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 Level Sensor Unit and Fuel Pump: AWD
Fuel Pump
Fuel pump
is integrated with a fuel pressure regulator and a fuel filter. This pump is built into the fuel tank.
ECM controls the fuel pressure via FPCM.
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: Fuel pressure sensor |
Fuel Pressure Sensor
The fuel pressure sensor detects the fuel pressure (actual pressure) of the fuel pump.
The fuel pressure measured by a measuring capacitor coupled with the fuel pressure sensor.
When fuel pressure increase, the gap between the capacitor electrodes decreases. The capacitance, and therefore the signal voltage, thus increase in proportion to the fuel pressure.
The signal voltage serves the FPCM as information about the fuel pressure.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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