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Home >> Mitsubishi >> 2010 >> Outlander 2WD L4-2.4L (4B12) >> Repair and Diagnosis >> Brakes and Traction Control >> Antilock Brakes / Traction Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Traction Control/Active Skid Control System (TCL/ASC) >> Inspection Procedure 10: After ASC Off Switch Is Turned Off, TCL/Skid Control System Cannot Be Disabled.
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Inspection Procedure 10: After ASC Off Switch Is Turned Off, TCL/Skid Control System Cannot Be Disabled.

INSPECTION PROCEDURE 10: After ASC OFF switch is turned OFF, TCL/Skid control system cannot be disabled.











CAUTION
^ If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to Trouble code diagnosis Diagnosis).
^ Whenever ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION
The ETACS-ECU terminal No. 15 is grounded by pressing the ASC OFF switch and illuminate the ASC OFF indicator. The ON/OFF state of the ASC OFF switch is transferred from ETACS-ECU to ASC-ECU via the CAN bus line.

COMMENTS ON TROUBLE SYMPTOM
This may be caused by the open circuit in the ASC OFF switch circuit.

PROBABLE CAUSES
^ Damaged wiring harness and connectors
^ ASC OFF switch malfunction
^ ETACS-ECU malfunction
^ The ASC OFF switch is pressed for more than 15 seconds (The system returns to normal by pressing the ignition switch to the "OFF" position and to the "ON" position).

DIAGNOSIS

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. ASC OFF switch check.
Q: Is the check result normal?
YES: Go to Step 2.
NO: Replace ASC OFF switch. Then go to Step 6.

STEP 2. Connector check: C-313 ETACS-ECU connector, C-32 intermediate connector, C-101 ASC OFF switch connector
Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the damaged connector.

STEP 3. Wiring harness check between C-313 ETACS-ECU connector terminal No. 15 and C-101 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 4.
NO: Repair the wiring harness between C-313 ETACS-ECU connector terminal No. 15 and C-101 ASC OFF switch connector terminal No. 1.

STEP 4. Wiring harness check between C-101 ASC OFF switch connector terminal No. 2 and the body ground
^ Check the ground wires for open circuit.
Q: Is the check result normal?
YES: Go to Step 5.
NO: Repair the wiring harness between C-45 ASC OFF switch connector terminal No. 2 and the body ground.

STEP 5. Retest the system.
Q: Does ASC turn ON and OFF normally using ASC OFF switch?
YES: Intermittent malfunction (Refer to How to Cope with Intermittent Malfunction.)
NO: Replace the ETACS-ECU. Then go to Step 6.

STEP 6. Retest the system.
Q: Does ASC turn ON and OFF normally using ASC OFF switch?
YES: The procedure is complete.
NO: Return to Step 1.
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