wierd door lock/unlock switch issue - Ford Powerstroke Diesel Forum
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Old 04-07-2014, 05:40 PM
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wierd door lock/unlock switch issue

I just bought this truck last week and I am noticing the driver unlock/lock switch is not unlocking the doors. passenger side does everything fine but my driver door is not. It will lock all the doors fine but not unlock. I took the switch out and tested it and it is sending a ground just fine for both lock and unlock. Find it hard to believe a wire went bad since I am not seeing anything chopped up. Is there some sort of programming that would do this too the lock/unlock switch?
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Old 11-24-2014, 06:53 PM
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I had the same issue. It was actually easy to fix once you know what the problem is and where to fix it. I know you posted this awhile ago but I just fixed it on my newly adquired truck yesterday.
There is a splice on the driver's door lock wire (yellow/violet) and the splice is in the wire harness about 18" from the smart junction box, right down at the bottom of the wiring gutter (passenger side). You need to replace the splice by removing the kick panel (pull straight back, not out), then remove the full length plastic edge cover (those snap straight up). The bundle has about 50 wires in it and the splice is in the yellow/violet wire (two wires down to one wire) in the opening between the seat and the pillar. My splice was at the worst possible place, at the bottom of the gutter an my truck had plenty of mud and old moisture down there.

I moved my wires from the bottom of the pile to the top to keep it dry, you can get waterproof crimp splices, I was in a hurry so I just used plenty of tape over the crimp.
Here is a picture of the part, you can see the hole in the end where the wire just pulled out.
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