Mitsubishi Outlander GS45X. Manual - part 1679

 

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Mitsubishi Outlander GS45X. Manual - part 1679

 

 

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-21

HOW TO DIAGNOSE THE CAN BUS LINES

Required Special Tools:

•  MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "CAN Bus Diagnosis" from the start-up screen.
4. When the vehicle information is displayed, confirm that it 

matches the vehicle whose CAN bus lines will be 
diagnosed.

• If they match, go to step 8.

• If not, go to step 5.

5. Select the "view vehicle information" button.
6. Enter the vehicle information and select the "OK" button.
7. When the vehicle information is displayed, confirm again 

that it matches the vehicle whose CAN bus lines will be 
diagnosed.

• If they match, go to step 8.

• If not, go to step 5.

8. Select the "OK" button.
9. When the optional equipment screen is displayed, choose 

the one which the vehicle is fitted with, and then select the 
"OK" button.

HOW TO INITIALIZE A/T LEARNED VALUE

M1231022600325

PURPOSE

A/T learned value must be reset whenever the auto-
matic transaxle, engine assembly, A/T valve body, or 
A/T solenoid valve is replaced. It cannot be reset by 
disconnecting the battery. Use the M.U.T.-III as fol-
lows:

INITIALIZATION PROCEDURE

1. Move the selector lever to the P range and turn 

the ignition switch to the LOCK (OFF) position. 
Then, connect scan tool to the data link connector.

2. Turn the ignition switch to the ON position, and 

then move the selector lever to the R range.

3. Depress the accelerator pedal while depressing 

the brake pedal. (Engine is not running.) Using 
the M.U.T.-III, execute the clear DTC function for 
the TCM (even if no codes are set). 

NOTE: Performing initialization of the learned value 
will also erase the diagnostic trouble code.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-22

FAIL-SAFE/BACKUP FUNCTION

M1231008300375

When a malfunction of a main sensor or actuator is 
detected by the PCM, the transaxle is controlled by 
pre-set control logic to maintain safe conditions for 
driving.
The following table shows how the fail-safe/backup 
function affects vehicle driveability and operation.

DTC code 
No.

Detection items

Fail-safe

P0703

Stoplight switch malfunction

• The lock-up operation range is shifted to 

the high speed side.

• Inter lock detection is prohibited.

P0705

Transmission range switch system

• Fixed at the D range.

• Manual mode is prohibited.

• Lock-up is prohibited.

P0712

Transmission fluid temperature sensor system 
(Short circuit)

Not present.

P0713

Transmission fluid temperature sensor system 
(Open circuit)

Fixed to 5th gear during driving, and to 3rd 
gear after a vehicle stop.

P0715

Input shaft speed sensor system

• Fixed to the driving gear position during 

driving, and to 3rd gear after a vehicle stop.

P0720

Output shaft speed sensor system

P0729

6th gear incorrect ratio

The current shift position is continued, and 
gear is fixed to 3rd gear after a vehicle stop.

P0731

1st gear incorrect ratio

• At engine runup detection: Fixed to 5th gear 

after a vehicle stop.

• At gear ratio abnormality detection: Fixed to 

2nd, 3rd, 4th gear.

P0732

2nd gear incorrect ratio

The current shift position is continued, and 
gear is fixed to 5th gear after a vehicle stop.

P0733

3rd gear ratio

The current shift position is continued, and 
gear is fixed to 6th gear after a vehicle stop.

P0734

4th gear incorrect ratio

The current shift position is continued, and 
gear is fixed to 3rd or 5th gear after a vehicle 
stop.

P0735

5th gear incorrect ratio

The current shift position is continued, and 
gear is fixed to 2nd gear after a vehicle stop.

P0736

Reverse gear incorrect ratio

Controlled by making the line pressure to 
maximum.

P0741

Torque converter clutch system (Stuck off)

Lock-up is prohibited.

P0742

Torque converter clutch system (Stuck on)

Lock-up is prohibited.

P0743

Lock-up and Low-reverse brake linear solenoid 
valve system

Fixed to 5th gear during driving and to 3rd 
gear after a vehicle stop.

P0748

Line pressure linear solenoid valve system

Controlled by making the line pressure to 
maximum.

P0753

Low clutch linear solenoid valve system

Fixed to 5th gear.

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

TSB Revision

AUTOMATIC TRANSAXLE

23C-23

*1

: Indicates the series of driving cycle "ignition key 

OFF 

→ ON → drive → OFF."

P0758

2-6 brake linear solenoid valve system

Fixed to 5th gear during driving, and to 3rd 
gear after a vehicle stop.

P0763

3-5 reverse clutch linear solenoid valve system Fixed to 5th gear during driving, and to 3rd 

gear after a vehicle stop.

