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Idle Air Control Solenoid

NOTE: Idle Air Control (IAC) solenoid may also be referred to as IAC valve.

Idle Air Control (IAC) solenoid is a by-pass air type. Ensure ignition is off. Disconnect IAC solenoid harness connector. Measure resistance between IAC solenoid terminals. Solenoid has an internal diode and resistance will be infinite if voltmeter is hooked up incorrectly. If resistance is not 6-13 ohms, replace solenoid. If resistance is 6-13 ohms, IAC solenoid is okay. For additional testing and specifications, see TEST KE: IDLE AIR CONTROL VALVE under SYSTEM TESTS in SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article.

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