Preliminary Inspection

Begin diagnosis with a basic visual inspection of brake fluid level, tire size and other mechanical brake system components which may affect anti-lock operation. Check system sensors, wiring harness and connectors for proper installation, routing and connection. Ensure all system fuses are okay. Repair as necessary.

If cause of faulty operation cannot be located with basic diagnosis, ABS electronic control system must be checked. See SELF-DIAGNOSTIC SYSTEM .

When ignition is turned ON, ABS warning light and BRAKE light should come on, then go out after 3 seconds. If ABS warning light or BRAKE light does not operate as specified, see SYSTEM TESTS . Check the warning buzzer. When depressing the brake pedal repeatedly it may turn on the brake warning buzzer.