Anti-Lock Brake System: Description
CAUTION:
See ANTI-LOCK BRAKE SAFETY PRECAUTIONS
article in GENERAL INFORMATION.
NOTE:
For more information on brake system, see BRAKE SYSTEM article.
The Anti-Lock Brake System (ABS) is designed to prevent wheel lock-up during heavy braking. This allows operator to maintain steering control while stopping vehicle in shortest distance possible. System consists of an ABS Electronic Control Unit (ECU), hydraulic unit, ABS valve relay, ABS motor relay, wheel speed sensors, ABS rotor, Data Link Connector (DLC), brakelight switch and ANTI-LOCK warning light. See Fig 1 . ABS has a self-diagnostic system to indicate a system malfunction by monitoring stored ABS ECU Diagnostic Trouble Codes (DTCs). See RETRIEVING DTCs under SELF-DIAGNOSTIC SYSTEM .