Inspection Procedure 2: The Rear Dome Light Does Not Illuminate Normally: 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.

Required Special Tools:

MB992006: Extra fine probe
MB991223: Harness set

STEP 1. Front dome light operation check
Check that the front dome light illuminates and extinguishes normally.

Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Refer to INSPECTION PROCEDURE 1: THE FRONT DOME LIGHT DOES NOT ILLUMINATE NORMALLY .
STEP 2. Rear dome light bulb check
Check that the rear dome light bulb is normal.

Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Replace the rear dome light bulb.
STEP 3. Check of open circuit in (LP+1) line between the rear dome light connector and ETACS-ECU connector.
Q: Is the check result normal?
- YES: Go to Step 4.
- NO: Repair the connector(s) or wiring harness.
STEP 4. Check of open circuit in (RLP-) line between the rear dome light connector and ETACS-ECU connector.
Q: Is the check result normal?
- YES: Go to Step 5.
- NO: Repair the connector(s) or wiring harness.
STEP 5. Check of open circuit in ground line between the rear dome light connector and ground.
Q: Is the check result normal?
- YES: Replace the rear dome light, and then go to Step 6.
- NO: Repair the connector(s) or wiring harness.
STEP 6. Retest the system
Check that the rear dome light illuminates/extinguishes normally.

Q: Is the check result normal?
- YES: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
- NO: Replace the ETACS-ECU.