Hello
I asked the head mechanic in my warehouse he said
If you by pass the electric direct to the coil and the compressor working good and cool that mean the compressor and ac system working Ok but if you hook the wire on the plug of compressor and the clutch not engage you have to check the electric system it is not the cause from the speed sensor switch because the speed sensor on the rear of compressor will working only the compressor has too much pressure or too much high speed and it will working when the magnetic inside the swash plate in the compressor turn too much speed and it will make the speed sensor close the circuit and send the signal to the electric system and cut off the electric to the coil
In your case my head mechanic said the compressor Ok and coil Ok and if you check the ohms on the speed sensor is nothing ohms that mean it's Ok ,
You have to check your ac electric in the car system.
Please let me know
Thanks,Tommy


This was their reply to me saying their speed sensor tests bad.

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