gabrieljohnson3
Titan door lock failure
Summary of the thread
A 2015 Nissan Titan is experiencing an electrical fault where the doors cannot be locked or unlocked by any method. Diagnostics suggest a defective door contact signal, possibly due to a cable or plug connection issue in the door wiring harness. The problem was confirmed to be a faulty connection in the door wiring harness, and it was resolved by taking the vehicle to a workshop for repair.
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4 comment(s)
gabrieljohnson3 (community.author)
Yes, I visually inspected the wiring harness, but didn't perform any continuity tests. Was your issue intermittent, or did it fail completely like mine? And if you don't mind me asking, how did you finally resolve it?
ottowolf7
In my case it was more of an intermittent gremlin, like a faulty switch that sometimes works and sometimes doesn't. Considering your problem is constant, and you've checked the obvious visual points, it might be worth taking it to a trusted workshop before you chase a rabbit down a hole. These electrical issues can be difficult to trace.
gabrieljohnson3 (community.author)
Appreciate the input. I'll follow your advice and take it to a workshop. The problem was indeed a faulty connection in the door wiring harness, just like initially thought. Repair cost was 95€.
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NISSAN
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TITAN
ottowolf7
Interesting. I've got a Nissan Titan myself, though I can't recall the exact year. I had a somewhat similar problem where the door locks were acting erratically. Did you check the main wiring harness that runs between the door and the body? It's like the car's nervous system, and if a wire frays or a connector gets loose, strange things can happen.