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Old 01-16-2008, 13:55   #1 (permalink)
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trouble code

hello,I have a fuel pump module code what can I do to solve this problem.
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Old 01-17-2008, 11:50   #2 (permalink)
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Re: trouble code

Well start by providing the code and the year and the engine you have.......
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Old 01-18-2008, 11:15   #3 (permalink)
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Re: trouble code

P1237 is the code and its a 2000 Taurus, 3.0 liter flex fuel
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Old 01-18-2008, 12:10   #4 (permalink)
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Re: trouble code

P1237 - Fuel Pump Secondary Circuit Malfunction Diagnostic information will be set through SCP. Indicates that the FPDM has detected a fuel pump secondary circuit fault. The FPDM will send a message to the PCM through the FPM circuit, indicating that this failure has been detected. The PCM will set the DTC when the message is received.

Open or shorted FP PWR circuit
Open FP Rtn circuit to FPDM
Open or shorted circuit in the fuel pump
Locked fuel pump rotor
Damaged FPDM

The FPDM sends a 75% duty cycle (750 msec ON, 250 msec OFF) through the FPM circuit to the PCM while the fault is being detected by the FPDM. If the fault is no longer detected, the PCM will return to sending an "all OK" (50% duty cycle) message to the PCM.

The PCM will keep P1237 stored in Continuous Memory.
The FPDM controls pump speed by supplying a "variable" ground on the RTN circuit.
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Old 05-27-2008, 10:11   #5 (permalink)
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Re: trouble code

You need to make sure the fuel pump is getting the commanded voltage when it should and then do an amp draw test to see if the pump is working efficiently. Not easy to do without the right equipment.
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