Circuit/System Description
WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
The brake pressure sensor is integral to the brake pressure modulator valve assembly. The electronic brake control module monitors the brake pressure sensor supply voltage and the signal voltage. The body control module sends a serial data message when the brake pedal is applied. The electronic brake control module uses input from the master cylinder pressure sensor for more accurate control during a vehicle stability enhancement system event.