Circuit Description
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) applies a ground through the brake pedal position sensor reference low circuit to the brake pedal position (BPP) sensor. The BCM supplies a 10-volt reference through the brake sensor reference voltage circuit to the BPP sensor. The BPP sensor sends a variable voltage signal through the BPP sensor signal circuit to the BCM as the brake pedal is applied.