Ford Automobiles banner

2007 Expedition Power lock troubleshooting

13K views 20 replies 4 participants last post by  Dominick 1  
#1 ·
Hello,
Having some trouble troubleshooting my power locks. I have a 2007 Ford Expedition.

The passenger door switch will lock and unlock all doors like it should.
The driver door switch will only unlock the doors, but not lock them.
The keypad on the drivers door will unlock the door like it should.
The remote will unlock all doors, but pressing lock will not lock the doors, it will only turn the alarm on. (very annoying if you forget, because the kids will open the door and set the alarm off!)

I took off the driver door panel and the covers for the wiring harness along the driver side doors, but couldn't find anything obvious there (i.e. no broken, burned, or corroded wires). I even pulled the drivers side switch out and looked it over, and could see nothing obviously wrong there either.

Any ideas what could be going on? Thank you!
 
Thanks for the advice so far. I had another question. I have the 2007 Expedition wiring diagram now. For the lock diagram on pg. 110-2, it says in parenthesis under the "door lock relay" that it is "non-servicable". What does that mean?

I can access the smart junction box where the relay is suppose to be, but the only thing accessible within it are the fuses.
Image
Image
 
Discussion starter · #14 ·
Hi, If you look at the center of the fuse box the big square box looking thing in the center is a fuse relay, pull that out replace it see what happens I would say go to a junkyard and get one.
According to the book, that is the "accessory delay relay". I still can't find out what that does. But it does not appear to be the door lock relay. The fuse F17 (in the picture) protects the door lock relay, unlock relay, and liftgate release relay. I just can't find those. Would they be behind the Smart Junction Box, underneath all the fuses? The wiring diagrams show those relays inside the box but the diagram of the box itself doesn't show them.
 
Discussion starter · #19 ·
Ok. So those lock/unlock relays should be part of the door lock module? Any idea where this door lock control module is located in the vehicle? It's not mentioned or shown in the wiring diagram book. And I can't find anything about it anywhere else online. Several sites sell the part (and apparently my model has it), but none say where it's at.