2002 gtx 4 tec fuel pump not working

[jessie00721]

Hello,

Just finished putting this engine back into the ski and my fuel pump does not work anymore. At the connector to the pump it appears to have 2 grounds and 1 pin at 5volt and the other at 12 volt. Is that correct going to the pump? If so perhaps the fuel pump just went bad? Is there any other sensors that stop the pump from operating? You dont hear the fuel pump at all. Thanks for any input.

 

[jessie00721]

Just a quick update. Rechecked the power at the plug and this is what I have.

Pin A: 12 Volt (Battery Voltage)
Pin B: 5 Volt
Pin C: Direct to ground
Pin D: Nothing, No power and No connection to ground. This pin according to the wiring diag. I have goes to the ECU. So I dont know it sends a signal or recieves one?

Still no fuel pumping to rail and can not hear pump.

 

[Dennis]

The fuel pump uses pin A and pin D. Pin A should have batt voltage. The fuel pump is turned on by the ECU grounding pin D. Pin D should show to be grounded when you are cranking the engine. Pin D wire (brown and pink) is pin B-29 at the ECU "B" connector.