I've got a 97 SR5 ext cab and noticed this past weekend that my door locks weren't unlocking after shutting the engine off. After investigating into this a little more in depth, I noticed everytime I press the door lock button they lock for a second then pop right back up. If I hold down the door lock button, they stay down. Also, when I start the truck the locks do not automatically lock (like they used to). I tried using the key in both doors and using the drivers side I can lock both doors, but both pop right back up again.
I haven't had time to tear into anything yet (door panel or relays), because I was helping my gf move this weekend. It seems like to me that the door unlock button is constantly being pushed (even though I'm not physically pushing the button). Usually when I think the door unlock button (even when the doors are unlock) you can hear the actuator move to try and push the locks to the unlock position; but now nothing happens.
I've run all these scenarios through both the passenger and driver's side door lock buttons and get the same results, which would lead me to believe that it would be where both meet in a relay somewhere. I've searched through the forums and haven't found this problem (no grinding sounds or tough movement). If anyone has ideas on where to start searching it would be greatly appreciated.
If it is a relay, where would it be located and how do you check to see if a relay is bad?
Thanks for any help on this!