HI there I can lower the passenger side front window from the drivers master switch but not raise it. The passenger window is fully functional from the right front window switch. I've looked at both window switches, and they appear good no burn marks or excessive scraping on the contact pads of there circuit board. I haven't had a chance to do a continuity check on the left front door wiring harness yet but all checks out for the right front door.
Something that seems odd is that when I unplug the green connector to the passenger multi plex module. The right front window lowers completely and cannot be overriden. Is this normal Or does that mean there is a problem with the drivers multiplex?module? This problem occurred after my van was hit and repaired on the passenger side( both right front and sliding doors were replaced). Any insight would be greatly appreciated.

 

Sounds like a wiring issue could easily have a break in the wirie to the passengers side, usually in the rubber door jam boot. It could be cut or corroded and can cause the issue. If you have continuity then check continuity while opening and closing the door while activating the switch you may have an intermittent issue that is only there under certain conditions (door open or closed). Hope that helps.