Air Conditioner Control: Description

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

The front air control provides automatic regulation of the vehicle's interior temperature. The system is based on the driver's and passenger's selected "set temperature", regardless of the outside temperature changes. This is done by utilizing a microcomputer, also referred to as the front air control, which receives input signals from the following five sensors:

Ambient sensor
In-vehicle sensor
Intake sensor
Optical sensor (one sensor for driver and passenger side)
PBR (Position Balanced Resistor).

The front air control uses these signals (including the set temperature) to automatically control:

Outlet air volume
Air temperature
Air distribution

The front air control also provides separate regulation of the vehicle's interior temperature for the rear passenger area. The system is based on the temperature and rear blower settings selected from rear control switches located on the front air control, or from the temperature and rear blower settings selected from rear control switches on the rear air control, when the front air control switches are set to the rear position.

The front air control is used to select:

Outlet air volume
Air temperature/distribution