Anti-Lock Braking

The Anti-Lock Brake System (ABS) and Traction Control System (TCS) increases vehicle control during severe deceleration and acceleration on most road surfaces. The ABS/TCS monitors individual wheel speed during a braking event. The Electronic Brake/Traction Control Module (EBTCM) processes these values and produces commands to prevent braked wheels from locking.

The Brake Pressure Modulator Valve (BPMV) regulates brake fluid pressure based on road condition information from EBTCM, regardless of master cylinder output pressure. The BPMV can maintain, reduce or increase brake fluid pressure under ABS conditions; however, BPMV cannot increase brake fluid pressure above master cylinder output. BPMV can apply brake pressure to rear brakes when EBTCM requires a rear wheel be slowed (regulated) during a Traction Control System (TCS) event.