What year and model are you working on? Most of those body modules have to be programmed at the dealer, Autel and Snap-On also have some OEM level tech that will do the job I can program any replacement ECU/PCM or SKIM/ body module through 2015 model years with my Autel system.
2009 JKU Sahara. I think I need help tracing if there is a ground fault. I was thinking of starting at the door connector, front and back end. It's just I do not know what I am doing with the meter... where to place the leads etc. I need to find a pin code, so I am told. If I know which wire controlled which function, I could work from there.