2013 Chrysler 200, ac compressor not working
 

Hi Everyone,
My 2013 chrysler 200's cooler is not working. I checked the connector at the compressor and it looks like there is no power there no matter if the ac is on or off. That makes me believe that perhaps it is a relay issue.
Unfortunately there is no manual for the 4 relays that are next to the fuse box, even not a single name. Anyone knows how to diagnose the issue and check for the continuity ? any wiring diagram?
Thanks