Air Conditioner Control: Description

WARNING: This page is about a different car, the 2007 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 six sensors:

Ambient sensor
In-vehicle sensor
Intake sensor
Optical sensor (providing one input for driver and one input for passenger side)
PBR (position balanced resistor).
Engine coolant temperature sensor (via CAN communication)
Vehicle speed signal (via CAN communication)

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 rear temperature and blower settings selected from rear air control (front) control dials located in the overhead console, or from the rear temperature and blower settings from the rear air control (rear) control dials, when the REAR CTRL switch is pressed (indicator light is on) on the rear air control (front).

The front air control is used to select:

Outlet air volume
Air temperature/distribution