Hi,



I have a 2012 G25 Sedan, and all of a sudden the air is blowing hot. I was hoping it was just a freon leak, but it wasn't (I bought the can with the gauge, in which the guy at Autozone said, "if you hook it up and the gauge goes to the red, it's not a freon issue.....I tried to add anyways, and of course nothing changed).


I've read where someone told someone, "check whether or not the compressor clutch is engaging. If not, check the fuse for the A/C clutch relay. If the fuse is blown, check the diode", but that was pertaining to a 2004 G35, that has a monster engine compared to this baby engine.



I'm sure those also could be some things to check, but:


-I don't know how to tell if the compressor clutch is engaging.


-Even in the Manual, and looking in 3 different places, I can not find a fuse for an A/C Clutch Relay (nor a 'diode', but he says check that if the fuse for the A/C Clutch Relay is blown).


Can anyone help me as to what the issues could be, or common ones with G25's, even though G25's aren't common? Also, could someone please tell me how, at a minimum, where the A/C Clutch Relay would be located?


ANY HELP would be very much appreciated!!!


Thank you!!

 

Low side pressure is irrelevant if the compressor isn't turning. It will be reading like 80psi but there is zero flow.

You can hear a compressor engage, makes a loud "click" sound. Useful if you can't really SEE the compressor.

If you can see it then you can watch the electromechanical clutch on the front move and engage.

 

You can also short out the low pressure switch with a paperclip between the two prongs on the harness which will force it to engage.

 

Thank you very much @cleric670@gmail !!