with the compressor running.
the compressor is not running. Check your breakers.
Look to see if the compressor is running when the ac is on. If not, then check the Freon pressure, as the compressor won't run if the Freon is low.
jump a hot wire downt to it with it running with gauges on it and read the readings.
Compressor not running? Check fuses, check switch
If the compressor has stopped running altogether the AC will not work.
Is compressor running? If refrigerant charge is low it will not
Check the ac compressor and clutch to see where the noise is coming from. Also check the compressor drive belt for wear.
When you turn on the AC, check to see if the compressor is running. If the compressor clutch is not engaging, it might be as simple as low refrigerant level. Automobile AC is not like a home AC. Since the compressor cannot be sealed, the seal always leaks a little and you need to occasionally add a little refrigerant.
There can be a couple of reasons due to which the AC compressor of your car might seize to work. First of all check the wires leading to compressor and the fuse switch. Next you have to check if the compressor holds enough gas for AC to work. Also, check for a leakage in steel pipes that circulate the air.
AC Compressor
Low or no freon will cause the AC not to work. Also if the clutch on the AC compressor has failed, or if the compressor itself failed.
The ac compressorThe ac compressor