General

Description

General
Where fitted, the air conditioning system supplies cooled and dehumidified, fresh or recirculated air to the interior of the vehicle. Air is cooled by drawing it through the matrix of an evaporator. The air is then ducted into the heater assembly, from where it is distributed to the vehicle interior through the heating and ventilation system air ducts.

In the heater assembly, the temperature of the air distributed to the vehicle interior can be adjusted by passing a proportion, or all, of the cooled air through the heater matrix.

The volume of air being distributed is controlled by the variable speed blower in the heater assembly.

The air conditioning system uses a pressure sensor and evaporator temperature sensor to provide operating condition feedback to the engine management system to enable the ECM to predict engine load and run the cooling fans in response to changing atmospheric conditions and driver demand.