Hello,
This sounds like you have a passenger side door control module that is out which can cause the battery to drain down. Here is a wiring diagram so you can see how the system works and a diagram of where the door module is and what it looks like.
You will need to remove the door panel here is a guide to walk you through the steps.
https://www.2carpros.com/articles/door-panel-removal
Check out the diagrams (below).
Please let us know what you find. We are interested to see what it is.
Cheers, Ken
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Thursday, April 5th, 2018 AT 11:39 AM