Mitsubishi AUTOMATIC TRANSMISSION SPECIFICATIONS

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AUTOMATIC

TRANSMISSION

23-1

CONTENTS

SERVICE SPECIFICATIONS 2.................

LUBRICANT 2...............................

SPECIAL TOOLS 2..........................

TROUBLESHOOTING 4.......................

ON-VEHICLE SERVICE 44...................

Essential Service 44............................

A/T Control Component Location 50.............

A/T Control Component Check 51...............

23109000576

Torque Converter Stall Test 53..................

Hydraulic Pressure Test 55.....................

Hydraulic Circuit 60............................

Line Pressure Adjustment 61....................

Selector Lever Operation Check 61..............

TRANSMISSION CONTROL* 63..............

SHIFT LOCK AND KEY INTERLOCK

MECHANISMS 66...........................

TRANSMISSION ASSEMBLY 68..............

WARNING REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES WARNING!

(1) Improper service or maintenance of a n y component of the SRS, or any SRS-related component, can lead to personal

injury or death to service personnel (from inadvertent firing of the airbag) or to driver and passenger (from rendering the SRS inoperative).

(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized

MITSUBISHI dealer.

(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental

Restraint System(SRS)beforebeginningany service or maintenance ofany component of the SRS or anySRS-related component.

NOTE The SRS includes the following components: SRS-ECU, SRS warning lamp, air bag module, clock spring, side impact sensors and interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connection with SRS service or maintenance) are indicated in the table of contents by an asterisk (*).

23-2

AUTOMATIC TRANSMISSION -

Service Specifications/Lubricant/Special Tools

SERVICE SPECIFICATIONS

Items Standard value

Oil temperature sensor kW at 0_C 16.5 - 20.5

at 100_C 0.57 - 0.69

Resistance of damper clutch control solenoid valve coil (at 20_C) W 2.7 - 3.4

Resistance of Low-Reverse solenoid valve coil (at 20_C) W 2.7 - 3.4

Resistance of second solenoid valve coil (at 20_C) W 2.7 - 3.4

Resistance of underdrive solenoid valve coil (at 20_C) W 2.7 - 3.4

Resistance of overdrive solenoid valve coil (at 20_C) W 2.7 - 3.4

Stall speed r/min 4G93 2,200 - 2,700

4G64 2,300 - 2,800

LUBRICANT

Items Specified lubricant Quantity L

23100030284

23100040270

Transmission fluid DIA QUEEN ATF SPII, ATF SPII Mor

equivalent

SPECIAL TOOLS

Tool Number Name Use

MB991502 MUT-II sub

assembly

MD998330 (including MD998331)

MD998332 Adapter

Oil pressure gauge (2,942 kPa)

Checking of the diagnosis code

Measurement of oil pressure

7.8

23100060351

MD998900 Adapter

AUTOMATIC TRANSMISSION -

Tool Number Name Use

Special Tools

23-3

MB990635 or MB991113

MB991610 Oil filter wrench Removal and installation of automatic trans-

GENERAL SERVICE TOOL MZ203827

MB991453 Engine hanger

Steering linkage puller

Engine lifter Supporting the engine assembly during

assembly

Ball joint disconnection

mission oil filter

removal and installation of the transmission

Supporting the engine assembly during removal and installation of the transmission

23-4

AUTOMATIC TRANSMISSION -

Troubleshooting

TROUBLESHOOTING

STANDARD FLOW OF DIAGNOSIS TROUBLESHOOTING

Gathering information from customer.

Check ATF .

Check trouble symptoms.

Read the diagnosis code (GROUP00

- How to Use Troubleshooting/In-

spection Service Points.)

Diagnosis code displayed

Erase the diagnosis code (GROUP 00 - How to Use Troubleshooting/Inspection Service Points.)

Carry out the essential service (Refer to P.23-44.)

Replace the A/T-ECU.

Check trouble symptoms.

Communication with MUT-II not possible

No diagnosis code displayed

Replace ATF.

23100760657

Inspection Chart For Trouble Symptoms (Refer to P.23-24.)

Road test (Refer to P.23-6.)

Abnormality exists (diagnosis code present)

To INSPECTION CHART FOR DIAGNOSIS CODES (Refer to P.23-12.)

Search for cause.

Repair

Confirmation test (road test)

No abnormality

Recheck diagnosis codes which were read before the road test.

Diagnosis code displayed

To INSPECTION CHART FOR TROUBLE SYMPTOMS (Refer to P.23-24.)

Found Not found

INTERMITTENT MALFUNCTION (GROUP 00 - Points to Note for Intermittent Malfunctions.)

Completed

Abnormality exists (no diagnosis code)

No diagnosis code displayed

AUTOMATIC TRANSMISSION -

Troubleshooting

23-5

DIAGNOSIS FUNCTION

1. N range lamp

The N range lamp flashes at a frequency of approximately 1 Hz if there is an abnormality in any of the items in the table below which are related to the A/T system. Check the diagnosis code output if the N range lamp is flashing at a frequency of approximately 1 Hz.

N range lamp flashing items

Crank angle sensor

Input shaft speed sensor

Output shaft speed sensor

Each solenoid valve

Out of phase at each shift point

Caution If the N range lamp is flashing at a frequency of approximately 2 Hz (faster than at 1 Hz), it means that the automatic transmission fluid temperature is too high. Stop the vehicle in a safe place and wait until the N range lamp switches off.

2. Method of reading the diagnosis code

Use the MUT-II or the N range lamp to take a reading of

the diagnosis codes. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.)

23100770292

23-6

AUTOMATIC TRANSMISSION -

Troubleshooting

ROAD TEST

Check by the following procedure.

No. State prior to test

and operation

1 Ignition switch:

OFF

2 Ignition switch:

ON Engine: Stopped Selector lever

position: P

3 Ignition switch:

ST Engine: Stopped

Test and operation Judgement value Check item Diag-

Ignition switch (1) ON

Selector lever position

(1) P, (2) R, (3) N, (4) D, (5) 3, (6) 2, (7) L

Accelerator pedal (1) Released

(2) Half depressed (3) Depressed

Brake pedal (1) Depressed

(2) Released

Starting test with lever P or N range

Data list No. 54 Battery voltage [V]

Data list No. 61 (1) P, (2) R, (3)N,

(4) D, (5) 3, (6) 2, (7) L

Data list No. 11 (1) 300 - 1,000 mV

(2) Gradually rises

from (1)

(3) 4,500 - 5,500

Data list No. 25 (1) OFF

(2) ON

Data list No. 26 (1) ON

(2) OFF

Starting should be possible

23100780622

Inspection nosis code No.

Control relay 54 A/T Control

Inhibitor switch - Inhibitor switch

Throttle position sensor

<4G93> Accelerator

pedal position sensor

<4G64>

Wide open throttle switch

Stop lamp switch

Starting possible or impossible

11 12 14

25 Wide open

26 Stop lamp switch

- Starting

procedure page

if there is an

abnormality

relay system

(23-23)

system (23-35)

Throttle

position sensor

system (23-13)

Accelerator

pedal position

sensor system

(23-13)

throttle switch

system (23-15)

system (23-16)

impossible

(23-27)

4 Warming up Drive for 15

minutes or more so that the automatic fluid temperature becomes 70 90_C.

Data list No. 15 Gradually rises to

70 - 90_C

Oil temperature sensor

15 Oil temperature

sensor system

(23-13)

AUTOMATIC TRANSMISSION -

Troubleshooting

23-7

No. State prior to test

and operation

5 Engine: Idling

Selector lever position: N

Test and operation Judgement value Check item Diag-

nosis code No.

Brake pedal (Retest)

(1) Depressed (2) Released

A/C switch (1) ON

(2) OFF

Accelerator pedal (1) Released

(2) Half depressed

Selector lever position

(1) N ® D

(1) N ® D (2) N ® R

Data list No. 26 (1) ON

(2) OFF

Data list No. 65 (1) ON

(2) OFF

Data list No. 21 (1) 550 - 850 r/min

Gradually rises from (1)

Data list No. 57 (2) Data changes

Should be no abnormal shifting shocks

Time lag should be within 2 seconds

Stop lamp switch

Dual pressure switch

Crank angle sensor

Communication with engineECU

Malfunction when starting

Driving impossible

26 Stop lamp switch

- Dual pressure

21 Crank angle

51 Serial

- Engine stalling

- Shocks when

- Does not move

- Does not

- Does not move

Inspection

procedure page

if there is an

abnormality

system (23-16)

switch system

(23-35)

sensor system

(23-14)

communication

system (23-23)

during shifting

(23-29)

changing from N

to D and large

time lag (23-29)

changing from N

to R and large

time lag (23-30)

changing from N

to D,N to R and

large time lag

(23-31)

forward (23-27)

reverse (23-28)

(forward or

reverse) (23-28)

23-8

AUTOMATIC TRANSMISSION -

Troubleshooting

No. State prior to test

and operation

6 Selector lever

position: N (Carry out on a flat and straight road.)

Test and operation Judgement value Check item Diag-

nosis code No.

Selector lever position and vehicle speed

(1) Idling in

L range (Vehicle stopped)

(2) Driving at

constant speed of 10 km/h in L position

(3) Driving at

constant speed of 30 km/h in 2 position

(4) Driving at

50 km/h in 3 position with accelerator fully closed

(5) Driving at

constant speed of 50 km/h in D position (Each condition should be maintained for 10 seconds or more.)

Data list No. 63 (2) 1st, (4) 3rd, (3)

2nd, (5) 4th

Data list No. 31 (2) 0 %, (4) 100 %,

(3) 100 %, (5) 100 %

Data list No. 32 (2) 0 %, (4) 0 %,

(3) 0 %, (5) 100 %

Data list No. 33 (2)100 %, (4) 100

%, (3) 0 %, (5) 0 %

Data list No. 34 (2) 100 %, (4) 0 %,

(3) 100 %, (5) 0 %

Data list No. 29 (1) 0 km/h

(4) 50 km/h

Data list No. 22 (4) 1,800 - 2,100

r/min

Data list No. 23 (4) 1,800 - 2,100

r/min

Shift condition - -

Low and reverse solenoid valve

Underdrive solenoid valve

Second solenoid valve

Overdrive solenoid valve

Vehicle speed sensor

Input shaft speed sensor

Output shaft speed sensor

31 Low and reverse

32 Underdrive

33 Second solenoid

34 Overdrive

- Vehicle speed

22 Input shaft speed

23 Output shaft

Inspection

procedure page

if there is an

abnormality

solenoid valve

system (23-16)

solenoid valve

system (23-16)

valve system

(23-16)

solenoid valve

system (23-16)

sensor system

(23-36)

sensor system

(23-14)

speed sensor

system (23-15)

7 Selector lever

position: 3 (Carry out on a flat and straight road.)

Selector lever position and vehicle speed

(1) Release the ac-

celerator pedal fully while driving at 50 km/h in 3rd gear.

(2) Driving at

constant speed of 50 km/h in 3rd gear.

Data list No. 36 (1) 0 %

(2) Approx. 70 - 90

Data list No. 52 (1) Approx.

100 - 300 r/min

(2) Approx.

0 - 10 r/min

Damper clutch control solenoid valve

36 52

Damper clutch

control solenoid

valve system

(23-17)

AUTOMATIC TRANSMISSION -

Troubleshooting

23-9

No. State prior to test

and operation

8 Use the MUT-II to

stop the INVECSII function.

Selector lever (1) Accelerate to specified output position: D

(Carry out on a flat and straight road.)

and straight road.)

Test and operation Judgement value Check item Diag-

Monitor data list No. 11, 23, and 63 with the MUT-II.

4th gear at a throttle position

position sensor output of 1.5V (accelerator opening angle of 30 %).

(2) Gently

decelerate to a standstill.

(3) Accelerate to

4th gear at a throttle position sensor output of 2.5 V (accelerator opening angle of 50%).

(4) While driving at

60 km/h in 4th gear, shift down to 3 range.

(5) While driving at

40 km/h in 3rd gear, shift down to 2 range.

(6) While driving at

20 km/h in 2nd gear, shift down to

down to L range.

For (1), (2) and (3), the reading should be the same as the

shaft speed and no abnormal shocks should occur .

should occur . For (4), (5) and (6),

downshifting should occur immediately after the shifting operation is made.

operation is made.

Malfunction when shifting

Displaced shifting points

Does not shift

Does not shift from 1 to 2 or 2 to 1

Does not shift from 2 to 3 or 3 to 2

Does not shift from 3 to 4 or 4 to 3

Inspection nosis code No.

