Trunk Lamp: Description and Operation
REAR COMPARTMENT LAMPWhen the rear compartment is opened, the rear compartment lamp illuminates.
When the rear compartment is opened, the rear compartment courtesy lamp switch sends two ground signals. The first signal is an input to the BCM that wakes the BCM. When the BCM wakes up it will then energize the delayed interior lamps relay, suppling voltage to the rear compartment courtesy lamp. The rear compartment courtesy lamp switch also provides a second ground for the rear compartment courtesy lamp in order to illuminate the lamp. The BCM also activates the rear compartment lid release open indicator lamp in the instrument cluster.