MIL) ON?
–
Go to Step 2
Repair the temporary connection failure of
connector.
2
1. Select Request DTC by Status from the Diagnostic Trouble Codes Information menu.
2. Request DTC by Status.
Is DTC U2105 displayed?
–
Go to Step 3
Repair the temporary connection failure of
connector.
3
1. Turn the ignition OFF.
2. Disconnect the TCM wiring connector and
ECM wiring connector.
3. Measure the resistance between terminal A17
of the TCM wiring connector and terminal 88 of
the ECM wiring connector.
4. Measure the resistance between terminal A7 of
the TCM wiring connector and terminal 57 of
the ECM wiring connector.
Is the resistance within the values shown?
0W
Go to Step 5
Go to Step 4
4
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
5
1. Turn the ignition ON.
2. Measure the voltage of terminal A17.
3. Measure the voltage of terminal A7.
Is the voltage within the values shown?
11–14 v
Go to Step 6
Go to Step 7
6
Repair the malfunctioning terminals as necessary.
Is the action complete?
–
System OK
–
7
1. Replace the TCM.
2. Turn the ignition OFF.
3. Turn the ignition ON.
4. Check if U2105 DTC is set.
Is the DTC set?
–
Go to Step 8
Go to Step 9
8
Replace the ECM.
Is the action complete?
–
Go to Step 9
–
9
1. After the repair, use a scan tool ”clear info”
function and road test the vehicle.
2. Review the ”DTC info”.
Has the last test failed or is the current DTC displayed?
–
Begin diagnosis again
Repair verified
exit DTC chart
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 97
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
TRANSAXLE FLUID LEVEL
CHECKING PROCEDURE
Notice : Check the fluid level when the transaxle temperature is 70°C~80°C (158°F~176°F).
Notice : During the fluid level check, the selector lever
must be in position P.
Notice : When adding fluid or making a complete fluid
change, always use ISU DEXRON III. Failure to use the
proper fluid will cause hose and seal damage and fluid
leaks.
1.
2.
3.
4.
5.
6.
Make sure the vehicle is level.
Shift into all range from ”P” to ”1” and return to ”P”
with engine idling.
Remove the transaxle fluid dipstick and check the
transaxle fluid level.
The correct fluid level must be between the HOT
MIN and the HOT MAX notches on the dipstick.
If the fluid level is below the MIN notch, add transaxle fluid through the fluid filler tube and check for
leaks in the transaxle.
If the fluid above the MAX notch, the transaxle is
overfilled. Drain some of the fluid through the fluid
pan drain plug. Check the transaxle fluid level.
FLUID DRAIN PROCEDURE
Draining Procedure
1.
2.
3.
4.
5.
Raise and support the vehicle. Refer to ”Vehicle
Lifting Procedures,” Section 0B, General Information.
Place a suitable fluid drainage container under the
transaxle.
Remove the fluid drain plug. allow the fluid to drain
completely.
Clean the drain plug threads.
Install the fluid drain plug.
Tighten
Torque the fluid drain plug to 17 NSm (13 Ib–ft).
DAEWOO V–121 BL4
5A2 – 98IAISIN AUTOMATIC TRANSAXLE
Filling Procedure
1.
2.
3.
4.
5.
Remove the drainage container and lower the vehicle.
Add three–fourths of the recommended amount of
ISU DEXRON III.
Start the engine and allow it to reach normal operating temperature.
Shift the gear selector through all positions.
Check the fluid level and add fluid until the dipstick
indicates a safe level.
LOCATING FLUID LEAKS
General Method
1.
2.
3.
4.
5.
6.
Verify that the material leaking is transaxle fluid.
Thoroughly clean the suspected leak area.
Allow the transaxle to reach the normal operating
temperature of 176–194°F (80–90°C).
Park the vehicle over a clean paper or a clean cardboard.
Turn the engine OFF and look for fluid spots on the
paper.
Make the necessary repairs to correct that leak.
Powder Method
1.
2.
Thoroughly clean the suspected leak area.
Apply an aerosol type powder, such as foot powder,
to the suspected leak area.
3. Allow the transaxle to reach the normal operating
temperature of 176–194°F (80–90°C).
4. Turn the engine OFF.
5. Inspect the suspected leak area and trace the leak
path through the powder to find the source of the
leak.
6. Make the necessary repairs to correct the leak.
Once the leak point is found, the source of the leak must
be determined and repaired.
CASE PORSITY REPAIR
1.
2.
Determine the leak area. Refer to ”Locating Fluid
Leaks” in this section.
Clean the leak area with the solvent. Air dry.
CAUTION : Epoxy cement may cause skin irritations
and eye damage. Read and follow all information on
the container label as provided by the manufacturer.
3.
4.
5.
Mix a sufficient amount of epoxy cement following
the manufacturer’s recommendations.
While the transaxle case is hot, apply epoxy cement with a clean, dry soldering acid brush.
Allow the epoxy cement to dry for 3 hours before
starting the engine.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 99
FLUID COOLER FLUSHING
Flushing Procedure
1.
2.
3.
Drain the fluid from the transaxle and refill the
transaxle with new transaxle fluid. Refer to ”Fluid
Drain Procedure” in this section.
Let the engine idle for 5 minutes.
Drain the fluid from the transaxle and refill the
transaxle with new transaxle fluid. Refer to ”Fluid
Drain Procedure” in this section.
CONTROL CABLE ADJUSTMENT
Adjustment Procedure
The various shift control cable positions must match at the
shift control lever in the vehicle and at the selector lever
on the transaxle to provide proper transaxle shifting.
Place the shift control lever in the PARK position and
check the selector lever connection to verify that it is in the
forward most position. If it is not, the following adjustment
must be performed:
1. Disconnect the negative battery cable.
2. Remove the floor console. Refer to Section 9G,
Interior Trim.
3. Place the shift control lever in the PARK position.
DAEWOO V–121 BL4
4.
Loosen the control cable adjusting nut.
5.
Move the Transmission Range (TR) switch lever
counterclockwise until stopping the lever.
5A2 – 100IAISIN AUTOMATIC TRANSAXLE
6.
Pull the shift control cable until it is tight and tighten
the control cable adjusting nut.
Tighten
7.
8.
Tighten the control cable adjusting nut to 8 NSm (71
Ib–in).
Install the floor console. Refer to Section 9G, Interior Trim.
Connect the negative battery cable.
SHIFT CONTROL LEVER ASSEMBLY
Removal Procedure
1.
2.
3.
Disconnect the negative battery cable.
Remove the floor console. Refer to Section 9G,
Interior Trim.
Disconnect the wiring harness connectors from the
shift control lever.
4.
5.
Loosen the control cable adjusting nut.
Disconnect the control cable from the shift control
lever assembly.
6.
Remove the shift control lever assembly mounting
bolts and nuts.
Remove the shift control lever assembly.
7.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 101
Installation Procedure
1.
Install the shift control lever assembly and mounting bolts and nuts.
Tighten
Tighten the shift control lever assembly mounting
bolts and nuts to 8 NSm (71 Ib–in).
2.
3.
Connect the control cable to the shift control lever
assembly.
Tighten the control cable adjusting nut.
Tighten
Tighten the control cable adjusting nut to 8 NSm (71
Ib–in).
4.
5.
6.
7.
Connect the harness connector.
Adjust the control cable. Refer to ”Control Cable
Adjustment” in this section.
Install the floor console. Refer to Section 9G, Interior Trim.
Connect the negative battery cable.
TRANSMISSION RANGE (TR)
SWITCH
Removal Procedure
1.
2.
DAEWOO V–121 BL4
Disconnect the negative battery cable.
Disconnect the Transmission Range (TR) switch
electrical connector from the wiring harness.
5A2 – 102IAISIN AUTOMATIC TRANSAXLE
3.
4.
Remove the E–ring.
Disconnect the shift control cable from the TR
switch lever.
5.
Remove the retaining nut and then remove the
washer and the control lever.
Using a driver, unstake the lock washer and remove the nut.
6.
Installation Procedure
1.
2.
Install the Transmission Range (TR) switch onto the
manual valve lever shaft and temporarily install the
2 adjusting bolts.
Install the new lock washer and nuts.
Tighten
Tighten the nuts to 12 NSm (106 Ib–in).
3.
4.
5.
Temporarily install the control lever.
Turn the lever counterclockwise until it stops, then
turn it clockwise 2 notches.
Remove the control lever.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 103
6.
Aligh the groove with the neutral basic line, then
install the 2 bolts.
Tighten
Tighten the 2 bolts to 5.4 NSm (48 Ib–in).
7.
Using a screw driver, stake the nut with the lock
washer.
8.
Install the control lever, washer and nut.
Tighten
Tighten the nut to 12 NSm (106 Ib–in).
9. Connect the control cable to TR switch.
10. Connect the TR switch electrical connector.
11. Adjust the control cable. Refer to ”Control Cable
Adjustment” in this section.
12. Install the control cable adjusting nut.
Tighten
Tighten the control cable adjusting nut to 8 NSm (71
Ib–in).
13. Connect the negative battery cable.
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5A2 – 104IAISIN AUTOMATIC TRANSAXLE
SHIFT CONTROL CABLE
Removal Procedure
1.
2.
3.
4.
Disconnect the negative battery cable.
Remove the floor console. Refer to Section 9G,
Interior Trim.
Remove the cable adjusting nut.
Disconnect the shift control cable from the shift
control lever assembly.
5.
6.
Remove the shift control cable retaining E–ring.
Disconnect the shift control cable from the TR
switch.
7.
Remove the E–ring from the shift control cable
bracket and disconnect the shift control cable.
Disconnect the shift control cable from the shift
control cable fastener.
Remove the shift control cable from the vehicle.
8.
9.
Installation Procedure
1.
2.
3.
Install the shift control cable to the vehicle.
Connect the shift control cable to the shift control
cable fastener.
Install the E–ring to the shift control cable bracket
and connect the shift control cable.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 105
4.
5.
Connect the shift control cable to the TR switch.
Install the shift control cable retaining E–ring.
6.
Connect the shift control cable to the shift control
lever assembly.
Install the cable adjusting nut.
7.
Tighten
8.
9.
Tighten the cable adjusting nut to 8 NSm (71 Ib–in).
Install the trim panel to the floor console. Refer to
Section 9G, Interior Trim.
Connect the negative battery cable.
SHIFT SELECT COVER
Removal Procedure
1.
2.
3.
4.
5.
DAEWOO V–121 BL4
Disconnect the negative battery cable.
Remove the floor console. Refer to Section 9G,
Interior Trim.
Remove the shift select lever knob.
Disconnect the connectors.
Remove the shift select cover from the shift select
housing.
5A2 – 106IAISIN AUTOMATIC TRANSAXLE
Installation Procedure
1.
2.
Connect the connectors to the shift select cover.
Install the shift select cover to the housing.
3.
4.
Install the shift select lever knob.
Install the floor console. Refer to Section 9G, Interior Trim.
Connect the negative battery cable.
5.
INPUT SHAFT SPEED (ISS) SENSOR
Removal Procedure
1.
2.
Disconnect the negative battery cable.
Disconnect the input shaft speed (ISS) sensor electrical connector.
3.
4.
Remove the ISS sensor retaining bolt.
Remove the ISS sensor from the transaxle.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 107
Installation Procedure
Notice : Lubricate the O–ring with ISU DEXRON III.
1. Install a new O–ring on the ISS sensor.
2. Install the ISS sensor and retaining bolt into the
transaxle case.
Tighten
Tighten the ISS sensor retaining bolt to 5.4 NSm (48
Ib–in).
3.
4.
Connect the ISS sensor electrical connector.
Connect the negative battery cable.
OUTPUT SHAFT SPEED (OSS)
SENSOR
Removal Procedure
DAEWOO V–121 BL4
1.
2.
Disconnect the negative battery cable.
Disconnect the output shaft speed (OSS) sensor
electrical connector.
3.
4.
Remove the OSS sensor retaining bolt.
Remove the OSS sensor from the transaxle.
5A2 – 108IAISIN AUTOMATIC TRANSAXLE
Installation Procedure
Notice : Lubricate the O–ring with ISU DEXRON III.
1. Install a new O–ring on the output shaft speed
(OSS) sensor.
2. Install the OSS sensor and retaining bolt into the
transaxle.
Tighten
Tighten the OSS sensor retaining bolt to 7.4 NSm (65
Ib–in).
3.
4.
