Conditions For Setting DTC

WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

The actual engine speed is 100 RPM less than the desired engine speed for more than 8 seconds for each test.
PCM detects the IAC test failed 4 consecutive times per ignition cycle.
The vehicle must enter the above criteria and leave the criteria for 1 second in order to complete one test.