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.
Traction Control: Anti-Lock: Description
Anti-Lock Brake System (ABS) controls brake fluid pressures to each individual front brake caliper and rear brake calipers during a panic stop to prevent wheel lock-up. System consists of actuator, solenoid relay, pump motor relay, ABS/Traction Control/Vehicle Skid Control Electronic Control Unit (ABS/TRAC/VSC ECU), and a speed sensor at each wheel. See Fig 1. Vehicle is equipped with TRAC and VSC. The ABS and TRAC system helps vehicle stability during braking and acceleration. VSC system helps vehicle stability during cornering. If a system fault occurs, the ABS/TRAC/VSC ECU stores a Diagnostic Trouble Code (DTC) that can be retrieved to diagnose malfunction.
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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.