Operation CHARM: Car repair manuals for everyone.

Perimeter Lighting

Perimeter lighting provides a personal security feature by illuminating exterior lights on the vehicle exterior for 15 seconds when the keyless entry transmitter is used to unlock the doors and it is dark outside. The backup lamps, headlamps, and park lamps will come on.

When the UNLOCK button on the key fob is pressed, the Remote Function Actuator (RFA) module grounds CKT 624 (BLK/WHT) to the Lamp Control Module (LCM). The LCM then provides battery positive voltage (B+) to the headlamps and park lamps. The RFA provides ground for the PERIM LP Relay through CKT 1655 (DK GRN). The coil is energized and the switch contacts close providing battery positive voltage (B+) to the backup lamps.

Also refer to Exterior Lights and Backup Lights for perimeter lighting schematics.
Electrical Diagrams
Electrical Diagrams