Mitsubishi Lancer Evolution X. Manual — part 488

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

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MANUAL TRANSAXLE

22A-45

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C1615 set?

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

STEP 3. Scan tool diagnostic trouble code
Check if the ASC diagnostic trouble code No. U0251, U0435,
or U0440 is set. (Refer to GROUP 35C − Troubleshooting

P.35C-22

.)

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 4.

STEP 4. Scan tool diagnostic trouble code
Check other AWC diagnostic trouble code.(Refer to

P.22A-12

.)

Q: Is the DTC set?

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

STEP 5. Check whether the DTC is reset.
Q: Is DTC No. C1615 set?

YES : Replace the AWC-ECU.(Refer to

P.22A-133

.)

NO : Intermittent malfunction. (Refer to GROUP 00 − How

to Cope with Intermittent Malfunction

P.00-15

.)

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

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MANUAL TRANSAXLE

22A-46

DTC C1616: Cranking Signal System (ON sticking)

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 signal of the ignition switch
from ETACS-ECU via CAN communication.

.

DTC SET CONDITIONS

The code is set when the cranking signal is set for
five seconds or more continuously while driving.

.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU
• Ignition switch malfunction
• Damaged harness wires and connectors
• Malfunction of AWC-ECU

IGNITION
SWITCH

ETACS-ECU

(FUSE )

14

ETACS-ECU

Cranking signal system circuit

AC708953AI

Connector: C-210

AC708972AU

Connector: C-315

ETACS-ECU

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

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MANUAL TRANSAXLE

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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-15

.) After repairing the CAN

bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C1616 set?

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

STEP 3. Scan tool diagnostic trouble code

• Check the KOS diagnostic trouble code. (Refer to GROUP

42B − Troubleshooting

P.42B-23

.)

• Check the WCM diagnostic trouble code. (Refer to GROUP

42C − Troubleshooting

P.42C-14

.)

• Check the ETACS diagnostic trouble code. (Refer to

GROUP 54A − Troubleshooting

P.54A-646

.)

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.
NO : Go to Step 4.

STEP 4. Scan tool service data
Item 42: Ignition 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 5.

STEP 5. Ignition switch check
(1) Disconnect C-210 ignition switch connector, and check the

continuity between the terminals No. 1 and No. 5 at the
ignition switch side.

(2) Turn the ignition switch to the "ON" position.

OK: No continuity

Q: Is the check result normal?

YES : Go to Step 6.
NO : Replace the ignition switch. (Refer to GROUP 54A −

Ignition Switch

P.54A-23

.) Then go to Step 10.

STEP 6. Ignition switch connector, ETACS-ECU connector
check: C-210, C-315
Q: Is the check result normal?

YES : Go to Step 7.
NO : Repair the defective connector. Then go to Step 10.

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

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MANUAL TRANSAXLE

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STEP 7. Check the wiring harness between C-210 ignition
switch connector terminal No. 5 and C-315 ETACS-ECU
connector terminal No. 7.
Check the wiring harness for short circuit (short to power sup-
ply).
Q: Is the check result normal?

YES : Go to Step 8.
NO : Repair the wiring harness. Then go to Step 10.

STEP 8. Scan tool service data
ETACS item No. 287: Starter switch (Refer to GROUP 54A −

ETACS

P.54A-694

.)

Q: Is the check result normal?

YES : Go to Step 9.
NO : Replace the ETACS-ECU. (Refer to GROUP 54A −

ETACS-ECU

P.54A-742

.) Then go to Step 9.

STEP 9. Check whether the DTC is reset.
Q: Is DTC No. C1616 set?

YES : Replace the AWC-ECU.(Refer to

P.22A-133

.) Then

go to Step 10.

NO : Intermittent malfunction. (Refer to GROUP 00 − How

to Cope with Intermittent Malfunction

P.00-15

.)

STEP 10. Check whether the DTC is reset.
Q: Is DTC No. C1616 set?

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

DTC C1617: AWC CAN Main Data System (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 receives various data from ECU via CAN
communication.

.

DIAGNOSTIC TROUBLE CODE SET
CONDITIONS

The code is set when the signal necessary for AWC
control cannot be received.

.

PROBABLE CAUSES

• The CAN bus line is defective.
• Malfunction of engine control module
• Malfunction of ASC-ECU
• Malfunction of steering wheel sensor
• Malfunction of the ETACS-ECU
• Malfunction of AWC-ECU