- Shocks and

- All points (23-32)

- Some points

- No diagnosis

22 Input shaft

23 Output shaft

31 Low and reverse

33 Second

41 1st gear ratio is

42 2nd gear ratio is

33 Second

34 Overdrive

42 2nd gear ratio is

43 3rd gear ratio is

32 Underdrive

33 Second

43 3rd gear ratio is

44 4th gear ratio is

procedure page

if there is an

abnormality

running up

(23-31)

(23-33)

code (23-33)

speed sensor

system (23-14)

speed sensor

system (23-15)

solenoid valve

system (23-16)

solenoid valve

system (23-16)

not specified

(23-18)

not specified

(23-19)

solenoid valve

system (23-16)

solenoid valve

system (23-16)

not specified

(23-19)

not specified

(23-20)

solenoid valve

system (23-16)

solenoid valve

system (23-16)

not specified

(23-20)

not specified

(23-21)

23-10

AUTOMATIC TRANSMISSION -

Troubleshooting

No. State prior to test

and operation

9 Selector lever

position: N (Carry out on a

(Carry out on a flat and straight road.)

SHIFT PATTERN

<4G93> UPSHIFT PATTERN

Throttle opening %

100

Test and operation Judgement value Check item Diag-

Monitor data list No. 22 and No. 23 with the MUT-II.

(1) Move selector

lever to

The ratio between data list No. 22 and No. 23 should be the same as the gear ratio when reversing.

Does not shift

R range, drive at constant speed of 10 km/h.

Thick line: Standard shift pattern

122

Inspection nosis code No.

procedure page

if there is an

abnormality

22 Input shaft

speed sensor

system (23-14)

23 Output shaft

speed sensor

system (23-15)

46 Reverse gear

ratio is not

specified (23-22)

1,000

DOWNSHIFT PATTERN

Throttle opening %

100

122

2®3 movement range

2,000

2 (L)

3®4 movement range

3,000

Output shaft speed r/min

4,000

3 (L,2)

5,000

6,000

Thick line: Standard shift pattern

7,000

4 (L,2,3)

2¬3 movement range

1,000

3¬4 movement range

2,000

3,000 4,000 5,000 6,000 7,000

Output shaft speed r/min

<4G64> UPSHIFT PATTERN

AUTOMATIC TRANSMISSION -

Troubleshooting

23-11

Throttle opening %

100

1,000 2,000

DOWNSHIFT PATTERN

Throttle opening %

100

2 ® 3 movement range

Thick line: Standard shift pattern

3,000 4,000

Output shaft speed r/min

3 ® 4 movement range

5,000 6,000

Thick line: Standard shift pattern

7,000

2 ¬ 3 movement range

1,000 2,000 3,000 4,000

2 (L)

3 ¬ 4 movement range

Output shaft speed r/min

3 (L,2)

5,000 6,000

4 (L,2,3)

7,000

23-12

AUTOMATIC TRANSMISSION -

Troubleshooting

INSPECTION CHART FOR DIAGNOSIS CODE

Code Diagnosis item Reference page

11 Throttle position sensor system Short circuit 23-13

15 Oil temperature sensor system Open circuit 23-13

21 Crank angle sensor system Open circuit 23-14

22 Input shaft speed sensor system Short circuit/open circuit 23-14

23 Output shaft speed sensor system Short circuit/open circuit 23-15

25 Wide open throttle switch system Short circuit 23-15

26 Stop lamp switch system Short circuit/open circuit 23-16

31 Low and reverse solenoid valve system Short circuit/open circuit 23-16

32 Underdrive solenoid valve system Short circuit/open circuit 23-16

33 Second solenoid valve system Short circuit/open circuit 23-16

<4G93> Accelerator pedal position sensor system

Accelerator pedal position sensor system <4G64>

Open circuit 23-13

Sensor maladjustment 23-13

23100790588

34 Overdrive solenoid valve system Short circuit/open circuit 23-16

36 Damper control clutch solenoid valve system Short circuit/open circuit 23-17

41 1st gear ratio does not meet the specification 23-18

42 2st gear ratio does not meet the specification 23-19

43 3rd gear ratio does not meet the specification 23-20

44 4th gear ratio does not meet the specification 23-21

46 Reverse gear ratio does not meet the specification 23-22

51 Abnormal communication with engine-ECU 23-23

52 Damper control clutch solenoid valve system Defective system 23-17

54 A/T Control relay system Short circuit to earth/

open circuit

56 N range lamp system Short circuit to earth 23-24

23-23

AUTOMATIC TRANSMISSION -

Troubleshooting

INSPECTION PROCEDURES FOR DIAGNOSIS CODES

23-13

Code No. 11, 12, 14 Throttle position sensor system <4G93>, accelerator pedal position sensor system <4G64>

If the TPS or APS output voltage is 4.8 V or higher when the engine is idling, the output is judged to be too high and diagnosis code No. 11 is output. If the TPS or APS output voltage is 0.2 V or lower at times other than when the engine is idling, the output is judged to be too low and diagnosis code No. 12 is output. If the TPS or APS output voltage is 0.2 V or lower or if it is 1.2 V or higher when the engine is idling, the TPS or APS adjustment is judged to be incorrect and diagnosis code No. 14 is output.

Throttle position sensor check <4G93> (Refer to GROUP 13B - On-vehicle Service Accelerator pedal position sensor check<4G64> (Refer to GROUP 13A - On-vehicle Service

Check the following connectors:

D A-73, B-11 <4G93> D A-63, A-27, B-11 <4G64>

Harness check D Between throttle position sensor and A/T-ECU

<4G93>

D Between accelerator pedal position sensor and A/T-ECU

<4G64>

Check the trouble symptoms.

link=13100320030.)

link=13600430011.)

Replace

Repair

Replace the A/T-ECU.

Probable cause

D Malfunction of the throttle position sensor <4G93> D Malfunction of the accelerator pedal position sensor

<4G64>

D Malfunction of connector D Malfunction of the A/T-ECU

Code No. 15 Oil temperature sensor system Probable cause

If the oil temperature sensor output voltage is 2.6 V or more even after driving for 10 minutes or more (if the oil temperature does not increase), it is judged that there is an open circuit in the oil temperature sensor and diagnosis code No. 15 is output.

Oil temperature sensor check (Refer to P.23-51.)

Check the following connectors:

Harness check D Between oil temperature sensor and A/T-ECU

Check the trouble symptoms.

A-88, B-11

Replace

Repair

D Malfunction of the oil temperature sensor D Malfunction of connector D Malfunction of the A/T-ECU

Replace the A/T-ECU.

23-14

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 21 Crank angle sensor system Probable cause

If no output pulse is detected from the crank angle sensor for 5 seconds or more while driving at 25 km/h or more, it is judged that there is an open circuit in the crank angle sensor and diagnosis code No. 21 is output.

D Malfunction of the crank angle sensor D Malfunction of connector D Malfunction of the A/T-ECU

Check the following connectors:

Harness check D Between crank angle sensor and A/T-ECU

Crank angle sensor system check (Refer to GROUP 13 - Troubleshooting.)

Check the trouble symptoms.

A-71, B-51, B-11

Repair

Replace the A/T-ECU.

Code No. 22 Input shaft speed sensor system Probable cause

If no output pulse is detected from the input shaft speed sensor for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, there is judged to be an open circuit or short-circuit in the input shaft speed sensor and diagnosis code No. 22 is output. If diagnosis code No. 22 is output four times, the transmission is locked into 3rd gear (D range) or 2nd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

Measure at the input shaft speed sensor connector A-90. D Disconnect the connector and

measure at the harness side.

(1) Voltage between 3 and earth

(Ignition switch: ON)

OK:

(2) Voltage between 2 and earth

(3) Continuity between 1 and earth

Measure output waveform of the input shaft speed sensor. (using an oscilloscope)

D Engine: 2,000 r/min (approx. 50

D Transmission: 3rd gear (Voltage)

Check the trouble symptoms.

Battery voltage

(Ignition switch: ON)

approx. 5 V

OK:

Continuity

km/h)

OK:

Conforms to the waveform shown at page 23-43 (Inspection procedure using an oscilloscope). There is no noise in the output waveform.

Check the following connectors:

A-90, B-14, B-93, B-89, B-11

Check the following harness: D Between the input shaft speed

sensor and the ignition switch

D Between the input shaft speed

sensor and A/T-ECU

Check the trouble symptoms.

Replace the input shaft speed sensor.

Check the trouble symptoms.

Replace the A/T-ECU.

D Malfunction of the input shaft speed sensor D Malfunction of the underdrive clutch retainer D Malfunction of connector D Malfunction of A/T-ECU

: Refer to the Transmission Workshop Manual.

Repair

Replace the A/T-ECU.

A/T overhaul K D Replace the underdrive clutch

Check the trouble symptoms.

Eliminate the cause of the noise.

retainer.

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 23 Output shaft speed sensor system Probable cause

If the output from the output shaft speed sensor is continuously 50% lower than the vehicle speed for 1 second or more while driving in 3rd or 4th gear at a speed of 30 km/h or more, there is judged to be an open circuit or short-circuit in the output shaft speed sensor and diagnosis code No. 23 is output. If diagnosis code No. 23 is output four times, the transmission is locked into 3rd gear (D range) or 2nd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

Measure at the output shaft speed sensor connector A-82. D Disconnect the connector and

measure at the harness side.

(1) Voltage between 3 and earth

(Ignition switch: ON)

OK:

(2) Voltage between 2 and earth

(3) Continuity between 1 and earth

Measure output waveform of the output shaft speed sensor. (using an oscilloscope)

D Engine: 2,000 r/min

D Transmission: 3rd gear

Check the trouble symptoms.

Battery voltage

(Ignition switch: ON)

OK:

approx. 5 V

OK:

Continuity

(approx. 50 km/h)

(Voltage)

OK:

Conforms to the waveform shown at page 23-43 (Inspection procedure using an oscilloscope). There is no noise in the output waveform.

Check the following connectors:

A-82, B-14, B-93, B - 89, B-11

Check the following harness: D Between the output shaft speed

sensor and the ignition switch

D Between the output shaft speed

sensor and A/T-ECU

Check the trouble symptoms.

Replace the output shaft speed sensor.

Check the trouble symptoms.

Replace the A/T-ECU.

D Malfunction of the output shaft speed sensor D Malfunction of the transfer drive gear or driven gear D Malfunction of connector D Malfunction of the A/T-ECU

: Refer to the Transmission Workshop Manual.

Repair

Replace the A/T-ECU.

A/T overhaul L D Replace the transfer drive gear and

Check the trouble symptoms.

Eliminate the cause of the noise.

23-15

driven gear.

Code No. 25 Wide open throttle switch system Probable cause

If the wide open throttle switch is on for 1 second or more with the throttle valve opening angle at 70% or less, it is judged that there is a short circuit in the wide open throttle switch and diagnosis code No. 25 is output.

Wide open throttle switch check (Refer to P.23-64.)

Check the following connectors:

Harness check D Between the wide open throttle switch and the A/T-ECU.

Check the trouble symptoms.

B-61, B-10

Replace

Repair

D Malfunction of the wide open throttle switch D Malfunction of connector D Malfunction of A/T-ECU

Replace the A/T-ECU.

23-16

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 26 Stop lamp switch system Probable cause

If the stop lamp switch is on for 5 minutes or more while driving, it is judged that there is a short circuit in the stop lamp switch and diagnosis code No. 26 is output.

D Malfunction of the stop lamp switch D Malfunction of connector D Malfunction of the A/T-ECU

Stop lamp switch check (Refer to GROUP 35 - Brake Pedal.)

Check the following connectors:

Harness check D Between stop lamp switch and A/T-ECU

Check the trouble symptoms.

B-28, B-65, B-14, B-10

Replace

Repair

Replace the A/T-ECU.

Code No. 31 Low and reverse solenoid valve system Code No. 32 Underdrive solenoid valve system Code No. 33 Second solenoid valve system Code No. 34 Overdrive solenoid valve system

If the resistance value for a solenoid valve is too large or too small, it is judged that there is a short-circuit or an open circuit in the solenoid valve and the respective diagnosis code is output. The transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

Solenoid valve check (Refer to P.23-52.)

Check the following connectors:

Harness check D Between solenoid valve and A/T-ECU

A-88, A -12X, B-12, B-10

Replace

Repair

Probable cause

D Malfunction of solenoid valve D Malfunction of connector D Malfunction of the A/T-ECU

Replace the solenoid valve.

Check the trouble symptoms.

