Mitsubishi Outlander GS45X. Manual - part 1724

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-201

STEP 8. Check of the electronic control coupling solenoid 
(center)
Refer to GROUP 27C 

− On-vehicle Service 

P.27C-94

.

Q: Is the check result normal?

YES : Go to Step 9.
NO :  Replace the electronic control coupling (center) 

(Refer to GROUP 27C 

− Electronic Control Coupling 

P.27C-97

). Then go to Step 10.

STEP 9. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.C1626 set?

YES : Replace the AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 10.

NO :  Intermittent malfunction. (Refer to GROUP 00 

− How 

to Cope with Intermittent Malfunction 

P.00-15

).

STEP 10. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.C1626 set?

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

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-202

Code No. C1627: Abnormal Electronic Control Solenoid (Front) Current

.

AWC-ECU

Electronic control coupling solenoid (front) system circuit

AC902489

ELECTRONIC
CONTROL
COUPLING
SOLENOID
(FRONT)

AC901112

Connector: A-13

AH

AC901598

AD

Connector: B-28

B-28 (GR)

AC901075BM

Connector: C-42

AC901075BN

Connector: C-139

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-203

OPERATION

The AWC-ECU monitors the current value of the 
electronic control coupling solenoid (Front).

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

This diagnostic trouble code is set when the abnor-
mality below is detected:

• By the monitored electronic control solenoid 

(front) current, the AWC-ECU judges the under-
current failure.

• By the monitored electronic control solenoid 

(front) current, the AWC-ECU judges the overcur-
rent failure.

• The AWC-ECU judges the monitor circuit failure.

.

PROBABLE CAUSES

• Malfunction of electronic control coupling sole-

noid (Front)

• Damaged harness wires and connectors

• Malfunction of AWC-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Electronic control coupling solenoid (front) 
connector, intermediate connector, AWC-ECU connector 
check: B-28, A-13, C-42, C-139
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the defective connector. Then go to Step 6.

STEP 2. Check the wiring harness between B-28 electronic 
control coupling solenoid (front) connector terminal No.1 
and C-139 AWC-ECU connector terminal No.1.
Check the power supply line for open or short circuit.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Repair the wiring harness. Then go to Step 6.

STEP 3. Check the wiring harness between B-28 electronic 
control coupling solenoid (front) connector terminal No.2 
and C-139 AWC-ECU connector terminal No.14.
Check the ground line for open or short circuit.
Q: Is the check result normal?

YES : Go to Step 4.
NO :  Repair the wiring harness. Then go to Step 6.

STEP 4. Check of the electronic control coupling solenoid 
(Front)
Refer to 

P.23C-277

.

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Replace the transfer assembly (Refer to 

P.23C-292

). 

Then go to Step 6.

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-204

STEP 5. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.C1627 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.C1627 set?

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

Code No. C1628: Abnormal Electronic Control Solenoid (center) Current

AWC-ECU

Electronic control coupling solenoid (rear) system circuit

AC902490

ELECTRONIC
CONTROL
COUPLING
SOLENOID
(CENTER)

AB