Where is the fuel pump driver control module located?
In most modern vehicles, the fuel pump driver module (FPDM) can be in one of a few places depending on the make, model and year. The most common arrangement is that the FPDM is integrated with the fuel pump inside the fuel tank. Some designs place a separate FPDM in the engine bay, near the firewall or fuse box. For a precise location, refer to the vehicle’s owner’s manual or a factory service manual for your specific model and year.
Common configurations explained
The following outlines typical FPDM placements you may encounter on contemporary cars, trucks and SUVs. This helps you orient where to look based on your vehicle’s design.
- Integrated fuel pump module inside the fuel tank: In many modern cars, the FPDM rides as part of the pump assembly and is not a separate, external box.
- Standalone FPDM in the engine bay: Some makes mount a separate module near the fuse/relay box, along the firewall, or adjacent to the engine. This design keeps the electronics outside the fuel tank.
- External location behind rear seat or in the trunk: A few models place the FPDM in an accessable area if the pump is in the tank but the electronics are routed to an external module.
Location choices are driven by packaging constraints, serviceability, and fuel-system architecture. Regardless of placement, the FPDM’s function is to regulate the pump’s voltage and current to optimize performance and prevent overheating.
How to locate the FPDM on your vehicle
Use these steps to identify the exact FPDM location for your specific model. Start with the official documentation and then perform a careful physical check if you have the requisite safety measures in place.
- Consult the vehicle’s owner’s manual or factory service manual for the exact FPDM location by model and year.
- Inspect the fuel-pump access point: many cars with the pump in the tank provide access via a panel in the rear cargo area, under the rear seat, or behind the rollover panel; the FPDM, if external, will be connected to the pump wiring harness near this area.
- Check the engine bay for a small black or grey module labeled FPDM, FPDCM, or “Fuel Pump Driver.” It is often mounted near the firewall, near the fuse box, or along the strut tower area depending on the vehicle.
- Use wiring diagrams or a factory diagnostic tool to confirm the exact module location if you cannot locate it by sight alone.
Once you’ve identified the probable location, follow manufacturer guidance for any inspection or service to avoid fuel-system hazards. If you’re unsure, consult a qualified technician.
Safety and service considerations
Working with the fuel system requires caution. If you’re attempting to locate or service the FPDM yourself, keep these safety guidelines in mind:
- Relieve fuel pressure and disconnect the battery before touching fuel-system components.
- Work in a well-ventilated area away from sparks or open flames.
- Avoid static discharge and use proper tools designed for automotive electrical work.
Improper handling can create fire risk or damage to the vehicle’s electrical system. When in doubt, seek professional service.
Summary
The exact location of the fuel pump driver module varies by vehicle. Most modern designs place the FPDM inside the fuel tank as part of the pump assembly, but some models mount a separate FPDM in the engine bay or in a rear-area compartment. To locate it precisely, check the owner’s manual or service manual for your specific make, model, and year, and visually inspect the likely areas in the engine bay or fuel-tank access points.
