Pull the inner door panel and unplug the window motor. Get a power source (booster pack, spare battery) and use two wires to power up the motor manually so it goes up then leave it unplugged until the problem is fixed.
Most used.
It could be the switch,power source to the switch, or the motor is burnt up. More than likely the motor is the problem since the driver side get a great deal more use than any other.
I have a '99 passport and the driver side did the same thing, luckily i have a good friend that is an electrical engineer and he was able to spot and solder a small break in the wiring on the switch...
Behind where you use the handle to pull to open the door is a little cap. Use a screw driver to take it off and take out the screw you will find behind it. From there, start to take out the screws...
I changed the doors on my 89 caprice.To change the electric switch you have to pull most of the interior panel loose from the door to get at the back of the switch .there was a blue knob on the back...