Try removing your front cowel(where the windshield wiper motor is) and then run the wipers. It is only a few screws and you can visually check the motor. If there are some parts moving and they still aren't working, then I would say something is stripped and needs to be replaced. I don't know if the wiper motor gets changed from model to model, but you probably can get a motor for that at a junk yard for cheap. It is not a complicated system. Unless we are talking electrical.