DeVille DHS V8-4.6L VIN Y (2000)
Ambient Light Sensor: Description and Operation
Lighting System Description
The ambient light sensor is located in the center of the defroster grille. The ambient light sensor is a photo transistor. The ambient light sensor output
changes as the light level through the windshield changes. Daytime or nighttime conditions are determined by the value of the ambient light sensor. If an
object is covering the ambient light sensor, the vehicle may act as if nighttime conditions exist even though it is daytime.