Impala V6-3.8L SC VIN 1 (2005)
Tail Lamp: Description and Operation
PARK, TAIL, MARKER LAMPS, AND LICENSE
The park, tail and marker lamps, including the license lamps, turn ON when the headlamp switch is placed in either the PARK or the HEAD position, or
anytime the headlamps are requested. The RT I/P #1 fuse in the RH I/P fuse block supplies battery positive voltage to both the park lamp relay switch
contacts and to the park lamp relay coil circuit. The park lamp relay coil is controlled by the body control module (BCM). When the headlamp switch is
placed in the PARK position, the BCM energizes the park lamp relay coil control circuit.
Current flows from the park lamp relay switch to both front and rear park lamp fuses and to their respective park/tail lamps. The front park lamps are
grounded at G101. The rear park lamps are grounded at G302. The license plate lamps are a part of the rear park lamp circuit and are grounded at G302.
The inadvertent power control feature prevents the park lamps from remaining on more than 10 minutes if left on. If the park lamps are turned on after
the ignition switch has been turned OFF, or is in the ACCY position, they will remain on until turned off or until the battery runs dead.
A surveillance mode is available in Special Equipment Option (SEO) vehicles. The headlamps and park lamps may be disabled by using the emergency
vehicle interior lamp switch.
