Window Will Not Close From Key Switch, Otherwise Operates

With ignition switch "ON" and tailgate door open, place key switch in "UP" position. Using a grounded 12-volt test lamp, probe Lt. Blue wire at key switch. If lamp does not light, replace key switch. If lamp lights, probe Lt. Blue wire at cutout switch.
If lamp does not light, check for open Lt. Blue wire between key switch and cutout switch. If lamp lights, check for open in Lt. Blue wire between cutout switch and window motor. If wire is okay, replace cutout switch.