Hello again,
While doing some more research for your vehicle, I came across this Technical Service Bulletin (TSB) for your vehicle. I have included it in the diagrams down below as well as a diagram of your vehicle's air conditioning system, showing the lines that are discussed in the TSB. Please go through this guide and get back to us with what you are able to find out.
Thanks,
Alex
2CarPros
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Thursday, May 30th, 2019 AT 10:40 PM