Mitsubishi Outlander GS45X. Manual — part 1725

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-205

.

OPERATION

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

.

DIAGNOSTIC TROUBLE CODE SET
CONDITIONS

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

• By the monitored electronic control solenoid (cen-

ter) current, the AWC-ECU judges the undercur-
rent failure.

• By the monitored electronic control solenoid (cen-

ter) 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 (center)

• Damaged harness wires and connectors

• Malfunction of AWC-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Electronic control coupling solenoid (center)
connector, intermediate connector, AWC-ECU connector
check: D-138, C-138, D-113, 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 D-138
electronic control coupling solenoid (center) connector
terminal No.2 and C-139 AWC-ECU connector terminal
No.2.
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 D-138
electronic control coupling solenoid (center) connector
terminal No.1 and C-139 AWC-ECU connector terminal
No.3.
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.

AC901075BL

Connectors: C-138, C-139

C-139

C-138 (GR)

AC901080AQ

Connectors: D-113, D-138

D-113

D-138

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-206

STEP 4. 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 5.
NO : Replace the electronic control coupling (center)

(Refer to GROUP 27C

− Electronic Control Coupling

P.27C-97

). Then go to Step 6.

STEP 5. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C1628 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.C1628 set?

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

Code No. C1629: ASC CAN Data (not received)

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

This diagnostic trouble code is set when the CAN
signal of the ASC-ECU cannot be received.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Damaged connectors (ASC-ECU)

• Malfunction of ASC-ECU

• 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

).

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-207

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.C1629 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.C1629 set?

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

Code No. C1630: Steering Wheel Sensor CAN Data (not received)

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

This diagnostic trouble code is set when the CAN
signal of the steering wheel sensor cannot be
received.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Damaged connectors (steering wheel sensor)

• Malfunction of the steering wheel sensor

• 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

).

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

TSB Revision

AUTOMATIC TRANSAXLE

23C-208

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.C1630 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.C1630 set?

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

Code No. C1631: ETACS CAN Data (not received)

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

This diagnostic trouble code is set when the CAN
signal of the ETACS-ECU cannot be received.

.

PROBABLE CAUSES

• Malfunction of the CAN bus line

• Damaged connectors (ETACS-ECU)

• 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

).