A/C Pressure/Temperature Sensors
WARNING: This page is about a different car, the 2022 Volkswagen ID.4 and 2021 Volkswagen ID.4. However, it is still accessible from the selected car via links, so may be relevant.
Sensor for Connection without Valve on Refrigerant Circuit
- There are different versions of these sensors -1-. Depending on the version, their exterior currently only differs in the part number, possibly in the connector connection coding, or in imprinted designation when the part number is the same. Therefore, pay attention to the correct allocation, part number and designation when replacing. Refer to the Parts Information and Refrigerant Circuit (vehicle-specific Service Information).
- These sensors exchange information with the respective control module via the data bus (for example via the "LIN bus") when voltage is applied. The relevant control module uses this information to calculate the pressure (and temperature) in the refrigerant circuit and any faults detected are reported to the control module. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.
- The respective control module uses this information to calculate the refrigerant circuit pressure and the A/C compressor is activated accordingly.
- The silicone washer -2- protects the threaded connection, and the seal -3- seals off the refrigerant circuit. For additional information about the seals. Refer to SEALS .