Diagnostic Procedure

WARNING: This page is about a different car, the 2015 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

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

Q: Is the check result normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus lines. (Refer to TROUBLESHOOTING ).
STEP 2. Scan tool diagnostic trouble code
Check the ETACS diagnostic trouble code. (Refer to TROUBLESHOOTING ).

Q: Is the DTC set?
1. YES: Perform the relevant troubleshooting.
2. NO: Go to Step 3.
STEP 3. ETACS-ECU coding data check
Using the scan tool, check if there is any abnormality to the coding data stored in the ETACS-ECU. (Refer to CODING REFERENCE TABLE ).

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Replace the ETACS-ECU. (Refer to ETACS-ECU ). Then go to Step 5.
STEP 4. Check whether the DTC is reset.
Q: Is DTC No. U1415 set?
1. YES: Replace the AWC-ECU. (Refer to AWC-ECU ). Then go to Step 5.
2. NO: Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
STEP 5. Check whether the DTC is reset.
Q: Is DTC No. U1415 set?
1. YES: Return to Step 1.
2. NO: This diagnosis is complete.