Diesel Data: Automotive Repair

25B Automatic Idle Speed Motor


1. Turn the ignition switch Off.
2. Disconnect the throttle body 6-way connector and connect an ohmmeter between the terminals of the 6-way connector that go to the idle motor.
3. If the ohmmeter shows some resistance, Perform Step C.
4. If there is no motor movement, Perform Step B.
5. If the ohmmeter shows an open circuit, replace the idle motor.