Trunk Lamp: Description and Operation

Circuit Description
The ETACM receives several switch signals(for instance, front & rear door switch signal, trunk room lamp switch signal) and controls the operation of the lamps. Battery voltage is applied at all times to the overhead console lamps (with sunroof), room lamp (without sunroof), map lamp(without sunroof), door lamps and trunk room lamps.

Battery voltage is applied at all times to the door ajar indicators. When the appropriate switch (see schematic) is closed, a ground path is provided to the respective lamp through ETACM. The lamps to go on.