Sliding door not working properly

It says it is a full function OBD 2 so it should. I would call Autel and ask them if it will communicate with all modules on this vehicle. I suspect it will be it would be nice for them to confirm it.

So, if you have no codes and it is acting crazy like this that usually always means the door motor is the issue.

Without looking at it myself, I have to rely on what we are discussing here and that is basically where I would be looking to replace.

I posted it earlier in the thread, but I will attach it again here to save you from searching for it.

This is the sliding door motor. Basically, it is responsible for moving the door open and closed. It is the common cause of these types of failures. The only times I have seen it not be the issue is when you press the button, and you hear the motor working the entire time like normal, but the door just doesn't move. At that point it is a track issue, but I normally replace the motor at the same time just because you are there.

I understand you would like me to be able to tell you exactly what to replace but unfortunately, I am not looking at it to be able to diagnose it.

So, all I can really do is help you make the best decision with the info that you can gather.

If there are no codes and the door does not operate, then the most likely and common cause is the motor.

However, in this video you can hear the motor run for a short time. So clearly it can work which means you need to monitor the control module and see if the motor is just doing what it is told.

Normally this would mean the control module is the issue but with no codes I find that hard to believe.

All this to say that what I suspect is happening is the motor is beginning to fail and will eventually not operate at all. When it does turn on it is not able to move the door, so you get the result that you are getting.

If it were me, I would replace the motor and retest the operation.

The motor is controlled by the module by different electrical signals. Basically, when the module sends voltage on each different circuit it powers the motor to do what that circuit is meant for.

I am attaching the wiring diagram below if you would like to monitor the voltage signal to the door. What I would suggest is you monitor it on the other door that is operating correctly and if it matches on both doors then the module is fine, and the motor is the issue.

I am also attaching the part number for the sliding door module so you can source a part. The price listed may not be accurate any longer.

Okay. At this point, I don't think we are going to definitively determine what the issue is if we don't have a scan tool. Basically, the module is responsible for controlling the whole system. It releases the latches and turns the motor on. So, we need to use a scan tool to monitor each portion of the system to see what the module is telling these components to do. If the module shows that it is commanding each to operate, then we can check the voltage to confirm it is actually doing it.

Yes, you would use a meter to back probe each of the wires in the diagram above and then operate the door. We need to see if there is voltage coming from each to confirm if this is a module issue.

So, at this point if the latch is not releasing then you can back probe those wires and find out if there is voltage or not. If there is voltage when you press the button, then the latch could be the issue. However, based on the videos that you showed, I still think this is either the module or the motor.

It sounds like you are in a smaller town because I share these same issues with the businesses around me.

If it is dirty, then we may be able to improve the operation by just using two chemicals. Try using an engine degreaser to start. Gum outsells a pretty decent one. This will strip any dirt and grease out of it but we will want to lubricate it again so any spray silicone will work once it is cleaned out a little bit.

If it improves the operation at least this proves that you are right, and we can get more serious about cleaning it.

I would check both the latch and the hold open striker. I attached the info on this below.