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 - ECOSPORT 1.5L, KA
The output signal from the PCM or BCM controls the electric fuel pump. With the PCM power relay contacts closed, VPWR is sent to the coil of the fuel pump relay. For electric fuel pump operation, the PCM or BCM grounds the FP circuit, which is connected to the coil of the fuel pump relay. This energizes the coil and closes the contacts of the relay, sending B+ through the FPPWR circuit to the electric fuel pump. When the ignition is turned ON, the electric fuel pump runs for about 1 second and is turned OFF by the PCM or BCM if engine rotation is not detected.
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.