Idle Air Control Valve

Ensure ignition is off. Disconnect idle air control valve connector. Connect an ohmmeter between connector terminals No. 1 (Blue/Black wire) and No. 2 (Green wire), then between terminals No. 2 (Green wire) and No. 3 (Blue/White wire). If about 9-14 ohms are not present, replace idle air control valve. If about 9-14 ohms are present, see appropriate TESTS W/CODES article.