Mystique V6-153 2.5L DOHC VIN L SFI (1999)
Fuel Pump Module: Description and Operation
Electronic Returnless Fuel
Fuel Pump Driver Module Applications
Fuel Pump Driver Module Duty Cycle Signals Table
The Fuel Pump Driver Module (FPDM) communicates diagnostic information to the Powertrain Control Module (PCM) through the Fuel Pump
Monitor (FPM) circuit. This information is sent by the FPDM as a duty cycle signal. The three duty cycle signals that may be sent are listed in the
Fuel Pump Driver Module Duty Cycle Signals Table.
Electronic Returnless fuel systems do not return fuel to the fuel tank by means of a fuel return line. There is no fuel pressure regulator and pressure
is cotrolled by continuously varying the fuel pump speed through the fuel pump driver module (FPDM).
