Parking Lamp: Description and Operation

PARK, TAIL, MARKER AND LICENSE LAMPS

The park, tail, marker and license lamps are turned on when the headlamp switch is placed in the PARK or ON position or anytime the headlights are requested. The PARK LP fuse in the engine wiring harness junction block supplies battery positive voltage to the park lamp relay coil and the headlamp switch. The body control module (BCM) provides a ground, or control circuit, to the park lamp relay coil circuit during ALC operation. When the park lamps are turned on during ALC, the BCM energizes the park lamp relay. The park lamps can also be supplied battery positive voltage directly from the headlamp switch. Current flow is to the FR PARK fuse, LR PARK fuse, RR PARK fuse and the TRL PARK fuse, and to their respective park, marker and license lamps.

The front park and marker lamps are grounded at G111 and G112. The rear park, tail, marker and license lamps are grounded at G475 and G422 on the pickup and G450 and G402 on the utility. If the headlight switch is left in the ON position, the park, tail and marker lamps will remain on until turned off or the battery runs dead.

The front side marker lamps on the export vehicle stay on steady and do not flash alternately with the turn signals as the domestic vehicle does due to they are grounded directly to G111 and G112.