Control By A/C Auto Amp.

LOW TEMPERATURE PROTECTION CONTROL

When intake sensor detects that front evaporator fin temperature is 2.5°C (37°F) or less, A/C auto amp. requests ECM to turn the compressor OFF, and stops the compressor.

Courtesy of NISSAN NORTH AMERICA, INC.

When the front evaporator fin temperature returns to 4.0°C (39°F) or more, the compressor is activated.

COMPRESSOR PROTECTION CONTROL AT PRESSURE MALFUNCTION

When the high - pressure side value that is detected by refrigerant pressure sensor is as per the following state, ECM requests IPDM E/R to turn A/C relay OFF and stops the compressor.

• 3.12 MPa (31.8 kg/cm² , 452 psi) or more (When the engine speed is less than 1, 500 RPM)
• 2.74 MPa (27.9 kg/cm² , 397 psi) or more (When the engine speed is 1, 500 RPM or more)
• 0.14 MPa (1.4 kg/cm² , 20 psi) or less