power window in/op

My passenger side power window on my 99 Amigo doesn't work. It has been that way since I bought it. I thought it was probably the switch unit but I read somewhere that there might be a bad relay or something. Anyone know just what this might be? Hopefully it is an easy fix.....

I had a similar problem on our 2000 rodeo. Was all set for a headache filled afternoon of trouble shooting. I took the door panel off and leaned that the black sticky tar like glue that Isuzu used to glue the sheet of plastic to the door behind the door panel had melted and was gluing the window shut.

I just cleaned everything up and it worked fine. Hope yours is that simple.

The black stuff isn't the problem with mine, b/c the window works from the passenger side switch(I guess I should've mentioned that before). It has to be an electrical problem somewhere.....but where???