Replace the A/T-ECU.

AUTOMATIC TRANSMISSION -

Troubleshooting

23-17

Code No. 36, 52 Damper clutch control solenoid valve system

If the resistance value for the damper clutch control solenoid valve is too large or too small, it is judged that there is a short-circuit or an open circuit in the damper clutch control solenoid valve and diagnosis code No. 36 is output. If the drive duty rate for the damper clutch control solenoid valve is 100 % for a continuous period of 4 seconds or more, it is judged that there is an abnormality in the damper clutch control system and diagnosis code No. 52 is output. When diagnosis code No. 36 is output, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

Damper clutch control solenoid valve check (Refer to P.23-52.)

Check the following connectors:

Harness check D Between damper clutch control solenoid valve and A/T-ECU

Replace the damper clutch control solenoid valve.

Check the trouble symptoms.

A-88, A-12X, B-12

Replace

Repair

Replace the A/T-ECU.

Probable cause

D Malfunction of the damper clutch control solenoid valve D Malfunction of connector D Malfunction of the A/T-ECU

23-18

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 41 1st gear ratio does not meet the specification Probable cause

If the output from the output shaft speed sensor multiplied by the 1st gear ratio is not the same as the output from the input shaft speed sensor after shifting to 1st gear has been completed, diagnosis code No. 41 is output. If diagnosis code No. 41 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

MUT-IISelf-Diag code

Is the diagnosis code No. 22 output?

MUT-IISelf-Diag code

Is the diagnosis code No. 23 output?

Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector A-90 and measure voltage between

31 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

Yes

D Malfunction of the input shaft speed sensor D Malfunction of the output shaft speed sensor D Malfunction of the underdrive clutch retainer D Malfunction of the transfer drive gear or driven gear D Malfunction of the low and reverse brake system D Malfunction of the underdrive clutch system D Noise generated

: Refer to the Transmission Workshop Manual.

Code No. 22 Input shaft speed sensor system check (Refer to P.23-14.)

Code No. 23 Output shaft speed sensor system check (Refer to P.23-15.)

Replace the input shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the underdrive clutch retainer.

Check the trouble symptoms.

Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector A-82 and measure voltage between

32 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

A/T overhaul L D Underdrive clutch system check

(No. 42, No. 43, or no diagnosis code is output).

D Low and reverse brake system check

(No. 46 or no diagnosis code is output).

Eliminate the cause of the noise.

Replace the output shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the transfer drive gear and driven gear.

Check the trouble symptoms.

Eliminate the cause of the noise.

AUTOMATIC TRANSMISSION -

Troubleshooting

CodeNo.422ndgear ratio does notmeet thespecification Probable cause

If the output from the output shaft speed sensor multiplied by the 2nd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 2nd gear has been completed, diagnosis code No. 42 is output. If diagnosis code No. 42 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

MUT-IISelf-Diag code

Is the diagnosis code No. 22 output?

MUT-IISelf-Diag code

Is the diagnosis code No. 23 output?

Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector A-90 and measure voltage between

31 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

Yes

D Malfunction of the input shaft speed sensor D Malfunction of the output shaft speed sensor D Malfunction of the underdrive clutch retainer D Malfunction of the transfer drive gear or driven gear D Malfunction of the second brake system D Malfunction of the underdrive clutch system D Noise generated

: Refer to the Transmission Workshop Manual.

Code No. 22 Input shaft speed sensor system check (Refer to P.23-14.)

Code No. 23 Output shaft speed sensor system check (Refer to P.23-15.)

Replace the input shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the underdrive clutch retainer.

Check the trouble symptoms.

23-19

Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector A-82 and measure voltage between

32 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

A/T overhaul L D Underdrive clutch system check

(No. 41, No. 43, or no diagnosis code is output).

D Second brake system check

(No. 44 or no diagnosis code is output).

Eliminate the cause of the noise.

Replace the output shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the transfer drive gear and driven gear.

Check the trouble symptoms.

Eliminate the cause of the noise.

23-20

AUTOMATIC TRANSMISSION -

Troubleshooting

CodeNo.433rd gear ratio does not meet thespecification Probable cause

If the output from the output shaft speed sensor multiplied by the 3rd gear ratio is not the same as the output from the input shaft speed sensor after shifting to 3rd gear has been completed, diagnosis code No. 43 is output. If diagnosis code No. 43 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

MUT-IISelf-Diag code

Is the diagnosis code No. 22 output?

MUT-IISelf-Diag code

Is the diagnosis code No. 23 output?

Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector A-90 and measure voltage between

31 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

Yes

D Malfunction of the input shaft speed sensor D Malfunction of the output shaft speed sensor D Malfunction of the underdrive clutch retainer D Malfunction of the transfer drive gear or driven gear D Malfunction of the underdrive clutch system D Malfunction of the overdrive clutch system D Noise generated

: Refer to the Transmission Workshop Manual.

Code No. 22 Input shaft speed sensor system check (Refer to P.23-14.)

Code No. 23 Output shaft speed sensor system check (Refer to P.23-15.)

Replace the input shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the underdrive clutch retainer.

Check the trouble symptoms.

Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector A-82 and measure voltage between

32 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

A/T overhaul L D Underdrive clutch system check

(No. 41, No. 42, or no diagnosis code is output).

D Overdrive clutch system check

(No. 44 or no diagnosis code is output).

Eliminate the cause of the noise.

Replace the output shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the transfer drive gear and driven gear.

Check the trouble symptoms.

Eliminate the cause of the noise.

AUTOMATIC TRANSMISSION -

Troubleshooting

CodeNo. 44 4thgear ratio does not meet thespecification Probable cause

If the output from the output shaft speed sensor multiplied by the 4th gear ratio is not the same as the output from the input shaft speed sensor after shifting to 4th gear has been completed, diagnosis code No. 44 is output. If diagnosis code No. 44 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

MUT-IISelf-Diag code

Is the diagnosis code No. 22 output?

MUT-IISelf-Diag code

Is the diagnosis code No. 23 output?

Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector A-90 and measure voltage between

31 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

Yes

D Malfunction of the input shaft speed sensor D Malfunction of the output shaft speed sensor D Malfunction of the underdrive clutch retainer D Malfunction of the transfer drive gear or driven gear D Malfunction of the second brake system D Malfunction of the overdrive clutch system D Noise generated

: Refer to the Transmission Workshop Manual.

Code No. 22 Input shaft speed sensor system check (Refer to P.23-14.)

Code No. 23 Output shaft speed sensor system check (Refer to P.23-15.)

Replace the input shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the underdrive clutch retainer.

Check the trouble symptoms.

23-21

Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector A-82 and measure voltage between

32 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

A/T overhaul L D Second brake system check

(No. 42 or no diagnosis code is output).

D Overdrive clutch system check

(No. 43 or no diagnosis code is output).

Eliminate the cause of the noise.

Replace the output shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the transfer drive gear and driven gear.

Check the trouble symptoms.

Eliminate the cause of the noise.

23-22

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 46 Reverse gear ratio does not meet the specification

If the output from the output shaft speed sensor multiplied by the reverse gear ratio is not the same as the output from the input shaft speed sensor after shifting to reverse gear has been completed, diagnosis code No. 46 is output. If diagnosis code No. 46 is output four times, the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

MUT-IISelf-Diag code

Is the diagnosis code No. 22 output?

MUT-IISelf-Diag code

Is the diagnosis code No. 23 output?

Measure output waveform from the input shaft speed sensor. (using an oscilloscope) D Connect the connector A-90 and measure voltage between

31 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

Yes

Code No. 22 Input shaft speed sensor system check (Refer to P.23-14.)

Code No. 23 Output shaft speed sensor system check (Refer to P.23-15.)

Replace the input shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the underdrive clutch retainer.

Check the trouble symptoms.

Probable cause

: Refer to the Transmission Workshop Manual.

Measure output waveform from the output shaft speed sensor. (using an oscilloscope) D Connect the connector A-82 and measure voltage between

32 and 43 at the A/T-ECU.

D Engine: 2,000 r/min (approx. 50 km/h) D Selector lever position: 3

(Voltage)

OK:

A waveform such as the one shown on P.23-43(Inspection Procedure Using an Oscilloscope) is output (flashing between 0 ¬® 5V) and there is no noise appearing in the waveform.

A/T overhaul L D Low and reverse brake system check

(No. 41 or no diagnosis code is output).

D Reverse clutch system check (No diagnosis code is output).

Eliminate the cause of the noise.

Replace the output shaft speed sensor.

Check the trouble symptoms.

A/T overhaul L D Replace the transfer drive gear and driven gear.

Check the trouble symptoms.

Eliminate the cause of the noise.

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 51 Abnormal communication with engine-ECU Probable cause

If normal communication is not possible for a continuous period of 1 second or more when the ignition switch is at the ON position, the battery voltage is 10 V or more and the engine speed is 450 r/min or more, diagnosis code No. 51 is output. Diagnosis code No. 51 is also output if the data being received is abnormal for a continuous period of 4 seconds under the same conditions.

D Malfunction of connector D Malfunction of the engine-ECU D Malfunction of the A/T-ECU

23-23

Check the following connectors:

D B-54, B-52, B-10 <4G93> D B-53, B-52, B-10 <4G64>

Harness check D Between engine-ECU and A/T-ECU

Check the trouble symptoms.

Replace the engine-ECU.

Check the trouble symptoms.

Repair

Replace the A/T-ECU.

Code No. 54 A/T control relay system Probable cause

If the A/T control relay voltage is less than 7 V after the ignition switch has been turned ON, it is judged that there is an open circuit or a short-circuit in the A/T control relay circuit and diagnosis code No. 54 is output. Then the transmission is locked into 3rd gear as a fail-safe measure, and the N range lamp flashes at a frequency of 1 Hz.

Check the A/T control relay. (Refer to P.23-52.)

Check the following connectors:

Harness check

D Between control relay and body earth D Between control relay and fusible link D Between control relay and A/T-ECU

Check the trouble symptoms.

A-12X, A-29, B-12, B-10

Replace

Repair

D Malfunction of the A/T control relay D Malfunction of connector D Malfunction of the A/T-ECU

Replace the A/T-ECU.

23-24

AUTOMATIC TRANSMISSION -

Troubleshooting

Code No. 56 N range lamp system Probable cause

If the N range signal is off after an N range lamp illumination instruction (ON instruction) has been given, it is judged that there is a short-circuit in the N range lamp earth and diagnosis code No. 56 is output.

D Malfunction of the N range lamp bulb D Malfunction of connector D Malfunction of the A/T-ECU

Check the N range lamp bulb (Refer to GROUP 52A - Instrument Panel.)

Check the following connectors:

Harness check D Between N range lamp bulb and A/T-ECU

Check the trouble symptoms.

B-01, B-14, A-89, B-10

Replace

Repair

Replace the A/T-ECU.

INSPECTION CHART FOR TROUBLE SYMPTOMS

Trouble symptom Inspection

procedure No.

MUT-IIcan not communicate with any systems. 1 23-25

MUT-IIcan not communicate with the A/T-ECU. 2 23-26

Driving impossible Starting impossible 3 23-27

Does not move forward 4 23-27

Does not reverse 5 23-28

Reference page

23100800588

Does not move (forward or reverse) 6 23-28

Malfunction when starting Engine stalling when shifting 7 23-29

Shocks when changing from N to D and large time lag 8 23-29

Shocks when changing from N to R and large time lag 9 23-30

Shocks when changing from N to D, N to R and large

10 23-31

time lag

Malfunction when shifting Shocks and running up 11 23-31

AUTOMATIC TRANSMISSION -

Troubleshooting

23-25

Trouble symptom Reference

Inspection procedure No.

page

Displaced shifting points All points 12 23-32

Some points 13 23-33

Does not shift No diagnosis codes 14 23-33

Malfunction while driving Poor acceleration 15 23-34

Vibration 16 23-34

Inhibitor switch system 17 23-35

Dual pressure switch system 18 23-35

Vehicle speed sensor system 19 23-36

INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS

INSPECTION PROCEDURE 1

MUT-IIcan not communicate with any systems.

It is suspected that this malfunction is caused by a defective power supply and earth circuits of the diagnosis connector.

Probable cause

Malfunction of diagnosis connector

Malfunction of harness or connector

Measure at diagnosis connector B-25.

Voltage between terminal No. 16 and

body earth

Battery voltage

OK:

Measure at diagnosis connector B-25.

Continuity between terminal Nos. 4,

5 and body earth

Continuity

OK:

Check trouble symptoms.

Replace the MUT-II.

