Inspection Procedure 11: ASC does not operate or faulty ASC operate: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. DTC check
Use scan tool (M.U.T.-III) to check the DTC for the ASC system (Refer to DIAGNOSTIC TROUBLE CODE CHART ).

Q: Is the check result normal?
1. YES: Go to Step 2.
2. NO: Carry out the diagnosis for the DTC (Refer to DIAGNOSTIC TROUBLE CODE CHART ).
STEP 2. Engine ECU coding data check
Using scan tool (M.U.T.-III), check if any abnormality is present to the coding data below which are stored in the engine control module (Refer to CODING LIST ).

A.S.C.

OK: Available

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Go to Step 3.
STEP 3. Engine ECU coding data check
Perform the variant coding to the Engine ECU.

Q: Is the check result normal?
1. YES: Go to Step 5.
2. NO: Replace the engine ECU (Refer to ENGINE CONTROL MODULE < 2.4L ENGINE >, ENGINE CONTROL MODULE < 3.0L ENGINE >). Then go to Step 5.
STEP 4. Hydraulic unit (integrated with ASC-ECU) check
Check that the brake tube is correctly mounted to the hydraulic unit (integrated with ASC-ECU) (Refer to HYDRAULIC UNIT (HU) CHECK ).

Q: Is the check result normal?
1. YES: Replace the hydraulic unit (integrated with ASC-ECU) (Refer to HYDRAULIC UNIT (HU) CHECK ). Then go to Step 5.
2. NO: Connect the brake tubes correctly, and repair or replace the external brake lines of the hydraulic unit (integrated with ASC-ECU).
STEP 5. Operation check
Q: Does stability control/TCL operate normally?
1. YES: This diagnosis is complete.
2. NO: Check the brake system related components other than the stability control/TCL system.