Parking Lamp: Description and Operation

PARK LAMPS
The park lamps system includes the Body Control Module (BCM), a park lamp relay installed in the Junction Block (JB), and the exterior lighting switch integral to the left (lighting) control stalk of the multi-function switch. The front park lamp and side marker lamp or, if equipped, the front position lamp bulbs each have a path to ground at all times through two take outs with eyelet terminals of the headlamp and dash wire harness that are secured by ground screws to the left inner fender shield in the engine compartment. The rear park and license plate lamps have a path to ground at all times through a take out and eyelet terminal of the rear body harness that is secured by a ground screw to the base of the right D-pillar behind the quarter trim panel.

The BCM controls park lamp operation by monitoring the exterior lighting switch input from the multi-function switch, then energizing or de-energizing the park lamp relay. When the park lamp relay is energized, it provides battery voltage from a fuse in the Power Distribution Center (PDC) through a park lamp relay output circuit to the appropriate lamp bulbs. On vehicles manufactured for North American markets only, the BCM also provides a battery saver (load shedding) feature for the park lamps, which will turn these lamps off if they are left on for more than about eight minutes with the ignition switch in the Off position.