2009 Mazda5 Gran Touring AC Help

[tefloncandi]

My air conditioner just stopped working! The cabin fan still operates, the fan in the engine bay comes on, but the compressor will not kick in! I checked all of the fuses and they are OK. Any ideas?

 

[thaxman]

Checked the under hood fuses? The compressor will use way too much electricty to trust with a basic 15 or 20 amp fuse.

 

[tefloncandi]

All of the fuses are intact.

 

[flcruising]

Check the refrigerant pressures. If they are too low, the compressor won't engage. The high and low side equalize when the compressor is off, so they should be 80+ PSI when the system is at rest. If you can get under the vehicle, detach the compressor clutch wire harness. Test the vehicle side with a test light or multimeter (with vehicle running and a/c mode selected). If voltage is present, then check the compressor side by connecting battery power to it's harness wire and see if compressor engages. Report back your results.

EDIT: Just saw your description that the radiator fan turns on when the a/c is selected. Sounds to me like the compressor clutch may be the culprit, but you can still do some investigating. Otherwise your vehicle is still under full warranty.