Mitsubishi Outlander GS45X. Manual - part 1730

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

AUTOMATIC TRANSAXLE

23C-225

STEP 2. M.U.T.-III diagnostic trouble code.
Check the engine diagnostic trouble code. (Refer to GROUP 
13B 

−Troubleshooting 

P.13B-50

).

Q: Is the diagnostic trouble code set?

YES : Perform the relevant troubleshooting.
NO :  Go to Step 3.

STEP 3. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0100 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 4.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 4. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0100 set?

YES : Return to Step 1.
NO :  This diagnosis is complete.

Code No.U0101: Transaxle Time-out Error

CAUTION

• If there is any problem in the CAN bus lines, 

an incorrect diagnostic trouble code may be 
set. Prior to this diagnosis, diagnose the CAN 
bus lines.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

.

OPERATION

AWC-ECU communicates with TCM via the CAN bus 
lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

The code is set when the signal sent from the TCM 
cannot be received for a certain period.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of power supply circuit system (TCM)

• Malfunction of ECU (TCM)

• Malfunction of AWC-ECU

• ETACS coding failure (coding of A/T specification 

for a vehicle with M/T specification)

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use scan tool to perform the CAN bus diagnosis.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus lines. (Refer to GROUP 54C 

− 

Troubleshooting 

P.54C-17

).

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

AUTOMATIC TRANSAXLE

23C-226

STEP 2. M.U.T.-III diagnostic trouble code.
Check the A/T diagnostic trouble code. (Refer to 

P.23C-164

).

Q: Is the diagnostic trouble code set?

YES : Perform the relevant troubleshooting.
NO :  Go to Step 3.

STEP 3. ETACS-ECU coding data check.
Check the Transaxle coding data stored in ETACS-ECU for any 
abnormality. (Refer to GROUP 00 

− Coding Reference Table 

P.00-44

).

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Replace the ETACS-ECU. (Refer to GROUP 54A 

− 

ETACS-ECU 

P.54A-825

). Then go to Step 5.

STEP 4. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0101 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 5.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 5. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0101 set?

YES : Return to Step 1.
NO :  This diagnosis is complete.

Code No.U0121: ASC Time-out Error

CAUTION

• If there is any problem in the CAN bus lines, 

an incorrect diagnostic trouble code may be 
set. Prior to this diagnosis, diagnose the CAN 
bus lines.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

.

OPERATION

AWC-ECU communicates with the ASC-ECU via the 
CAN bus lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

The code is set when the signal sent from the 
ASC-ECU cannot be received for a certain period.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of power supply circuit system 

(ASC-ECU)

• Malfunction of ECU (ASC-ECU)

• Malfunction of AWC-ECU

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

AUTOMATIC TRANSAXLE

23C-227

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use scan tool to perform the CAN bus diagnosis.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus lines. (Refer to GROUP 54C 

− 

Troubleshooting 

P.54C-17

).

STEP 2. M.U.T.-III diagnostic trouble code.
Check the ASC diagnostic trouble code. (Refer to GROUP 35C 
− Troubleshooting 

P.35C-18

).

Q: Is the diagnostic trouble code set?

YES : Perform the relevant troubleshooting.
NO :  Go to Step 3.

STEP 3. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0121 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 4.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 4. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0121 set?

YES : Return to Step 1.
NO :  This diagnosis is complete.

Code No.U0126: Steering Wheel Sensor Time-out Error

CAUTION

• If there is any problem in the CAN bus lines, 

an incorrect diagnostic trouble code may be 
set. Prior to this diagnosis, diagnose the CAN 
bus lines.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

• When the steering wheel sensor is replaced, 

calibrate the steering wheel sensor (Refer to 
GROUP 35C 

− On-vehicle Service 

P.35C-283

), 

and reset the steering wheel sensor correc-
tion amount stored in the AWC-ECU. (Item No. 
1: SAS adjusted value 

P.23C-256

).

.

OPERATION

AWC-ECU communicates with the steering wheel 
sensor via the CAN bus lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

The code is set when the signal sent from the steer-
ing wheel sensor cannot be received for a certain 
period.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of power supply circuit system (steer-

ing wheel sensor)

• Malfunction of the steering wheel sensor

• Malfunction of AWC-ECU

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

AUTOMATIC TRANSAXLE

23C-228

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use scan tool to perform the CAN bus diagnosis.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the CAN bus lines. (Refer to GROUP 54C 

− 

Troubleshooting 

P.54C-17

).

STEP 2. M.U.T.-III data list.
Item No.8: Steering angle sensor (refer to 

P.23C-254

).

Q: Is the check result normal?

YES : Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

NO :  Replace the steering wheel sensor. (Refer to GROUP 

35C 

− Steering Wheel Sensor 

P.35C-291

). Then go to 

Step 3.

STEP 3. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0126 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 4.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 4. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0126 set?

YES : Return to Step 1.
NO :  This diagnosis is complete.

Code No.U0141: ETACS Time-out Error

CAUTION

• If there is any problem in the CAN bus lines, 

an incorrect diagnostic trouble code may be 
set. Prior to this diagnosis, diagnose the CAN 
bus lines.

• Whenever the ECU is replaced, ensure that 

the CAN bus lines are normal.

.

OPERATION

AWC-ECU communicates with the ETACS-ECU via 
the CAN bus lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

The code is set when the signal sent from the 
ETACS-ECU cannot be received for a certain period.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of power supply circuit system 

(ETACS-ECU)

• Malfunction of ECU (ETACS-ECU)

• Malfunction of AWC-ECU