Connect the OSS sensor electrical connector.
Connect the negative battery cable.
TRANSMISSION CONTROL MODULE
(TCM)
Removal Procedure
1.
2.
Disconnect the negative battery cable.
Disconnect the transmission control module (TCM)
electrical connector.
3.
4.
Remove the TCM retaining bolts.
Remove the TCM.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 109
Installation Procedure
1.
2.
Connect the negative battery cable.
Install the TCM and retaining bolts.
Tighten
Tighten the TCM retaining bolts to 5 NSm (44 Ib–in).
3.
4.
Connect the TCM electrical connector.
Connect the negative battery cable.
FLUID COOLER INLET PIPES AND
HOSES
Removal Procedure
1.
2.
3.
4.
5.
6.
7.
DAEWOO V–121 BL4
Raise and support the vehicle.
Drain the transaxle fluid.
Remove the clip from the hose, then disconnect the
hose from the fluid cooler inlet pipe.
Remove the inlet pipe union bolt from the radiator.
Remove the fluid cooler inlet pipe bolt from the
transaxle.
Remove the inlet pipe fitting nut from the transaxle.
Remove the fluid cooler inlet pipe and hoses.
5A2 – 110IAISIN AUTOMATIC TRANSAXLE
Installation Procedure
1.
Install the fluid cooler inlet pipe fitting nut into the
transaxle.
Tighten
Tighten the fluid cooler inlet pipe fitting nut to 35 NSm
(26 Ib–ft).
2.
Install the fluid cooler inlet pipe bolt into the transaxle.
Tighten
Tighten the fluid cooler inlet pipe bolt to 9 NSm (80 Ib–
in).
3.
Install the inlet pipe union bolt into the radiator.
Tighten
4.
5.
6.
Tighten the inlet pipe union bolt to 35 NSm (26 Ib–ft).
Connect the hose to inlet pipe and install the clip
into the hose.
Lower the vehicle.
Fill the transaxle with the fluid.
FLUID COOLER OUTLET PIPE AND
HOSES
Removal Procedure
1.
2.
3.
4.
5.
6.
Drain the transaxle fluid.
Remove the front outlet pipe union bolt from the
radiator.
Remove the clip from the hose.
Remove the rear outlet pipe clip bolt from the transaxle.
Remove the rear outlet pipe fitting nut from the
transaxle.
Remove the fluid cooler outlet pipe and hoses.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 111
Installation Procedure
1.
Install the fluid cooler rear outlet pipe fitting nut.
Tighten
2.
Tighten the fluid cooler rear outlet pipe fitting nut to 35
NSm (26 Ib–ft).
Install the fluid cooler rear outlet pipe clip bolt.
Tighten
Tighten the fluid cooler rear outlet pipe clip bolt to 9
NSm (80 Ib–in).
3.
Install the front outlet pipe union bolt into the radiator.
Tighten
4.
5.
Tighten the front outlet pipe union bolt to 35 NSm (26
Ib–ft).
Install the clip into the hose.
Fill the transaxle with the fluid.
TRANSAXLE ASSEMBLY
Tools Required
DW110–060 Engine Support Fixture
DW260–012 Transaxle Support Fixture (81–40 LE)
Removal Procedure
1.
2.
3.
4.
5.
6.
DAEWOO V–121 BL4
Remove the battery and battery tray. Refer to Section 1E, Engine Electrical.
Drain the transaxle fluid. Refer to ”Fluid Drain Procedure” in this section.
Remove the left and right drive axle assemblies.
Refer to Section 3A, Automatic Transaxle Drive
Axle.
Disconnect the fluid cooler inlet and outlet pipes
and hoses from the transaxle. Refer to ”Fluid Cooler Inlet or Outlet Pipe and Hoses” in this section.
Disconnect the shift control cable from the transaxle. Refer to ”Shift Control Cable” in this section.
Install engine support fixture DW110–060 to support the engine.
5A2 – 112IAISIN AUTOMATIC TRANSAXLE
7.
Disconnect the input shaft speed (ISS) sensor electrical connector.
8. Disconnect the output shaft speed (OSS) sensor
electrical connector.
9. Disconnect the Transmission Range (TR) Switch
electrical connector.
10. Disconnect the transaxle electrical connector.
11. Remove the service hall cover.
12. Remove the three torque converter bolts.
13. Remove the damping block connection nut and
bolt.
14. Remove the rear mounting bracket bolts and rear
mounting bracket.
15. Remove the three upper transaxle mounting bracket bolts.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 113
16. Remove the three upper transaxle–to–engine
mounting bolts.
17. Secure the transaxle to a transaxle jack and transaxle support fixture DW260–013.
18. Remove the seven lower transaxle–to–engine retaining bolts.
19. Carefully remove the transaxle from the vehicle.
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5A2 – 114IAISIN AUTOMATIC TRANSAXLE
Installation Procedure
1.
Secure the transaxle to the transaxle jack, then
carefully position in the vehicle.
2.
Install the seven lower transaxle–to–engine retaining bolts.
Tighten
Tighten the bolts(a) to 73 NSm (54 Ib–ft).
Tighten
Tighten the bolts(b) to 31 NSm (23 Ib–ft).
Tighten
Tighten the bolts(c) to 21 NSm (15 Ib–ft).
3.
Install the three upper transaxle–to–engine mounting bolts.
Tighten
Tighten the three upper transaxle–to–engine mounting bolts to 73 NSm (54 Ib–ft).
4.
Install the three upper transaxle mounting bracket
bolts and the bracket.
Tighten
Tighten the three upper transaxle mounting bracket
bolts to 60 NSm (44 Ib–ft).
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AISIN AUTOMATIC TRANSAXLE 5A2 – 115
5.
Install the rear mounting bracket bolts and the
bracket.
Tighten
6.
Tighten the rear mounting bracket bolts to 60 NSm (44
Ib–ft).
Install the damping block connection nut and bolt.
Tighten
Tighten the damping block connection nut and bolt to
80 NSm (59 Ib–ft).
7.
Install the torque converter bolts.
Tighten
8.
Tighten the torque converter bolts to 45 NSm (33 Ib–
ft).
Install the service hall cover.
9.
10.
11.
12.
Connect the transaxle electrical connector.
Connect the TR switch electrical connector.
Connect the OSS sensor electrical connector.
Connect the ISS sensor electrical connector.
13. Remove engine support fixture DW110–060.
14. Connect the shift control cable into the transaxle.
Refer to ”Shift Control Cable” in this section.
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5A2 – 116IAISIN AUTOMATIC TRANSAXLE
15. Connect the fluid cooler inlet and outlet pipe and
hose into the transaxle. Refer to ”Fluid Cooler Inlet
or Outlet Pipe and Hoses” in this section.
16. Install the left and right drive axle assemblies. Refer
to Section 3A, Automatic Transaxle Drive Axle.
17. Install the battery and battery tray. Refer to Section
1E, Engine Electrical.
18. Fill the transaxle with fluid. Refer to ”Fluid Drain
Procedure” in this section.
19. Check the fluid level. Refer to ”Transaxle Fluid Level Checking Procedure” in this section.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 117
UNIT REPAIR
MAJOR COMPONENT DISASSEMBLY
Tools Required
DW240–020 Brake/Clutch Spring Compressor
DW240–050 Overdrive Brake Adapter
DW240–060–01 Brake Spring Compressor Bolt/Nut
DW240–070 1st & Reverse Brake Adapter
DW240–080 2nd Brake Adapter
DW240–090 Planetary Ring Gear Remover
DW240–150 Transaxle Case Side Bearing Outer Race
Adapter
DW240–170 Adapter Handle
DW260–021–02 Automatic Transaxle Overhaul Fixture
(81–40 LE)
DW260–041 Planetary Ring Gear Nut Removal/Installation Socket
Disassembly Procedure
1.
2.
DAEWOO V–121 BL4
Remove the transaxle assembly from the vehicle.
Refer to”Transaxle Assembly” in this section.
Install the transaxle assembly to the transaxle support stand using Automatic Transaxle Overhaul Fixture DW260–021–02 (81–40 LE).
3.
4.
5.
Remove the nut, washer and control lever.
Using a screwdriver, unstake the lock washer.
Remove the two bolts and nut and pull out the
transmission range (TR) switch.
6.
7.
Remove the two unions the transaxle case.
Remove the two O–rings from the unions.
5A2 – 118IAISIN AUTOMATIC TRANSAXLE
8.
9.
Remove the screw plug from the transaxle case.
Remove the O–ring from the screw plug.
10. Remove the bolt and the input shaft speed (ISS)
sensor.
11. Remove the breather plug.
12. Remove the O–ring from the breather plug.
13. Remove the bolt and the output shaft speed (OSS)
sensor.
14. Remove the 18 bolts.
15. Remove the oil pan and gasket.
16. Remove the drain plug from the oil pan.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 119
17. Remove the three bolts and oil strainer.
18. Remove the gasket from the oil strainer.
19. Remove the bolt and transmission fluid temperature
sensor with the clamp.
20. Disconnect the 5 solenoid connectors.
a. Lock–up control solenoid
b. Pressure control solenoid.
c. No.2 shift solenoid.
d. No.1 shift solenoid.
e. Timing solenoid
21. Support the valve body assembly and remove the
14 bolts.
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5A2 – 120IAISIN AUTOMATIC TRANSAXLE
22. Disconnect the manual valve control rod from the
manual valve lever, then remove the valve body
assembly.
23. Remove the check valve and spring.
24. Remove the brake drum gasket.
25. Remove the apply gasket.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 121
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out. When removing the piston, hold it with your hand using a waste cloth.
Notice : Take care not to splash automatic transaxle fluid
(ATF) when air–blowing.
26. Apply 392 kPa (57 psi) of compressed air to the oil
hole and remove the direct clutch (C2) accumulator
piston and spring.
27. Remove the spring.
28. Remove the 2 O–rings from the direct clutch (C2)
accumulator piston.
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
29. Apply 392 kPa (57 psi) of compressed air to the oil
hole and remove the forward clutch (C1) accumulator piston and spring.
30. Remove the spring.
31. Remove the 2 O–rings from the forward clutch (C1)
accumulator piston.
DAEWOO V–121 BL4
5A2 – 122IAISIN AUTOMATIC TRANSAXLE
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
32. Apply 392 kPa (57 psi) of compressed air to the oil
hole and remove the O/D & 2nd brake (B1) clutch
accumulator piston and spring.
33. Remove the 2 O–rings from the O/D & 2nd brake
(B1) accumulator piston.
34. Remove the bolt and the transaxle wire from the
transaxle case.
35. Remove the O–ring from the transaxle wire.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 123
36. Remove the 16 bolts and tap on the circumference
of the transaxle housing with a plastic hammer to
remove the transaxle housing from the transaxle
case.
Important : Be careful not to drop the differential gear assembly when the transaxle housing is removed.
37. Using a dial indicator, measure the input shaft end
play.
S
End play : 0.3 0.9 mm (0.012–0.035 in.)
38. Remove the 6 bolts and oil pump.
39. Remove the differential gear assembly from the
transaxle case.
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5A2 – 124IAISIN AUTOMATIC TRANSAXLE
40. Remove the apply gasket.
41. Remove the direct clutch (C2) assembly from the
transaxle case.
42. Remove the thrust needle roller bearing from the
direct clutch assembly.
43. Remove the direct clutch (C2) hub, thrust needle
roller bearing and thrust bearing race from the
transaxle case.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 125
44. Remove the counter driven gear assembly from the
transaxle case.
45. Remove the 9 bolts and tap on the circumference
of the transaxle rear cover with a plastic hammer to
remove the transaxle rear cover from the transaxle
case.
46. Remove the 4 apply gaskets.
47. Remove 2nd coast & O/D brake (B1) flange, 2
discs and 2 plates from the transaxle case.
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5A2 – 126IAISIN AUTOMATIC TRANSAXLE
48. Remove the thrust needle roller bearing and forward & reverse clutch assembly.
49. Remove the thrust needle roller bearing and thrust
bearing race from the forward & reverse clutch assembly.
50. Remove the forward clutch hub from the transaxle
case.
51. Remove the thrust bearing race and thrust neddle
roller bearing from the forward clutch hub.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 127
52. Remove rear planetary sun gear and one–way
clutch assembly.
53. Remove the thrust bearing race from the rear planetary sun gear and one–way clutch assembly.
54. Remove the thrust needle roller bearing and planetary carrier thrust washer from the rear planetary
sun gear and one–way clutch assembly.
