Inspection Procedure 8: After the ASC OFF switch is pressed to turn "OFF," the skid control/TCL cannot be cancelled: Diagnosis

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991958 Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827 M.U.T.-III USB Cable
- MB991910 M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.
Using scan tool MB991958, diagnose the CAN bus lines.

Q: Is the check result normal?

YES : Go to Step 2.

NO : Repair the CAN bus lines. (Refer to TROUBLESHOOTING .) After repairing the CAN bus line, go to Step 8.
STEP 2. ASC OFF switch check
Refer to ASC OFF SWITCH .

Q: Is the check result normal?

YES : Go to Step 3.

NO : Replace the ASC OFF switch. (Refer to ASC OFF SWITCH .) Then, go to Step 8.
STEP 3. Connector check: C-313 ETACS-ECU connector, C-42 intermediate connector, C-135 ASC OFF switch connector
Q: Is the check result normal?

YES : Go to Step 4.

NO : Repair the defective connector.
STEP 4. Wiring harness check between C-313 ETACS-ECU connector terminal No. 15 and C-135 ASC OFF switch connector terminal No. 1
- Check the power supply circuit for open circuit.
Q: Is the check result normal?

YES : Go to Step 5.

NO : Repair the wiring harness between C-313 ETACS-ECU connector terminal No. 15 and C-135 ASC OFF switch connector terminal No. 1.
STEP 5. Wiring harness check between C-135 ASC OFF switch connector terminal No. 2 and the body ground
- Open circuit check of the ground circuit
Q: Is the check result normal?

YES : Go to Step 6.

NO : Repair the wiring harness between C-135 ASC OFF switch connector terminal No. 2 and the body ground.
STEP 6. Retest the system.
Q: Does ASC turn ON and OFF normally using the ASC OFF switch?

YES : Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)

NO : Replace the ETACS-ECU. (Refer to ETACS-ECU .) Then, go to Step 7.
STEP 7. Retest the system.
Q: Does ASC turn ON and OFF normally using the ASC OFF switch?

YES : The procedure is complete.

NO : Replace the combination meter. (Refer to COMBINATION METER .) Then, go to Step 8.
STEP 8. Retest the system.
Q: Does ASC turn ON and OFF normally using the ASC OFF switch?

YES : The procedure is complete.

NO : Return to Step 1.