Q45 Fuel Pump Issue

[Nismo_Freak]

94 Q45 w/ Traction Control

The car has no fuel pump operation at the "ON" position in the ignition.

I suspect a faulty fuel pump controller.

I need to know the wiring diagram for the rear fuel setup.

Fuel pump power Fuel pump ground (should go to pinout on controller yes?)

Assuming it is getting full voltage I am safe to assume that the fuel pump controller is at fault correct?

[Q45tech]

The 12+ on pump goes to FPrelay, the pump negative goes to controller...........where is is grounded thru the [equivalent electronic variable resistor in FPCU.

The pump could be bad you just unplug from FPCU and ground the pump negative wire. Careful as some pins go to ecu.

Detailed drawings in FSM.

Usually 99 out of 100 the dead pump means a dead pump and FPCU or at least a critically weakened FPCU........that could decide to fail soon with a new pump.

[elwesso]

Alan. Email me and I'll make sure you get a FSM.