A/C - Low Airflow From Front Air Vents
Classification: HA09-001AReference: NTB09-028A
Date: November 17, 2010
LOW AIRFLOW FROM HVAC FRONT AIR VENTS
The Applied Vehicles have been amended. Please discard previous versions of this bulletin.
APPLIED VEHICLES:
2004-2008 Quest (V42)
2005-2011 Xterra (N50)
2005-2011 Pathfinder (R51)
2005-2011 Frontier (D40)
2004-2008 Titan (A60)
2004-2008 Armada (TA60)
IF YOU CONFIRM
An Applied Vehicle has low airflow coming from the HVAC front air vents due to evaporator freeze-up.
AND
The HVAC unit surface temperature around the evaporator is about 32°F (0°C) causing ice to form on the evaporator.
NOTE:
The incident may be described as:
^ Only occurring after a long drive with the HVAC on continuously and the blower set on low.
AND
^ Under conditions such as high ambient temperature and high humidity.
ACTION
^ Replace the intake sensor with the part listed in Parts Information.
^ Refer to the Service Procedure below.
PARTS INFORMATION
CLAIMS INFORMATION
SERVICE PROCEDURE
^ For Titan and Armada: follow the procedure outlined in this bulletin for intake sensor replacement.
^ For Quest, Xterra, Frontier and Pathfinder: refer to the appropriate section in the Electronic Service Manual (ESM) for intake sensor replacement.
1. Remove six bolts from the glove box.
2. Remove glove box. The intake sensor is located behind the glove box.
3. Disconnect the intake sensor electrical connector.
4. Remove the intake sensor by pulling it up and out from the front heater and cooling unit assy.
5. Install new intake sensor in reverse order of removal and connect the intake sensor electrical connector.
6. Install glove box in reverse order of removal.