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 Light 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 LOW Beam Lamps and HI Beam Lamps for damage to the filament or bulb.
2. If a LOW Beam Lamp or HI Beam Lamp has been found damaged and an unusually high amount of moisture is noticeable in the Headlamp Capsule, check the Vent Tube and Drain Tube for restriction. Small amounts of moisture are normally found in the Headlamp Capsule, however, excessive moisture can damage the lamps.
3. Check the LH and RH Headlamp Capsule connectors to be sure the connector seal is not damaged or missing.
4. If one Headlight does not work, check the lamp, connections and wires to the Headlight.
5. If HI Beams do not light, but the HI Beam Indicator lights, check CKT 11 for an open (see schematic).
6. If the Headlights do not turn "OFF," check CKT 10 for a short to Battery. If OK, replace the Headlight Switch.
7. If the Fog Lamps do not operate, check the Fog Lamp Relay Fuse.
8. If the "BRAKE" Indicator is lit with the Ignition Switch in "RUN" and the Park Brake released, see "Brake Warning System," for diagnosis.
9. If the Night Mode of the Daytime Running Lights (DRL) Module is activated in bright light, check that the Photoresistor is not obstructed (by dirt or lint, for example).
10. If one Fog Lamp does not light, check the bulb, connections, and wires to the Fog Lamp.

^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check.
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.