Circuit Description
WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) uses the DRL ambient light sensor signal circuit to control the automatic headlamp control system. The ambient light sensor is connected directly to the BCM through the DRL ambient light sensor signal circuit and through the DRL ambient light sensor low reference circuit.