A/C - Normal Compressor Operational Characteristics
Classification: HA06-001Reference: NTB06-033
Date: April 7, 2006
2005 ALTIMA; A/C COMPRESSOR OPERATION
APPLIED VEHICLES:
2005 Altima (L31) - with manual A/C
SERVICE INFORMATION
Vehicle owners may report the A/C does not turn OFF at times.
Even though the A/C switch is OFF:
^ The A/C compressor cycles.
^ There is slight idle speed fluctuation.
^ The outlet air temperature is cool.
The above conditions may be normal.
There have been HVAC system improvements and design changes.
^ These changes affect the way the A/C compressor operates.
^ These improvements help reduce window fogging by dehumidifying the air.
Recirculation Operation
^ When "recirculation" is turned ON, the A/C compressor will turn ON.
^ After "recirculation" has been turned ON and then OFF, the A/C compressor will remain ON, even if the A/C button indicator light is OFF.
Defroster Operation
^ When a defrost mode is selected (either "defrost or "foot/defrost"),
and
^ the outside temperature is more than 36 - 37°F (2 - 3°C),
^ the A/C compressor will remain ON with the Mode Control Knob in any mode position, even if the A/C button indicator light is OFF.
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