55. Remove the one–way clutch assembly and thrust
washer from the rear planetary sun gear.
DAEWOO V–121 BL4
5A2 – 128IAISIN AUTOMATIC TRANSAXLE
56. Remove the front planetary sun gear from the
transaxle case.
57. Remove the thrust bearing race from the front planetary sun gear.
WARNING : USE CAUTION WHEN REMOVING SNAP
RINGS OR PERSONAL INJURY MAY RESULT.
Notice : Stop the press when the 2nd brake is lowered 1–
2 mm (0.039–0.078 in.) from the snap ring groove, preventing the 2nd brake from being deformed.
58. Using brake spring compressor bolt/nut
DW240–060–01 and 2nd brake adapter
DW240–080, remove the 2 snap rings, 2nd brake
piston and 2nd brake piston return spring.
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
59. Apply 392 kPa (57 psi) of compressed air to the
2nd brake to remove the 2nd brake piston from the
2nd brake clutch cylinder.
60. Remove the 2 O–rings from the 2nd brake piston.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 129
61. Remove the 2 plates, 2 discs and flange.
62. Remove the No. 2 one–way clutch and planetary
gear from the transaxle case.
63. Remove the No. 2 one–way clutch from the planetary gear and remove the anti–rattle clip.
64. Fix the counter drive gear with the parking lock
pawl.
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5A2 – 130IAISIN AUTOMATIC TRANSAXLE
65. Remove the planetary ring gear nut using planetary
ring gear nut removal/installation socket DW
260–041.
Notice : Remove the nut without unstaking the planetary
ring gear. If chisel or other tool is used to unstake the planetary ring gear, such impact may damage the bearing.
66. Remove the 2 bolts and parking lock pawl bracket.
67. Remove the parking lock pawl shaft, torsion spring
and parking lock pawl.
68. Remove the bolt and manual detent spring.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 131
69. Using a chisel and hammer, unstake and remove
the spacer.
70. Using a pin punch and hammer, drive out the pin.
71. Remove the manual valve lever shaft and manual
valve lever.
72. Remove the parking lock rod from the manual valve
lever.
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5A2 – 132IAISIN AUTOMATIC TRANSAXLE
73. Using a screwdriver, remove the oil seal.
74. Using brake spring compressor bolt/nut
DW240–060–01, 1st & reverse brake adapter
DW240–070 and planetary ring gear remover
DW240–090, remove the planetary ring gear.
75. Install the 3 bolts to the counter drive gear.
S Bolt (M6) : L= 40–80mm, Pich = 1.0mm
76. Rotate 3 bolts in order and remove the counter
drive gear and planetary ring gear.
WARNING : USE CAUTION WHEN REMOVING SNAP
RINGS OR PERSONAL INJURY MAY RESULT.
77. Using brake spring compressor bolt/nut
DW240–060–01 and 1st & reverse brake adapter
DW240–070, remove the snap ring of 1st & reverse
brake.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 133
78. Remove the flange, 4 discs, 4 plates and return
spring.
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out. When removing the piston, hold it with your hand using a waste cloth.
Notice : Take care not to splash ATF when air–blowing
79. Apply 392 kPa (57 psi) of compressed air to the
transaxle case to remove the 1st & reverse brake
piston.
80. Remove the 2 O–rings from the 1st & reverse
brake piston.
81. Remove the bolt and No.1 transaxle case plate
from the transaxle case.
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5A2 – 134IAISIN AUTOMATIC TRANSAXLE
82. Using a suitable puller, remove the counter driven
gear outer tapered roller bearing race and shim
from the transaxle case.
83. Using a driver, remove the oil seal from the transaxle case.
Notice : Be careful not to damage the transaxle case
when removing the oil seal using a driver.
84. Using transaxle case side bearing outer race adapter DW240–150 and adapter handle DW240–170,
remove the transaxle case side bearing outer race
and shim.
85. Remove the 3 bolts and oil reservoir lock plate from
the transaxle housing.
86. Remove the bolt and No.1 transaxle apply pipe
clamp from the transaxle housing.
87. Remove the transaxle lube apply pipe and differential gear lube apply pipe from the transaxle housing.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 135
88. Using a suitable puller, remove the counter driven
gear outer tapered roller bearing race from the
transaxle housing.
89. Using a driver, remove the oil seal from the transaxle housing.
Notice : Be careful not to damage the transaxle housing
when removing the oil seal using a driver.
90. Using a suitable puller, remove the side bearing
outer race from the transaxle housing.
WARNING : USE CAUTION WHEN REMOVING SNAP
RINGS OR PERSONAL INJURY MAY RESULT.
Notice : Stop the press when the O/D brake piston is lowered 1–2 mm (0.039–0.078 in.) from the snap ring groove,
preventing the O/D brake piston from being deformed.
91. Using brake/clutch spring compressor DW240–020,
overdrive brake adapter DW240–050 and a driver,
remove the snap ring.
92. Remove the O/D brake return spring.
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5A2 – 136IAISIN AUTOMATIC TRANSAXLE
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’s jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
93. Apply 392 kPa (57 psi) of compressed air to the
transaxle rear cover to remove the O/D brake piston.
94. Remove the 2 O–rings from the O/D brake piston.
95. Remove the 2 seal rings from the transaxle rear
cover.
Notice : Do not expand the seal ring excessively.
96. Remove the 4 screw plugs and 4 O–rings from the
transaxle rear cover.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 137
MAJOR COMPONENT ASSEMBLY
Tools Required
DW240–020 Brake/Clutch Spring Compressor
DW240–050 Overdrive Brake Adapter
DW240–060–01 Brake Spring Compressor Bolt/Nut
DW240–060–02 Brake Spring Compressor Plate
DW240–070 1st / Reverse Brake Adapter
DW240–100 Counter Drive Gear Installation Adapter
DW240–130 Differential Preload Adapter
DW260–031–01 Transaxle Housing Oil Seal Installer
DW260–031–02 Transaxle Case Oil Seal Installer
DW260–041 Planetary Ring Gear Nut Removal/Installation Socket
DW240–160 Transaxle Case Outer Tapered Roller Bearing Race Adapter
DW240–140 Transaxle Housing Side Bearing Outer Race
Adapter
DW240–170 Adapter Handle
Assembly Procedure
1.
2.
Install 4 new O–rings to the 4 screw plugs.
Install the 4 screw plugs with the O–rings to the
transaxle rear cover.
Tighten
Tighten the screw plugs to 7.4 NSm (65 lb–in).
3.
Install the 2 seal rings to the transaxle rear cover.
4.
Using the vernier calipers, measure the free length
of the O/D brake piston return spring together with
the spring seat.
S
DAEWOO V–121 BL4
Standard free length : 18.99 mm (0.7476 in.)
5A2 – 138IAISIN AUTOMATIC TRANSAXLE
5.
Coat 2 new O–rings with ATF, install them to the
O/D brake piston.
6.
Coat the O/D brake piston with ATF, install it to the
transaxle rear cover.
Notice : Be careful not to damage the O–rings of the O/D
brake piston.
7.
Using brake/clutch spring compressor DW240–020,
overdrive brake adapter DW240–050 and a driver,
install the O/D brake return spring and snap ring to
the transaxle rear cover.
Notice : Stop the press when the O/D brake piston is lowered 1–2 mm (0.039 0.078 in.) from the snap ring groove,
preventing the O/D brake piston from being deformed.
8.
Using transaxle housing side bearing outer race
adapter DW240–140 and adapter handle
DW240–170, install a new side bearing outer race
into the transaxle housing.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 139
9.
Using transaxle housing oil seal installer
DW260–031–01 and a hammer, drive in a new
transaxle housing oil seal.
S
Oil seal in depth: 3.1mm (0.122 in.)
10. Install a new outer tapered roller bearing race into
the transaxle housing.
Notice : Press fit the outer tapered roller bearing race until it contacts the transaxle housing.
11. Install the transaxle lube apply pipe and differential
gear lube apply pipe to the transaxle housing.
12. Install the No.1 transaxle apply pipe clamp to the
transaxle housing with the bolt.
Tighten
Tighten the bolt to 5.4 NSm (48 lb–in).
13. Install the oil reservoir lock plate to the transaxle
housing with the 3 bolts.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).
DAEWOO V–121 BL4
5A2 – 140IAISIN AUTOMATIC TRANSAXLE
14. Install the shim to the transaxle case.
Notice : First install a shim of the same thickness as before.
15. Install a new bearing outer race into the transaxle
case.
16. Using transaxle case oil seal installer
DW260–031–02 and a hammer, drive in a new
transaxle case oil seal.
S
Oil seal in depth: 4.3 mm (0.169 in.)
17. Install the shim to the transaxle case.
Notice : First install a shim of the same thickness as before.
18. Using transaxle case outer tapered roller bearing
race adapter DW240–160 and adapter handle
DW240–170, press in a new outer tapered roller
bearing race into the transaxle case.
Notice : Press–fit the shim until it contacts the transaxle
case.
19. Install the No.1 transaxle case plate to the transaxle case with the bolt.
Tighten
Tighten the bolt to 9.8 NSm (87 lb–in).
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 141
20. Install the differential gear to the transaxle case.
21. Install the transaxle housing and tighten the 16
bolts of the transaxle housing temporarily.
22. Tighten 8 or 9 bolts out of 16 bolts of the transaxle
housing completely.
Tighten
Tighten the bolt to 29 NSm (22 lb–ft).
23. Using differential preload adapter DW240–130, turn
the differential gear assembly right and left 2 or 3
times to allow the bearing settle.
24. Using differential preload adapter DW240–130 and
small torque wrench, measure the preload of the
differential gear.
Notice : Note down the measured valve.
DAEWOO V–121 BL4
5A2 – 142IAISIN AUTOMATIC TRANSAXLE
25. Remove the transaxle housing and install the
counter driven gear.
26. Install the transaxle housing and tighten the 16
bolts of the transaxle housing temporarily.
27. Tighten the bolts of the transaxle housing in the
same manner as in step 22.
Tighten
Tighten the bolts to 29 NSm (22 lb–in).
28. Using differential preload adapter DW240–130, turn
the differential gear assembly right and left 2 or 3
times to allow the bearing settle.
29. Using differential preload adapter DW240–130 and
a small torque wrench, measure the preload of the
differential gear. From this valve deduct the valve
measured in step 23. This is the preload of the
counter driven gear.
S Preload:
New bearing: 0.33–0.76 NSm (3.21–6.77 lb–in)
Used bearing: 0.17–0.38 NSm (1.48–3.39 lb–in)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 143
If the preload of counter driven gear does not satisfy the
specification, select the adjuster shim from the table below
and remeasure the valve. Until the valve is within the specification, repeat the procedure.
Notice : When the preload is larger than the specification,
select a thinner adjuster shim. When the preload is smaller
than specification, select a thicker adjuster shim.
S Adjuster shim thickness: mm (in.)
Mark
Thickness
Mark
Thickness
1
1.70 (0.0669)
G
2.17 (0.0854)
2
1.75 (0.0689)
H
2.20 (0.0866)
3
1.80 (0.0709)
K
2.25 (0.0886)
4
1.85 (0.0728)
L
2.30 (0.0906)
5
1.90 (0.0748)
M
2.35 (0.0925)
6
1.93 (0.0760)
N
2.40 (0.0945)
7
1.96 (0.0772)
P
2.45 (0.0965)
A
1.99 (0.0783)
Q
2.50 (0.0984)
B
2.02 (0.0795)
R
2.55 (0.1004)
C
2.05 (0.0807)
S
2.60 (0.1024)
D
2.08 (0.0819)
U
2.65 (0.1043)
E
2.11 (0.0831)
W
2.70(0.1063)
F
2.14 (0.0843)
–
–
30. Using the vernier calipers, measure the free length
of the 1st & reverse brake piston return spring together with spring seat.
S
Standard free length: 18.053 mm (0.71075 in.)
31. Check to see if the sliding surface of the disc, plate
and flange of 1st & reverse brake are worn or burnt.
If necessary, replace them.
Notice : If the lining of the disc is peeling off or discolored,
or even if a part of the groove is defaced, replace all discs.
Notice : Before assembling new discs, soak them in ATF
for at least 15 minutes.
DAEWOO V–121 BL4
5A2 – 144IAISIN AUTOMATIC TRANSAXLE
32. Coat 2 new O–rings with ATF, install them to the
1st & reverse piston.
