Yes I've read that and it makes sense. So where does the door ajar get it's feeds? From the Actuator's or is there another circuit loop? I'll take a look at the wiring diagrams, thanks again.

 

Is there a black plastic or rubber button/pin on the door Jam above or below the door latch?

If yes, this is the door ajar switch, otherwise it is incorporated inside the door lock actuator, inside the door.

With Mazda's scan tool they can read each door actuator to see if its getting a open or closed signal, plus weather its in a locked or unlocked state.

I have no idea how to check signals without the scan tool.

 

No pins / buttons that I can see, I checked before. When the weather warms up, it's -20C here today lol, I'll remove the each of the 4 remaining door panels individually and disconnect the wire going to the Actuator and see if I can narrow it down from there. Thanks for your help, much appreciated!~