Lamp Systems

Lighting circuits are protected by fuses. Lighting circuits require an overload protected power and high side drivers source, ON/OFF device, lamps and body grounds to operate properly. Plastic lamps require a wire in the harness to supply body ground to the lamp socket. Replace sockets and bulbs that are corroded.

Some of the interior and exterior lighting functions are governed by the Body Control Module (BCM). The headlamp, dome, and the door ajar switches provide signals to the BCM. The BCM in turn sends a Programmable Communication Interface (PCI) bus message to the Integrated Power Module (IPM) to enable the necessary drivers to set the required illumination configuration.

Wire connectors can make intermittent contact or become corroded. Before coupling wire connectors, inspect the terminals inside the connector. Male terminals should not be bent or disengaged from the insulator. Female terminals should not be sprung open or disengaged from the insulator. Bent and sprung terminals can be repaired using needle nose pliers and pick tool. Corroded terminals appear chalky or green. Corroded terminals should be replaced to avoid recurrence of the problem symptoms.

This model may be equipped with Auto Headlamps, Headlamps On With Windshield Wipers customer programmable feature, Daytime Running Lamps (DRL - Canada Only), and High Intensity Discharge (HID) Headlamps.