33. Install the 1st & reverse brake piston to the transaxle case.
Notice : Be careful not to damage the O–rings of the 1st
& reverse brake piston.
34. Install the return spring to the transaxle case.
35. Install the 4 plates, 4 discs and flange.
S Install in order : P D P D P D P D F
(P= Plate, D= Disc, F= Flange)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 145
36. Using 1st & reverse brake adapter DW240–070 and
brake spring compressor bolt/nut DW240–060–01,
install the snap ring.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
37. Using a dial indicator, measure the 1st & reverse
brake piston stroke while applying and releasing
392–785 kPa (57–114 psi) of compressed air.
Notice : If the piston stroke is non–standard, inspect the
discs, plates and flange. Piston stroke 0.6 1.3 mm (0.024
0.051 in.)
38. Using counter drive gear installation adapter
DW240–100, brake spring compressor bolt/nut
DW240–060–01 and brake spring compressor plate
DW240–060–02, install the counter drive gear.
Notice : Be careful not to apply excessive force to the
transaxle case.
39. Coat a new oil seal with ATF.
40. Install the oil seal to the transaxle case.
S
Oil seal in depth:
A: 1 ± 0.25 mm (0.39 ± 0.0098 in.)
DAEWOO V–121 BL4
5A2 – 146IAISIN AUTOMATIC TRANSAXLE
41. Install the parking lock rod to the manual valve lever.
42. Install a new spacer to the manual valve lever.
43. Install the manual valve lever shaft and manual
valve lever.
44. Using a pin punch and hammer, drive in a new pin.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 147
45. Turn the spacer and lever shaft to align the small
hole for locating the staking position in the spacer
with the staking position mark on the lever shaft.
46. Using a pin punch, stake the spacer through the
small hole.
47. Check that the spacer does not turn.
48. Install the manual detent spring with the bolt.
Tighten
Tighten the bolts to 9.8 NSm (87 lb–in).
49. Install the parking lock shaft, torsion spring and
parking lock pawl.
Notice : Check that the edge of torsion spring fits into the
groove securely.
DAEWOO V–121 BL4
5A2 – 148IAISIN AUTOMATIC TRANSAXLE
50. Install the parking lock pawl bracket with the 2
bolts.
Tighten
Tighten the bolts to 7.4 NSm (65 lb–in).
51. Using counter drive gear installation adapter
DW240–100 and brake spring compressor bolt/nut
DW240–060–01,install the planetary ring gear.
S
Before installing the planetary ring gear, be sure
to replace the planetary ring flange of the planetary ring gear with a new one.
52. Fix the counter drive gear with parking lock pawl.
53. Using planetary ring gear nut removal/installation
socket DW260–041, install a new nut.
Tighten
Tighten the nut to 9.8 NSm (87 lb–in).
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 149
54. Using a small torque wrench, while turning to counter drive gear 100 turn per minute and measure the
preload.
Notice : When the preload is smaller than the specification, tighten the nut more and adjust the preload. Preload:
0.05–0.35 NSm (0.43–3.12 lb–in)
Tighten
Tighten the nut to 29 NSm (22 lb–ft) or less.
55. Stake the nut.
56. Install the planetary gear to the transaxle case.
57. Coat the planetary carrier thrust washer with petroleum jelly and install it onto the planetary gear.
58. Install the No.2 one–way clutch to the transaxle
case.
DAEWOO V–121 BL4
5A2 – 150IAISIN AUTOMATIC TRANSAXLE
59. Check that the planetary gear turns freely counterclockwise and locks clockwise.
60. Install the anti–rattle clip in the place shown in the
illustration (the space between the No.2 one–way
clutch outer race and transaxle case), push the
anti–rattle clip in until you hear the ”click”.
61. Using vernier calipers, measure the free length of
the 2nd brake piston return spring together with
spring seat.
S
Standard free length: 15.85 mm (0.6240 in.).
62. Check to see if the sliding surface of the disc, plate
and flange of 2nd brake are worn or burnt. If necessary, replace them.
Notice : If the lining of the disc is peeling off or discolored,
or even if a part of the groove is defaced, replace all discs.
Notice : Before assembling new discs, soak them in ATF
for at least 15 minutes.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 151
63. Install the flange, 2 discs and 2 plates.
S Install in order : F D P D P
(D = Disc, P = Plate, F = Flange)
64. Install the 2nd brake return spring.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
65. Coat 2 new O–rings with ATF, install them to the
2nd brake piston.
66. Install the 2nd brake piston into the 2nd brake
clutch cylinder.
Notice : Be careful not to damage the O–rings.
67. Install the 2nd brake clutch cylinder to the transaxle
case.
DAEWOO V–121 BL4
5A2 – 152IAISIN AUTOMATIC TRANSAXLE
68. Using brake spring compressor bolt / nut
DW240–060–01 and 2nd brake adapter
DW240–080, compress the 2nd brake piston return
spring.
69. Using a screwdriver, install the snap ring.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
70. Coat the thrust bearing race with petroleum jelly
and install it onto the front planetary sun gear.
S
Race:
Inner diameter: 19.3 mm (0.760 in.)
Outer diameter : 29.0 mm (1.142 in.)
71. Install the front planetary sun gear to the transaxle
case.
72. Install the thrust washer and one–way clutch assembly to the rear planetary sun gear.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 153
73. Coat the thrust bearing race with petroleum jelly
and install it onto the rear planetary sun gear and
one–way clutch assembly.
S
Bearig:
Inner diameter: 42.5 mm (1.673 in.)
Outer diameter: 57.5 mm (2.264 in.)
Notice : Check the direction of the bearing.
74. Install the rear planetary sun gear and one–way
clutch assembly to the transaxle case.
75. Coat the thrust bearing race with petroleum jelly
and install it onto the transaxle case.
S
Race:
Inner diameter: 34.95 mm (1.3760 in.)
Outer diameter: 45.50 mm (1.7913 in.)
Notice : Check the direction of race.
76. Coat the thrust needle roller bearing with petroleum
jelly and install it onto the forward clutch hub.
S
Bearig:
Inner diameter: 33.3 mm (1.311 in.)
Outer diameter: 46.5 mm (1.831 in.)
Notice : Check the direction of bearing.
DAEWOO V–121 BL4
5A2 – 154IAISIN AUTOMATIC TRANSAXLE
77. Install the forward clutch hub to the transaxle case.
78. Coat the thrust bearing race with petroleum jelly
and install it onto the forward clutch hub.
S
Race:
Inner diameter: 19.3 mm (1.760 in.)
Outer diameter: 30.6 mm (1.205 in.)
79. Install the thrust bearing race and thrust needle roller bearing to the forward & reverse clutch assembly.
S
Race and bearing diameter: mm(in.)
Inner diameter
Outer diameter
Race
18.1 (0.713)
28.2 (1.110)
Bearing
18.1 (0.713)
29.6 (1.165)
80. Install the forward & reverse clutch assembly to the
transaxle case.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 155
81. Check to see if the sliding surface of the disc, plate
and flange of 2nd coast & O/D brake are worn or
burnt. If necessary, replace them.
Notice : If the lining of the disc is peeling off or discolored,
or even if a part of the printed mark is defaced, replace all
discs.
Notice : Before assembly new discs, soak them in ATF for
at least 15 minutes.
82. Using a screwdriver, install the snap ring to the
transaxle case.
Notice : Make sure that the snap ring is installed in the
groove of the transaxle case correctly.
83. Install the flange, 2 discs and 2 plates to the transaxle case.
S
Install in order: P D P D F
(P = Plate, D = Disc, F = Flange)
84. Clean the connected part the transaxle case and
transaxle rear cover.
85. As shown in the illustration, place a straight edge
on the transaxle case and measure the distance
between the 2nd coast & O/D brake flange and
straight edge using vernier calipers. (Dimension A).
DAEWOO V–121 BL4
5A2 – 156IAISIN AUTOMATIC TRANSAXLE
86. As shown in the illustration, place a straight edge
on the O/D brake piston and measure the distance
between the transaxle rear cover and straight edge
using vernier calipers. (Dimension B).
87. Calculate the piston stroke value using the following
formula. Select a flange which satisfies the piston
stroke value and install it.
Piston stroke = Dimension A Dimension B
Piston stroke : 0.65 1.05 mm (0.0256 0.0413
in.)
S Flange thickness : mm (in.)
Piston stroke
value
Thickness
Mark
0.738 ~ 0.949
(0.02905 ~
0.03736)
3.0
(0.118)
0
0.950 ~ 1.149
(0.03740 ~
0.04524)
3.2
(0.126)
1
1.150 ~ 1.349
(0.04528 ~
0.05311)
3.4
(0.134)
2
1.350 ~ 1.549
(0.05315 ~
0.06098)
3.6
(0.142)
3
1.550 ~ 1.702
(0.06102 ~
0.06701)
3.8
(0.150)
0
88. Install new 4 apply gaskets to the transaxle rear
cover.
89. Coat the thrust neddle roller bearing with petroleum
jelly and install it onto the forward & reverse clutch
assembly.
S
Bearig:
Inner diameter: 43.2 mm (1.701 in.)
Outer diameter: 62.0 mm (2.441 in.)
90. Remove any packing material and be careful not to
get oil on the contacting surfaces of the transaxle
rear cover or transaxle case.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 157
91. Apply formed in place gasket (FIPG) to the transaxle rear cover.
FIPG: three bond 1281 or equivalent
Seal bend width: 1.2 mm (0.047 in.)
92. Install the transaxle rear cover to the transaxle case
with the 9 bolts.
Tighten
Tighten the bolts to 25 NSm (18 lb–ft).
93. Install the counter driven gear assembly to the
transaxle case.
94. Install the differential gear assembly to the transaxle case.
DAEWOO V–121 BL4
5A2 – 158IAISIN AUTOMATIC TRANSAXLE
95. Install the direct clutch hub to the transaxle case.
96. Install the thrust bearing race and thrust needle roller bearing to the transaxle case.
S
Race and bearing: mm (in.)
Inner diameter
Outer diameter
Race
20.5 (0.807)
32.6 (1.283)
Bearing
17.8 (0.701)
30.2 (1.189)
97. Install the direct clutch assembly to the transaxle
case.
98. Install new apply gasket.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 159
99. Install the thrust needle roller bearing to the transaxle case.
Notice : Check the direction of the bearing.
100.
Place the oil pump through the input shaft, and
align the bolt holes of the oil pump with the transaxle case.
101.
Install the 6 oil pump bolts.
Tighten
Tighten the bolts to 25 NSm (18 lb–ft).
102.
Measure the end play in axial direction.
Notice : If the end play is not as specified, select and replace the thrust needle roller bearing.
End play 0.3 0.9 mm (0.012 0.035 in.)
Bearing: mm (in.)
S
S
Inner diameter
Outer
diameter
Thichness
32.5 (1.280)
48.5 (1.909)
4.21 (0.1657)
32.9 (1.295)
48.5 (1.909)
3.62 (0.1425)
103.
Make sure that the input shaft rotates smoothly.
DAEWOO V–121 BL4
5A2 – 160IAISIN AUTOMATIC TRANSAXLE
104.
Remove any packing material and be careful
not to get oil on the contacting surfaces of the
transaxle housing or transaxle case.
105.
Apply FIPG (formed in place gasket) to the
transaxle housing.
FIPG: Three bond 1281 or equivalent.
Seal bend width: 1.2 mm (0.047 in.)
106.
Install the transaxle housing to the transaxle
case with the 16 bolts.
Tighten
Tighten the bolts to 29 NSm (22 lb–ft).
S
Apply seal packing or equivalent to the 3 bolts
indicated by arrows.
107.
Coat a new O–ring with ATF, install it to the
transaxle wire.
108.
Install the transaxle wire the to the transaxle
case with the bolt.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 161
109.
Coat new 6 O–rings with ATF and install them
to the pistons.
110.
Coat the 3 springs and 3 accumulator pistons
with ATF, install them to the holes.
S Accumulator spring:
Spring
Free length
Outer
diameter
mm(in.)
B1(O/D & 2nd 47.13(1.8555)/
brake)
16.0(0.630)
Pink
C1(Forward
clutch)
57.90(2.2795)/
17.2(0.677)
–
C2(Direct
clutch)
57.20(2.2520)/
17.5(0.689)
Green
111.
Coat a new apply gasket with ATF, install it to
the transaxle case.
