Practice question

An idle air control (IAC) or fast-idle device on an EFI engine functions to:

  1. Adjust the chain slack
  2. Regulate the idle speed by metering air around the throttle, especially during warm-up
  3. Charge the battery
  4. Cool the brakes

Answer: B — Regulate the idle speed by metering air around the throttle, especially during warm-up

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

Practice more: Red Seal Motorcycle Technician Practice Questions - Red Seal Motorcycle Technician (Interprovincial Red Seal Exam) Exam →