Brake Lamp: Description and Operation
STOP LAMPSThe turn signal lamps are also used as stop lamps. The STOP/TURN/HAZARD Fuse in the I/P fuse block supplies battery positive voltage to the BCM for the stop lamps.
A 10-volt reference signal and a low reference signal is applied from the BCM to the brake pedal position (BPP) sensor. When the brake pedal is applied, the BPP sensor applies a signal to the BPP sensor signal circuit to the BCM. The BCM then applies battery positive voltage to the LR and RR stop/tall/turn lamps through the LR and RR stop/turn lamps supply voltage circuit. The BCM also supplies a battery positive voltage to the CHMSL through the stop lamp supply voltage circuit. The ground for the LR stop/tall/turn lamp is supplied from G301. The ground for the RR stop/tall/turn lamp and for the CHMSL is supplied from G302.