Compressor Oil Circulation Control

When the engine starts while the engine coolant temperature is 56°C (133°F) or less, ECM activates the compressor for approximately 6 seconds and circulates the compressor lubricant once.

LOW TEMPERATURE PROTECTION CONTROL

• When intake sensor detects that front evaporator fin temperature is 2°C (36°F) or less, A/C auto amp. requests ECM to turn compressor OFF, and stops the compressor.
• When the front evaporator fin temperature returns to 3.5°C (38°F) or more, the compressor is activated.
  Fig 1: Low Temperature Protection Control Pattern

  Courtesy of NISSAN NORTH AMERICA, INC.