LaCrosse V6-3.8L VIN 2 (2005)
Marker Lamp: Description and Operation
PARK, TAIL, MARKER AND LICENSE LAMPS
The PK LAMPS fuse in the instrument panel (I/P) fuse block applies battery positive voltage to both the coil and switch side of the PARK LAMP Relay.
When the headlamp switch is placed in either the HEAD or PARK position, ground is applied from G202 to the headlamp switch. The headlamp switch
then applies the ground through the park lamp ON signal circuit to the body control module (BCM). The BCM then applies a ground to the park lamp
relay enable circuit. This energizes the PK LAMP relay, applying battery positive voltage to all the park, tail marker and license lamps. The park, tail
marker and license lamps are also turned ON when the headlamps are commanded ON by the BCM for low light operation.
