Conditions for Running the DTC (w/LLT)

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The engine speed is greater than 80 RPM.
The ignition voltage is between 8-18 volts.
The injector has been commanded ON and OFF at least once.
The DTCs run continuously once the above conditions are met.