my lincoln mark lt(fully loaded with nav and electronic climate controls) has a problem where when i start the a/c and about 1 minute into it it completely shuts off and am not able to get air out. doesnt matter what setting it is it does the same thing. i hooked it up to my snap on and it found no codes. any help would be great thanks

 

Have you tried this diagnostic test? Page two near the end...

https://www.ford-trucks.com/forums/986532-2008-eatc-self-test.html