Troubleshooting Hints

CAUTION: Halogen bulbs contain a gas under pressure. Handling a bulb improperly could cause it to shatter into flying glass fragments. To help avoid personal injury:
^ Turn OFF the headlamp switch and allow bulb to cool before changing bulbs. Leave the switch off until bulb change is complete.
^ Always wear eye protection when changing a halogen bulb.
^ Handle the bulb only by its base. Avoid touching the glass.
^ Do not drop or scratch the bulb. Keep moisture away.
^ Place the used bulb in the new bulb's carton and dispose of it properly.
^ Keep halogen bulbs out of reach of children.

1. Check suspect headlamp bulbs for damage or open filament.
2. If a headlamp bulb has been damaged and an unusually high amount of moisture is noticeable in the headlamp, check the vent tube and drain tube for restriction. Small amounts of moisture are normally found in the headlamp. However, excessive moisture can damage the lamps.
3. Check the LH and RH headlamp connectors to be sure the connector seals are not damaged or missing.
4. If one headlamp does not work, check the bulb, connection and wires to the headlamp and the fuse.
5. If HI beams light but the HI beam indicator does not light, check circuit 1200 for an open.
6. If the headlamps do not turn off, check circuit 10 for a short to ground. If OK, replace the headlamp switch.
7. If the fog lamps do not operate, or fail to operate correctly, refer to Fog Lamps. Fog/Driving Lamp
^ 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 General Troubleshooting Procedures. Diagnostic Aids
^ Refer to System Diagnosis.