Refrigerant Pressure Sensor
COMPONENT FUNCTION WITHIN SYSTEM
- The refrigerant pressure sensor converts high-pressure side refrigerant pressure into voltage and outputs it to ECM.
- This value is transmitted from the ECM to the A/C amp. via CAN communication and is used in A/C compressor control and cooling fan operation request control.
INDIVIDUAL COMPONENT FUNCTION
The refrigerant pressure sensor converts refrigerant pressure into voltage.
COMPONENT OPERATION
- The refrigerant pressure sensor is a capacitance type sensor. It consists of a pressure detection area and a signal processing area.
- The pressure detection area, which is a variable capacity condenser, changes internal static capacitance according to pressure force.
- The signal processing area detects the static capacitance of the pressure detection area, converts the static capacitance into a voltage value, and transmits the voltage value to ECM.
- The output voltage increases as the refrigerant pressure rises.
COMPONENT PARTS LOCATION
The refrigerant pressure sensor is installed to the high pressure pipe.