Refrigerant Pressure Sensor

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

The refrigerant pressure sensor provides the Automatic Temperature Control Module (ATCM) with a pressure input from the high-pressure side of the refrigerant system. The refrigerant pressure sensor is hardwired to the ATCM, which uses the signal to control operation of the A/C compressor through the A/C compressor clutch relay in the Battery Junction Box (BJB). Additionally, the ATCM is able to increase the amount of re-circulated air, if it is required. The ATCM broadcasts the refrigerant high-pressure value over the medium-speed Controller Area Network (CAN) comfort bus to the Engine Control Module (ECM) via the Body Control Module/Gateway Module Assembly (BCM/GWM)). The ECM calculates the additional load on the engine when the A/C compressor is working. For example, this signal is used as an input, for the idle speed control.

The refrigerant pressure sensor is located in the refrigerant line between the condensor and the Thermostatic Expansion Valve (TXV).