Troubleshooting Hints - Exterior Lights
Try the following checks1. If only one light does not operate, check bulb, socket, and related wiring.
2. If vehicle is equipped with Daytime Running Lights (T61) and Exterior Lights do not turn on automatically at dusk, refer to Daytime Running Lamp for diagnosis. Daytime Running Lamp
3. If the Turn Lights and Backup Lights do not work, check the TURN B/U Fuse.
4. If the Stop Lights and Hazard Lights do not work, check the STOP HAZ Fuse.
5. If the Stop Lights do not turn work, check the Brake Switch and ORN (140) wire for continuity (see schematic).
6. If the Stop Lights do not turn off, adjust or replace the Brake Switch as necessary.
7. If the High Level Stop Light does not work, check bulb, CKT 820 wire and CKT 150 wire for an open.
8. For any of the following symptoms, replace the Turn-Hazard Switch Assembly:
- Turn Signal Switch will not Turn "ON"/"OFF."
- All Turn/Hazard/Stop Lights do not work and C206 is firmly mated.
- Some Turn Lights work and all Hazard Lights work.
- Some Hazard Lights work and all Turn Lights work.
- Hazard Lights do not turn "OFF."
9. If the Turn Indicator and the Front Turn Light on one side are inoperative, check the connection at connector C206 and CKT 14 for an open, then replace the Turn-Hazard Switch Assembly as necessary.
10. If Tail, Rear Marker, and License Lights do not work, check the TAIL Fuse, Light Switch, ORN (240), BRN (9), and BLK (150) wire for continuity.
11. If the Tail, Rear Marker, and License Lights do not work, but the front Exterior Lights work, check connector C204, terminal Y and related wiring (see schematic).
12. If the Turn Lights stay on (do not flash) in both LEFT and RIGHT, replace the Turn Flasher.
13. If the Hazard Lights stay on (do not flash) in HAZARD, but the Stop Lights go off normally, replace the Hazard Flasher.
14. If Park, Tail License, Rear Marker and Front Marker Lights do not turn off, check Light Switch. If OK, check CKT 9 for a short to B+.
^ Check for a broken (or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a continuity/voltage check with a system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a voltage drop with the system operational (under load).
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems refer to Diagnostic Aids. Diagnostic Aids