Title: Diagnose the ABS electronic control(s) and components.
Course: Diesel Equipment Technology III (20107-III) > Section: Brakes: Servicing the Air and Hydraulic Antilock Brake Systems (ABS) and Automatic Traction Control (ATC)

Diagnosis should include

- confirming that the vehicle performs the ABS self-test before beginning the test drive
- confirming that the brake pedal has the proper amount of resistance when pressed.

Process/Skill Questions:

- What would cause a spongy, weak, or no-brake pedal?
- What might cause a hard brake pedal with little effort applied to the brakes?
- What do the brakes feel like when the ABS system engages?