Mitsubishi Outlander GS45X. Manual - part 1735

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

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STEP 13. Check the wiring harness between C-139 
AWC-ECU connector terminal No.16 and C-313 
ETACS-ECU connector terminal No.2.
Check the power supply line for short circuit.
Q: Is the check result normal?

YES : Replace the fuse No.12, No.17. Then go to Step 24.
NO :  Repair the wiring harness, and then replace the fuse 

No.12. Then go to Step 26   .

STEP 14. Voltage measurement at C-309 ETACS-ECU 
connector
Disconnect the connector, and measure the voltage between 
terminal No.1 and ground at the wiring harness side.

OK: Battery positive voltage

Q: Is the check result normal?

YES : Go to Step 16.
NO :  Go to Step 15.

STEP 15. ETACS-ECU connector check: C-309
Q: Is the check result normal?

YES : The short or open circuit may be present in the power 

supply circuit. Repair the wiring harness between the 
C-309 ETACS-ECU connector terminal No.1 and 
fusible link No.34. Then go to Step 26.

NO :  Repair the defective connector. Then go to Step 26.

STEP 16. Voltage measurement at C-317 ETACS-ECU 
connector
(1) Disconnect the connector, and measure the voltage 

between terminal No.6 and ground at the wiring harness 
side.

(2) Turn the ignition switch to the "ON" position.

OK: Battery positive voltage

Q: Is the check result normal?

YES : Go to Step 18.
NO :  Go to Step 17.

STEP 17. ETACS-ECU connector check: C-317
Q: Is the check result normal?

YES : The short or open circuit may be present in the power 

supply circuit. Repair the wiring harness between the 
C-317 ETACS-ECU connector terminal No.6 and 
ignition switch. Then go to Step 26.

NO :  Repair the defective connector. Then go to Step 26.

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

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STEP 18. Voltage measurement at C-139 AWC-ECU 
connector
Disconnect the connector, and measure the voltage between 
terminal No.12 and ground at the wiring harness side.

OK: Battery positive voltage

Q: Is the check result normal?

YES : Go to Step 20.
NO :  Go to Step 19.

STEP 19. Intermediate connector, AWC-ECU connector, 
ETACS-ECU connector check: C-31, C-138, C-139, C-315
Q: Is the check result normal?

YES : The open circuit may be present in the power supply 

circuit. Repair the wiring harness between the C-139 
AWC-ECU connector terminal No.12 and C-315 
ETACS-ECU connector terminal No.4. Then go to 
Step 26.

NO :  Repair the defective connector. Then go to Step 26.

STEP 20. Voltage measurement at C-139 AWC-ECU 
connector
(1) Disconnect the connector, and measure the voltage 

between terminal No.16 and ground at the wiring harness 
side.

(2) Turn the ignition switch to the "ON" position.

OK: Battery positive voltage

Q: Is the check result normal?

YES : Go to Step 22.
NO :  Go to Step 21.

STEP 21. Intermediate connector, AWC-ECU connector, 
ETACS-ECU connector check: C-138, C-139, C-313
Q: Is the check result normal?

YES : The open circuit may be present in the power supply 

circuit. Repair the wiring harness between the C-139 
AWC-ECU connector terminal No.16 and C-313 
ETACS-ECU connector terminal No.2. Then go to 
Step 26.

NO :  Repair the defective connector. Then go to Step 26.

STEP 22. Resistance measurement at C-139 AWC-ECU 
connector
Disconnect the connector, and measure the resistance 
between terminal No.13 and ground at the wiring harness side.

OK: Continuity (Less than 2 

Ω)

Q: Is the check result normal?

YES : Go to Step 24.
NO :  Go to Step 23.

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

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STEP 23. Intermediate connector, AWC-ECU connector 
check: C-138, C-139
Q: Is the check result normal?

YES : The open circuit may be present in the ground circuit. 

Repair the wiring harness between the C-139 
AWC-ECU connector terminal No.13 and body 
ground. Then go to Step 26.

NO :  Repair the defective connector. Then go to Step 26.

STEP 24. Retest the system.
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 ETACS-ECU. (Refer to GROUP 54A 

− 

ETACS-ECU 

P.54A-825

). Then go to Step 25.

STEP 25. Retest the system.
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 AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 26.

STEP 26. Retest the system.
Q: Is the check result normal?

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

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

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INSPECTION PROCEDURE 3: Shifting the S-AWC control mode selector does not change the mode

Drive mode selector system circuit

AC902485

AWC-ECU

S-AWC
CONTROL
MODE
SELECTOR

S-AWC drive mode selector system circuit

AB

AC709494

AR

Connector: C-41

AC901075BK

Connector: C-32