Mitsubishi Evolution X. Manual — part 348

AC708953AJ

Connectors: C-202, C-205, C-214

C-205

C-202

C-214 (R)

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

TSB Revision

MANUAL TRANSAXLE

22A-41

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

P.54C-14

.) 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.

STEP 3. AWC-ECU connector, intermediate connector,
clock spring connector, AWC switch connector check:
C-46, C-31, C-41, C-202, C-205, C-214
Q: Is the check result normal?

YES : Go to Step 4.
NO : Repair the defective connector. Then go to Step 8.

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

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MANUAL TRANSAXLE

22A-42

STEP 4. Wiring harness check between C-46 AWC-ECU
connector terminal No. 11 and C-214 AWC switch
connector terminal No. 2
Check that the wiring harness is not shorted (short to ground).
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. 90, 91: AWC switch (Refer to service data reference
table

P.22A-107

.)

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

P.22A-133

.)

Q: Is the check result normal?

YES : Go to Step 7.
NO : Replace the AWC switch.(Refer to

P.22A-132

.) 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

P.22A-132

.) Then

go to Step 8.

NO : Intermittent malfunction. (Refer to GROUP 00

− How

to Cope with Intermittent Malfunction

P.00-15

.)

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)>

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MANUAL TRANSAXLE

22A-43

DTC C1614: Parking Brake Switch System (Clogging ON)

INTERFACE
CIRCUIT

CPU

COMBINATION
METER

PARKING
BRAKE
SWITCH

Parking brake switch system circuit

AC708950

Connector: C-04

AR

AC708951AN

C-23

C-122

Connectors: C-23, C-122

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 receives the parking brake switch signal
from the combination meter via ETACS-ECU.

.

DTC SET CONDITIONS

If the parking brake switch is stuck on, the code is
set.

.

PROBABLE CAUSES

• Parking brake switch malfunction

• Damaged harness wires and connectors

• Malfunction of the ETACS-ECU

• Malfunction of the combination meter

• Malfunction of AWC-ECU

• Driving with the parking brake pulled

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

TSB Revision

MANUAL TRANSAXLE

22A-44

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

P.54C-14

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C1614 set?

YES : Go to Step 3.
NO : This diagnosis is complete.

STEP 3. Scan tool service data
Item 40: Parking brake switch (Refer to service data reference
table

P.22A-107

.)

Q: Is the check result normal?

YES : Go to Step 9.
NO : Go to Step 4.

STEP 4. Scan tool diagnostic trouble code

• Check whether the combination meter-related DTC is set.

(Refer to GROUP 54A

− Troubleshooting

P.54A-28

.)

• Check the ETACS diagnostic trouble code. (Refer to

GROUP 54A

− Troubleshooting

P.54A-582

.)

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 5.

STEP 5. Check the parking brake switch as single unit.
Check the parking brake switch. (Refer to GROUP 36

−

On-vehicle Service

P.36-12

.)

Q: Is the check result normal?

YES : Go to Step 6.
NO : Replace the parking brake switch. (Refer to GROUP

36

− Parking Brake Lever

P.36-13

.) Then go to Step 9.

STEP 6. Combination meter connector, intermediate
connector, and parking brake switch connector check:
C-04, C-23, C-122
Q: Is the check result normal?

YES : Go to Step 7.
NO : Repair the defective connector. Then go to Step 9.