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hello gurus, pertaining to the fuel pump (speed) relay, should this particular relay be closed once the key is in the ignition and put in ON position?
im asking because im having issues with the fuel pump, i do not hear it running when ignition is set to ON.
however fuel pump does run when i have GND and F/P jumpered in the diagnostics box
diagnostics steps taken: jumped GND and F/P
verified:
- NF02 closes when ignition is in ON
- NF01 stays OPEN when ignition is in ON
NF01 aka Fuel Pump (Speed) Relay NF01 aka Fuel Pump (Speed) Relay OPEN NF02 OPEN NF02 CLOSED
the FD is setup so that when the N.O. relay is ON power goes through the resistor, and pump voltage will be low.
if the relay fails, or is off, the power just goes right to the pump.