Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Anti-Lock Brake System: Description
The 4-wheel Anti-Lock Brake System (ABS) is designed to allow the vehicle to stop in the shortest possible distance while maintaining improved steering control under most conditions. Some models are equipped with traction control, which is integral with the anti-lock brake system.
ABS system consists of an Anti-Lock Brake Control Module (ABCM), Hydraulic Control Unit (HCU), 4 wheel speed sensors and toothed sensor rings, brake light relay, ABS and BRAKE warning lights, fluid level switch, brake on/off switch, and traction control switch. The ABCM and HCU are mounted together in one unit. The traction control valve block is 6" (152 mm) long, has 4 outlet ports and uses M12 (6-mm) tube nuts on tubes going to master cylinder.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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