Inspection Procedure 10: One of the position lights, the license plate lights or the taillights does not illuminate: 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. Bulb check
Check the bulb(s) of the light that does not illuminate.

Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Replace the bulb(s) of the light that does not illuminate.
STEP 2. Resistance measurement at the headlight assembly (position/side maker: LH) or (position/side maker: RH) connector, rear combination light (tail/side maker: LH) or (tail/side maker: RH) connector, license plate light (LH) or (RH) connector (ground terminal).
1. Disconnect the connector, and measure at the wiring harness side.
2. Measure the resistance between the connector terminal of light which does not illuminate and ground.
  - Measure the resistance between the headlight assembly (position/side maker: LH) or (position/side maker: RH) connector (ground terminals) and ground.
  - Measure the resistance between the rear combination light (tail/side maker: LH) or (tail/side maker: RH) connector (ground terminals) and ground.
  - Measure the resistance between the license plate light (LH) or (RH) connector (ground terminals) and ground.
    OK: The resistance should be 2 ohms or less
Q: Is the check result normal?
- YES: Go to Step 4.
- NO: Go to Step 3.
STEP 3. Check of open circuit in ground lines between the headlight assembly (position/side maker: LH) or (position/side maker: RH) connector, rear combination light (tail/side maker: LH) or (tail/side maker: RH) connector, license plate light (LH) or (RH) connector and ground.
Q: Is the check result normal?
- YES: Go to Step 5.
- NO: Repair the connector(s) or wiring harness.
STEP 4. Check of open circuit in (TAL1, TAR1, TAL2, TAR2) lines between the headlight assembly (position/side maker: LH) or (position/side maker: RH) connector, rear combination light (tail/side maker: LH) or (tail/side maker: RH) connector, license plate light (LH) or (RH) 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. Retest the system
Check that the position light, taillight and license plate light illuminate normally.

Q: Is the check result normal?

The lights illuminate normally at both high and low beams.: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).

When the position lights do not illuminate: Replace the position light socket.

When the taillights do not illuminate: Replace the rear combination light socket.

When the license plate lights do not illuminate: Replace the license plate light socket.