Conditions for Running 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 is running.
The ignition 1 signal is more than 8 volts.
The idle air control (IAC) position is more than 2 counts.
The above conditions are met for more than 0.5 second.