Isolated Window Functions in 99 Montero Sport XLS

Hi, I am new to forum and have been searching the forum for wiring diagrams for a 1999 Montero Sport XLS. 
 
My problem is, I cannot figure out why the Right-Rear (RR) passenger window won’t function using the switch at the driver’s seat while functioning properly while sitting in the RR passenger seat.  I have taken all the corresponding doors apart and have tested the following components with a DMM;
 
-3-position switch on PCB (Printed Circuit Board) at driver’s door
-entire wiring harness (including connectors and wire)
 
I have not check the switch at the RR passenger seat...however it works so I may be overlooking a problem there.  Therefore, if anyone has the wiring diagram for this vehicle or a solution…PLEASE HELP!
 
Thanks,
 
Anthony

Not a single bit of information available for a 1999 Montero Sport XLS?