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 (ABS)
The ABS module executes control of the anti-lock brakes and full speed traction control functions to enhance driver control of the vehicle. The ABS module manages the interactions between the anti-lock, traction control and engine control systems to optimize the vehicle traction during deceleration and acceleration.
The ABS module continuously monitors and compares the rotational speed of each wheel. The rotational wheel speed is measured by the wheel speed sensor, which electrically senses the pole pairs of the magnetic encoder ring passing the sensor head.
The ABS module is self-monitoring. When the ignition switch is turned to the RUN position, the ABS module carries out a preliminary electrical check. At approximately 20 km/h (12 mph) the pump motor is turned on for approximately 0.5 second. Any concern with the ABS causes the ABS module to shut off, the ABS warning indicator to illuminate, and the power assist braking system to function normally.
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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.