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Home >> Saturn >> 2002 >> L100 >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Engine Controls - Theory & Operation) >> Computerized Engine Controls >> Input Devices >> Fuel Pump Feedback
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Fuel Pump Feedback

WARNING: This page is about a different car, the 2003 Saturn LW300 and 2003 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

ECM monitors fuel pump circuit between fuel pump relay/oil pressure switch and fuel pump. This enables the ECM 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 ECM memory.

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