Anti-Lock Brake System: Description

CAUTION: See ANTI-LOCK BRAKE SAFETY PRECAUTIONS article in GENERAL INFORMATION before servicing anti-lock brake system.

The Bosch Anti-Lock Brake System (ABS) with optional Traction Control System (TCS) is designed to prevent wheel lock-up during heavy braking. This provides improved driver control and reduces the distance required to stop vehicle. The system also monitors rear wheel speed and compares it to front wheel speed. TCS is operational at all vehicle speeds. If excessive front wheel speed is detected at either front wheel, TCS will be activated. TCS uses front brake intervention, fuel cutoff and spark retard to provide improved traction.

Major system components include the Electronic Brake Control Module (EBCM) or Electronic Brake and Traction Control Module (EBTCM), speed sensors mounted at each wheel, 2 instrument cluster warning indicators and Brake Pressure Modulator (BPM) valve assembly. Brake pressure modulator assembly houses electric pump motor and solenoid valves.

NOTE: For more information on brake system, see BRAKE SYSTEM article.