A/C - Operational Characteristics of A/C Compressor
Classification: HA03-002AReference: NTB03-048A
Date: April 7, 2006
A/C COMPRESSOR OPERATION DIFFERENT FROM EARLIER MODELS
This bulletin has been amended. The Applied Models have been updated. No other content has been changed. Please discard all previous versions of this bulletin.
APPLIED VEHICLES:
2003 - 2006 Sentra (B15) - with manual A/C
2003 - 2004 Altima (L31) - with manual A/C
2003 - 2004 Frontier (D22) - with manual A/C
2003 - 2004 Xterra (WD22) - 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.
For the Applied Vehicles in this bulletin:
^ 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 will remain ON with the Mode Control Knob in any mode position, even if the A/C button is OFF.
NOTE:
The A/C indicator light will not be ON, when the system is operating as described above.
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