Sounds simple but these window switches and wiring are quite complex.
The drivers side switch (6 pin) for the passenger window should have a 12v supply in BOTH the yellow wires (ignition on) If you dont have a supply at these wires, first check the fuses. If the fuses (30A Green) are ok, then remove the plug from the door shut and pull back the rubber sleeve around the wiring. Check to see if there are any broken wires in this loom.
If these are OK then do the same with the N/S plug and loom, although the colours in the N/S loom are of a different colour (BROWN and GREY) Check to see if you have 12volts here.
You will also need to check the continuity/resistance of the window motor.
I cant diagnose this fault for you here but if you would like some more help, then PM me with your email address so I can send you a wiring diagram and what reading to expect at each wire when using an OHM/VOLT meter.
Bob RTE