Does any one out there know wh
Does any one out there know what signal the ECM uses to control the on /off of the HP fuel pump. I have a problem in that the motor dies and may not restart for a period of time. The HP pump has been replaced and it still fails. If you monitor the negative side of the pump we have Zero volts when the pump is running and when it fails the voltage goes to 12v. What input to the ECM tells it to turn the pump on or off? This is a 2002 f115. The SECOR book that I have says nothing about this and the schematic is just a block diagram.
Any help would be appreciated.
k
Does any one out there know what signal the ECM uses to control the on /off of the HP fuel pump. I have a problem in that the motor dies and may not restart for a period of time. The HP pump has been replaced and it still fails. If you monitor the negative side of the pump we have Zero volts when the pump is running and when it fails the voltage goes to 12v. What input to the ECM tells it to turn the pump on or off? This is a 2002 f115. The SECOR book that I have says nothing about this and the schematic is just a block diagram.
Any help would be appreciated.
k