Idle Speed/Throttle Actuator - Electronic: Testing and Inspection

IAC Connector:

Test:

1. Warm up the engine.
2. Check if a click noise is heard and the engine speed increases to approx. 1,200 rpm when the idle air control (IAC) solenoid valve connector is disconnected at idle speed.
3. If the engine speed does not change, replace the idle air control (IAC) valve.
4. Check the resistance of the idle air control (IAC) solenoid valve.

Resistance: 11 - 13 Ohms (at 68°F [200°C).

5. If not as specified, replace the unit.