Practice question

A school bus diesel does not crank and there is no click from the starter solenoid when the key is turned. After verifying the batteries are good, the technician should next check:

  1. The DPF differential pressure sensor
  2. The SCR catalyst
  3. The starter control circuit, including the key/start switch, neutral safety/start interlock, relays, and solenoid feed
  4. The radiator cap

Answer: C — The starter control circuit, including the key/start switch, neutral safety/start interlock, relays, and solenoid feed

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: ASE S2 Diesel Engines (School Bus) Practice Questions - ASE S2 - Diesel Engines (School Bus) Certification Exam →