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.
Fuel Pump Control - ERFS: Notes
The FP signal is a duty cycle command sent from the PCM to the fuel pump control modules. The fuel pump control modules use the FP command to operate the fuel pumps at the speed requested by the PCM or to turn the pumps OFF. When the ignition is turned ON, the electric fuel pumps run for about 1 second and are requested OFF by the PCM if engine rotation is not detected.
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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.