The fuel pump gets its current through the inertia switch(crash switch, grey, cylinder formed) in the engine compartment, switched by a relay combination in the upper rear right hand corner in the engine compartment. When trying to start you should measure 13V on the contacts of the inertia sw.
There is a good chance there is a fault in the relay combination, not switching the power, but the pump could just as well be stuck. In latter case you could connect a wire from + on the battery directly to the +pole on the pump(under the car close to the rear wheels) and see if it started to work. And go from there.