Circuit Description
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.
When you turn ON the ignition switch, the control module enables fuel pump relay which powers fuel pump on. Fuel pump remains on as long as engine is cranking or running and control module receives ignition reference pulses. If there are no ignition reference pulses, control module shuts fuel pump off within 2 seconds after ignition was switched to ON position or if engine stops.