Refrigerant Pressure Protection
WARNING: This page is about a different car, the 2017 Nissan Versa Note. 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 on the condenser. The refrigerant pressure sensor detects the pressure inside the refrigerant line and sends a voltage signal to the ECM. If the system pressure rises above or falls below the following values, the ECM requests the IPDM E/R to de-energize the A/C relay and disengage the compressor.
- 3.12 MPa (31.82 kg/cm2 , 452.4 psi) or more (When the engine speed is less than 1, 500 RPM)
- 2.74 MPa (27.95 kg/cm2 , 397.3 psi) or more (When the engine speed is 1, 500 RPM or more)
- 0.14 MPa (1.43 kg/cm2 , 20.3 psi) or less