Fuel Pump Driver Module
The Fuel Pump Driver Module (FPDM) is attached to a bracket and secured by 2 nuts. The bracket is secured to the inner side of the rear right side member reinforcement panel.
The fuel pump operation is regulated by the FPDM. The FPDM is controlled by the Powertrain Control Module (PCM) using a Pulse Width Modulation (PWM) output signal.
The FPDM has a switched power supply from the fuel pump relay, located in the Rear Junction Box (RJB).
The following conditions will energize the fuel pump relay:
- Opening the driver door.
- Operating the ignition switch.
- Operating the ignition switch with applied brakes. The driver starts the engine.
The FPDM supplies power to the fuel pump via hardwired connections. The FPDM adjusts the power to control the speed of the fuel pump, thus the fuel pressure and flow in the fuel delivery line.