Anti-Lock Brake System With Traction Control System And VSES - BOSCH 5: Description

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

The Bosch 5 Anti-Lock Brake System/Traction Control System (ABS/TCS) increases vehicle steerability, directional stability and optimum deceleration in severe braking conditions on most road surfaces. The ABS monitors wheel speed and controls brakeline pressure to eliminate uncontrolled skidding.

The system also monitors rear wheel speed and compares it to front wheel speed. If excessive front wheel speed is detected at either front wheel, TCS will be activated. TCS uses front brake intervention, engine timing and injector cut-out to provide improved traction and vehicle stability. System is also equipped with ABS and torque management TCS.

Major system components include Electronic Brake Control Module (EBCM), speed sensors mounted at each wheel, 3 instrument cluster warning indicators, Driver Information Center (DIC), brakelight switch mounted at brake pedal, TCS on/off switch located in glove box, solenoid valve relay and pump motor relay located on EBCM, and Brake Pressure Modulator Valve (BPMV) assembly. BPMV assembly houses electric pump motor and solenoid valves. Combined EBCM/BPMV assembly is located on left front side of engine frame rail.

Additional components include steering wheel position sensor located at base of steering column, lateral accelerometer located under front passenger seat, and yaw rate sensor mounted under rear package shelf.

NOTE: For more information on brake system, see appropriate DISC & DRUM article.