Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The Engine Speed parameter is 150 RPM more than the Desired Idle Speed parameter for more than 8 seconds for each test.
The PCM detects the IAC test failed 4 consecutive times in one ignition cycle.
The vehicle must enter the above criteria and then leave the criteria for 1 second in order to complete one IAC test.