AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) SYSTEM DESCRIPTION


  1. GENERAL


    1. The air conditioning system has the following features:


      • The air conditioning unit controls the temperature of the area around the left and right seats independently, and sets the temperature for the driver seat and front passenger seat. In addition, it uses the amount of sunlight and the temperature of the left and right seats to adjust the temperature and airflow volume.

      • In accordance with the temperature set using the temperature control switch, the air conditioning amplifier assembly determines the outlet air temperature based on the signals input from various sensors. In addition, corrections are made in accordance with the signals from the engine coolant temperature sensor to control the outlet air temperature.

      • Controls the blower motor in accordance with the airflow volume determined by the air conditioning amplifier assembly based on the signals input from various sensors.

      • Automatically changes the dampers in accordance with the outlet mode ratio that is determined by the air conditioning amplifier assembly based on the signals input from various sensors.

      • The Positive Temperature Coefficient (PTC) heater system contains a PTC heater that heats the air that has passed through the heater core to ensure proper heater performance. The PTC heater is applicable and automatically controllable to 495 W, 330 W and 165 W, because of it is self-regulating characteristics.

      • A combustion type power heater is available as optional equipment to provide comfortable heater performance in cold areas.

      • A compact, lightweight, and highly efficient straight flow (full-path flow) aluminum heater core is used.

      • The micro dust and pollen filter control is used to remove pollen in the air around the upper areas of the driver and front passenger seats.

      • The air conditioning amplifier assembly is equipped with a self diagnosis function. If there is a malfunction in the system, it stores DTCs (Diagnostic Trouble Codes) in its memory.

  2. MODE POSITION AND DAMPER OPERATION

    A003DU3E02
    Function of Main Damper
    Control Damper Operation Position Damper Position Operation
    Air Inlet Control Damper Fresh A Brings in fresh air.
    Recirculation B Recirculates internal air.
    Air Mix Control Damper Max Cool to Max Hot

    C - D

    C' - D'

    		 Varies the mixture of cold air and hot air in order to regulate the temperature continuously from hot to cool.
    Mode Control Damper A003CDC

    Face

    		 F, I Air blows out of the center registers, instrument panel upper portion register, and side registers.
    A003CZG

    Bi-level

    		 F, H Air blows out of the center registers, instrument panel upper portion register, side registers, and front and rear footwell register ducts.
    A003AI0

    Foot

    		 E, G

    Air blows out of the front and rear footwell register ducts and side registers.

    In addition, air blows out slightly from the front defroster.
    A003CAD

    Foot/Def

    		 E, H

    Defrosts the windshield through the front defroster and side registers, while air is also blown out from the front and rear footwell register ducts.

    In addition, air blows out slightly from the front defroster.
    A003BGY

    Def

    		 E, I Defrosts the windshield through the front defroster and side registers.

  3. AIR OUTLETS AND AIRFLOW VOLUME

    A003DWHE01

    INDICATION

    (MODE)

    		 Center Register Side Register Front and Rear Footwell Register Defroster Instrument Panel Upper Portion Register
    A B C D E
    A003CDC

    Face

    		 A003EIG A003EIG - - A003EIG
    A003CZG

    Bi-level

    		 A003ENF A003ENF A003ENF - A003ENF
    A003AI0

    Foot

    		 - A003AQ3 A003C5O A003AQ3 -
    A003CAD

    Foot/Def

    		 - A003AQ3 A003EIG A003EIG -
    A003BGY

    Def

    		 - A003AQ3 - A003C5O -

    Tech Tips


    • The size of the circle indicates the proportion of airflow volume.

    • The same system is used for LHD and RHD vehicles.