Check the following connectors:

B-25, B-91, B-92, B-66

Check the trouble symptoms.

Check the following connector:

Check trouble symptoms.

B-25

Repair

Check the harness wire between the fusible link and the diagnosis connector, and repair if necessary.

Repair

Check the harness wire between the diagnosis connector and the earth, and repair if necessary.

23-26

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 2

Troubleshooting

MUT-IIcan not communicate with the A/T-ECU.

It is suspected that this malfunction is caused by an open circuit in A/T-ECU power supply circuit or diagnosis output circuit.

Measure at diagnosis connector B-25 and A/T-ECU connectors B-12, B-10. D Disconnect the connectors, and

measure at the harness side.

D Continuity between the following

terminals: No. 1 (of diagnosis connector) and 23 (of B-12) No. 7 (of diagnosis connector) and 63 (of B-10)

OK:

Continuity

Measure at A/T-ECU connector B-12. D Disconnect the connector, and

measure at the harness side.

D Ignition switch: ON D Voltage between Nos. 11, 24 and

body earth

OK:

Battery voltage

Measure at A/T-ECU connectors B-12, B-10. D Disconnect the connector, and

measure at the harness side.

D Continuity between terminal Nos. 12,

13, 25, 26, 72 - body earth

OK:

Continuity

Check the following connectors

B-12, B-10

Check the following connectors:

B-12, B-10, B-14, B-102, B-25

Check trouble symptoms.

Check the following connectors:

B-12, B-14, B-93, B-89

Check trouble symptoms.

Check the following connectors:

B-12, B-10

Check trouble symptoms.

Probable cause

D Malfunction of harness or connector D Malfunction of A/T-ECU

Repair

Check the harness wire between the A/T-ECU and the diagnosis connector, and repair if necessary.

Repair

Check the harness wire between the ignition switch and the A/T-ECU, and repair if necessary.

Repair

Check the harness wire between the A/T-ECU and the earth, and repair if necessary.

Replace the A/T-ECU.

Repair

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 3

Troubleshooting

23-27

Starting impossible

Starting is not possible when the selector lever is in P or N range. In such cases, the cause is probably a defective inhibitor switch system, transmission control cable assembly, engine system, torque converter or oil pump.

Check the inhibitor switch system (Refer to P.23-35, INSPECTION PROCEDURE 17).

Check the transmission control cable assembly.

Check the engine system. D Control system, ignition system, fuel system, main engine

system

Torque converter check D Check for incorrect installation (inserted at an angle, etc.) and

for damaged splines.

Replace the oil pump assembly. L (The oil pump cannot be disassembled.)

Repair, replace

Repair if possible. If the splines are damaged and repairs are not possible, replace the torque converter assembly.

Probable cause

D Malfunction of the inhibitor switch system D Malfunction of the transmission control cable assembly D Malfunction of the engine system D Malfunction of the torque converter D Malfunction of the oil pump

: Refer to the Transmission Workshop Manual.

INSPECTION PROCEDURE 4

Does not move (forward)

If the vehicle does not move forward when the selector lever is shifted from N to D, 3, 2 or L range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the underdrive clutch or valve body.

MUT-IIActuator test

D No. 2 Underdrive solenoid valve

OK:

Sound of operation can be heard.

Hydraulic pressure test (Refer to P.23-55.) D Measure the hydraulic pressure for each element when in L

range.

Standard value:

Underdrive clutch system check L D Remove the transmission assembly, valve body cover and valve

body.

D Pistons should operate and pressure should be maintained

when air is blown through the underdrive clutch oil hole in the transmission case.

Refer to P.23-56.

Probable cause

D Abnormal line pressure D Malfunction of the underdrive solenoid valve D Malfunction of the underdrive clutch D Malfunction of the valve body

: Refer to the Transmission Workshop Manual.

Replace the solenoid valve. L

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

Underdrive clutch check L D Check for burning of the facing, defective piston seal rings

and interference at the retainer.

23-28

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 5

Troubleshooting

Does not reverse

If the vehicle does not reverse when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal pressure in the reverse clutch or low and reverse brake or a malfunction of the reverse clutch, low and reverse brake or valve body.

MUT-IIActuator test

D No. 1 Low and reverse solenoid valve

OK:

Sound of operation can be heard.

Hydraulic pressure check (Refer to P.23-55.) D Measure the reverse clutch pressure in R range.

Standard value:

Hydraulic pressure check (Refer to P.23-55.) D Measure the low and reverse brake pressure in R range.

Standard value:

Reverse clutch system and low and reverse brake system check

L D Remove the transmission assembly, valve body cover and valve

body.

D Pistons should operate and pressure should be maintained

when air is blown through the reverse clutch oil hole and the low reverse brake oil hole in the transmission case.

Refer to P.23-56.

Replace the low and reverse solenoid valve. L

Valve body disassembly, cleaning and reassembly L

D Pay particular attention to loosening of bolts, and to damage

D If the damage cannot be repaired, replace the valve body

Reverse clutch and low and reverse brake check L D Check for burning of the facing, defective piston seal rings

Probable cause

: Refer to the Transmission Workshop Manual.

and slippage of O-rings, valves and valve bodies.

assembly.

and interference at the retainer.

INSPECTION PROCEDURE 6

Does not move (forward or reverse)

If the vehicle does not move forward or reverse when the selector lever is shifted to any position while the engine is idling, the cause is probably abnormal line pressure, or a malfunction of the power train, oil pump or valve body.

Hydraulic pressure check (Refer to P.23-55.) D Measure the hydraulic pressure for each element when moving

forward and back.

Standard value:

Replace the oil pump assembly. L (The oil pump cannot be disassembled.)

Refer to P.23-56.

Probable cause

D Abnormal line pressure D Malfunction of power train D Malfunction of the oil pump D Malfunction of the valve body

: Refer to the Transmission Workshop Manual.

Power train check L D Disassemble the transmission, check the condition of the

planetary carrier, output shaft and differential, etc.

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 7

Troubleshooting

23-29

Engine stalling when shifting

If the engine stalls when the selector lever is shifted from N to D or R range while the engine is idling, the cause is probably a malfunction of the engine system, damper clutch solenoid valve, valve body or torque converter (damper clutch malfunction).

Engine system check D Check the control system, ignition system, fuel system and

main system.

Replace the damper clutch control solenoid valve.

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

INSPECTION PROCEDURE 8

Shocks when changing from N to D and large time lag

If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range while the engine is idling, the cause is probably abnormal underdrive clutch pressure or a malfunction of the underdrive clutch, valve body, TPS <4G93> or APS <4G64>.

Probable cause

D Malfunction of the engine system D Malfunction of the damper clutch control solenoid valve D Malfunction of the valve body D Malfunction of the torque converter (Malfunction of the

damper clutch)

: Refer to the Transmission Workshop Manual.

Repair, replace

Replace the torque converter.

Probable cause

D Abnormal underdrive clutch pressure D Malfunction of the underdrive solenoid valve D Malfunction of the underdrive clutch D Malfunction of the valve body D Malfunction of the idle position switch D Malfunction of the TPS <4G93> D Malfunction of the APS <4G64>

MUT-IIActuator test

D No. 2 Underdrive solenoid valve

OK:

Sound of operation can be heard.

When does the shock occur?

When shifting

Hydraulic pressure test (Refer to P.23-55.) D Measure the underdrive clutch pressure when shifting from

NtoD.

Standard value:

Underdrive clutch system check L D Remove the transmission assembly, valve body cover and valve

body.

D Pistons should operate and pressure should be maintained

when air is blown through the underdrive clutch oil hole in the transmission case.

Underdrive clutch check L D Check for burning of the facing, defective piston seal rings

and interference at the retainer.

Refer to P.23-56.

When starting

: Refer to the Transmission Workshop Manual.

Replace the underdrive solenoid valve. L

Shocks sometimes occur

No Yes

MUT-IIData list

D No. 11 TPS/APS

OK:

Increases in proportion to accelerator pedal opening angle.

OK NG

Code Nos. 11, 12, 14 TPS/APS system check (Refer to P.23-13.)

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

23-30

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 9

Troubleshooting

Shocks when changing from N to R and large time lag

If abnormal shocks or a time lag of 2 seconds or more occurs when the selector lever is shifted from N to R range while the engine is idling, the cause is probably abnormal reverse clutch pressure or low and reverse brake pressure, or a malfunction of the reverse clutch, low and reverse brake, valve body, TPS <4G93> or APS <4G64>.

MUT-IIActuator test

D No. 1 Low and reverse solenoid valve

OK:

Sound of operation can be heard.

When does the shock occur?

When shifting

Hydraulic pressure test (Refer to P.23-55.) D Measure the reverse clutch pressure in R range.

Standard value:

Hydraulic pressure test (Refer to P.23-55.) D Measure the low and reverse brake pressure in R range.

Standard value:

Reverse clutch system and low reverse brake system check L D Remove the transmission assembly, valve body cover and valve

body.

D Pistons should operate and pressure should be maintained

when air is blown through the reverse clutch oil hole and low and reverse brake oil hole in the transmission case.

Refer to P.23-56.

When starting

Replace the low and reverse solenoid valve. L

Shocks sometimes occur

MUT-IIData list

D No. 11 TPS/APS

Code No. 11, 12, 14 TPS/APS system check (Refer to P.23-13.)

Valve body disassembly, cleaning and reassembly L

D Pay particular attention to loosening of bolts, and to damage

D If the damage cannot be repaired, replace the valve body

Probable cause

D Abnormal reverse clutch pressure D Abnormal low and reverse brake pressure D Malfunction of the low and reverse solenoid valve D Malfunction of the reverse clutch D Malfunction of the low and reverse brake D Malfunction of the valve body D Malfunction of the idle position switch D Malfunction of the TPS <4G93> D Malfunction of the APS <4G64>

: Refer to the Transmission Workshop Manual.

No Yes

OK:

Increases in proportion to accelerator pedal opening angle.

OK NG

and slippage of O-rings, valves and valve bodies.

assembly.

Reverse clutch and low reverse brake check L D Check for burning of the facing, defective piston seal rings

and interference at the retainer.

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 10

Troubleshooting

23-31

Shocks when changing from N to D, N to R and large time lag

If abnormal shocks or a time lag of 2 seconds or more occur when the selector lever is shifted from N to D range and from N to R range while the engine is idling, the cause is probably abnormal line pressure or a malfunction of the oil pump or valve body.

Hydraulic pressure test (Refer to P.23-55.) D Measure the hydraulic pressure for each element when in D

range and R range.

Standard value:

When does the shock occur?

Replace the oil pump assembly. L (The oil pump cannot be disassembled.)

Refer to P.23-56.

When shifting

When starting

INSPECTION PROCEDURE 11

Shocks and running up

If shocks occur when driving due to upshifting or downshifting and the transmission speed becomes higher than the engine speed, the cause is probably abnormal line pressure or a malfunction of a solenoid valve, oil pump, valve body or of a brake or clutch.

Probable cause

D Abnormal line pressure D Malfunction of the oil pump D Malfunction of the valve body

: Refer to the Transmission Workshop Manual.

Adjust the line pressure. (Refer to P.23-61.)

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

Probable cause

D Abnormal line pressure D Malfunction of each solenoid valve D Malfunction of the oil pump D Malfunction of the valve body D Malfunction of each brake or each clutch

MUT-IIActuator test

D No. 1 Low and reverse solenoid valve D No. 2 Underdrive solenoid valve D No. 3 Second solenoid valve D No. 4 Overdrive solenoid valve

OK:

Sound of operation can be heard.

Adjust the line pressure. (Refer to P.23-61.)

Clutch and brake check L D Check for burning of the facing, defective piston seal rings

and interference at the retainer.

: Refer to the Transmission Workshop Manual.

Replace the solenoid valve.

Replace the oil pump assembly. L (The oil pump cannot be disassembled.)

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

23-32

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 12

Troubleshooting

All points (Displaced shifting points)

If all shift points are displaced while driving, the cause is probably a malfunction of the output shaft speed sensor, TPS or of a solenoid valve.

MUT-IIData list

D No. 23 Output shaft speed sensor

OK:

Increases in proportion to vehicle speed.

MUT-IIData list

D No. 11 TPS/APS

OK:

Increases in proportion to accelerator pedal opening angle

MUT-IIData list

D No. 31 Low and reverse solenoid valve duty % D No. 32 Underdrive solenoid valve duty % D No. 33 Second solenoid valve duty % D No. 34 Overdrive solenoid valve duty %

OK:

Refer to the table below.

