You can not  rub the bottle and get a Chinese Genie to answer your questions because she don't have a Crystal Ball to tell her what make , model, and year vehicle you are having problem viewing the AC information. Besides what platform you have and software level of the make of car you have on tool.

 In many makes of cars in Engine controller you can view some live data that pertains to AC clutch command , AC pressure sensor, and low or high speed fan command