Rear passenger window on '03 QX4 won't go up

[9899pathfinder]

Passenger rear window on '03 QX4 goes down but not up from master switch. Goes up fine with switch on the rear passenger door itself. All other windows work fine. Any ideas why this is?

[VStar650CL]

That can only be a bad master switch. The fact that the slave switch works in both directions means the ground path through the master is good when the master is "neutral". That means it has to be the "up" throw inside the master isn't making power contact. You can try opening up the switch and cleaning the circuit board, that often works.

[9899pathfinder]

My thought too. Attached is a pic of the board. Any suggestions on cleaning? Probably the contact prongs. What about the input connectors from the wiring? Thanks.

[VStar650CL]

You need to disassemble that (pull the top off) to get at the switches. However, that type (with the molded conductors) usually doesn't use sliding contacts. They usually use discrete switches and it may not be cleanable.