How to test a fuel pump on a 2000 Ford Taurus Electronic Returnless Fuel System. How to test a fuel pump driver module. This is a unique fuel system, in that is does not have a fuel pressure regulator. Fuel pressure is controlled by varying the speed of the fuel pump motor. This is done by a device called a fuel pump driver module. This driver module receives signals from the engine computer which tell it how much pressure is desired. Something else unique to this design is the use of a fuel rail pressure sensor. One advantage of having this sensor is being able to viewing fuel pressure on scan data.

Engine Performance Diagnostics chapter 15 pages 11-19

symptoms 50

  • no start, no fuel pressure

fix 50

  • replace faulty fuel pump

test shown enh 50

  • how to test for spark
  • how to test fuel pressure on a system with no pressure regulator
  • how to test a fuel pump driver module on a Ford
  • how to test fuel pump power and ground
  • how to test an inertia switch on a Ford
  • how to test the PCM control signals to the FPDM

Tools used

  • incandescent test light
  • backprobing pins
  • graphing multimeter or lab scope
  • fuel pressure gauge (test kit)

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(Chapters 14, 15,16) Fuel Delivery and Fuel Pressure Testing

Related videos:

Ford Electronic Returnless Fuel System Diagnosis (Part 2):


No fuel pressure diagnosis and testing (electronic returnless system) - Ford :


Fuel Pump Electrical Circuits Description and Operation:


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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available as an eBook or paper book.

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