Preliminary Inspection
- Check that brake fluid level is normal. Check for any fluid leaks. Visually inspect tire size.
- Check operation of booster, brake pad and rotor and other mechanical brake system components, which may affect anti-lock operation.
- Check if 4WD light comes on by turning the key switch ON and shifting to 4WD position by pressing the 4WD switch.
- Check anti-lock brake system (ABS) related ground points.
- Check system sensors, wire harnesses and connectors for proper installation, routing and connection. Ensure all system fuses are okay.
- Repair as necessary. Reconnect all components and ensure all components are properly mounted.
- If cause of faulty operation cannot be located with preliminary inspection, ABS electronic control system must be checked. See SYSTEM OPERATION CHECK .