P0768

High clutch linear solenoid valve system

Fixed to 5th gear.

P0815

Paddle shift switch (up) system

The manual mode operation during the driving 
cycle

*1

 in question is prohibited.

P0816

Paddle shift switch (down) system

The manual mode operation during the driving 
cycle

*1

 in question is prohibited.

P0826

Shift switch assembly system

The manual mode during the driving cycle

*1

 in 

question is prohibited.

P0846

2-6 brake pressure switch system

Control is continued with always switch on.

P0876

High clutch pressure switch system

Control is continued with always switch on.

P0893

Interlock detection

Fixed to a feasible shift position.

P0988

Low-reverse brake pressure switch system

Control is continued with always switch on.

P1705

Throttle position sensor information (engine)

• Controlled with the throttle position fixed to 

2/8 position.

• Lock-up is prohibited.

P1706

Accelerator pedal position information

• Controlled with the throttle position fixed to 

2/8 position.

• Lock-up is prohibited.

P1731

1st engine brake detection

The low-reverse brake is released.

P1753

Low clutch shift solenoid valve system

Not present.

P1758

Low-reverse brake shift solenoid valve system Fixed to 5th gear during driving, and to 3rd 

gear after a vehicle stop.

P1773

ABS Information (ASC)

The lock-up during the deceleration and when 
vehicle speed is 40 km/h (25 mph) or less is 
prohibited.

P1796

Idle neutral control

Idle neutral control is prohibited.

U0001

CAN bus off

Fixed to 5th gear during driving, and to 3rd 
gear after a vehicle stop.

U0100

ECM time out

Fixed to 5th gear during driving, and to 3rd 
gear after a vehicle stop.

U0121

ASC-ECU time out

No action

U0141

ETACS-ECU time out

Judges as brake ON, and continues control.

DTC code 
No.

Detection items

Fail-safe

AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>

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AUTOMATIC TRANSAXLE

23C-24

ROAD TEST

M1231007800979

This test is performed to make a proper judgment on 
the trouble symptom and check after completion of 
service work.
1. With the actual driving, check if there is any 

abnormality in transmission.

2. Check if there is any shift shock or abnormal 

sound.

3. Check the driving status with all the shift ranges 

including "R."

4. Perform the driving test with the reproduction 

condition which is investigated in the interview to 
check the failure occurrence.

.

P-range test

1. Stop the vehicle completely on an upslope at the 

gradient of 5

° to 10°, and then shift the selector 

lever to the "P" range. After that, release the foot 
brake gradually to check that the vehicle does not 
move.

2. With the status of the above Step 1, shift the 

selector lever from the "P" range to other ranges, 
and check that the vehicle moves.

3. Check the operation also on the downslope with 

the same manner.

.

Select time lag

CAUTION

• Perform the test with the engine fully warmed 

up and the idling speed being stable.

• On completion of the first test, when one 

minute or more has elapsed after the selector 
lever is returned from another position to the 
"N" range, perform the following tests.

1. Check the transmission fluid level and properties.
2. Check the transaxle control cable and linkage.
3. Chock the front and rear wheels on a level 

surface, and depress the foot brake to stop the 
vehicle.

4. Start the engine, and shift the selector lever from 

the "N" range to the "D" range. At this time, 
measure the time from the lever selection to 
shock occurrence using a stop watch.

Standard value: 

 select time lag: 0.8 sec-

onds

5. With the same manner, measure the select time 

from the "N" range to the "R" range.

Standard value: 

 select time lag: 0.8 sec-

onds

If the measured value is abnormally large exceeding 
one second, the operating hydraulic pressure reduc-
tion and the A/T internal clutch slippage are assumed 
to have occurred.

TORQUE CONVERTER STALL TEST

M1231005400629

This test measures the maximum engine speed 
when the selector lever is in the "D" position and the 
torque converter stalls. This tests the operation of the 
torque converter, stator and one-way clutch opera-
tion, as well as the holding performance of the 
clutches and brakes in the transaxle.

WARNING

Do not let anyone stand in front of or behind 
the vehicle while this test is performed.

1. Check the transmission fluid level and 

temperature. Check the engine coolant 
temperature.

• Transmission fluid level: At the "HOT" mark on 

the dipstick

• Transmission fluid temperature: 70 − 80°C (158 − 

176

°F)

• Engine coolant temperature: 80 − 100°C (176 − 

212

°F)

NOTE: Measure transmission fluid temperature 
with scan tool MB991958 (M.U.T.-III sub assem-
bly).

2. Chock both rear wheels.
3. Connect a tachometer.
4. Apply the parking and service brakes fully.
5. Start the engine.

 

 

 

 

 

 

 

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