Headlights Circuit Description (Perimeter Lighting)

Perimeter lighting provides a personal security feature. The perimeter lighting feature illuminates all exterior lights on the vehicle for 15 seconds when the keyless entry transmitter is used to unlock the doors and it is dark outside.

The perimeter lighting system uses the following lamps:
^ The backup lamps
^ The headlamps
^ The park lamps
^ The cornering lamps

When you press the UNLOCK button on the keyless entry transmitter, 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 following components:
^ The headlamps
^ The park lamps

Battery positive voltage (B+) is supplied at all times through the IP fuse block PERIMETER LT fuse BA via CKT 1654 (TAN) to the perimeter lighting relay. The RFA provides ground for the perimeter lighting relay via CKT 1655 (DK GRN). The coil is energized. The switch contacts close. Battery positive voltage (B+) is provided to the following components:
^ Backup lamps
^ Cornering lamps (if equipped)

Refer to the following for additional perimeter lighting schematics:
^ Exterior Lights
^ Backup Lights Electrical Diagrams