Auto Temoerature Control System Diagram

narnone

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Jun 21, 2021
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Plains, PA
My 1977 Town and Country’s AC does not work.

It appears the Climate Control works, but when I vacuum the system down, it held vacuum. I filled with 100 psi of nitrogen, that lasted about an hour. So, the system has leak(s)

Before I started, I dissecting the wiring diagram.

I attached the PDFs I mocked up and added a drawing of one of the connectors. I gave the connectors names as it makes it easier to follow and diagnose.

As for the Town and Country. I will not be fixing the HVAC as I am going to put a new 5.7 or 6.4 in her over the winter.
I hope these help someone out.
If you find an issue with my drawing or the naming, please let me know.
 

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