1996 240sx base: passenger window unresponsive

[TerminalVelocity]

Recently I started experiencing issues with my passenger side door window, described below.
I am unable to move the window up or down from the passenger control panel. At first I was able to move the window down from the driver side control panel (but not up), and now I can not move it in either direction. The window lockout button is not engaged.

When I apply +-12V directly to the window motor, it functions properly. Each switch has +-12V coming out of them when pushing up/down on the switch. I checked continuity across the switch to motor connector and it checks out, so I know my connection is good.

At this point I'm stumped. Any ideas on what I might be missing/what the issue is?

Edit: Additionally, with everything connected and the window switch pushed, reading voltage to the motor results in 0V. This leads me to believe it's an amplifier issue?

[TerminalVelocity]

3 day bump

[s14280zx]

Mine went bad once on my 95. The passenger one didn't work, but the driver one worked it. I bought a used one on ebay pretty cheap and it worked ever since. Hopefully you'll get lucky like I did.

[TerminalVelocity]

To clarify, you bought a new amp or something else?

[s14280zx]

I bought a used passenger switch on ebay. Got it pretty cheap. My 95 pathfinder window switch went out, too. It's pretty common for them to go bad.

[TerminalVelocity]

oh I see. I've tried it with a known good switch and no luck.
Thanks for the suggestion though.