my fuel pump realy just went on my nova.
its actually quite common but mine was because it got water in it.
u can probably take the cover off the relay and see the insides.
the tracks on the pcb may show signs, and will probably smell of a nasty burning/singeing smell.
only a blaitent sign or water damage or something similar would mean it definately aint ur pump.
because with electricity its now how much current u throw at a component. its how much it will pull.
so if the pumps fucked it would of pulled more than the usual 10amps or so and ruined the relay.
i'd be taking the relay apart right now and see what sort of condition its in.
a brand new original wehrle relay for mine was only £9.95