Anti-Lock Brake System With Traction Control System - DELPHI Db 7: Description

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

The Delphi DBC 7 Anti-Lock Brake System/Traction Control (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 engine fuel/timing management to provide improved traction and vehicle stability. The TCS uses front brake intervention to assist the wheel slip condition.

Major system components include Electronic Brake Control Module (EBCM), wheel speed sensors, instrument cluster warning indicators, brakelight switch, TRAC on/off switch, solenoid valve relay and pump motor relay, and Brake Pressure Modulator Valve (BPMV) assembly. BPMV assembly houses electric pump motor and solenoid valves. EBCM and BPMV assembly is located on left rear of engine compartment.

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