2015 tacoma blinking a/c light

m y a/c works for days then the light blinks and it stops. Sometimes if I disconnect the battery for a few mins. it will work again. I think my compressor rpm switch is bad, can I change it without discharging the a/c. I already changed the relay. I separated the ac clutch from the cars electrical system and jumped it it does not engage I think the magnetic clutch must be bad. That may be the whole problem if it doesn't engage the magnet disconnected from the car its NG?

 

This is one of the better DIY diagnostic post I’ve seen on that issue.
https://www.tacomaworld.com/threads/a-c-light-blinking-troubleshooting-guide.440200/

 

I will say IF you apply battery voltage to the AC Clutch and it does not engage then the clutch is defective and needs to be replaced.