Fuel Pump Driver Module (FPDM)

NOTE: For the LS, the FPDM functions are incorporated in the rear electronic module (REM). The fuel pump operation is the same as for applications using the stand-alone FPDM. However, the REM communicates diagnostic information through the communication link instead of using a fuel pump monitor (FPM) circuit.

NOTE: The Ford GT uses 2 FPDMs to control fuel for the dual-injection fuel delivery system. The PCM outputs only one fuel pump duty cycle which is used by both pumps. The PCM individually monitors the FPDMs through their fuel pump monitor circuits. Both FPDMs are mounted on the same bracket. The FPDM mounted in the upper position on the bracket is referred to as FPDM and the FPDM mounted in the lower position, is referred to as FPDM2.

The FPDM receives a duty cycle signal from the PCM and controls the fuel pump operation in relation to this duty cycle. This results in variable speed fuel pump operation. The FPDM sends diagnostic information to the PCM on the fuel pump monitor circuit. For additional information on Fuel Pump Control and the Fuel Pump Monitor, refer to FUEL SYSTEMS .