Anti-Lock Brake System

During normal driving and braking operations, ABS-VI system functions like a conventional braking system. Each wheel speed sensor constantly sends AC voltage signal to the EBCM, which then translates this information into wheel rotating speed. When EBCM detects wheel lock-up, it activates the appropriate solenoid to regulate hydraulic pressure to each wheel. The pedal pulsation normally felt with ABS application should be present.

The BRAKE, LOW TRAC and ANTI-LOCK or ABS INOP warning lights should come on when ignition is turned on and vehicle is started. If any light stays on more than 30 seconds after vehicle is started, system malfunction is indicated. See DIAGNOSIS & TESTING .

Red BRAKE warning light comes on if parking brake is applied, brake fluid is low, or accumulator pressure is low. Amber LOW TRAC warning light comes on when ABS is functioning; this is a warning to driver of slippery road conditions. LOW TRAC will stay on approximately 4 seconds after ABS stops working. Amber ANTI-LOCK or ABS INOP warning light is controlled by EBCM. If problem is detected in system, ANTI-LOCK or ABS INOP light will either flash or light continuously. If ANTI-LOCK or ABS INOP light flashes, a problem exists which will not immediately hamper system operation. If ANTI-LOCK or ABS INOP light comes on continuously, a more serious problem has been sensed, and ABS operation will be disabled.