112.
Coat a new brake drum gasket with ATF, install
it to the transaxle case.
113.
DAEWOO V–121 BL4
Color
Install the spring and check valve.
5A2 – 162IAISIN AUTOMATIC TRANSAXLE
114.
Connect the manual valve control rod to the
manual valve lever as shown in the illustration.
115.
Install the valve body assembly to the transaxle case.
Tighten
Tighten the bolts to 11 NSm (97 lb–in).
Notice : When installing the valve body to the transaxle
case, do not let each of accumulator pistons B1,C1,and
C2 incline. When installing the valve body to the transaxle
case, do not hold the solenoids.
116.
Connect the transaxle wire connector and harness to the valve body assembly.
117.
Connect the 5 connectors.
a. Lock–up control solenoid
b. Pressure control solenoid.
c. No.2 shift solenoid.
d. No.1 shift solenoid.
e. Timing solenoid
118.
Install the TFT sensor with clamp.
Notice : Make sure that the transaxle wire does not come
out from the oil pan installation surface.
119.
Install a new gasket to the oil strainer.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 163
120.
Install the oil strainer to the valve body with the
3 bolts.
Tighten
Tighten the bolts to 9.8 NSm (87 lb–in).
121.
122.
Install the 2 magnets in the oil pan.
Install a new gasket to the oil pan and install
them to the transaxle case with the 18 bolts.
Tighten
Tighten the bolts to 7 NSm (62 lb–in).
123.
Install the output shaft speed (OSS) sensor.
Tighten
Tighten the bolt to 7.4 NSm (65 lb–in).
DAEWOO V–121 BL4
5A2 – 164IAISIN AUTOMATIC TRANSAXLE
124.
125.
Install the No.1 breather plug.
Install the input shaft speed (ISS) sensor with
the bolt.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).
126.
Coat a new O–ring with ATF, install it to the
screw plug.
127.
Install the screw plug to the transaxle case.
Tighten
Tighten the bolts to 7.4 NSm (65 lb–in).
128.
Coat new 2 O–rings with ATF, install them to
the unions.
129.
Install the 2 unions to the transaxle case.
Tighten
Tighten the unions to 25 NSm (18 lb–ft).
130.
Install the TR switch onto the manual valve
lever shaft and temporarily install the 2 adjusting
bolts.
131.
Install a new lock washer and nuts.
Tighten
Tighten the nuts to 12 NSm (106 lb–in).
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 165
132.
Temporarily install the control lever.
133.
Turn the lever counterclockwise until it stops,
then turn it clockwise 2 notches.
134.
Remove the control lever.
135.
136.
Align the groove with neutral basic line.
Tighten the 2 bolts.
Tighten
Tighten the bolts to 5.4 NSm (48 lb–in).
137.
DAEWOO V–121 BL4
Using a screwdriver, stake the nut with the lock
washer.
5A2 – 166IAISIN AUTOMATIC TRANSAXLE
138.
Install the control lever, washer and nut.
Tighten
Tighten the nut to 12 NSm (106 lb–in).
139.
140.
Install the torque converter to the transaxle.
Measure the installation depth of the torque
converter. Standard value: 11.1 mm
If the measured value is beyond the standard
value, readjust the torque converter within the
specified value.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 167
OIL PUMP
1.
2.
3.
Oil Pump Body
Oil Pump Drive Gear
Oil Pump Driven Gear
DAEWOO V–121 BL4
4.
5.
Stator Shaft
Bolt
5A2 – 168IAISIN AUTOMATIC TRANSAXLE
Disassembly Procedure
1.
Turn the drive gear with 2 screwdrivers and make
sure it rotates smoothly.
Notice : Be careful not to damage the oil lip.
2. Remove the 8 bolts and stator shaft.
Notice : Be careful not to let the driver drop as it might
come off attached to the stator shaft.
3.
Remove the oil pump drive gear and driven gear
from the oil pump body.
Inspection Procedure
1.
Push the driven gear to one of side of the body.
Using a feeler gauge, measure the clearance.
S
Standard body clearance:
0.10 0.17 mm (0.0039 0.0067 in.)
S
Maximum body clearance: 0.17 mm (0.0067 in.)
If the body clearance is greater than the maximum, replace the oil pump body sub–assembly.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 169
2.
Measure the tip clearance between the driven gear
teeth and drive gear teeth.
S
Standard tip clearance:
0.07 0.15 mm (0.0028 0.0059 in.)
S
Maximum tip clearance: 0.15 mm (0.0059 in.)
If the tip clearance is greater than the maximum,
replace the oil pump body sub–assembly.
3.
Using a steel straight edge and feeler gauge, measure the side clearance of both gears.
S
Standard side clearance:
0.02 0.05 mm (0.0008 0.0020 in.)
S
Maximum side clearance: 0.05 mm (0.0020 in.)
If the side clearance is greater than the maximum, replace the drive gear, driven gear or
pump body.
4.
Using a dial indicator, measure the inside diameter
of the oil pump body bushing.
S
S
Standard inside diameter: 38.126 mm (1.50102
in.)
Maximum inside diameter: 38.188 mm (1.50346
in.)
If the inside diameter is greater than the maximum, replace the oil pump body sub–assembly.
5.
Using a dial indicator, measure the inside diameter
of the stator shaft bushings.
S
S
Standard inside diameter: 18.437 mm (0.72586
in.)
Maximum inside diameter: 18.5 mm (0.728 in.)
If the inside diameter is greater than the maximum, replace the stator shaft.
DAEWOO V–121 BL4
5A2 – 170IAISIN AUTOMATIC TRANSAXLE
Assembly Procedure
1.
Install the oil pump drive gear and driven gear.
2.
3.
Align the stator shaft with each bolt hole.
Install the 8 bolts.
Tighten
Tighten the bolts to 9.8 NSm (87 lb–in).
4.
Turn the drive gear with 2 screwdrivers and make
sure it rotates smoothly.
Notice : Be careful not to damage the oil lip.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 171
DIRECT CLUTCH
1.
2.
3.
4.
5.
6.
Seal Ring
Input Shaft Sub–assembly
O–Ring
Piston
O–Ring
Return Spring
DAEWOO V–121 BL4
7.
8.
9.
10.
11.
Snap Ring
Plate
Disc
Flange
Snap Ring
5A2 – 172IAISIN AUTOMATIC TRANSAXLE
Tools Required
DW240–020 Brake/Clutch Spring Compressor
DW240–040 Direct Clutch Adapter
Disassembly Procedure
WARNING : USE CAUTION WHEN CHECKING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
1. Install the direct clutch and thrust needle roller
bearing on the oil pump.
2. Using a dial indicator, measure the direct clutch
piston stroke while applying and releasing 392 kPa
(57 psi).of compressed air.
Piston stroke: 0.4 0.8 mm (0.016 0.031 in.)
If the stroke is non–standard, inspect the discs,
plates and flange.
3.
Using a screwdriver, remove the snap ring.
4.
Remove the flange, 2discs and 2 plates.
5.
Place the brake/clutch spring compressor
DW240–020 and direct clutch adapter DW240–040
on the direct clutch return spring and compress.
6. Using a snap ring expander, remove the snap ring.
Notice : Stop the press when the piston return spring is
lowered to the place 1–2 mm (0.039–0.078 in.) from the
snap ring groove, preventing the piston return spring from
being deformed.
Notice : Do not expand the snap ring excessively.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 173
7.
Remove the direct clutch return spring.
8. Install the direct clutch on the oil pump.
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
Notice : Blowing off the air may cause the piston’jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
9. Apply 392 kPa (57 psi) of compressed air to the oil
pump to remove the direct clutch piston.
S
When the piston can not be removed as it is
slanted, either blow the air again with the protruding side pushed or remove the piston using
needle nose pliers with vinyl tape on the tip.
10. Using a small screwdriver, remove the O–ring from
the direct clutch piston.
11. Remove the O–ring from the input shaft.
DAEWOO V–121 BL4
5A2 – 174IAISIN AUTOMATIC TRANSAXLE
12. Remove the 2 seal rings from the input shaft.
Notice : Do not expand the ring ends excessively.
Inspection Procedure
1.
Check to see if the sliding surface of the disc, plate
and flange are worm or burnt. If necessary, replace
them.
S If the lining of the disc is peeling off or discolored, or even if a part of the printed number is
defaced, replace all discs.
S Before assembling new discs, soak them in ATF
for at least 15 minutes.
2.
Using vernier calipers, measure the free length of
the direct clutch return spring together with the
spring sheet.
S
3.
4.
Standard free length: 36.04 mm (1.4189 in.)
Check that the check ball is free by shaking the direct clutch piston.
Check that the valve does not leak by applying low–
pressure compressed air.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 175
Assembly Procedure
1. Install the 2 seal rings to the input shaft.
Notice : Do not expand the ring ends excessively.
2.
Coat a new O–ring with ATF and install the O–ring
to the input shaft.
3.
Coat a new O–ring with ATF and install the O–ring
to the direct clutch piston.
4.
Coat the direct clutch piston with ATF, install it to
the direct clutch drum.
Notice : Be careful not to damage the lip seal of direct
clutch piston.
DAEWOO V–121 BL4
5A2 – 176IAISIN AUTOMATIC TRANSAXLE
5.
Install the direct clutch return spring.
6.
Place brake/clutch spring compressor DW240–020
and direct clutch adapter DW240–040 on the return
spring and compress.
7. Using a snap ring expander, install the snap ring.
Notice : Stop the press when the piston return spring is
lowered to the place 1–2 mm (0.039–0.078 in.) from the
snap ring groove, preventing the piston return spring from
being deformed.
Notice : Do not expand the snap ring excessively.
8.
Install the 2 plates, 2 discs and flange.
S Before installing the discs, coat them with
ATF.Install in order: P D P D – F
(P = Plate, D = Disc, F = Flange)
9. Using a screwdriver, remove the snap ring.
10. Check that end gap of the snap ring is not aligned
with one of the cutouts.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 177
11. Install the direct clutch on the oil pump.
WARNING : USE CAUTION WHEN CHECKING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
12. Using a dial indicator, measure the direct clutch
piston stroke while applying and releasing 392 kPa
(57 psi) .of compressed air .
Piston stroke: 0.4 0.8 mm (0.016 0.031 in.)
S If the piston stroke is less than the limit of piston
stroke, parts may have been assembled incorrectly, so check and reassemble again.
S If the stroke is non–standard, select another
flange.
S There are 3 flanges in different thickness.
S Flange Thickness: mm (in.)
DAEWOO V–121 BL4
No
Thickness
No
Thickness
1
3.0 (0.118)
3
3.4 (0.134)
2
3.2 (0.126)
5A2 – 178IAISIN AUTOMATIC TRANSAXLE
PLANETARY RING GEAR
1.
2.
Snap Ring
Planetary Ring Gear Flange
3.
Planetary Ring Gear
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 179
Disassembly Procedure
1.
Using a screwdriver, remove the snap ring.
2.
Remove the planetary ring gear flange from the
planetary ring gear.
Assembly Procedure
DAEWOO V–121 BL4
1.
Install a new planetary ring gear flange to the planetary ring gear.
2.
Using a screwdriver, install the snap ring.
5A2 – 180IAISIN AUTOMATIC TRANSAXLE
ONE–WAY CLUTCH
1.
2.
Snap Ring
One–Way Clutch
3.
4.
2nd Brake Hub
Retainer
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 181
Disassembly Procedure
1.
2.
DAEWOO V–121 BL4
Install the one–way clutch and thrust washer to the
rear planetary sun gear.
Hold the rear planetary sun gear and turn the one–
way clutch. The one–way clutch should turn freely
clockwise and should lock counterclockwise.
3.
Using a screwdriver, remove the snap ring from the
2nd brake hub.
4.
Remove the one–way clutch from the 2nd brake
hub.
5.
Using a small screwdriver, remove the retainer from
the 2nd brake hub.
5A2 – 182IAISIN AUTOMATIC TRANSAXLE
Assembly Procedure
1.
2.
Install the retainer to the 2nd brake hub.
Install the one–way clutch.
3.
Using a screwdriver, install the snap ring.
4.
Install the one–way clutch and thrust washer to the
rear planetary sun gear.
Hold the rear planetary sun gear and turn the one–
way clutch. The one–way clutch should turn freely
clockwise and should lock counterclockwise.
5.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 183
FORWARD AND REVERSE CLUTCH
1.
