Originally Posted by aihler
It's been awhile since I've been on this. I had and still do have a problem with my smart junction box. It all started with one right rear tail light wouldn't work, then the other right tail light went out. Both wires coming back to the lights from the junction box are dead. The right front turn light works fine. Anyway I want and need to get this problem fixed. I called Ford and they said if I replace the box myself they would code it for around $100.00. I just want it fixed because I got a sequential light system for Christmas. What do you think? Does this sound like this should fix the problem?
The dealer tech can actually connect up their VCM (vehicle communication module) and get specific DTC's from the SJB that should identify if the SJB has failed.
Just out of curiosity did you check connector C411 and ground G402? This connector and ground is under the rear plastic trim panel in the back of the trunk to the right of the trunk latch. You say the right rear tail light it dead? Are none of the lights in it working? Turn, flasher or running? How about the right rear side lamp?
Just trying to help you cover all the bases before you got to lay out out for a new SJB.
If it needs replaced the dealer tech needs to upload the data from your old SJB, it holds the anti theft, keyless entry data and communicates with the PCM. Once the new SJB is installed then the data needs to be downloaded to it.
This is only an educated guess but I bet if you install an SJB from a salvage yard the car won't start because of the anit-theft. I might be wrong on that one though.
One other thing. If you have to have yours replaced I would be willing to buy your failed one. PM me if your interested