A/C Pressure Sensor/Switch - Cooling Fan: Description and Operation

A/C Presure Fan Control, High And Low Pressure Switches:

DESCRIPTION:

The A/C Pressure Fan Switch is used on vehicles with A/C. This switch tells the ECM to turn "ON" the cooling fan when A/C head pressure is high. This switch opens when the A/C head pressure exceeds approximately 200 psi.