Adjust the line pressure. (Refer to P.23-61.)

Code No. 23 - Output shaft speed sensor system (Refer to P.23-15.)

Code No. 11, 12, 14 TPS/APS system check (Refer to P.23-13.)

Replace the solenoid valve. L

Replace the A/T-ECU.

Valve body disassembly, cleaning and reassembly L

D Pay particular attention to loosening of bolts, and to damage

D If the damage cannot be repaired, replace the valve body

Probable cause

D Malfunction of the output shaft speed sensor D Malfunction of the throttle position sensor D Malfunction of each solenoid valve D Abnormal line pressure D Malfunction of the valve body D Malfunction of the A/T-ECU

: Refer to the Transmission Workshop Manual.

and slippage of O-rings, valves and valve bodies.

assembly.

No. 31 No. 32 No. 33 No. 34

Driving at constant speed in 1st gear 0% 0% 100 % 100 %

Driving at constant speed in 2nd gear 100 % 0% 0% 100 %

Driving at constant speed in 3rd gear 100 % 0% 100 % 0%

Driving at constant speed in 4th gear 100 % 100 % 0% 0%

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 13

Troubleshooting

23-33

Some points (Displaced shifting points)

If some of the shift points are displaced while driving, the cause is probably a malfunction of the valve body, or it is related to control and is not an abnormality.

INVECS-IICANCEL COMMAND

D Use the MUT-II to stop the

INVECS-II function.

Does standard shifting occur normally?

Yes

Does the problem occur only when the automatictransmissionfluidtemperature is - 29_C or lower or 125_C or higher?

Yes

It is related to control and is not an abnormality.

INSPECTION PROCEDURE 14

No diagnosis codes (Does not shift)

If shifting does not occur while driving and no diagnosis codes are output, the cause is probably a malfunction of the inhibitor switch, or A/T-ECU.

Does the transmission remain in 3rd gear with selector lever in position D?

Yes

Is backup power being supplied to the A/T-ECU?

Is power being supplied to the A/T-ECU?

Power supply circuit check D Pay particular attention to open

circuits in the harnesses, poor connector connections and open circuits in fuses.

D If there is a blown fuse, investigate

why a short-circuit has occurred and then replace the fuse.

Yes

MUT-IIData list

D No. 61 Inhibitor switch

OK:

A/T-ECU input signal and selector lever position should match.

Replace the A/T-ECU.

Probable cause

D Malfunction of the valve body

: Refer to the Transmission Workshop Manual.

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening

of bolts, and to damage and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired,

replace the valve body assembly.

Probable cause

D Malfunction of the inhibitor switch D Malfunction of the A/T-ECU

Inhibitor switch check D INSPECTION PROCEDURE 17 -

Inhibitor switch system check. (Refer to P.23-35.)

23-34

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 15

Troubleshooting

Poor acceleration

If acceleration is poor even if downshifting occurs while driving, the cause is probably a malfunction of the engine system or of a brake or clutch.

Engine system check D Check the control system, ignition system, fuel system and

main system.

Brake or clutch check L D Check for burning of the facing, defective piston seal rings

and interference at the retainer.

INSPECTION PROCEDURE 16

Vibration

If vibration occurs when driving at constant speed or when accelerating and deceleration in top range, the cause is probably abnormal damper clutch pressure or a malfunction of the engine system, damper clutch control solenoid valve, torque converter or valve body.

MUT-IIActuator test

D No. 6 Damper clutch control solenoid valve

OK:

Sound of operation can be heard.

Does the problem occur even when the oil temperature sensor connector is disconnected?

Hydraulic pressure test (Refer to P.23-55.) D Measure the damper clutch pressure.

Standard value:

Replace the torque converter assembly.

Refer to P.23-56.

Yes

Probable cause

D Malfunction of the engine system D Malfunction of the brake or clutch

: Refer to the Transmission Workshop Manual.

Replace, repair

Probable cause

D Abnormal damper clutch pressure D Malfunction of the engine system D Malfunction of the damper clutch control solenoid valve D Malfunction of the torque converter D Malfunction of the valve body

: Refer to the Transmission Workshop Manual.

Replace the damper clutch control solenoid valve. L

Engine system check D Check the control system, ignition system, fuel system and

main system.

Valve body disassembly, cleaning and reassembly L D Pay particular attention to loosening of bolts, and to damage

and slippage of O-rings, valves and valve bodies.

D If the damage cannot be repaired, replace the valve body

assembly.

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 17

Troubleshooting

23-35

Inhibitor switch system

The cause is probably a malfunction of the inhibitor switch circuit, ignition switch circuit or a defective A/T-ECU.

Inhibitor switch check (Refer to P.23-48.)

Check the voltage of the inhibitor switch connector A-89. D Disconnect the connector and

measure at the harness side.

D Voltage between terminal No. 8 and

earth

OK:

Battery voltage

Check the following connectors:

A-89, B-10

Harness check D Between inhibitor switch and

A/T-ECU connector

Check the trouble symptoms.

Replace

Repair

Check the following connectors:

B-14, B-93, B-89

Harness check D Between inhibitor switch and

ignition switch

Check the trouble symptoms.

Ignition switch check (Refer to GROUP54 - Ignition Switch.)

Replace the A/T-ECU.

Probable cause

D Malfunction of the inhibitor switch D Malfunction of the ignition switch D Malfunction of connector D Malfunction of the A/T-ECU

Repair

INSPECTION PROCEDURE 18

Dual pressure switch system

The cause is probably a defective dual pressure switch circuit or a defective A/T-ECU. D Malfunction of the dual pressure switch

Dual pressure switch check (Refer to GROUP 55 - On-vehicle service.)

Check the voltage of the A/T-ECU connector B-12. D Disconnect the connector and

check at the harness side.

D Ignition switch: ON D A/C switch: ON D Voltage between terminal No. 10

and earth

OK:

Battery voltage

Replace the A/T-ECU.

Replace

Check the following connectors:

B-12, A-28

Check the trouble symptoms.

Check the A/C system. (Refer to GROUP 55 - Troubleshooting.)

Replace the A/T-ECU.

Probable cause

D Malfunction of connector D Malfunction of A/C system D Malfunction of the A/T-ECU

Repair

23-36

AUTOMATIC TRANSMISSION -

INSPECTION PROCEDURE 19

Troubleshooting

Vehicle speed sensor system

The cause is probably a defective vehicle speed sensor circuit or a defective A/T-ECU. D Malfunction of the vehicle speed sensor

Check the vehicle speed sensor. (Refer to GROUP 54 - Combination Meters.)

Measure at the vehicle speed sensor connector A-85. D Disconnect the connector, and measure at the harness side. (1) Voltage between 1 and earth (Ignition switch: ON)

OK:

(2) Voltage between 3 and earth (Ignition switch: ON)

(3) Continuity between 2 and earth

Check the following connector:

A-85

Check trouble symptom.

Check the harness wire between the engine-ECU and the vehicle speed sensor connector.

Replace the engine-ECU.

Battery voltage

OK:

4.8 - 5.2 V

OK:

Continuity

Repair

(1) NG

(2) NG

(3) NG

Replace

Check the following connectors:

A-81

Check the harness wire between the vehicle speed sensor and the earth, and repair if necessary.

Probable cause

D Malfunction of connector D Malfunction of the A/T-ECU

Check the following connectors:

A-81, B-14, B-91, B-89

Check trouble symptom.

Check the harness wire between the vehicle speed sensor and ignition switch connector.

Check the ignition switch. (Refer to GROUP 54 - Ignition switch.)

Check the following connectors:

A-81, B-14, B-10

Check trouble symptom.

Check the harness wire between the engine-ECU and the vehicle speed sensor connector.

Replace the engine-ECU.

Check trouble symptom.

Repair

AUTOMATIC TRANSMISSION -

Troubleshooting

23-37

DATA LIST REFERENCE TABLE

Item No. Check item Check requirement Normal value

11 Throttle position sensor

<4G93> Accelerator pedal

position sensor <4G64>

15 Oil temperature sensor Warming up Drive for 15 minutes or

21 Crank angle sensor Engine: Idling

22 Input shaft speed

sensor

Engine: Stopped Selector lever

position: P

Selector lever position: P

Selector lever position: 3

Accelerator pedal: Released

Accelerator pedal: Half depressed

Accelerator pedal: Depressed

more so that the automatic transmission fluid temperature becomes 70 - 90 _C.

Accelerator pedal: Released

Accelerator pedal: Half depressed

Driving at constant speed of 50 km/h in 3rd gear

300 - 1,000 mV

Gradually rises from the above value

4,500 - 5,500 mV

Gradually rises to 70 - 90 _C

550 - 900 r/min

Gradually rises from the above value

1,800 - 2,100 r/min

23100810284

23 Output shaft speed

sensor

25 Wide open throttle Accelerator pedal Released OFF

switch position

26 Stop lamp switch Ignition switch: ON Brake pedal: Depressed ON

29 Vehicle speed sensor Selector lever

31 Low and reverse

solenoid valve duty %

32 Underdrive solenoid

valve duty %

33 Second solenoid valve

duty %

Selector lever position: 3

Engine: Stopped

position: 3

Selector lever position: L, 2, 3, D

Driving at constant speed of 50 km/h in 3rd gear

Depressed ON

Brake pedal: Released OFF

Idling with 1st gear (Vehicle stopped)

Driving at constant speed of 50 km/h in 3rd gear

10 km/h in 1st gear No. 31: 0 %, No. 32: 0

30 km/h in 2nd gear No. 31: 100 %, No. 32:

50 km/h in 3rd gear No. 31: 100 %, No. 32:

1,800 - 2,100 r/min

0 km/h

50 km/h

%, No. 33: 100 %, No. 34: 100%

0 %, No. 33: 0 %, No. 34: 100%

0 %, No. 33: 100 %, No. 34: 0%

34 Overdrive solenoid valve

duty %

70 km/h in 4th gear No. 31: 100 %, No. 32:

100 %, No. 33: 0 %, No. 34: 0%

23-38

Item No. Normal valueCheck requirementCheck item

AUTOMATIC TRANSMISSION -

Troubleshooting

36 Damper clutch control

solenoid valve duty %

52 Amount of damper

clutch slippage

54 Control relay output

voltage

57 Engine volumetric

efficiency

61 Inhibitor switch Ignition switch: ON Selector lever position: P P

Selector lever position: 3

Ignition switch : OFF Ignition switch:

Selector lever position: N

Engine: Stopped

Driving at 50 km/h in 3rd gear with accelerator released

Driving at constant speed of 70 km/h in 3rd gear

Driving at 50 km/h in 3rd gear with accelerator fully closed

Driving at constant speed of 70 km/h in 3rd gear

ON ® OFF

N range with accelerator pedal released ® depressed.

Selector lever position: R R

Selector lever position: N N

Selector lever position: D D

Approx. 70 - 90 %

Approx. 100 - 300 r/min

Approx. 0 - 10 r/min

Battery voltage (V) ® 0V

Data changes

Selector lever position: 3 3

Selector lever position: 2 2

Selector lever position: L L

63 Shift position Selector lever posi-

tion: L, 2, 3, D

65 Dual pressure switch Engine: Idling A/C switch: ON ON

Selector lever position: N

Driving at constant speed of 10 km/h in 1st gear

Driving at constant speed of 30 km/h in 2nd gear

Driving at constant speed of 50 km/h in 3rd gear

Driving at constant speed of 70 km/h in 4th gear

A/C switch: OFF OFF

1st

2nd

3rd

4th

AUTOMATIC TRANSMISSION -

Troubleshooting

23-39

ACTUATOR TEST JUDGEMENT VALUE

Item No. Check item Test content Check requirement Normal value

1 Low reverse solenoid valve Drive the solenoid Ignition switch: ON The operation sound should

valve specified by

2 Underdrive solenoid valve

3 Second solenoid valve

4 Overdrive solenoid valve

6 Damper clutch control

solenoid valve

12 A/T control relay Control relay is OFF

the MUT-II at 50 % duty for 5 seconds. No other solenoid valve should be energized.

for 3 seconds.

Selector lever position: P

Engine: 0 r/min Vehicle speed:

Vehicle speed: 0 km/h (Vehicle stopped)

Throttle (Accelerator) opening voltage: Less than 0 V

be audible when the solenoid valve is driven.

Data list No. 54 (1) During test: 0 V

(2) Normal: Battery voltage

[V]

INVECS-IICANCEL COMMAND

Item No. Item Content Remarks 14 INVECS-II Stop the INVECS-II control and change gears

according to the standard shift pattern.

