Brake Lamp: Description and Operation
STOP LAMPSThe BCM is responsible for controlling the stop lamps. When the driver presses the brake pedal, the BCM will receive a signal from the Brake Pedal Position Sensor. The BCM then supplies battery positive voltage to both left and right stop lamp assemblies and to the center high mounted stop lamp (CHMSL). The stop lamps are grounded at G401 and G403. The CHMSL is grounded at G302.