Mitsubishi Evolution X. Manual — part 347
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-37
STEP 9. Check whether the DTC is reset.
Q: Is DTC No. C1612 set?
YES : Return to Step 1.
NO : This diagnosis is complete.
DTC C1613: AWC Mode Select Switch System (Clogging) <Vehicles with steering audio remote
control switch >
ETACS-ECU
IGNITION
SWITCH (IG1)
FUSIBLE
LINK
34
S-AWC-ECU
AWC
SWITCH
IG1
RELAY
AWC mode select switch system circuit
AC708950CH
C-42
Connectors: C-42, C-46
C-46
AC708951CH
Connector: C-120
AC708972BI
Connectors: C-309, C-317
C-309 (B)
C-317
ETACS-ECU
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-38
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 controls the driving mode by the infor-
mation from AWC switch.
• AWC-ECU sends AWC control mode to the com-
bination meter via ETACS-ECU.
.
DTC SET CONDITIONS
If the AWC switch is stuck on, the code is set.
.
PROBABLE CAUSES
• AWC switch malfunction
• Damaged harness wires and connectors
• Malfunction of AWC-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines. (Refer to GROUP 54C
−
Troubleshooting
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C1613 set?
YES : Go to Step 3.
NO : This diagnosis is complete.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-39
STEP 3. Intermediate connector, AWC-ECU connector,
AWC switch connector check: C-42, C-46, C-120
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair the defective connector. Then go to Step 8.
STEP 4. Wiring harness check between C-46 AWC-ECU
connector terminal No. 21 and C-120 AWC switch
connector terminal No. 1
Check the wiring harness for short circuit (short to power sup-
ply).
Q: Is the check result normal?
YES : Go to Step 5.
NO : Repair the wiring harness. Then go to Step 8.
STEP 5. Scan tool service data
Item No. 89: AWC switch (Refer to service data reference table
.)
Q: Is the check result normal?
YES : Go to Step 7.
NO : Go to Step 6.
STEP 6. AWC switch single unit check
Check the AWC switch.(Refer to
Q: Is the check result normal?
YES : Go to Step 7.
NO : Replace the AWC switch.(Refer to
.) Then
go to Step 8.
STEP 7. Check whether the DTC is reset.
Q: Is DTC No. C1613 set?
YES : Replace the AWC-ECU.(Refer to
.) Then
go to Step 8.
NO : Intermittent malfunction. (Refer to GROUP 00
− How
to Cope with Intermittent Malfunction
.)
STEP 8. Check whether the DTC is reset.
Q: Is DTC No. C1613 set?
YES : Return to Step 1.
NO : This diagnosis is complete.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-40
DTC C1613: AWC Mode Select Switch System (Clogging) <Vehicles without steering audio remote
control switch >
AWC SWITCH
S-AWC-ECU
CLOCK
SPRING
AWC mode select switch system circuit
AC708951CJ
Connector: C-31
C-31 (B)
AC708950CL
C-41
C-46
Connectors: C-41, C-46
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