Mitsubishi Outlander GS45X. Manual — part 1727
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-213
.
OPERATION
AWC-ECU power supply is provided from the battery
via ETACS-ECU.
.
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-214
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 less than 9 V.
.
PROBABLE CAUSES
• Battery failure
• Malfunction of charging system
• Malfunction of ETACS-ECU (power supply circuit
system)
• Damaged harness wires and connectors
• Malfunction of electronic control coupling sole-
noid (Front)
• Malfunction of electronic control coupling sole-
noid (center)
• Malfunction of AWC-ECU
DIAGNOSTIC PROCEDURE
STEP 1. M.U.T.-III diagnostic trouble code.
Check the ETACS diagnostic trouble code. (Refer to GROUP
54A
− Troubleshooting
Q: Is the diagnostic trouble code set?
YES : Perform the relevant troubleshooting.
NO : Go to Step 2.
STEP 2. Check the battery.
Refer to GROUP 54A
− Battery Test
.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Charge or replace the battery. Then go to Step 3.
STEP 3. Check the charging system.
Refer to GROUP 16
− Charging System
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair or replace the charging system component(s).
STEP 4. 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 8.
NO : Go to Step 5.
STEP 5. AWC-ECU connector, ETACS-ECU connector
check: C-139, C-315, C-138, C-31
Q: Is the check result normal?
YES : Go to Step 6.
NO : Repair the defective connector. Then go to Step 19.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-215
STEP 6. Check the wiring harness between C-139
AWC-ECU connector terminal No.12 and C-315
ETACS-ECU connector terminal No.4.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES : Go to Step 7.
NO : Check C-31, C-138 intermediate connector. When no
problem is found, repair the wiring harness. Then go
to Step 19.
STEP 7. M.U.T.-III data list.
Item No.31: Battery voltage (CAN input) (Refer to data list ref-
erence table
).
Q: Is the check result normal?
YES : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
).
NO : Replace the ETACS-ECU. (Refer to GROUP 54A
−
ETACS-ECU
STEP 8. AWC-ECU connector check: C-138, C-139
Q: Is the check result normal?
YES : Go to Step 9.
NO : Repair the defective connector. Then go to Step 19.
STEP 9. Check the wiring harness between C-139
AWC-ECU connector terminal No.13 and body ground.
Check the ground line for open circuit.
Q: Is the check result normal?
YES : Go to Step 10.
NO : Repair the wiring harness. Then go to Step 19.
STEP 10. 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 11.
NO : Repair the defective connector. Then go to Step 19.
STEP 11. 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 short circuit.
Q: Is the check result normal?
YES : Go to Step 12.
NO : Repair the wiring harness. Then go to Step 19.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-216
STEP 12. 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 short circuit.
Q: Is the check result normal?
YES : Go to Step 13.
NO : Repair the wiring harness. Then go to Step 19.
STEP 13. Check of the electronic control coupling solenoid
(Front)
Refer to
.
Q: Is the check result normal?
YES : Go to Step 14.
NO : Replace the transfer assembly (Refer to
).
Then go to Step 19.
STEP 14. 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 15.
NO : Repair the defective connector. Then go to Step 19.
STEP 15. 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 short circuit.
Q: Is the check result normal?
YES : Go to Step 16.
NO : Repair the wiring harness. Then go to Step 19.
STEP 16. 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 short circuit.
Q: Is the check result normal?
YES : Go to Step 17.
NO : Repair the wiring harness. Then go to Step 19.
STEP 17. Check of the electronic control coupling solenoid
(center)
Refer to GROUP 27C
− On-vehicle Service
Q: Is the check result normal?
YES : Go to Step 18.
NO : Replace the electronic control coupling (center)
(Refer to GROUP 27C
− Electronic Control Coupling
). Then go to Step 19.
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