My AC stopped blowing cold air. I’ve already put the right amount of pressure and refrigerant in it. The AC compressor is still good, but there’s no power going through. I think it’s the sensor/ switch, but I can’t seem to find a diagram of the ac pressure switch.

Does anyone know the location of the pressure switch??

 

Welcome- but before you do anything else, pull codes from the onboard diagnostic system to see if your guess is correct. Check the FSM for more details on the HVAC system:

https://www.nicoclub.com/nissan-service-manuals