Use this function when carrying out procedure 8 in the road tests.

23100820157

23100950122

23-40

AUTOMATIC TRANSMISSION -

Troubleshooting

CHECK AT A/T-ECU TERMINALS

Terminal No.

1 Underdrive solenoid valve Selector lever position: D (1st gear) Battery voltage

2 Solenoid valve power supply Ignition switch: OFF 0V

Check item Check requirement Standard value

Selector lever position: P Approx.7 - 9 V

23100840252

Ignition switch: ON Battery voltage

3 Solenoid valve power supply Ignition switch: OFF 0V

Ignition switch: ON Battery voltage

10 A/C compressor load signal A/C switch: OFF 0V

A/C switch: ON Battery voltage

11 Power supply Ignition switch: OFF 0V

Ignition switch: ON Battery voltage

12 Earth Always 0V

13 Earth Always 0V

14 Overdrive solenoid valve Selector lever position: D (3rd gear) Battery voltage

Selector lever position: P Approx. 7 - 9 V

15 Damper clutch control solenoid Selector lever position: L (1st gear) Battery voltage

valve

Selector lever position: 3 (50 km/h in 3rd gear) Other than

battery voltage

16 Second solenoid valve Selector lever position: 2 (2nd gear) Battery voltage

Selector lever position: P Approx. 7 - 9 V

23 Diagnosis control - -

24 Power supply Ignition switch: OFF 0V

Ignition switch: ON Battery voltage

25 Earth Always 0V

AUTOMATIC TRANSMISSION -

Troubleshooting

23-41

Terminal No.

26 Earth Always 0V

31 Input shaft speed sensor Measure between terminal No. 31 and No. 43 by

an oscilloscope. Engine: 2,000 r/min Selector lever position: 3

32 Output shaft speed sensor Measure between terminal No. 32 and No. 43 by

an oscilloscope. Engine: 2,000 r/min Selector lever position: 3

33 Crank angle sensor Engine: Idling 2.0 - 2.4 V

38 Back up power supply Ignition switch: OFF Battery voltage

43 Sensor earth Always 0V

44 Oil temperature sensor ATF temperature: 25 _C 3.8 - 4.0 V

ATF temperature: 80 _C 2.3 - 2.5 V

45 Throttle position sensor (TPS)

<4G93> Accelerator pedal position sensor

(APS) <4G64>

Accelerator pedal: Released (Engine stopped) 0.5 - 1.0 V

Accelerator pedal: Depressed (Engine stopped) 4.5 - 5.0 V

Standard valueCheck requirementCheck item

Refer to P.23-43, Oscilloscope inspection procedure.

53 Communication with engine-ECU Engine: Idling

Selector lever position: D

54 Communication with engine-ECU Engine: Idling

Selector lever position: D

55 Inhibitor switch P Selector lever position: P Battery voltage

Selector lever position: Other than above 0V

56 Inhibitor switch N Selector lever position: N Battery voltage

Selector lever position: Other than above 0V

57 Inhibitor switch 3 Selector lever position: 3 Battery voltage

Selector lever position: Other than above 0V

58 Inhibitor switch L Selector lever position: L Battery voltage

Selector lever position: Other than above 0V

59 Stop lamp switch Brake pedal: Depressed Battery voltage

Brake pedal: Released 0V

62 Low and reverse solenoid valve Selector lever position: D (1st gear) Battery voltage

Other than 0 V

Selector lever position: D (2nd gear) Approx. 7 - 9 V

63 Diagnosis output Normal (No diagnosis code output) 0 ® 5 V flashing

23-42

AUTOMATIC TRANSMISSION -

Troubleshooting

Terminal No.

65 Wide open throttle switch Accelerator pedal: Released 4.5 - 5.5 V

Accelerator pedal: Depressed Less than 0.4 V

66 Inhibitor switch R Selector lever position: R Battery voltage

Selector lever position: Other than above 0V

67 Inhibitor switch D Selector lever position: D Battery voltage

Selector lever position: Other than above 0V

68 Inhibitor switch 2 Selector lever position: 2 Battery voltage

Selector lever position: Other than above 0V

69 Vehicle speed sensor When stopped 0V

Move forward slowly 0 ® 5 V flashing

71 A/T control relay Ignition switch: OFF 0V

Ignition switch: ON Battery voltage

72 Earth Ignition switch: ON 0V

Standard valueCheck requirementCheck item

AUTOMATIC TRANSMISSION -

Troubleshooting

23-43

OSCILLOSCOPE INSPECTION PROCEDURE

23100850132

Check item Check requirement Normal condition

(Waveform sample)

Crank angle sensor Selector lever position: N Idling (Vehicle stopped) Waveform A

Input shaft speed sensor

Selector lever position: 3 Driving at constant speed of 50

km/h in 3rd gear

Waveform B

(Engine: 1,800 - 2,100 r/min) Output shaft speed sensor

Vehicle speed sensor

Low reverse solenoid valve

Underdrive solenoid valve

Second solenoid valve

Ignition switch: ON Selector lever position: P Engine: 0 r/min Vehicle speed: 0 km/h

(Vehicle stopped)

(Vehicle stopped) Throttle (Accelerator) opening

angle: Less than 1 V

Force drive each solenoid valve

(Actuator test)

Waveform C

Overdrive solenoid valve

Damper clutch control solenoid valve

Waveform sample

Waveform A

(V)

(ms)

Waveform B

(V)

(ms)

Waveform C

(V)

(ms)

23-44

AUTOMATIC TRANSMISSION -

On-vehicle Service

ON-VEHICLE SERVICE

23100090374

ESSENTIAL SERVICE

AUTOMATIC TRANSMISSION FLUID CHECK Caution

When the transmission has been replaced or overhauled, ordrivinghas been carried out under the severe condition, the transmission fluid cooler line flushing should always be carried out and also, the transmission fluid and oil filters (special filtersfortransmission only) shouldalways be replaced.

1. Drive the vehicle until the fluid temperature rises to the normal temperature (70 - 80_C).

2. Park the vehicle on a level surface.

3. Move the selector lever through all positions to fill the torque converter and the hydraulic circuits with fluid, and then move the selector lever to the N position.

4. After wiping off any dirt around the oil level gauge, remove the oil level gauge and check the condition of the fluid.

NOTE If the fluid smells as if it is burning, it means that the fluid has been contaminated by the particles from the bushes an d friction materials, a transmission overhaul and flushing the cooler line may be necessary.

5. Check that the fluid level is at the HOT mark on the oil level gauge. If the fluid level is lower than this, pour in more fluid until the level reaches the HOT mark.

Automatic transmission fluid: Dia Queen ATF SP

NOTE If the fluid level is low, the oil pump will draw in air along with the fluid, which will cause bubbles to form inside the hydraulic circuit. This will in turn cause the hydraulic pressure to drop, which will result in late shifting and slipping of the clutches and brakes. If there is too much fluid, the gears can churn it up into foam an d cause the same conditions that can occur with low fluid levels. In either case, air bubbles can cause overheating and oxidation of the fluid which can interfere with normal valve, clutch, and brake operation. Foaming can also result in fluid escaping from the transmission vent, in which case it may be mistaken for a leak.

6. Securely insert the oil level gauge.

II,

ATF SP

II M

or equivalent

AUTOMATIC TRANSMISSION -

AUTOMATIC TRANSMISSION FLUID REPLACEMENT

Caution When the transmission has been replaced or overhauled, the transmission fluid cooler line flushing should always be carried out before installing the transmission fluid cooler hose.

If you have a fluid changer, use this changer to replace the fluid. If you do not have a fluid changer, replace the fluid by the following procedure.

1. Disconnect the hose shown in the illustration which connects the transmission and the oil cooler (inside the radiator).

2. Start the engine and let the fluid drain out.

Running conditions: N range with engine idling Caution

The engine should be stopped within one minute after it is started. If the fluid has all drained out before then, the engine should be stopped at that point.

Discharge volume: Approx. 3.5 L

On-vehicle Service

23-45

23100100411

3. Remove the drain plug from the bottom of the transmission case to drain th e fluid.

Discharge volume: Approx. 2.0 L

4. Replace the oil filters. (Refer to P.23-47.)

5. Install the drain plug via a new gasket, and tighten it to the specified torque.

Tightening torque: 32 Nm

6. Pour the new fluid in through the oil filler tube.

Adding volume: Approx. 5.5 L Caution

Stop pouring if the full volume of fluid cannot be poured in.

7. Repeat the procedure in step 2.

NOTE Drain the fluid from the cooler hose 7 lit. at least. Then drain the fluid a little and check the fluid for dirt. If it has been contaminated, repeat the steps 6 and 7.

8. Pour the new fluid in through the oil filler tube.

Adding volume: Approx. 3.5 L

23-46

AUTOMATIC TRANSMISSION -

9. Reconnect the hose which was disconnected in step 1 above, and firmly replace the oil level gauge.

10. Start the engine and run it at idle for 1 - 2 minutes.

11. Move the selector lever through all positions, and then move it to the N position.

12. Check that the fluid level is at the COLD mark on the oil level gauge. If the level is lower than this, pour in more fluid.

13. Drive the vehicle until the fluid temperature rises to the normal temperature (70 - 80_C), and then check the fluid level again. The fluid level must be at the HOT mark.

NOTE The COLD level is for reference only; the HOT level should be regarded as the standard level.

On-vehicle Service

14. Firmly insert the oil level gauge into the oil filler tube.

AUTOMATIC TRANSMISSION FLUID COOLER LINE FLUSHING

Caution When the transmission has been replaced or overhauled, or automatic transmission fluid is contaminated, the transmission fluid cooler line flushing should always be carried out.

1. Disconnect the hose shown in the illustration which connects the transmission and the oil cooler (inside the radiator).

2. Start the engine and let the fluid drain out.

23101300070

Caution The engine should be stopped within one minute after it is started. If the fluid has all drained out before then, the engine should be stopped at that point.

Discharge volume: Approx. 3.5 L

AUTOMATIC TRANSMISSION -

3. Pour the new fluid in through the oil filler tube.

Adding volume: Approx. 3.5 L Caution

Stop pouring if the 3.5 lit. of fluid cannot be poured in.

4. Repeat the procedure in step 2.

NOTE Drain the fluid from the cooler hose 7.0 lit. at least i step

2. Then drain the fluid a little and check the fluid for dirt. If it has been contaminated, repeat steps 3 and 4.

5. Follow the automatic transmission fluid replacement procedure from step 3.

On-vehicle Service

23-47

MB991610

Apply ATF to O-ring

OIL FILTER REPLACEMENT

23101050111

1. Use the special tool (MB991610) to remove the automatic transmission oil filter.

2. Clean the filter bracket side mounting surface.

3. Apply a small amount of automatic transmission fluid to the O-ring of the new oil filter.

4. Use the special tool (MB991610) to install the automatic transmission oil filter.

NOTE Tightening torque: 12 Nm

5. Check the quantity of the automatic transmission fluid. (Refer to P.23-44.)

THROTTLE POSITION SENSOR ADJUSTMENT <4G93>

23100190210

Refer to GROUP 13B - On-vehicle Service.

ACCELERATOR PEDAL POSITION SENSOR ADJUSTMENT <4G64>

23100250062

Refer to GROUP 13A - On-vehicle Service.

23-48

AUTOMATIC TRANSMISSION -

On-vehicle Service

Inhibitor switch

INHIBITOR SWITCH CONTINUITY CHECK

Items

Terminal No.

23100140475

1 2 3 4 5 6 7 8 9 10

Transmission control cable

Manual control lever

Adjusting nut

INHIBITOR SWITCH AND CONTROL CABLE ADJUSTMENT

23100150201

1. Set the selector lever to the “N” position.

2. Loosen the control cable to manual control lever coupling nut to free the cable and lever.

3. Set th e manual control lever to the neutral position.

AUTOMATIC TRANSMISSION -

On-vehicle Service

23-49

Hole in flange

10 - 12 Nm

Manual control lever

Section A-A

Hole in end

Adjusting nut

Mounting bolts

Manual control lever

Inhibitor switch body

12 Nm

4. Loosen the inhibitor switch body mounting bolts and the turn the inhibitor switch body so the hole in the end of the manual control lever and the hole (cross section A- A in the figure on the left) in the flange of the inhibitor switch body flange are aligned.

5. Tighten the inhibitor switch body mounting bolts to the specified torque. Be careful at this time that the position of the switch body is not changed.

6. Gently pull the transmission control cable in the direction of the arrow, and then tighten the adjusting nut.

7. Check that the selector lever is in the “N” position.

8. Check that each range on the transmission side operates and functions correctly for each position of the selector lever.

