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 W/Traction Control System: Description
Anti-Lock Brake (ABS) and Traction Control (TRAC) system consists of ABS/TRAC Electronic Control Unit (ECU), actuator, solenoid relay, motor relay, TRAC OFF switch and speed sensors. See Fig 1.
An ABS warning light, SLIP indicator light and TRAC OFF indicator light is located on the instrument cluster. Indicator lights come on for 3 seconds as a bulb test when ignition is turned on. A primary system check is performed after each engine start and initial vehicle speed exceeds 6 MPH. An ABS actuator noise is heard during this period of time. A clicking noise may occur in engine compartment when engine is started. This noise is the traction control system performing an initial diagnostic check. These noises are normal.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.