Interesting and very useful class of how to check this system, as always very good professional and technical, greetings

Very well done. Thanks for sharing it.

Nicely explained... What I do not understand is about using 2 motors... Okay, do you mean that we have 1 door lock which engages with the car body( common with all cars) & additional safety lock ( is it the 2nd motor ) like the pin type on the window... ? Thanks

Great video! Let's say the wire is cut. How would you verify this by testing continuity from the FEM pin to the door lock actuator? For example, I've tried testing continuity for the passenger side comfort access exterior aerial antenna on pin 10 & 28 of A173*9B but get no signal. I tried every single pin on FEM and was unable to get a connection to the antenna which is definitely working. Does the battery need to be connected to perform a continuity test?

I have the exact same problem..same car luxury model, all other locks open except passenger front door. Wont open from inside or out. I am stuck with a door locked shut. What was the actual problem. Door Actuator?

I always just pull door boot off and look for broken wires First 90% of the time I find fault. 😁

Fine for applying the conditions The car does not work fast learn transmission Why GM Terrain 2017 2.4L