A/C Pressure Sensor
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
The PCM monitors the refrigerant system high-side pressure through the A/C pressure sensor.
- A valve depressor, located inside the threaded end of the A/C pressure sensor, presses a Schrader valve stem on the compressor discharge line portion of the compressor-to-condenser discharge line.
- The A/C pressure sensor provides a voltage that is proportional to the A/C compressor discharge pressure, which allows for the A/C compressor discharge pressure to be monitored by the PCM.
- The PCM uses this information for A/C clutch control, cooling fan control and idle speed.
- It is not necessary to recover the refrigerant to remove the A/C pressure sensor.