Operation CHARM: Car repair manuals for everyone.

Coolant Temperature Sensor / Switch HVAC: Description and Operation

A/C Thermo Switch


If the air conditioning compressor's temperature rises above normal conditions, the A/C Thermo switch will open, disengaging the A/C compressor clutch. The A/C Thermo switch will close and power will be reapplied to the clutch when the temperature falls.