Mitsubishi Outlander GS45X. Manual - part 1728

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-217

STEP 18. M.U.T.-III data list.
Item No.31: Battery voltage (CAN input) (Refer to data list ref-
erence table 

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 AWC-ECU. (Refer to 

P.23C-295

). Then 

go to Step 19.

STEP 19. Check whether the diagnostic trouble code is 
reset.
Q: Is diagnostic trouble code No.C2100 set?

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

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-218

Code No.C2101: Battery Voltage Malfunction (High Voltage)

AC902491

Power supply system circuit

ETACS-
ECU

FUSIBLE 
LINK

34

IGNITION 
SWITCH (IG1)

IG1 
RELAY

AWC-ECU

POWER 
SUPPLY

ELECTRONIC
CONTROL
COUPLING
SOLENOID
(CENTER)

ELECTRONIC
CONTROL
COUPLING
SOLENOID
(FRONT)

AB

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-219

.

OPERATION

AWC-ECU power supply is provided from the battery 
via ETACS-ECU.

.

DIAGNOSTIC TROUBLE CODE SET 
CONDITIONS

This diagnostic trouble code is set when the 
AWC-ECU power supply voltage and the actuator 
power supply voltage are 18 V or more.

.

AC901112

Connector: A-13

AH

AC901598

AD

Connector: B-28

B-28 (GR)

AC901075BO

Connector: C-31

AC901075BM

Connector: C-42

AC901075BL

Connectors: C-138, C-139

C-139

C-138 (GR)

AC702828BI

Connectors: C-309, C-313, C-315, C-317

C-315

C-309 (B)

C-313 (BR)

C-317

AC901080AQ

Connectors: D-113, D-138

D-113

D-138

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-220

PROBABLE CAUSES

• Malfunction of charging system

• Loose battery terminal

• Damaged harness wires and connectors

• Malfunction of AWC-ECU

• ETACS-ECU malfunction

DIAGNOSTIC PROCEDURE

STEP 1. 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 2.

STEP 2. Battery terminal check
Check that the battery terminal is not loose.
Q: Is the check result normal?

YES : Go to Step 3.
NO :  Securely install the battery terminal. Then go to Step 

3.

STEP 3. Check the charging system.
Refer to GROUP 16 

− Charging System 

P.16-8

.

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Repair or replace the charging system component(s).

STEP 4. Check the battery.
Refer to GROUP 54A 

− Battery Test 

P.54A-9

.

Q: Is the check result normal?

YES : Go to Step 5.
NO :  Replace the battery. Then go to Step 5.

STEP 5. 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 9.
NO :  Go to Step 6.

STEP 6. AWC-ECU connector, ETACS-ECU connector, 
intermediate connector check: C-139, C-315, C-31, C-138
Q: Is the check result normal?

YES : Go to Step 7.
NO :  Repair the defective connector. Then go to Step 10.