Idle Air Control (IAC) Motor

NOTE: Idle Air Control (IAC) motor operation can be tested using a scan tool.

CAUTION: Proper safety precautions must be taken when testing the IAC motor.


- Set the parking brake and block the drive wheels

- Route all scan tool cables away from the cooling fans, drive belt, pulleys. and exhaust components

- Provide proper ventilation while operating the engine

- Always return the engine idle speed to normal before disconnecting the exerciser tool.


- Follow scan tool manufacturer's instructions for testing the IAC motor.