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Using DVOM

WARNING: This page is about a different car, the 2002 Dodge Stratus and 2002 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect IAC motor. IAC motor is located directly below throttle opening. Measure resistance between IAC motor connector terminal No. 2 and either terminal No. 1 or 3 (component side). See Figure . Resistance should be 28-33 ohms at 68°F (20°C). If resistance is not as specified, replace IAC motor. If resistance is as specified, go to next step.
  2. Measure resistance between IAC motor connector terminal No. 5 and either terminal No. 4 or 6 (component side). Resistance should be 28-33 ohms at 68°F (20°C). If resistance is not as specified, replace IAC motor. If resistance is as specified, test is complete.