Refrigerant Pressure Sensor
Refrigerant Pressure Sensor
The refrigerant pressure sensor provides the ATC module with a pressure input from the high pressure side of the refrigerant system. The refrigerant pressure sensor is hardwired to the ECM, which uses the signal to control operation of the A/C compressor and to calculate the additional load on the engine when the A/C compressor is operating. The ECM also broadcasts the refrigerant high pressure value over the high speed Controller Area Network (CAN) bus to the Central Junction Box (CJB). The CJB relays the signal to the ATC module over the medium speed CAN bus to increase the amount of recirculated air if required.
The refrigerant pressure sensor is located in the refrigerant line between the condenser and the thermostatic expansion valve. See CONTROL COMPONENTS .