2.
3.
4.
5.
6.
7.
8.
9.
Seal Ring
Flange
Disc
Plate
Flange
Snap Ring
Flange
Disc
Plate
DAEWOO V–121 BL4
10.
11.
12.
13.
14.
15.
16.
17.
Snap Ring
Clutch Balancer
Forward Clutch Retrun Spring
Forward Clutch Piston
O–Ring
Forward Clutch Drum
O–Ring
Intermediate Shaft Sub–assembly
5A2 – 184IAISIN AUTOMATIC TRANSAXLE
Tools Required
DW240–020 Brake/Clutch Spring Compressor
DW240–030 Forward Clutch Adapter
DW240–120 Measuring Terminal
Disassembly Procedure
WARNING : USE CAUTION WHEN CHECKING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
1. Install the forward and reverse clutch and thrust
needle roller bearing on the transaxle rear cover.
2. Using a dial indicator, measure the reverse clutch
pack clearance while applying and releasing 392
kPa (57 psi) of compressed air.
S Pack clearance: 0.40 1.00 mm (0.0157 0.0394 in.)
S If the stroke is non–standard, inspect the discs,
plates and flange.
WARNING : USE CAUTION WHEN CHECKING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
3. Install the forward and reverse clutch and thrust
needle roller bearing on the transaxle rear cover.
4. Using a dial indicator and measuring terminal
DW240–120, measure the forward clutch pack
clearance while applying and releasing 392 kPa (57
psi). of compressed air.
S The forward and reverse clutch will come out as
you apply the compressed air. Therefore, while
the checking is being done, press on the input
shaft of the forward and reverse clutch using
stamping machine or alike so that the pressure
is not applied on the forward and reverse clutch.
S
5.
Pack clearance: 1.1–1.5 mm (0.043 0.059 in.)
If the stroke is non–standard, inspect the discs,
plates and flange.
Using a screwdriver, remove the reverse clutch
snap ring.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 185
6.
Remove the 2 flanges, 2 discs and plate from the
reverse clutch drum.
7.
Using a screwdriver, remove the snap ring.
8.
Remove the flange, 3 discs and 3 plates from the
forward clutch drum.
9.
Using brake/clutch spring compressor DW240–020
and forward clutch adapter DW240–030, compress
the spring.
10. Using a snap ring expander, remove the snap ring.
Notice : Stop the press when the clutch balancer is lowered to the place 1–2 mm (0.039–0.078 in.) from the snap
ring groove, preventing the clutch balancer from being deformed.
Notice : Do not expand the snap ring excessively.
DAEWOO V–121 BL4
5A2 – 186IAISIN AUTOMATIC TRANSAXLE
11. Remove the clutch balancer and forward clutch return spring.
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
12. Install the forward and reverse multiple disc clutch
on the transaxle rear cover.
13. Apply 392 kPa (57 psi) of compressed air to the
transaxle rear cover to remove the forward clutch
piston.
Notice : Blowing off the air may cause the piston’s jump–
out.When removing the piston, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
S When the piston can not be removed as it is
slanted, either blow the air again with the protruding side pushed or remove the piston using
a needle nose pliers with vinyl tape on the tip.
WARNING : USE CAUTION WHEN REMOVING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
14. Apply 392 kPa (57 psi) of compressed air to the
transaxle rear cover to remove the forward clutch
drum.
Notice : Blowing off the air may cause the drum’s jump–
out. When removing the drum, hold it with your hand using
a waste cloth.
Notice : Take care not to splash ATF when air–blowing.
S
When the drum can not be removed as it is
slanted, either blow the air again with the protruding side pushed or remove the drum using a
needle nose pliers with vinyl tape on the tip.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 187
15. Using a small screwdriver, remove the O–ring from
the forward clutch drum.
16. Using a small screwdriver, remove the O–ring from
the intermediate shaft sub–assembly.
Inspection Procedure
1.
Check to see if the sliding surface of the disc, plate
flange are worn or burnt. If necessary, replace
them.
S If the lining of the disc is peeling off or discolored, or even if a part of the printed number is
defaced, replace all discs.
S Before assembling new discs, soak them in ATF
for at least 15 minutes.
2.
Using vernier calipers, measure the free length of
the spring together with the spring seat.
S
DAEWOO V–121 BL4
Standard free length: 24.04 mm (0.9465 in.)
5A2 – 188IAISIN AUTOMATIC TRANSAXLE
Assembly Procedure
1.
Coat a new O–ring with ATF, and install it to the
intermediate shaft sub–assembly.
2.
Coat a new O–ring with ATF, and install it to the
forward clutch drum.
3.
Coat the forward clutch drum with ATF, install the
forward clutch drum.
Notice : Be careful not to damage the O–ring and lip seal
of forward clutch drum.
4.
Coat the forward clutch piston with ATF, install the
forward clutch piston.
Notice : Be careful not to damage the lip seal of forward
clutch piston.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 189
5.
Install the forward clutch return spring and clutch
balancer.
Notice : Be careful not to damage the lip seal of forward
clutch return spring.
6.
Place brake/clutch spring compressor DW240–020
and forward clutch adapter DW240–030 on the
clutch balancer and compress the piston return
spring.
7. Using a snap ring expander, install the snap ring.
Notice : Stop the press when the clutch balancer is lowered to the place 1–2 mm (0.039–0.078 in.) from the snap
ring groove, preventing the clutch balancer from being deformed.
Notice : Do not expand the snap ring excessively.
8.
Install the 3 plates, 3 discs and flange.
S Install in order: P D P D P D – F
(P = Plate, D = Disc, F = Flange)
9. Using a screwdriver, install the snap ring.
10. Check that the end gap of the snap ring is not
aligned with one of the cutouts.
DAEWOO V–121 BL4
5A2 – 190IAISIN AUTOMATIC TRANSAXLE
11. Install the plate, 2 discs and 2 flanges.
S Install in order: F D P D – F
(P = Plate, D = Disc, F = Flange)
12. Using a screwdriver, install the snap ring.
13. Check that the end gap of the snap ring is not
aligned with one of the cutouts.
WARNING : USE CAUTION WHEN CHECKING COMPONENTS WITH COMPRESSED AIR OR PERSONAL
INJURY MAY RESULT.
14. Install the forward and reverse clutch and thrust
needle roller bearing on the transaxle rear cover.
15. Using a dial indicator, measure the reverse clutch
pack clearance while applying and releasing 392
kPa (57 psi) of compressed air.
S Pack clearance: 0.40 1.00 mm (0.0157 0.0394 in.) If the pack clearance is less than the
limit of pack clearance, parts may have been
assembled incorrectly, so check and reassemble
again.
If the pack clearance is non–standard, select
another flange.
There are 4 flanges in different thickness.
S Flange Thickness: mm (in.)
No
Thickness
No
Thickness
1
3.0 (0.118)
3
3.4 (0.134)
2
3.2 (0.126)
4
3.6 (0.142)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 191
16. Install the forward and reverse clutch and thrust
needle roller bearing on the transaxle rear cover.
17. Using a dial indicator and measuring terminal
DW240–120, measure the forward clutch pack
clearance while applying and releasing 392 kpa (57
psi) of compressed air.
S The forward and reverse clutch will come out as
you apply the compressed air. Therefore, while
the checking is being done, press on the input
shaft of the forward and reverse clutch using
stamping machine or alike so that the pressure
is not applied on the forward and reverse clutch.
S Pack clearance: 1.1–1.5 mm (0.043 0.059 in.)
If the pack clearance is less than the limit of
pack clearance, parts may have been assembled incorrectly, so check and reassemble
again.
If the pack clearance is non–standard, select
another flange.
There are 4 flanges in different thickness.
S Flange Thickness: mm (in.)
DAEWOO V–121 BL4
No
Thickness
No
Thickness
1
3.0 (0.118)
3
3.4 (0.134)
2
3.2 (0.126)
4
3.6 (0.142)
5A2 – 192IAISIN AUTOMATIC TRANSAXLE
COUNTER DRIVEN GEAR
1.
2.
3.
Outer Tapered Roller Bearing Race
Tapered Roller Bearing
Counter Drive Pinion
4.
5.
6.
Counter Driven Gear
Tapered Roller Bearing
Outer Tapered Roller Bearing Race
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 193
Tools Required
DW240–160 Transaxle Case Outer Tapered Roller Bearing Race Adapter
DW240–170 Adapter Handle
Disassembly Procedure
1.
Using a suitable puller, remove the tapered roller
bearing from the transaxle case side.
2.
Using a press, remove the counter driven gear.
3.
Using a suitable puller, remove the tapered roller
bearing.
Using a suitable puller, remove the outer tapered
roller bearing race and shim from the transaxle
case.
Using a suitable puller, remove the outer tapered
roller bearing race from the transaxle housing.
4.
5.
Assembly Procedure
1.
Install a new outer tapered roller bearing race into
the transaxle housing.
Notice : Press–fit the outer tapered roller bearing race until it contacts the transaxle housing.
DAEWOO V–121 BL4
5A2 – 194IAISIN AUTOMATIC TRANSAXLE
2.
Install the shim to the transaxle case.
S First install a shim of the same thickness as before.
3. Using transaxle case outer tapered roller bearing
race adapter DW240–160 and adapter handle
DW240–170, press in a new outer tapered roller
bearing race into the transaxle case.
Notice : Press–fit the shim until it contacts the transaxle
case.
4.
Using a press, install the counter driven gear.
5.
Using a press, install a new tapered roller bearing
of the transaxle case side.
6.
Using a press, install a new tapered roller bearing
of .the transaxle housing side.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 195
VALVE BODY
1.
2.
3.
4.
5.
6.
Manual Valve
Upper Valve Body
Valve Body Plate
No1. Solenoid Valve
O–Ring
No2. Solenoid Valve
DAEWOO V–121 BL4
7.
8.
9.
10.
11.
12.
O–Ring
Pressure Control Solenoid Valve
Lower Valve Body
Timing Solenoid Valve
O–Ring
Lock–up Solenoid Valve
5A2 – 196IAISIN AUTOMATIC TRANSAXLE
1.
2.
3.
4.
5.
Cover
Gasket
Cover Plate
Gasket
Pressure Relief Valve Spring Seat
6.
7.
8.
9.
10.
Spring
Ball
Check Ball
Spring
Check Valve
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 197
Disassembly Procedure
1.
Write down the relative position of the primary regulator valve sleeve, plug and pin.
Notice : Because the line pressure is changed by the position of the pin and groove in the sleeve end, be sure to
check the position.
2. Remove the manual valve.
DAEWOO V–121 BL4
3.
Remove the 5 bolts and 5 shift solenoid valves.
4.
Remove the 15 bolts.
5.
Remove the cover, 2 gaskets and plate.
5A2 – 198IAISIN AUTOMATIC TRANSAXLE
6.
7.
8.
Remove the spring, check valve and check ball.
Remove the bolt, spring seat, spring and ball.
Turn over the valve body.
9.
Remove the 2 bolts from the valve body.
10. Remove the upper valve body from the lower valve
body with plate.
11. Remove the valve body plate from the lower valve
body.
Notice : Be careful that the check balls do not fall out.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 199
Assembly Procedure
1.
Install the valve body plate to the lower valve body.
2.
Install the upper valve body to the lower valve body
with plate.
3.
Install the 2 bolts to the valve body.
Tighten
Tighten the bolts to 11 NSm (97 lb–in).
Bolt A: 49 mm (1.93 in.)
Bolt B: 36 mm (1.42 in.)
4.
Turn the valve body.
5.
6.
Install the check valve, spring and check ball.
Install the ball, spring, spring seat and bolt.
Tighten
Tighten the bolts to 6.5 NSm (57 lb–in).
DAEWOO V–121 BL4
5A2 – 200IAISIN AUTOMATIC TRANSAXLE
7.
Install the 2 gaskets, plate and lower valve body
cover.
8.
First, tighten the bolts indicated by arrows temporarily and then tighten the other bolts temporarily.
Tighten all the bolts completely.
9.
Tighten
Tighten the bolts to 11 NSm (97 lb–in).
S
Bolt length:
Bolt A: 49 mm (1.93 in.)
Bolt B: 20 mm (0.79 in.)
Bolt C: 60 mm (2.36 in.)
10. Install the 5 shift solenoid valves with the 6 bolts.
Tighten
Tighten the bolts to 11 NSm (97 lb–in).
