Conditions for Running the DTC

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

The ignition switch is in the ON position.
The system enable relay is ON.
Initialization is complete.
The pump motor has been commanded ON, OFF and ON again.