A/C - Fresh Air/Heater Performance
Classification:HA95-02
Reference:
TECHNICAL BULLETIN NTB95-011
Section:
Heater & Air conditioning
Models:
Date:
January 25, 1995
1993-95 ALTIMA FRESH AIR / HEATER PERFORMANCE
APPLIED VEHICLE
1993-95 Altima (U13)
SERVICE INFORMATION
The Altima ventilation system utilizes a fresh air vent door to provide cooler air from the dash/face vents than the foot vents when the air output is in the Bi-level mode, see figure 1 below.
In extremely cold weather conditions, the air discharged by the dash vents may seem too cold and the customer may think that the heating system is not functioning properly. The reason for the difference between the face and foot vents is to provide a feeling of fresh air to the face while keeping the feet warm.
SERVICE PROCEDURE
If a customer complains of cold air being discharged from the dash vents, please explain and familiarize the customer with the fresh air vent door feature/function. The customer has two options A: In order to maintain the above described benefits, the customer may select a different outlet position during warm-up to avoid the cooler air being discharged from the face vents. B: The temperature difference feature can be disabled. If the customer chooses not to have this feature on his/her vehicle, use the following procedure to disable the fresh air vent door function.
1. Push the foot vent button on the air output control panel. This will close the fresh air vent door and must be done first, otherwise the fresh air vent door will remain in the open position. The fresh air vent actuator motor is located above the passenger side floor vents.
2. Confirm that the fresh air vent door actuator is in the closed (up) position as shown in figure 2.
2. Disconnect the fresh air vent actuator motor connector (located above the passenger side floor vents as shown in Figure 2).
3. Strap the connector as shown in figure 3 to prevent rattles.
CLAIM INFORMATION
This is a customer-pay operation, as the heating/cooling system is operating as designed.