Passenger Window Problem
On the passenger door, look for a broken wire in the door opening.
So you found power on one of the two wires. That was with holding the switch in one position, either up or down, right? Try it again, now hold the switch in the opposite position as before, now the other wire that had no power the first time should now have power. If not, probably a break in the wiring, look in the door jamb. If not a broken wire in the passenger door, it could be in the driver's door.
You see, the power is reversible to the window motors. When power goes down one wire to the motor, the other wire serves as a ground. The ground path goes back to the driver's master switch, where the ground for all the windows originate. Ground wire from master switch carries power to ground somewhere inside the cabin. Since other windows work, your ground is good. but the pass. window is, or seems to be missing a wire. Check by looking for power on both wires, but the window switch has to be opposite from the first time for the second wire to have power. Only if both show power is the wiring good, but they wont both show power at the same time-the switch has to be in right position to show power.
I hope this is clear, post back if you don't understand.
Oh yes, use the ohmmeter function of your multi-meter to check the wires' integrity. Just don't have any power on any of the wires you are checking, but check between the pass. door and the driver's master. Check both wires that go to the passenger window. That should tell you if you have a break in the wiring.
