Lamps/Lighting - Interior

DIAGNOSIS AND TESTING - LAMPS/LIGHTING-INTERIOR

WARNING: EYE PROTECTION SHOULD BE USED WHEN SERVICING GLASS COMPONENTS. PERSONAL INJURY CAN RESULT.

CAUTION: Do not use bulbs other than those indicated in the Bulb Application table. Damage to lamp and/or Illumination Control Module can result. Do not use fuses, circuit breakers or relays having greater amperage value than indicated on the fuse panel or in the Owner's Manual.

If a vehicle experiences problems with the interior lighting system, verify the following are in proper operating condition:

- Battery connections
- Charging system
- Interior lamp bulbs
- Illumination Control Module/Headlamp switch
- Wiring harness connectors

For complete interior lamp system schematics and diagrams, see interior lamps/lighting schematics and diagrams. Schematics and Diagrams.

Each vehicle is equipped with various lamp assemblies. A good ground is necessary for proper lighting operation. Grounding is provided by the lamp socket when it comes in contact with the metal body, or through a separate ground wire.

When diagnosing the interior lighting circuits, remember that high generator output can burn out bulbs rapidly, and that dim or flickering bulbs can be caused by low generator output or a poor battery condition.

When changing lamp bulbs, check the socket for loose pin connections and/or evidence of corrosion. Repair as necessary.

When it is necessary to remove a component to service another, it should not be necessary to apply excessive force to bend a component to remove it. Before damaging a trim component, verify hidden fasteners or captured edges are not holding the component in place.