Hello and welcome to 2CarPros. Personally, I'd put money on a bad switch in the passenger door. I'm attaching images pulled from AllData detailing how to go about testing the switch using a test light.
As for the window lock switch, AllData doesn't show one being there. But that doesn't mean much because AllData doesn't always detail whether such little things are there or not. Usually if Ford has one, its integrated with the master (drivers) window switch.
If you don't have a test light, a multi-meter or volt meter will work as well. Or you can get a test light or multi-meter at the local auto parts store, Sears, Lowes, Home Depot, and so on.
Check into that and let us know what you find.
Images (Click to make bigger)
Wednesday, April 10th, 2019 AT 7:05 PM