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.
Functional description
The fuel pump control module is a type of control electronics and not a control unit. The fuel pump control module is therefore not a bus user.
The Digital Engine Electronics (DME) communicate with the fuel pump control module via a pulse-width modulated signal. The electric fuel pump is a brushless three-phase motor. The fuel pump control module activates the three-phase motor.
The pulse-width modulated signal is also used for carrying out diagnosis on the fuel pump control module. Faults are stored in the DME.
The electric fuel pump is an in-tank unit; its function is to supply fuel to the engine. The electric fuel pump is a brushless three-phase motor.
The electric fuel pump is activated as needed. The DME employs driver demand and instantaneous engine operating conditions to calculate the quantity of fuel required at any specific juncture. The required fuel quantity is transmitted to the fuel pump control module as a pulse-width modulated signal.
| Item | Explanation |
|---|---|
| 1 | Fuel pump control module |
| 2 | 10-pin plug connection |
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.