Circuit/System Description

The body control module (BCM) applies battery voltage to the interior courtesy lamps through the dome/courtesy lamps control circuits at terminal 1 X7 and terminal 5 X2. When any door is opened, the jam switch contacts close and the BCM receives a door-ajar input. If the BCM receives a door lock or unlock input or a rear hatch open input, the BCM will activate the dome/courtesy lamps control circuit terminal 1 X7 and terminal 5 X2, providing battery voltage to all courtesy lamps supplied by the circuits. In the event that any of these courtesy lamps were to remain illuminated for more than 10 minutes with the ignition switch in the OFF position, the BCM will deactivate the courtesy lamp control circuits to prevent total battery discharge.