95' S14 Passenger window won't go up

[SrRaycer]

Firstly, I have searched.

Passenger window goes down but not up. It goes down using the passenger door switch but not the driver door switch, and won't go up using either switch. I'm pretty sure the problem is one of the switches but I don't know how to narrow it down. If the problem is one of the switches, how would I repair the switch?

I am able to apply power directly to the motor to put it up, so the motor is fine. The problem is not the window amp solders, I've checked, they only control the driver window anyway.

Thanks in advance.