Title: Test the ABS wheel speed sensors, and circuits.
Course: Diesel Equipment Technology III (20107-III) > Section: Brakes: Servicing the Air and Hydraulic Antilock Brake Systems (ABS) and Automatic Traction Control (ATC)

Testing should include determining the braking components involved and their proper operation, including

- wiring harness
- tone ring
- sensors.

ASE 3: III. Drive Train: I. Vehicle Dynamic Brake Systems (Air and Hydraulic): Antilock Brake System (ABS), Automatic Traction Control (ATC) System, and Electronic Stability Control (ESC) System, Automatic Emergency Braking (AEB) System (P-3)

Process/Skill Questions:

- What are the components of the ABS system?
- How does the wheel-speed sensor operate?
- What would debris build up in a tone ring cause to happen?
- What would metal shavings on a sensor cause?