Mitsubishi Outlander GS45X. Manual - part 1732

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-233

STEP 5. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0431 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 6.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 6. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U0431 set?

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

Code No.U1415: Coding incomplete/fail

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 diagnostic trouble code No.U1415 

is set in AWC-ECU, the diagnostic trouble 
code may also be set in ETACS-ECU. When 
the diagnostic trouble code is set in 
ETACS-ECU, perform the diagnosis of the 
diagnostic trouble code for ETACS-ECU first.

.

OPERATION

AWC-ECU receives the vehicle information stored in 
ETACS-ECU via CAN bus lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

The code is set when the AWC-ECU coding has not 
been performed.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Coding not implemented

• ETACS-ECU malfunction

• Malfunction of AWC-ECU

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 ETACS diagnostic trouble code. (Refer to GROUP 
54A 

− Troubleshooting 

P.54A-732

).

Q: Is the diagnostic trouble code set?

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

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-234

STEP 3. ETACS-ECU coding data check
Using the M.U.T.-III, check if there is any abnormality to the 
coding data stored in the ETACS-ECU. (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.U1415 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.U1415 set?

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

Code No.U1417: Coding Data Malfunction

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 communication circuit is normal.

• When the diagnostic trouble code No.U1417 

is set in AWC-ECU, the diagnostic trouble 
code may also be set in ETACS-ECU. When 
the diagnostic trouble code is set in 
ETACS-ECU, perform the diagnosis of the 
diagnostic trouble code for ETACS-ECU first.

.

OPERATION

AWC-ECU receives the vehicle information stored in 
ETACS-ECU via CAN bus lines.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

The code is set when the vehicle information 
received from ETACS-ECU is not correct.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• ETACS-ECU malfunction

• Malfunction of AWC-ECU

• ETACS-ECU has been interchanged between 

two vehicles.

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-235

STEP 2. M.U.T.-III diagnostic trouble code.
Check the ETACS diagnostic trouble code. (Refer to GROUP 
54A 

− Troubleshooting 

P.54A-732

).

Q: Is the diagnostic trouble code set?

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

STEP 3. ETACS-ECU coding data check
Using the M.U.T.-III, check if there is any abnormality to the 
coding data stored in the ETACS-ECU. (Refer to GROUP 00 

− 

Coding Reference Table 

P.00-44

).

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Repair the coding data or replace ETACS-ECU. 

(Refer to GROUP 54A 

− ETACS-ECU 

P.54A-825

). 

Then go to Step 6.

STEP 4. Check the part number of ETACS-ECU
Check the part number of ETACS-ECU.
Q: Is the check result normal?

YES : Go to Step 5.
NO :  Replace the ETACS-ECU (Refer to GROUP 54A 

− 

ETACS-ECU 

P.54A-825

), and then go to Step 6.

STEP 5. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U1417 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 6.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 6. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U1417 set?

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

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-236

Code No.U1425: Transaxle Data Malfunction

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 abnormality is detected in the 
gear shift signal received from the TCM.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Malfunction of TCM

• Malfunction of AWC-ECU

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 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. M.U.T.-III data list.
Item No.15: A/T Gear position (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 :  Go to Step 4.

STEP 4. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.U1425 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.U1425 set?

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