Operation CHARM: Car repair manuals for everyone.

Headlamp Test

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.

Always begin any diagnosis by testing all of the fuses and circuit breakers in the system.

For addtional testing please refer to Powertrain Management/Computers and Controls/Body Control Module/Testing and Inspection/ Testing and Inspection