Diagnostic Procedure

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. Scan tool (M.U.T.-III) CAN bus diagnostics
Use scan tool (M.U.T.-III) to perform the CAN bus diagnosis.

Q: Is the check result normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ).
STEP 2. Scan tool (M.U.T.-III) data list
Item 50: Brake switch

OK: The service data changes in response to the brake operation.

Q: Is the check result normal?
1. YES: Intermittent malfunction
2. NO: Go to Step 3.
STEP 3. Stoplight Switch Check
Refer to STOPLIGHT SWITCH CHECK .

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Replace the stoplight switch.
STEP 4. Check for open circuit in STP line between the stoplight switch connector and the ETACS-ECU connector
Q: Is the check result normal?
1. YES: Go to Step 5.
2. NO: Repair the connector(s) or wiring harness.
STEP 5. Check for open circuit or short to ground in BKLP line between the ETACS-ECU connector and the stoplight switch connector
Q: Is the check result normal?
1. YES: Go to Step 6.
2. NO: Repair the connector(s) or wiring harness.
STEP 6. Symptom recheck after erasing DTC
Q: Is the check result normal?
1. YES: Intermittent malfunction
2. NO: Replace the ETACS-ECU, and then go to Step 7.
STEP 7. Symptom recheck after erasing DTC
Q: Is the check result normal?
1. YES: Intermittent malfunction
2. NO: Replace TCM.