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Fuel pump delivery module probing giving unusual results

I have a 2007 Land Rover LR2/ Freelander 2 i6. The car is stalling and has no power, mechanic seems to think I need to buy a new fuel pump. Before buying one, I thought it would be a good idea to do some testing to eliminate wiring and electrics. So here's where I'm stuck now: - On the Fuel pump control module itself, I get 12+ volts on the pwr input from the relay, I have a good ground against batt -ve coming into the unit, I have a good steady 12+ volts output to the fuel pump, then I have a 'dynamic -ve outputting to the fuel pump. The fifth terminal is dancing around 5V coming from the ECM. -I call the -ve dynamic because it is dancing, at around the same voltage as the ECM signal measured against Ground, +ve feed to pump, -ve batt terminal as well as +ve batt terminal. -Is this the normal operation of the module? -Are these the proper ranges of voltages for these units?

Posted by Tichafa on

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johnjnail

john nail

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SOURCE: Fuel pump relay will not

if you ground the tan/light green wire at the relay or at the EEC IV self test conector will the pump run then? and if the pump runs will the engine start?

Posted on Sep 02, 2011

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