Refrigerant pressure sensor
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
The refrigerant system is protected against excessively high or low pressures by the refrigerant pressure sensor, located on the liquid tank. If the system pressure rises above or falls below the specifications, the refrigerant pressure sensor detects the pressure inside the refrigerant line and sends the voltage signal to the ECM. The ECM then ceases to supply power to the A/C relay which disengages and stops the compressor when the high-pressure side detected by refrigerant pressure sensor meet the following conditions.
- 3, 120 KPa (31.82 kg/cm 2 , 452.4 psi) or more (When the engine speed is less than 1, 500 RPM).
- 2, 740 KPa (27.95 kg/cm 2 , 397.3 psi) or more (When the engine speed is 1, 500 RPM or more).
- 140 KPa (1.43 kg/cm 2 , 20.3 psi) or less.