Mitsubishi Outlander GS45X. Manual — part 1723
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-197
Code No.C1624: AWC-ECU System (Internal Error)
.
OPERATION
AWC-ECU monitors the malfunction in the ECU.
.
DIAGNOSTIC TROUBLE CODE SET
CONDITIONS
This diagnostic trouble code is set when
RAM/ROM/EEPROM of AWC-ECU has a failure.
.
PROBABLE CAUSES
• Malfunction of AWC-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C1624 set?
YES : Replace the AWC-ECU. (Refer to
go to Step 2.
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
).
STEP 2. Check whether the diagnostic trouble code is
reset.
Q: Is diagnostic trouble code No.C1624 set?
YES : Return to Step 1.
NO : This diagnosis is complete.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-198
Code No. C1626: Actuator Power Supply Voltage Malfunction
ELECTRONIC
CONTROL
COUPLING
SOLENOID
(CENTER)
AWC-ECU
Electronic control coupling solenoid system circuit
AC902486
ELECTRONIC
CONTROL
COUPLING
SOLENOID
(FRONT)
AB
AC901112
Connector: A-13
AH
AC901598
AD
Connector: B-28
B-28 (GR)
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
AUTOMATIC TRANSAXLE
23C-199
.
OPERATION
The AWC-ECU monitors the actuator power supply
voltage.
.
DIAGNOSTIC TROUBLE CODE SET
CONDITIONS
The AWC-ECU monitors the actuator power supply
voltage of immediately after the ignition is turned ON
and when the abnormality of the actuator power sup-
ply voltage is detected, this diagnostic trouble code is
set.
.
PROBABLE CAUSES
• Malfunction of electronic control coupling sole-
noid (center)
• 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 10.
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 short circuit (for short to the
power supply).
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the wiring harness. Then go to Step 10.
AC901075BM
Connector: C-42
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)>
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AUTOMATIC TRANSAXLE
23C-200
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 short circuit (for short to the power
supply).
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair the wiring harness. Then go to Step 10.
STEP 4. Check of the electronic control coupling solenoid
(Front)
Refer to
.
Q: Is the check result normal?
YES : Go to Step 5.
NO : Replace the transfer assembly (Refer to
).
Then go to Step 10.
STEP 5. 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 6.
NO : Repair the defective connector. Then go to Step 10.
STEP 6. 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 (for short to the
power supply).
Q: Is the check result normal?
YES : Go to Step 7.
NO : Repair the wiring harness. Then go to Step 10.
STEP 7. 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 (for short to the power
supply).
Q: Is the check result normal?
YES : Go to Step 8.
NO : Repair the wiring harness. Then go to Step 10.
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