Manual control lever

23-50

AUTOMATIC TRANSMISSION -

On-vehicle Service

A/T CONTROL COMPONENT LOCATION

Name Symbol Name Symbol

Accelerator position sensor <4G64> A Oil temperature sensor F

A/T control relay E Output shaft speed sensor H

A/T-ECU K Shift indicator lamp J

Crank angle sensor B Solenoid valve F

Diagnosis connector N Stop lamp switch O

Dual pressure switch I Throttle position sensor <4G93> C

Engine-ECU L Vehicle speed sensor D

Inhibitor switch G

Input shaft speed sensor H

A B

Wide open throttle switch M

C D

23100860319

spot=GA

AUTOMATIC TRANSMISSION -

On-vehicle Service

23-51

A/T CONTROL COMPONENT CHECK

23100900134

CRANK ANGLE SENSOR CHECK

Refer to GROUP 13 - Troubleshooting

link=13100850034.

THROTTLE POSITION SENSOR CHECK <4G93>

23100390337

Refer to GROUP 13B - On-vehicle Servicelink=13100320030.

ACCELERATOR PEDAL POSITION SENSOR CHECK <4G64>

23100420067

Refer to GROUP 13A - On-vehicle Servicelink=13600430011.

OIL TEMPERATURE SENSOR CHECK

23100450196

1. Remove the oil temperature sensor.

Oil temperature sensor

ATF

2. Measure the resistance between terminals No. 1 and No. 2 of the oil temperature sensor connector.

Standard value:

Oil temperature (_C) Resistance (kW)

0 16.7 - 20.5

100 0.57 - 0.69

INHIBITOR SWITCH CHECK

23100140482

Refer to P.23A-48.

STOP LAMP SWITCH CHECK

23100910113

Refer to GROUP 35 - Brake Pedallink=35100890045.

VEHICLE SPEED SENSOR CHECK

23100460229

Refer to GROUP 54 - On-vehicle Servicelink=54300300019.

23-52

AUTOMATIC TRANSMISSION -

On-vehicle Service

A/T control relay

DUAL PRESSURE SWITCH CHECK

23100470185

Refer to GROUP 55 - On-vehicle Servicelink=55201040068.

WIDE OPEN THROTTLE SWITCH CHECK

23100890080

Refer to P.23-64.

A/T CONTROL RELAY CHECK

23100930119

1. Remove the A/T control relay.

2. Use jumper wires to connect A/T control relay terminal 2 to the battery (-) terminal and terminal 4 to the battery (+) terminal.

3. Check the continuity between terminal 1 and terminal 3 of the A/T control relay when the jumper wires are connected to and disconnected from the battery.

Overdrive solenoid valve

Low and reverse solenoid valve

Underdrive solenoid valve

Second solenoid valve

Damper clutch solenoid valve

Jumper wire Continuity between terminals No. 1

and No. 3

Connected Continuity

Disconnected No continuity

4. If there is a problem, replace the A/T control relay.

SOLENOID VALVE CHECK

23100940105

1. Remove the valve body cover.

2. Disconnect the connectors of each solenoid valve.

AUTOMATIC TRANSMISSION -

3. Measure the resistance between terminals 1 and 2 of each solenoid valve.

Standard value:

Name Resistance

Damper clutch solenoid valve 2.7 - 3.4

Low and reverse solenoid valve

Second solenoid valve

Underdrive solenoid valve

Overdrive solenoid valve

4. If the resistance is outside the standard value, replace the solenoid valve.

On-vehicle Service

23-53

(at 20_C)

Reverse clutch

Low-reverse brake

Underdrive clutch

Torque converter

TORQUE CONVERTER STALL TEST

23100540275

This test measures the maximum engine speed when the selector lever is at the D or R position and the torque converter stalls to test the operation of the torque converter, starter motor a nd one-way clutch operation a n d th e holding performance of the clutches and brakes in the transmission.

Caution Do not let anybody stand in front of or behind the vehicle while this test is being carried out.

1. Check the automatic transmission fluid level and temperature and the engine coolant temperature.

Fluid level: At the HOT mark on the oil level gauge

Fluid temperature: 80 - 100_C

Engine coolant temperature: 80 - 100_C

23-54

AUTOMATIC TRANSMISSION -

2. Check both rear wheels (left and right).

3. Pull the parking brake lever on, with the brake pedal fully depressed.

4. Start the engine.

5. Move the selector lever to th e D position, fully depress the accelerator pedal and take a reading of the maximum engine speed at this time.

Caution

1. The throttle should not be left fully open for any

more than eight seconds.

2. If carrying out the stall test two or more times,

move the selector lever to the N position and run the engine at 1,000 r/min to let the automatic transmission fluid cool down before carrying out

subsequent tests. Standard value Stall speed:

<4G93> 2,200 - 2,700 r/min

<4G64> 2,300 - 2,800 r/min

6. Move the selector lever to the R position and carry out the same test again.

Standard value

On-vehicle Service

Stall speed:

<4G93> 2,200 - 2,700 r/min <4G64> 2,300 - 2,800 r/min

TORQUE CONVERTER STALL TEST JUDGEMENT RESULTS

1. Stall speed is too high in both D and R ranges

D Low line pressure D Low & reverse brake slippage

2. Stall speed is too high in D range only D Underdrive clutch slippage

3. Stall speed is too high in R range only D Reverse clutch slippage

4. Stall speed too low in both D and R ranges

D Malfunction of torque converter D Insufficient engine output

AUTOMATIC TRANSMISSION -

On-vehicle Service

23-55

HYDRAULIC PRESSURE TEST

1. Warm up the engine until the automatic transmission fluid temperature is 80 - 100_C.

2. Jack up the vehicle so that the wheels are free to turn.

3. Connect the special tools (2,942 kPa oil pressure gauge [MD998330] and joints [MD998332, MD998900]) to each pressure discharge port.

4. Measure the hydraulic pressure at each port under the conditions given in the standard hydraulic pressure table, and check that the measured values are within the standard value ranges.

5. If a value is outside the standard range, correct the problem while referring to the hydraulic pressure test diagnosis table.

23100550285

sub=01

23-56

AUTOMATIC TRANSMISSION -

On-vehicle Service

STANDARD HYDRAULIC PRESSURE TEST

sub=02

<4G93>

Measurement condition Standard hydraulic pressure kPa

Selector lever position

P - 2,500 - - - 310 - 390 - 500 - 700

R Reverse 2,500 - 1,320 -

N - 2,500 - - - 310 - 390 - 500 - 700

D 1st gear 2,500 1,010 -

Shift position

2nd gear 2,500 1,010 -

3rd gear 2,500 590 - 690 - 590 - 690 - - 450 - 650

4th gear 2,500 - - 590 - 690 - 590 - 690 450 - 650

Engine speed (r/min)

Underdrive clutch pressure

1,050

Reverse clutch pressure

1,720

- - 1,010 -

- - - 1,010 -

Overdrive clutch pressure

- 1,320 -

Low and reverse brake pressure

1,720

1,050

Second brake pressure

- 500 - 700

1,050

Torque converter pressure

500 - 700

<4G64>

Measurement condition Standard hydraulic pressure kPa

Selector lever position

P - 2,500 - - - 260 - 340 - 500 - 700

R Reverse 2,500 - 1,320 -

N - 2,500 - - - 260 - 340 - 500 - 700

D 1st gear 2,500 1,010 -

Shift position

2nd gear 2,500 1,010 -

3rd gear 2,500 780 - 880 - 780 - 880 - - 450 - 650

4th gear 2,500 - - 780 - 880 - 780 - 880 450 - 650

Engine speed (r/min)

Underdrive clutch pressure

1,050

Reverse clutch pressure

1,720

- - 1,010 -

- - - 1,010 -

Overdrive clutch pressure

- 1,320 -

Low and reverse brake pressure

1,720

1,050

Second brake pressure

- 500 - 700

1,050

Torque converter pressure

500 - 700

AUTOMATIC TRANSMISSION -

On-vehicle Service

23-57

HYDRAULIC PRESSURE TEST DIAGNOSIS TABLE

Trouble symptom Probable cause

All hydraulic pressures are high.

All hydraulic pressures are low.

Hydraulic pressure is abnormal in “R” range only.

Hydraulic pressure is abnormal in “3” or “4” range only .

Incorrect transmission control cable adjustment

Malfunction of the regulator valve

Incorrect transmission control cable adjustment

Malfunction of the oil pump

Clogged internal oil filter

Clogged external oil filter

Clogged oil cooler

Malfunction of the regulator valve

Malfunction of the relief valve

Incorrect valve body installation

Malfunction of the regulator valve

Clogged orifice

Incorrect valve body installation

Malfunction of the overdrive solenoid valve

Malfunction of the overdrive pressure control valve

sub=03

Only underdrive hydraulic pressure is abnormal.

Only reverse clutch hydraulic pressure is abnormal.

Malfunction of the regulator valve

Malfunction of the switch valve

Clogged orifice

Incorrect valve body installation

Malfunction of the oil seal K

Malfunction of the oil seal L

Malfunction of the oil seal M

Malfunction of the underdrive solenoid valve

Malfunction of the underdrive pressure control valve

Malfunction of check ball

Clogged orifice

Incorrect valve body installation

Malfunction of the oil seal A

Malfunction of the oil seal B

Malfunction of the oil seal C

Clogged orifice

Incorrect valve body installation

23-58

Trouble symptom Probable cause

AUTOMATIC TRANSMISSION -

On-vehicle Service

Only overdrive hydraulic pressure is abnormal.

Only low and reverse hydraulic pressure is abnormal.

Malfunction of the oil seal D

Malfunction of the oil seal E

Malfunction of the oil seal F

Malfunction of the overdrive solenoid valve

Malfunction of the overdrive pressure control valve

Malfunction check ball

Clogged orifice

Incorrect valve body installation

Malfunction of the oil seal I

Malfunction of the oil seal J

Malfunction of the low and reverse solenoid valve

Malfunction of the low and reverse pressure control valve

Malfunction of the switch valve

Malfunction of the fail safe valve A

Malfunction of check ball

Clogged orifice

Only second hydraulic pressure is abnormal.

Only torque converter pressure is abnormal.

Incorrect valve body installation

Malfunction of the oil seal G

Malfunction of the oil seal H

Malfunction of the oil seal O

Malfunction of the second solenoid valve

Malfunction of the second pressure control valve

Malfunction of the fail safe valve B

Clogged orifice

Incorrect valve body installation

Malfunction of the oil cooler

Malfunction of the oil seal N

Malfunction of the damper clutch control solenoid valve

Malfunction of the damper clutch control valve

Malfunction of the torque converter pressure control valve

Clogged orifice

Incorrect valve body installation

Pressure applied to non operating element.

Incorrect transmission control cable adjustment

Malfunction of the manual valve

Malfunction of check ball

Incorrect valve body installation

AUTOMATIC TRANSMISSION -

On-vehicle Service

23-59

OIL SEAL LAYOUT

sub=04

23-60

AUTOMATIC TRANSMISSION -

On-vehicle Service

HYDRAULIC CIRCUIT

PARKING AND NEUTRAL

12 3 4 5

666

910

17 18

23100880193

30 32

1. Reverse clutch

2. Low-reverse brake

3. Second brake

4. Underdrive clutch

5. Overdrive clutch

6. Accumulator

7. Check ball

8. Damper clutch

9. Fail safe valve A

10. Fail safe valve B

11. Damper clutch control valve

12. Switch valve

13. Automatic transmission fluid cooler

14. Lubrication

15. Low-reverse pressure control valve

16. Second pressure control valve

17. Underdrive pressure control valve

RND

2 L

18. Overdrive pressure control valve

19. Damper clutch control solenoid valve

20. Low-reverse solenoid valve

21. Second solenoid valve

22. Underdrive solenoid valve

23. Overdrive solenoid valve

24. Torque converter pressure control valve

25. Regulator valve

26. Manual valve

27. Oil filter

28. Oil pump

29. Oil strainer

30. Oil filter (Built in type)

31. Relief valve

32. Oil pan

AUTOMATIC TRANSMISSION -

On-vehicle Service

23-61

Adjusting screw

Turn the ignition switch to any position other than “LOCK”, and operate the selector lever with the brake pedal depressed and the push button pushed.

LINE PRESSURE ADJUSTMENT

23100170177

1. Discharge the automatic transmission fluid, and then remove the valve body cover.

2. Turn the adjusting screw shown in the illustration at left to adjust the underdrive pressure to the standard value. The pressure increases when the screw is turned to the left.

