A/C Cycling Switch
A/C CYCLING SWITCHThe A/C cycling switch is used to prevent icing of the evaporator core by cycling OFF the A/C compressor clutch when the suction pressure in the low-pressure side of the refrigerant system drops below acceptable levels. When the A/C cycling switch circuit is open, the PCM will disengage the A/C compressor clutch.
The A/C cycling switch is installed on a Schrader-type valve core fitting on the suction accumulator. It is not necessary to recover the refrigerant before removing the A/C cycling switch.