Troubleshooting Hints - Exterior Lights

TROUBLESHOOTING HINTS

This section does not address conditions with the operation of the Daytime Running Lights. If the exterior lights work with the light Switch, but do not operate automatically, see DAYTIME RUNNING LIGHTS.

Try the following checks before doing any Diagnosis.


Turn lights:

1. Check the TURN B/U Fuse by operating Backup Lights.

2. If only some of the Turn Lights work but all Hazard Lights work, replace the Turn Hazard Switch.

3. If the Left Turn or Right Turn lights flash slowly or turn on other lights, check the ground wires and check that G103, G104 and G303 are clean and tight.

4. If the Turn Lights stay on (do not flash) in both Left Turn and Right Turn, replace the Turn Flasher.

5. If only one light does not light, check bulb, socket and related wiring (see schematic).

6. If the Front Turn Lights on vehicles equipped with DAYTIME RUNNING LIGHTS, do not operate in the daytime (Light Switch in OFF) but operate correctly at night (Light Switch in HEAD), see DAYTIME RUNNING LIGHTS.


Stop Lights:

1. Check the STOP HAZ Fuse by operating Hazard Lights.

2. If no Stop Lights work, check the Brake Switch and ORN (140) wire for continuity (see schematic).

3. If the Stop Lights do not turn off, adjust / replace the Brake Switch as necessary.

4. If only one light does not light, check bulb, socket and related wiring (see schematic).


Hazard Lights:

1. Check the STOP HAZ Fuse by operating the Stop Lights.

2. If only some Hazard Lights work but all of the Turn Lights work, replace the Turn-Hazard Switch.

3. If Hazard Lights do not turn off, replace the Turn-Hazard Switch.

4. If Hazard Lights stay on (do not flash), replace Hazard Flasher.


Park / Marker / Tail / License Light:

1. If none of the Park, Marker or Tail Lights work, check TAIL Fuse, Light Switch, ORN (240) and BRN (9) wires for continuity (see schematic).

2. If Front Marker and Park Lights do not work, check connection at C100 and related wiring (see schematic).

3. If the Park, Marker and License lights do not turn off, disconnect the Daytime Running Lights (DRL) Module connector C1 (with DAYTIME RUNNING LIGHTS). If the lights turn off replace the DRL Module. If the lights remain on, or without DAYTIME RUNNING LIGHTS, disconnect the Light Switch. If the lights remain on, check for a short to battery in the BRN (9) wire.