Brake Pedal Position (BPP) Switch
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Brake pedal position status comes from the BPP switch. The BPP switch sends a voltage signal to the PCM when the brake pedal is applied. The PCM uses this input to disengage the TCC, speed control and auxiliary idle (if equipped).