NOTE When adjusting the underdrive pressure, adjust to the middle of the standard value range.

Standard value: 1,010 - 1,050 kPa

Change in pressure for each turn of the adjusting screw: 35 kPa

3. Install the valve body cover, and pour in the standard volume of automatic transmission fluid.

4. Carry out a hydraulic pressure test. (Refer to P.23-55.) Readjust the line pressure if necessary.

SELECTOR LEVER OPERATION CHECK

23100130243

1. Shift selector lever to each range and check that lever moves smoothly and is controlled. Check that position indicator is correct.

2. Check the selector lever can be moved to each position (by button operation as shown in the illustration).

3. Start the engine and check if the vehicle moves forward when the selector lever is moved from N or D, and moves backward when moved to R.

4. When the shift lever malfunctions, adjust control cable and selector lever sleeve. Check for worm shift lever assembly sliding parts.

Operate the selector lever without pushing the push button.

Operate the selector lever with the push button pushed.

23-62

AUTOMATIC TRANSMISSION -

On-vehicle Service

KEY INTERLOCK AND SHIFT LOCK SYSTEM CHECK

1. Carry out the following inspection:

Inspection procedure

1 Brake pedal:

2 Turn the ignition key to

3 Brake pedal:

4 Selector lever: “P” The ignition key can be turned to “LOCK.”

Requirements Normal condition

Depressed

Not depressed

Turn the ignition key to “LOCK”, or remove it.

“ACC.”

Selector lever: Other than “P”

The selector lever push button can not be pushed, and the selector lever should not be moved from “P” position.

The selector lever push button can be pushed, and the selector lever can be moved from “P” position.

The ignition key can not be turned to “LOCK” position.

Inspection procedure

1 Brake pedal:

2 Brake pedal:

Requirements Normal condition

Not depressed

Depressed

Turn the ignition key to “ACC.”

The selector lever push button can not be pushed, and the selector lever should not be moved from “P” position.

The selector lever push button can be pushed, and the selector lever can be moved from “P” position.

3 Brake pedal:

Not depressed

The selector lever push button can be pushed, and the selector lever can be moved from “R” position to “P” position.

2. If there is a problem on the inspection above, replace the key interlock and shift lock cable assembly.

AUTOMATIC TRANSMISSION -

Transmission Control

23-63

TRANSMISSION CONTROL

23100660247

REMOVAL AND INSTALLATION

Caution: SRS Be careful not to subject the SRS-ECU to any shocks during removal and installation of the transmission control cable, the key interlock cable, the selector lever assembly or the A/T-ECU.

Pre-removal and Post-installation Operation

D Air Cleaner Assembly Removal and Installation (Refer

to GROUP 15).

D Battery and Battery Tray Removal and Installation

D Operation Check of Instruments <after installation

only>

Section A - A

1.5 Nm

12 Nm

NOTE

: indicate the clip location.

Transmission control cable removal steps

1. Shift knob

2. Indicator panel

Centre console removal and installa-

"AA

tion (Refer to GROUP 52A.)

3. Nut

4. Adjuster

5. Transmission control cable connection

6. Key interlock and shift lock cable

7. Selector lever assembly

8. Transmission control cable assembly

12 Nm

5Nm

Selector lever assembly removal steps

1. Shift knob

2. Indicator panel

Centre console removal and installation (Refer to GROUP 52A.)

5. Transmission control cable connection

6. Key interlock and shift lock cable

7. Selector lever assembly

A/T-ECU removal

9. A/T-ECU

Wide open throttle switch removal

10. Wide open throttle switch

23-64

AUTOMATIC TRANSMISSION -

Transmission Control

Manual transmission control cable

Manual control lever

Adjusting nut

OFF ON

INSTALLATION SERVICE POINT

"AA

1. Put the selector lever in the “N” position and the manual

2. Install the transmission control cable, and tighten the

INSPECTION

WIDE OPEN THROTTLE SWITCH CHECK

NUT INSTALLATION

control lever in neutral position.

adjusting nut.

Switch position

OFF

Terminal No.

1 2

23100890097

AUTOMATIC TRANSMISSION -

SELECTOR LEVER ASSEMBLY DISASSEMBLY AND REASSEMBLY

Transmission Control

23-65

9Nm

2.5 Nm

12 Nm

Disassembly steps

1. Lever assembly

2. Bracket

3. Snap ring

4. Sleeve

5. Lever sub-assembly

6. Bushing

7. Detent spring

9Nm

8. Lock cam

9. Stopper

10. Base bracket

11. Stay

12. Lever mount bracket

13. Base bracket

23-66

AUTOMATIC TRANSMISSION -

Shift Lock and Key Interlock Mechanisms

SHIFT LOCK AND KEY INTERLOCK MECHANISMS

23100660247

REMOVAL AND INSTALLATION

Caution: SRS Be careful not to subject the SRS-ECU to any shocks during removal and installation of the key interlock cable or shift lock cable.

Pre-removal and Post-installation Operation

D Shift Knob, Indicator Panel Removal and Installation

(Refer to P.23-63.)

D Center Console Removal and Installation

(Refer to GROUP 52A.)

5Nm

"BA

Removal steps

1. Key interlock and shift lock cable connection <Selector lever side>

Lower column cover (Refer to GROUP 37A - Steering Wheel and Shaft.)

2. Cover

3. Key interlock cable connection <Steering lock cylinder side>

4. Snap pin

5. Shift lock cable connection <Brake pedal side>

"AA

6. Key interlock cable

7. Upper case

8. Rod

9. Lever

10. Lower case

11. Shift lock cable

ETACS-ECU removal

12. ETACS-ECU

AUTOMATIC TRANSMISSION -

Shift Lock and Key Interlock Mechanisms

23-67

Key interlock cable

Outer cap

View A

Unlock

Lock

Shift lock cable

Lock piece

Inner cable

Mounting bolts

Lock piece

Rod

INSTALLATION SERVICE POINTS

"AA

1. After assembling the shift lock cable to the lever, pull

2. Push in the lock piece to lock while the key interlock

"BA

Engage the rod end into the lever lock cam, and then check that the selector lever is at “P” position. Then tighten the key interlock and shift lock cable with mounting bolts while pulling the rod towards the arrow direction gently.

KEY INTERLOCK CABLE INSTALLATION

up the key interlock cable lock piece to unlock. Then install the interlock cable end to the cam, and then install the outer cap to the lower case.

inner cable is straightened.

KEY INTERLOCK AND SHIFT LOCK CABLE INSTALLATION

Key interlock cable

Cam

23-68

AUTOMATIC TRANSMISSION -

Transmission Assembly

TRANSMISSION ASSEMBLY

23100570274

REMOVAL AND INSTALLATION

Caution The fasteners indicated by * should be tightened to the specified torque after the engine weight is applied to the vehicle body.

Pre-removal Operation

D Carry out the essential service for the troubleshooting

<before removal only> (Refer to P.23-44.)

D Transmission Fluid Draining and Refilling <Refill the

Fluid before Starting the Engine> (Refer to P.23-45.)

D Engine Cover Removal and Installation D Air Cleaner Assembly Removal and Installation D Battery and Battery Tray Removal and Installation D Radiator and Reservoir Removal and Installation

(Refer to GROUP 14.)

D Starter Removal and Installation (Refer to GROUP

16.)

D Under Cover Removal and Installation D Front exhaust pipe Removal and Installation

(Refer to GROUP 15.)

D Check the Dust Cover for Cracks or Damage by

Pushing it with Finger. <after installation only>

D Selector Lever Operation Check <after installation

only>

D Operation Check of Instruments <after installation

only>

D Wheel Alignment Check and Adjustment

(Refer to GROUP 33A - On-vehicle Service.)

12 Nm

24 - 34 Nm

Removal steps

1. Transmission control cable connection

2. Transmission fluid cooler hose connection

3. Bolt

4. Input shaft speed sensor connector

5. Output shaft speed sensor connector

6. A/T control solenoid valve assembly connector

69 Nm

48 Nm

AA" AB"

12 Nm

69 Nm

12 Nm

7. Vehicle speed sensor connector

8. Tie rod end connection

9. Steering gear and linkage mounting bolts

10. Oil line connecting bolt

11. Transmission assembly upper connecting bolt

AUTOMATIC TRANSMISSION -

57 Nm*

Transmission Assembly

23-69

39 Nm

196 - 225 Nm

81 Nm*

98 - 118Nm

49 - 64 Nm*

9Nm

49 - 64 Nm*

48 Nm

44 Nm

22 Nm

45 - 52 Nm

177 Nm

12. Stabilizer link connection

"CA 13. Lower arm connection

14. Vehicle speed sensor connection <Vehicles with ABS>

AC" 15. Drive shaft connection <LH> AC" 16. Drive shaft connection <RH>

17. Transmission stay

18. Bell housing cover

19. Drive plate mounting bolt

20. Front roll stopper connection

21. Rear roll stopper connection

177 Nm

78 Nm

22. Stay

23. Front member assembly

AD" 24. Transmission mount bracket

"BA 25. Transmission mount stopper

AE"DEngine and transmission assembly

supporting

AF" 26. Transmission assembly lower part

coupling bolts

AF""AA 27. Transmission assembly

23-70

MB990635 or MB991113

Ball joint

Nut

AUTOMATIC TRANSMISSION -

REMOVAL SERVICE POINTS

Cord

AA"

Caution

1. Use thespecial tool to loosen the tie rodend mounting

2. Support the special tool with a cord, etc. not to let

TIE ROD END DISCONNECTION

nut. Only loosen the nut; do not remove it from the ball joint.

it come off.

Transmission Assembly

Prybar

Projection

Drive shaft

Transmission case

Hammer

AB"

STEERING GEAR AND LINKAGE MOUNTING BOLT REMOVAL

Remove the steering gear and linkage mounting bolts, and then support the steering gear box to the vehicle body with a wire.

AC"

DRIVE SHAFT DISCONNECTION

1. Position a hammer under the projection, and then use a prybar to pry the drive shaft from the transfer case.

Caution (1) Always use a pry bar to withdraw the drive shaft.

Pulling out the drive shaft forcibly from the B.J. assembly may damage the T.J. assembly.

(2) Be careful not to damage the oil seal of the

transmission or transfer by the spline of the drive shaft.

2. Suspend the removed drive shaft with a wire to a nearby part so that there are no sharp bends in any of the joints.

3. Use a shop towel to cover the transmission case not to let foreign material get into it.

MB991453

MZ203827

AD"

TRANSMISSION MOUNT BRACKET REMOVAL

Carefully lower the transmission assembly with a garage jack, and remove the transmission mount bracket.

AE"

ENGINE AND TRANSMISSION ASSEMBLY SUPPORTING

Set the special tool to the vehicle to support the engine and transmission assembly.

AUTOMATIC TRANSMISSION -

Transmission Assembly

23-71

Engine side

Transmission mount bracket

12.2 mm

Weld nut

Transmission mount stopper

AF"

TRANSMISSION ASSEMBLY LOWER PART COUPLING BOLTS/TRANSMISSION ASSEMBLY REMOVAL

1. Support the transmission assembly with a transmission jack.

2. Push the torque converter into the transmission case until the torque converter does not remain at the engine side.

3. Remove t he transmission assembly lower part coupling bolts, and lower the transmission assembly to remove.

INSTALLATION SERVICE POINTS

"AA

Push the torque converter into the transmission case as shown, and then install the engine to the transmission assembly.

"BA

Install the transmission mount stopper so that the arrow points as shown in the illustration.

NOTE Disregard F and R stamped as a shared part.

TRANSMISSION ASSEMBLY INSTALLATION

TRANSMISSION MOUNT STOPPER INSTALLATION

Knuckle

Lower arm assembly

"CA

LOWER ARM INSTALLATION

1. Install the lower arm assembly to the knuckle.

Caution The lower arm should not protrude 4 mm or more from the knuckle end (A shown), otherwise grease may pour out from the dust cover.

2. If grease has poured out due to the excessive arm protrusion, the dust cover must be replaced (Refer to GROUP 33A - Lower Arm).

3. There should be not clearance between the knuckle and the dust cover.

NOTES

Mitsubishi AUTOMATIC TRANSMISSION SPECIFICATIONS

Specifications and Main Features

Frequently Asked Questions

User Manual

SERVICE SPECIFICATIONS

LUBRICANT

SPECIAL TOOLS

Troubleshooting

On-vehicle Service

Shift Lock and Key Interlock Mechanisms

Transmission Assembly