That is an excellent picture, thanks. I saved it.
I checked the continuity between 13 & 12 and what do you know, the resistance value is not within spec. In fact, the test revealed an open circuit
So, at least I have a defective sensor so it'll have to be replaced I'm thinking. Sucks that I have to deplete the system of R134a but oh well.
But, just to be sure, I'll try the control unit next to see what's up. This is a second control unit so I'm hoping it is not failing but it's easy enough to test it out.
Thanks.