Operation CHARM: Car repair manuals for everyone.

Map Light: Description and Operation



COURTESY/READING LAMPS

The courtesy/reading lamps receive voltage in 2 ways. The reading lamps receive voltage on the inadvertent power courtesy lamp circuit, which has voltage any time the BCM is awake, and are turned ON by the individual switch on the lamp assembly. The courtesy lamps receive voltage on the courtesy lamp high control circuit, controlled by the BCM.