S
Bolt length:
Bolt A: 49 mm (1.93 in.)
Bolt B: 20 mm (0.79 in.)
11. Install the manual valve.
12. Make sure that the primary regulator valve is positioned in the same place where it was removed.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 201
Upper Valve Body
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Sleeve
Key
Spring
Plunger
Lock–up Control Valve
Plug
Key
Secondary Regulator Valve
Spring
No.2 Check Valve
Key
Ball
No.1 Check Valve
Reverse Control Valve
Spring
Key
DAEWOO V–121 BL4
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
Plug
Spring
3–4 Shift Valve
Spring
O–ring
Reverse Clutch Accumulator Piston
O–ring
Plunger
3–4 Shift Timing Valve
Spring
O–ring
2nd Brake Accumulator Piston
O–ring
Spring
Upper Valve Body Cover
5A2 – 202IAISIN AUTOMATIC TRANSAXLE
Upper Valve Body Spring
S
During reassembly, please refer to the spring specifications below to help you do discriminate between the different springs.
Mark
Name (Color)
Free length/Outer diameter mm
(in.)
Total number of
coils
28.41 (1.1185) / 6.4 (0.252)
10.49
A
3–4 shift timing valve (Pink)
B
2nd brake accumulator piston,(None)
Inner
45.90 (1.8071) / 10.5 (0.413)
16.9
C
2nd brake accumulator piston,(White)
Outer
69.00 (2.7165) / 16.0 (0.630)
15.1
D
Reverse clutch accumulator piston
(None)
65.40(2.5748) / 17.0 (0.669)
13.7
E
3–4 shift valve (Red)
25.50 (1.0039) / 9.73 (0.3831)
7.75
F
Secondary regulator valve (White)
34.56 (1.3606) / 8.8 (0.346)
12.27
G
Reverse control valve (None)
25.58 (1.0071) / 8.64 (0.3402)
8.75
H
Lock up control valve (Yellow)
20.87 (0.8217) / 5.55 (0.2185)
11.15
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 203
Upper Valve Body Key
Mark
DAEWOO V–121 BL4
Retainer
Height/Width/Thickness mm (in.)
A
Check valve
11.5 (0.453) / 5.0 (0.197) / 3.2 (0.126)
B
Secondary regulator valve
16.0 (0.630) / 5.0 (0.197) / 3.2 (0.126)
C
Lock up control valve
16.0 (0.630) / 5.0 (0.197) / 3.2 (0.126)
D
Reverse control valve
11.5 (0.453) / 5.0 (0.197) / 3.2 (0.126)
5A2 – 204IAISIN AUTOMATIC TRANSAXLE
Upper Valve Body Check Ball
Check ball mm(in).
5.535 (0.21791)
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 205
Lower Valve Body
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Key
Spring
4–3 Shift Timing Valve
Key
Plug
2–3 Shift Valve
Spring
Key
Plug
1–2 Shift Valve
Spring
Key
Sleeve
Plunger
DAEWOO V–121 BL4
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
Spring
Primary Regulator Valve
Key
Sleeve
Plunger
Spring
Lock–up Relay Valve
Key
Spring
Solenoid Modulator Valve
Solenoid Oil Strainer
Lower Modulator Valve
Spring
Key
5A2 – 206IAISIN AUTOMATIC TRANSAXLE
Lower Valve Body Spring
Mark
Name (Color)
Free length/Outer diameter mm
(in.)
Total number of
coils
33.95 (1.3366) / 8.2 (0.323)
12.5
A
4–3 shift timing valve No.1 (None)
B
Low modulator valve (None)
30.43 (1.1980) / 7.75 (0.3051)
12.72
C
2–3 shift valve (Red)
25.50 (1.0039) / 9.73 (8.1694)
7.75
D
1–2 shift valve (Red)
25.50 (1.0039) / 9.73 (8.1694)
7.75
E
Primary regulator valve (None)
50.53 (1.9894) / 13.6 (0.535)
11.07
F
Lock up relay valve (Red)
23.42 (0.9221) / 5.86 (0.2307)
12.25
G
Solenoid modulator valve (Yellow)
32.13 (1.2650) / 8.0 (0.315)
15.75
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 207
Lower Valve Body Key
Mark
DAEWOO V–121 BL4
Retainer
Height/Width/Thickness mm (in.)
A
4–3 shift timing valve No.1
36.0 (1.417) / 5.0 (0.197) / 3.2 (0.126)
B
Low modulator valve
24.0 (0.945) / 5.0 (0.197) / 3.2 (0.126)
C
2–3 shift valve
10.0 (0.394) / 5.0 (0.197) / 3.2 (0.126)
D
1–2 shift valve
10.0 (0.394) / 5.0 (0.197) / 3.2 (0.126)
E
Primary regulator valve
9.8 (0.386) / 5.2 (0.205) / 3.2 (0.126)
F
Lock up relay valve
16.0 (0.630) / 5.0 (0.197) / 3.2 (0.126)
G
Solenoid modulator valve
24.0 (0.945) / 5.0 (0.197) / 3.2 (0.126)
5A2 – 208IAISIN AUTOMATIC TRANSAXLE
DIFFERENTIAL CASE
1.
2.
3.
4.
5.
6.
7.
8.
Differential Pinion Thrust Washer
Differential Pinion Gear
Differential Side Gear Thrust Washer
Differential Side Gear
Pin
Differential Pinion Shaft
Oil Seal
Side Bearing Outer Race
9.
10.
11.
12.
13.
14.
15.
Tapered Roller Bearing
Differential Case
Differential Ring Gear
Tapered Roller Bearing
Side Bearing Outer Race
Shim
Oil Seal
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 209
Tools Required
DW260–031–01 Transaxle Housing Oil Seal Installer
DW260–031–02 Transaxle Case Oil Seal Installer
DW240–150 Transaxle Case Side Bearing Outer Race
Adapter
DW240–140 Transaxle Housing Side Bearing Outer Race
Adapter
DW240–170 Adapter Handle
Disassembly Procedure
DAEWOO V–121 BL4
1.
Place the matchmarks on the ring gear and differential case.
2.
Remove the 8 bolts.
3.
Using a plastic hammer, tap on the ring gear to remove it from the case.
4.
Using a suitable puller, remove the tapered roller
bearing of transaxle housing side.
5A2 – 210IAISIN AUTOMATIC TRANSAXLE
5.
Using a suitable puller, remove the tapered roller
bearing of transaxle case side.
6.
Using a pin punch and hammer, drive out the pin
from the ring gear side.
7.
Remove the differential pinion shaft from the case.
8.
Remove the 2 differential pinion gears, 2 differential
side gears, 2 differential pinion thrust washers and
2 differential side gear thrust washers.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 211
9.
Using a driver, remove the oil seal from the transaxle housing.
Notice : Be careful not to damage the transaxle housing
when removing the oil seal using a driver.
10. Using a suitable puller, remove the side bearing
outer race of transaxle housing.
11. Using a driver, remove the oil seal of transaxle
case.
Notice : Be careful not to damage the transaxle case
when removing the oil seal using a driver.
12. Using transaxle case side bearing outer race adapter DW240–150 and adapter handle DW240–170,
remove the transaxle case side bearing outer race
and shim.
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5A2 – 212IAISIN AUTOMATIC TRANSAXLE
Assembly Procedure
1.
Using transaxle housing side bearing outer race
adapter DW240–140 and adapter handle
DW240–170, install a new side bearing outer race
into the transaxle housing.
2. Install the shim to the transaxle case.
Notice : First install a shim of the same thickness as before.
3. Install a new side bearing outer race into the transaxle case.
4.
5.
6.
7.
Coat the thrust washers, side gears, pinion gears
and pinion thrust washers with ATF.
Install the 2 differential side gear thrust washers to
2 differential side gears.
Install the 2 side gears with 2 thrust washers, 2 pinion gears and 2 pinion thrust washers into the differential case.
Coat the pinion shaft with ATF.
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AISIN AUTOMATIC TRANSAXLE 5A2 – 213
8.
Install the pinion shaft so as to align the lock pin
holes on the pinion shaft and differential case.
9.
Measure the side gear backlash while holding 1
pinion gear toward the case.
S Standard backlash:
0.05 0.20 mm (0.0020–0.0079 in.)
If the backlash is out of specification, install the
correct thrust washer to the side gear.
10. Referring to the table below, select thrust washers
which will ensure that the backlash is within the
specification.
Try to select washers of the same size for both
sides.
Thrust washer thickness : mm (in.)
Thickness
Thickness
0.95 (0.0374)
1.10 (0.0433)
1.00 (0.0394)
1.15 (0.0453)
1.05 (0.0413)
1.20 (0.0472)
If the backlash is not within the specification,
install a thrust washer of a different thickness.
11. Using a hammer and punch, drive in the pin
through the case and hole in the pinion shaft.
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5A2 – 214IAISIN AUTOMATIC TRANSAXLE
12. Using a hammer and chisel, stake the differential
case.
13. Using a press, install the tapered roller bearing into
the differential case.
14. Using a press, install the tapered roller bearing into
the differential case.
15. Remove any formed in place gasket (FIPG) material and be careful not to get oil on the contacting
surfaces of the transaxle housing or transaxle case.
16. Install the differential to the transaxle case.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 215
17. Install the transaxle housing and 16 bolts of the
transaxle housing temporarily.
18. Tighten 8 or 9 bolts out of 16 bolts of the transaxle
housing completely.
Tighten
Tighten the bolts to 29 NSm (22 lb–ft).
19. Using differential preload adapter DW240–130, turn
the differential gear assembly right and left 2 or 3
times to allow the bearing settle.
20. Using differential preload adapter DW240–130 and
small torque wrench, measure the preload of the
differential gear.
S Preload:
S
DAEWOO V–121 BL4
New bearing: 0.78–1.37 N.m (6.9–12.2 lb –in)
Used bearing : 0.39–0.69 N.m (3.5 6.1 lb–in)
If the preload is not within the specification, remove the differential from the transaxle case.
Re–select the transaxle case side adjusting
shim according to the following table.
Adjusting shim thickness :mm (in.)
Mark
Thickness
Mark
Thickness
A
1.80 (0.0709)
N
2.26 (0.0890)
B
1.85 (0.0728)
P
2.29 (0.0902)
C
1.90 (0.0748)
Q
2.32 (0.0913)
D
1.95 (0.0768)
R
2.35 (0.0925)
E
2.00 (0.0787)
S
2.40 (0.0945)
F
2.05 (0.0807)
T
2.45 (0.0965)
G
2.08 (0.0819)
U
2.50 (0.0984)
H
2.11 (0.0831)
V
2.55 (0.1004)
J
2.14 (0.0843)
W
2.60 (0.1024)
K
2.17 (0.0854)
X
2.65 (0.1043)
L
2.20 (0.0866)
Y
2.70 (0.01063)
M
2.23 (0.0878)
5A2 – 216IAISIN AUTOMATIC TRANSAXLE
21. Using a plastic hammer, remove the 16 bolts and
transaxle housing.
22. Remove the differential gear from the transaxle
case.
23.
24.
25.
26.
Clean the contact surface of the differential case.
Heat the ring gear in water and boil for 10 minutes.
Carefully remove the ring gear from the water.
After the moisture on the ring gear has completely
evaporated, quickly install the ring gear to the differential case.
27. Install the 8 bolts.
Tighten
Tighten the bolts to 102 NSm (75 lb–ft).
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 217
28. Using transaxle housing oil seal installer
DW260–031–01 and a hammer, drive in a new
transaxle housing oil seal .
S
Oil seal in depth : 3.1 mm (0.122 in.)
29. Using transaxle case oil seal installer
DW260–031–02, drive in a new transaxle case oil
seal.
S
DAEWOO V–121 BL4
Oil seal in depth : 4.3 mm (0.169 in.)
5A2 – 218IAISIN AUTOMATIC TRANSAXLE
GENERAL DESCRIPTION
AND SYSTEM OPERATION
TRANSAXLE DESCRIPTION
The new automatic transmission is an electronically controlled 4–speed automatic transmission with Lock–up
mechanism.
The transmission is mainly composed of the torque converter with lock up clutch, newly developed 4–speed planetary gear unit, the hydraulic control system and the electric control system.
ELECTRONICAL COMPONENTS
Transmission Control Module (TCM)
The TCM primarily controls shift points and lockup engagement. It is located on the driver side under the instrument panel.
