LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Engine Controls - Theory & Operation) >> Computerized Engine Controls (Gasoline Engines) >> Input Devices >> Fuel Pump Feedback
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Pump Feedback

WARNING: This page does not describe the selected car, but rather 33 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.

PCM monitors fuel pump circuit between fuel pump relay/oil pressure switch and fuel pump. This enables the PCM to determine if fuel pump is being energized by fuel pump relay or back-up oil pressure switch. A failure in this monitored circuit results in the setting of a related diagnostic trouble code in PCM memory.

scientia non olet · About LEMON Manuals