Escort ZX2 L4-2.0L DOHC VIN 3 (2000)
Fuel Pump Control Unit: Description and Operation
Fuel Tank and Lines
The fuel pump driver module (FPDM) controls the fuel Delivery Module (FDM) in a returnless system. The Powertrain Control Module (PCM) gets
input from the fuel pressure sensor in the fuel rail and temperature readings from the Engine Coolant Temperature (ECT) sensor and the Intake Air
Temperature (IAT) sensor. The PCM then sends a duty cycle signal to the FPDM which results in variable speed fuel pump operation.