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 Bosch 2U Anti-Lock Brake System (ABS) is designed to prevent wheel lock-up during heavy braking. This provides improved driver control by reducing the distance required to stop vehicle.
Major component parts of system include the following: Electronic Brake Control Module (EBCM), 3 wheel speed sensors, 2 dash-mounted warning indicators, Overvoltage Protection (OVP) relay and hydraulic modulator assembly. The hydraulic modulator assembly, also known as a hydraulic unit, houses electric pump motor and solenoid valves.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.