Pop the switch out on the dash and find the power wire, IIRC there is a wire for up and one for down, jump the hot lead to one then the other and listen for the pump to run. I should add to release the top latches when doing these tests.
Oh wait, there's more.
Pull the well liner and you'll see the pump and some plastic lines, look for oil in this area, there are two rams, one on each side.
Is the top down now?