Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2003SABLE GS, 4D WAGON, 3.0 2, AX4SREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - THEORY & OPERATION - CNG, FLEX-FUEL & GASOLINECOMPUTERIZED ENGINE CONTROLSFUEL PUMP DRIVER MODULE
2003 Mercury Sable GS, 4D Wagon, 3.0 2, AX4S
Fuel Pump Driver Module
2003 Mercury Sable GS, 4D Wagon, 3.0 2, AX4SSECTION Fuel Pump Driver Module
NOTE:
On LS and Thunderbird, Fuel Pump Driver Module (FPDM) functions are incorporated into Rear Electronic Module (REM). Fuel pump operation is same as applications using the stand-alone FPDM. REM will communicate diagnostic information through BUS (+) and BUS (-) circuits instead of using a fuel pump monitor circuit.
FPDM receives a duty-cycle signal from PCM and controls fuel pump operation in relation to this duty cycle. This results in variable fuel pump operation speed. The FPDM sends diagnostic information to PCM on fuel pump monitor circuit.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.