Ok guys, I've stumped myself and need some help. I have a 2000 F-350 CC DRW, that had lots of issues most of which I've fixed in the last two weeks. I had to replace three door lock actuators (all but the drivers door) as well as the driver's door switch. So all of the door panels were off. Put it all back together and everthing worked fine. Then I pulled the dash, including the instrument panel to clean (too dirty to describe) and replace an indicator bulb. Now, only the dirvers door locks/unlocks, just as before. Both the driver's door and passenger door switches will unlock the driver's door as will my key FOB. None of the other locks are even attempting to lock/unlock which they did before replacing the actuators so I don't think they are getting any power. Is this a relay or switch possibly? I'm really stumped on this because I've backtracked everything I did and I can't make sense of it. And I have read as many posts as I can take and they almost always address actuators which isn't the problem.

 

Probably not much help, but the harness for the door locks runs across the top, under the dash. I accessed my door lock wires for my alarm from under there. In the big taped up harness kind of behind and above the a/c panel. From under the dash look up.
Pink/ light green for unlock, pink/yellow for lock. At least on my 01.
You might have knocked a connector loose.
Good luck.

 

subscribing.

 

Super Duty with remote keyless entry system RKE uses three relays for the lock system, drivers unlock relay, all lock relay and all unlock relay mounted in one box, the manual shows it to be center of instrument panel. The relays are controlled by the gem module as well as by the switches. The relays separate the individual actuators so the locks can be unlocked in two steps with the remote key fob, push the button once drivers door only and twice all locks. I would suspect you have a concern in the relay area. When you said you removed instrument panel, was that the complete panel or just the instrument cluster?

 

Thanks Speicher. I've seen info on the three relays but because they are all seperate functions, it doesn't seem like any one of them could be the culprit since the drivers door still locks and unlocks and the other doors do not either lock or unlock. I only removed the instrument cluster and didn't have to unplug any other stuff besides radio, cigaret lighter, power point so I'm really hoping someone can give me some informed leads. It seems to me it would be a single item like the driver's door switch but I want to be sure before spending the money as it's not cheap and it might not be the problem.

 

As per the wiring diagrams the door switches only serve as a ground to the relays. From what you are telling me the door switches appear to be working properly.

 

Can you post the diagram? How could he get to the relays to swap them around and see if the trouble moves with the relays ? It sounds like relays to me as well or...... 3 bad actuators.

 

Subscibing...

My Excursion, everything will unlock with FOB, switch or keyless entry. but will not lock.

 

Well I tore the dash apart...again and swapped the three relays in succession into each of the three slots and there was absolutely no change at all. So if one is bad, it faked it for me during this test. So when I lock or unlock the doors from either the driver or passenger door switch, only the driver's door works (crew cab). If I use the remote and double lock the FOB, same thing except that all exterior lights flash as they should. Don't understand how I had power locks one day and no power to three of them the next. Going to pull the door sills and see if I may have pinched a wire or something.

 

Well, so much for the idea about swapping the relays. It does seem strange that one day everything is OK then boom 3 doors no workie !

It is not likely that three actuators decided to crap out at the same time. Let us know what you find on pinched wires. Anybody else got any ideas ? Could the GEM be doing this?

 

Funny you mentioned the GEM because that's exactly where I'm focused now. I agree that three new acutators would not crap out all at once. On trucks with keyless entry modules, the GEM does control the door locks and sends the correct signal to the releays. So now I'm trying to figure out how to trouble shoot the GEM either to confirm or rule it out. I did check the wiring and even pulled the driver's door switch which I had installed just trying to double back on everything I had done but no change. And looking in the Alldata DIY site, out of the multiple pin point tests for door locks, none of them mentions the symptom I have which is only driver's door working, all others not working. So if anyone knows how to test this, please let me know otherwise I'll have to take it to the stealer.

 

I'm not much on GEM majic ! Might do a search on GEM and get lucky on a test procedure. I'm usually on the 7.3 board and there are some smart guys there when it comes to the electrical and computer related stuff on our trucks. Post up over there and ask for some GEM help, I bet you'll get it !

I'd try everything before going to the dealer unless you got a good one that you trust.

 

Thanks, I'll do that. Especially since my dome light issue is back and happens to be controlled by the GEM too. I don't want to go to the stealer since the last time I did they told me I needed a new transmission but didn't tell me I was 3 courts low on trans fluid. I had just bought the truck and took it straight to them because I wanted a thorough punch list to work from since I knew the truck had some issues.

 

Hey Everyone:

I was having basically the same issues. Yesterday when C125bob mentioned the GEM, I did some research about that issue.

I found a thread about the Vehicle Security Module (VSM) (I think that is what they called it). I had some clicking under the dash under the radio and the door locks went haywire....

One of our fellow members mentioned the VSM. He said to disconnect the battery, in my case both batteries for time for the computers to clear out.

Disconnected the batteries this morning while putting front brake pads on the EX. When done with the brake job, connected the batteries and tried the locks and everything worked.

Guess I will be replacing the VSM now.....

 

not sure if it will work or not, but you could try to bypass the gem by running your own power wires and ground wires temporarly just to see if the switch works by its self either by a seperate battery or from the drivers door switch, that should tell ya if the door components are working properly, or if there is something else somewhere in the middle (GEM) not working. At least it worked on the older vehicles i worked on. hope this helped some ... and Good luck! hope it all works out for ya.