you must remove the door panel, I believe that the screws are hidden in the door handle, door grip, and behind the speaker cover. The rest of the panel is held in place by plastic pop in clips that can be overcome by pulling on the panel edges. Once inside remove the plastic water proofing and the motor and track assembly is held in place by 10mm screws and 5 or 6 which hold the assembly to the door and two of which are screwed into the glass. The rest of it will be evident once you're in there.
If it is electric windows it is the motor which needs replacing or it could be the regulator
Busted switch, motor or wiring.
Window motor i'd say. Both of mine have given up. €270 from Toyota for one, they can be had for £20 from eBay
Plastic thing that attaches window glass to the window motor might be broken.
Bad motor? Check to see if you are getting powerBad switch?Open wire to motor?
A electric motor that moves the (window) wiper to clean the window.
Check if there is voltage to window regulator motor; if there is replace motor.
The if that window is the only one not going up and down, its the motor, or maybe even a short in the wiring. ** My 4 door went out one window at the time.
the window motor could be busted or a fuse could have blown.
have someone check the wiring of the window control panel, if its not that, its your window motor, for a '90 a used motor from a junk yard probably wouldn't be more than 30 bucks
how to replace1994 grand drivers side power window motor
don't just replace the window motor replace the whole car. get a hybrid or something