The transmission is controlled by an electronic shift system. The Transmission Control Module (TCM) processes
input signals. From the information received, the TCM
controls the transmission hydraulic system.
The electronic shift system consists of the following :
S
S
S
S
S
S
S
S
Transmission control module (TCM)
Shift solenoids (SS1 and SS2)
Pressure control solenoid (PCS)
Lockup solenoid
Input shaft speed (ISS) sensor
Output shaft speed (OSS) sensor
Transmission Fluid Temperature (TFT) sensor
Transmission Range (TR) Switch
Shift Solenoid No 1,2 (SS1, SS2)
2 shift solenoids are installed directly in the valve body.
The solenoids operate of ON and OFF by the control signal from TCM. Combinations of 2 solenoids, SS1 and SS2
changes gear ranges.
Transmission Range (TR) Switch
Transmission Range (TR) Switch transmits the information which range includes shift lever of A/T to Starter and
TCM.
S
S
S
It is possible for TR switch to start an engine in only
”P” and ”N”. (Prevention of reckless driving)
TR switch makes backup lamp turn on when reversing.
It is used for TR switch to shift control.
TR switch transmits the information by combination of
starter and reverse circuit to vehicle side directly without
TCM.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 219
Timing Solenoid
Timing solenoid is installed directly in the valve body. The
solenoid operates of ON/OFF by the control signal from
TCM. The solenoid change timing valve of inside the valve
body, operate hydraulic control with apply and drain of forward clutch.
Transmission Fluid Temperature (TFT)
Sensor
TFT sensor provides TCM with information on the transmission fluid temperature.
The TCM uses information from the TFT sensor to calculate the gear shift points and to engage the torque converter lockup function.
Lock–Up Solenoid
Lock–up solenoid is installed in the valve body. It recieves
control signal from TCM.
Lock–up solenoid operates the lock–up valve inside the
valve body and controls the torque converter lockup function.
Input Shaft Speed (ISS) Sensor
ISS sensor is located on the upper position of the transaxle
and detects A/T input speed from the rotation number of
the direct clutch drum.
They transmit to TCM as a signal.
Pressure Control Solenoid (PCS)
The pressure control solenoid (PCS) is located inside the
valve body and regulates the transmission’s fluid pressure
system. It is internally grounded in the TCM and operates
when it is supplied with battery voltage from the TCM,
through the PCS and back to the TCM.
The battery voltage is controlled by a varying current from
the TCM.
The strength of the current is a function of the throttle position.
DAEWOO V–121 BL4
5A2 – 220IAISIN AUTOMATIC TRANSAXLE
Output Shaft Speed (ISS) Sensor
Shift Control
OSS sensor is located on the upper position of the transaxle and detects the vehicle speed from the rotation number of the differential gear.
When the ATF is below specification (15°C), 4th up–shift
is prevented.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 221
HYDRAULIC CONTROL SYSTEM
Based on the hydraulic pressure created by the oil pump, TCM sends signals to solenoid and hydraulic control system
governs the hydraulic pressure acting on the torque converter, planetary gear, clutches and brakes in accordance with
the vehicle driving conditions.
DAEWOO V–121 BL4
5A2 – 222IAISIN AUTOMATIC TRANSAXLE
AUTOMATIC TRANSAXLE SYSTEM
Function of Components
Component
Function
C1
Forward Clutch
C2
Direct Clutch
C3
Reverse Clutch
B1
O/D & 2nd Brake
Prevents rear planetary sun gear from turning either clockwise
or counterclockwise.
B2
2nd Brake
Prevents outer race of F1 from turning either clockwise or counterclockwise, thus preventing the rear sun gear turning conterclockwise.
B3
1st & Reverse Brake
Prevents planetary carrier from turning either clockwise or
counterclockwise.
F1
No.1 One–way Clutch
When B2 is operating, this clutch prevents rear sun gear from
counterclockwise.
F2
No.2 One–way Clutch
Prevents planetary carrier from turning counterclockwise.
Planetary Gear
Connects input shaft and front sun gear.
Connects input shaft and planetary carrier.
Connects input shaft and rear sun gear.
These gears change the route through which driving froce is
transmitted, in accordance with the operation of each clutch
and brake, in order to increase or reduce the input and output
speed.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 223
Operations of Clutches and Brakes
Clutch & Brake
DAEWOO V–121 BL4
Operation
C1
Forward Clutch
Connects intermediate shaft and front sun gear.
C2
Direct Clutch
C3
Reverse Clutch
B1
O/D & 2nd Brake
Lock rear sun gear
B2
2nd Brake
Lock rear sun gear
B3
1st & Reverse Brake
F1
1way Clutch No.1
Lock counterclockwise rotation of rear sun gear, when B2 operations
F2
1way Clutch No.2
Lock counterclockwise rotation of planetary carrier
Connects input shaft and Planetary carrier.
Connects intermediate shaft and rear sun gear.
Lock Planetary carrier
5A2 – 224IAISIN AUTOMATIC TRANSAXLE
Position
2
1
Brake
One–way
Clutch
Shift 2
Timing
C1
C2
C3
B1
B2
B3
F1
F2
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OF
–F
OF
–F
V<9
Km/
h
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
ON
OF
–F
OF
–F
Vw
9K
m/h
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OF
–F
OF
–F
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OF
–F
OF
–F
1st
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OF
–F
ON
2nd
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OF
–F
3rd
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OF
–F
OF
–F
(3´
4)
OFF
ON
ON´
OFF
ON´
OFF
ON
OFF
OFF´
ON
ON
OFF
OF
–F
OF
–F
4th
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OF
–F
OF
–F
1st
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OF
–F
ON
2nd
ON
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OF
–F
3rd
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OF
–F
OF
–F
1st
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
ON
OF
–F
ON
2nd
ON
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OF
–F
N
D
Clutch
Shift 1
P
R
Solenoid
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 225
D–1st Gear
Position
Solenoid
Clutch
Brake
Shift 1
Shift 2
Timing
C1
C2
C3
B1
B2
B3
F1
F2
D
1st
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OF
–F
ON
1
1st
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
ON
OF
–F
ON
”D” – 1st Gear
1. Input shaft rotates clockwise.
S Forward clutch (C1) operates. (Connect input shaft to front sun gear)
2.
3.
4.
5.
1 way
Clutch
Front sun gear rotates clockwise.
Planetary short pinion rotates itself counterclockwise.
Planetary long Pinion rotates itself clockwise.
Planetary carrier is going to rotate counterclockwise.
S One way clutch No.2(F2) operates. (Lock revolves counterclockwise of planetary carrier)
DAEWOO V–121 BL4
5A2 – 226IAISIN AUTOMATIC TRANSAXLE
6.
7.
8.
9.
10.
Ring gear rotates clockwise.
Counter drive gear rotates clockwise for ring gear and one.
Counter drive gear rotates counterclockwise
Differential gear drive pinion rotates counterclockwise for counter driven gear and one.
Differential gear rotates clockwise.
( Engine Brake)
1. Counter drive gear and Planetary ring gear rotates counterclockwise.
2. Planetary long pinion rotates itself counterclockwise.
3. Planetary short pinion rotates itself clockwise.
4. Planetary carrier revolves clockwise due to rotation itself counterclockwise of planetary long pinion, but driving
force loses due to free of 1 way clutch NO.2 (F2). Therefore Engine brake does not operate.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 227
D–2nd Gear
Position
Solenoid
Clutch
Brake
1 way
Clutch
Shift 1
Shift 2
Timing
C1
C2
C3
B1
B2
B3
F1
F2
D
2nd
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OF
–F
2
2nd
ON
OFF
OFF
ON
OFF
OFF
ON
ON
OFF
ON
OF
–F
”D” – 2nd Gear
1. Input shaft rotates clockwise.
S Forward clutch (C1) operates. (Connect input shaft to front sun gear)
2.
3.
4.
5.
Front sun gear rotates clockwise.
Planetary short pinion rotates itself counterclockwise.
Planetary long Pinion rotates itself clockwise.
Rear planetary sun gear is going to rotate counterclockwise.
S 2nd brake (B2) and 1way clutch No.1 operates. (Lock counterclockwise rotation of rear planetary sun gear)
DAEWOO V–121 BL4
5A2 – 228IAISIN AUTOMATIC TRANSAXLE
6.
7.
8.
9.
10.
11.
Planetary carrier revolves clockwise due to reaction force of planetary long pinion.
Ring gear rotates clockwise.
Counter drive gear rotates clockwise for ring gear and one.
Counter driven gear rotates counterclockwise
Differential gear drive pinion rotates counterclockwise for counter driven gear and one.
Differential gear rotates clockwise.
( Engine Brake)
1. Counter drive gear and planetary ring gear rotates counterclockwise.
2. Planetary long pinion rotates itself counterclockwise.
3. Planetary short pinion rotates itself clockwise.
4. Rear sun gear rotates clockwise due to rotation itself counterclockwise of planetary long pinion, but driving force
loses due to free of 1 way clutch No.1(F1). Therefore Engine Brake does not operate.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 229
D–3rd Gear
Position
D
3rd
Solenoid
Clutch
Brake
1 way
Clutch
Shift 1
Shift 2
Timing
C1
C2
C3
B1
B2
B3
F1
F2
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OF
–F
OF
–F
”D” – 3rd Gear
1. Input shaft rotates clockwise.
S Forward clutch (C1) operates. (Connect input shaft to front sun gear)
S Direct clutch (C2) operates. (Connect input shaft to planetary carrier)
2. Planetary short pinion and planetary long pinion can not rotate itself, and planetary gear unit rotates clockwise as
one.
3. Counter drive gear rotates clockwise for ring gear and one.
4. Counter drive gear rotates counterclockwise
DAEWOO V–121 BL4
5A2 – 230IAISIN AUTOMATIC TRANSAXLE
5. Differential drive pinion rotates counterclockwise for counter driven gear and one.
6. Differential rotates clockwise.
( Engine Brake)
Driving force is connected to input shaft directory without 1 way clutch.
Therefore Engine Brake operates.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 231
D–4th Gear
Position
D
4th
Solenoid
Clutch
Brake
Shift 1
Shift 2
Timing
C1
C2
C3
B1
B2
B3
F1
F2
OFF
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OF
–F
OF
–F
”D” – 4th Gear
1. Input shaft rotates clockwise.
S Direct clutch (C2) operates. (Connect input shaft to planetary carrier)
2.
3.
4.
Planetary carrier revolves clockwise.
Planetary long pinion rotates itself clockwise.
Rear planetary sun gear is going to rotate counterclockwise.
S O/D & 2nd brake (B1) operates. (Lock rotates planetary sun gear)
5.
6.
7.
Planetary long pinion revolves clockwise while rotating itself clockwise.
Ring gear rotates clockwise.
Counter drive gear rotates clockwise for ring gear and one.
DAEWOO V–121 BL4
1 way
Clutch
5A2 – 232IAISIN AUTOMATIC TRANSAXLE
8. Counter driven gear rotates counterclockwise.
9. Differential gear drive pinion rotates counterclockwise for counter driven gear and one.
10. Differential gear rotates clockwise.
( Engine Brake)
Driving force is connected to input shaft directory without 1 way clutch.
Therefore Engine Brake operates.
DAEWOO V–121 BL4
AISIN AUTOMATIC TRANSAXLE 5A2 – 233
Reverse Gear
Position
R
Solenoid
Clutch
Brake
Shift 1
Shift 2
Timing
C1
C2
C3
B1
B2
B3
F1
F2
V<9
km/
h
ON
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OF
–F
OF
–F
Vw
9km
/h
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OF
–F
OF
–F
Reverse Gear
1. Input shaft rotates clockwise.
S Reverse clutch (C3) operates.(Connect input shaft to rear planetary sun gear)
2.
3.
4.
1 way
Clutch
Planetary long pinion rotates itself counterclockwise.
1st & reverse brake(3) operates. (Lock rotates planetary carrier)
Ring gear rotates counterclockwise.
DAEWOO V–121 BL4
5A2 – 234IAISIN AUTOMATIC TRANSAXLE
5. Counter drive gear rotates counterclockwise for ring gear and one.
6. Counter driven gear rotates clockwise.
7. Differential gear drive pinion rotates clockwise for counter driven gear and one.
8. Differential gear rotates counterclockwise.
(Engine Brake)
Driving force is connected to input shaft directory without 1 way clutch.
Therefore Engine Brake operates.
DAEWOO V–121 BL4
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