回复：回复：air conditioning problem of my Toyota Camry LE 1993

"If the clutch doesn't run when AC button was pressed, the clutch is dead, then changing the compressor becomes imminent."

I am afraid this statement is not correct. When the pressure is low because of leaking, the compressor will not engage when you press the AC button. That's because the low pressure switch cut the power off. On my car, I can make the compressor engage by bypassing the low pressure cutoff switch using a jump wire.

Also, clutch and compressor are different things. you can change clutch without changing compressor.