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 Module
The fuel pump is located in the fuel tank. The pump is regulated by the fuel pump control module. The central electronic module (CEM) controls a relay that supplies power to the fuel pump control module. The relay is directly connected on the central electronic module (CEM).
The central electronic module (CEM) communicates with the engine control module (ECM) via the CAN network in order to control the fuel pump. There is also a directly connected cable between the engine control module (ECM) and the fuel pump module. A pulsed signal for fuel pump control is transmitted on this cable.
The central electronic module (CEM) also communicates with the supplemental restraint system (SRS) module via the controller area network (CAN). In the event of a collision, the supplemental restraint system module (SRS) transmits data and the central electronic module (CEM) shuts off the power supply to the fuel pump (FP).
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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.