Has the car got an external fuel filter near the tank? if so disconnect the pipe then run the pipe to the can then sut the ignition on. Pump will run and the can will fill.
Eeerrmmm STUMPED now :-( Dont know for sure, is just a basic 1.4 Renault Megane rn if that helps.
Hate it now and almighty pis**d off with it.