Inspection Procedure 4: Audio illumination does not work 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:

MB991223: Harness Set
MB992006: Extra Fine Probe

STEP 1. Check that the taillights illuminate.
Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Diagnose the taillights. (Refer to TROUBLE SYMPTOM CHART .)
STEP 2. Check the illumination.
When the taillights are turned on, check whether the illumination other than the radio and CD player is turned on.

Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Replace the heater controller assembly (A/C-ECU).
STEP 3. Check of short to power supply, short to ground, and open circuit in ILL+ line between radio and CD player connector and heater controller assembly (A/C-ECU) connector
Q: Is the check result normal?
- YES: Go to Step 4.
- NO: Repair the connector(s) or wiring harness.
STEP 4. Retest the system
When the taillights illuminate, check that the illumination of the radio and CD player is switched from day mode to night mode.

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 radio and CD player.