Map Light: Description and Operation

OVERHEAD CONSOLE COURTESY/READING LAMP
The overhead console courtesy lamp is turned ON by the I/P dimmer switch, the overhead console reading lamp switch, or during illuminated entry.

ROOF RAIL COURTESY/READING LAMPS
The roof rail courtesy lamps are turned ON by the I/P dimmer switch, the individual roof rail courtesy lamp switch, or during illuminated entry.

During illuminated entry or when the I/P dimmer switch is ON the BCM wakes up and then energizes the courtesy lamps supply voltage circuit, suppling voltage to all interior lamps.

The roof rail courtesy/reading lamps can be turned on from the individual roof rail courtesy lamp switch. The BCM supplies voltage through the courtesy lamps supply voltage circuit when the BCM is awake. Manually turning on the roof rail courtesy lamp switch provides a ground path.