Courtesy Lamp: Description and Operation

COURTESY LAMPS

The courtesy lamp supply voltage circuit provides voltage to the interior illumination lamps which are all located on the underside of the inside rear view mirror. If a door is opened, the courtesy lamps illuminate. After all the doors have been closed, the courtesy lamps will remain illuminated approximately 15 seconds after the last door closes. The courtesy lamps will also turn ON prior to any door being opened and will remain illuminated approximately 40 seconds when the driver removes the ignition key. The body control module (BCM) will immediately turn off the courtesy lamps if a door lock command is received with all of the doors closed, or if the ignition switch is turned to either the ON or RUN position.