My passenger window ceased to roll up yesterday. It is now stuck open. When I press down on the button, the motor moves it slightly, but when I press up nothing happens. I removed the motor this morning, but is there any way to test it? Is the switch the culpret? Or is it the motor? Also, the interior light fuse blew twice while I was messing with it, does that have anything to do with it? Any help would be greatly appreciated, thanks!