AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) Recirculated/Fresh Air Modes do not Switch

DESCRIPTION

If the air inlet mode cannot be changed between recirculation/fresh or exhaust gas odors can be smelled even though recirculation mode is selected, the following factors may be the cause.

Symptom Factor

  • Air inlet mode cannot be changed between recirculation/fresh

  • Exhaust gas odors can be smelled when air inlet mode set to recirculation mode

  • No. 1 blower damper servo sub-assembly malfunction

  • Damper link disconnection

  • Air inlet damper mechanically locked

  • Engine coolant temperature (high)

  • Air conditioner unit assembly malfunction

PROCEDURE


  1. CHECK NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY


    1. Check that the No. 1 blower damper servo sub-assembly is installed correctly.

      OK
      The No. 1 blower damper servo sub-assembly is installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL NO. 1 BLOWER DAMPER SERVO SUB-ASSEMBLY CORRECTLY Click here

    OK

  2. CHECK FOR DTC


    1. Check for DTCs.


      Body Electrical > Air Conditioner > Trouble Codes
      Result
      Result Proceed to
      B1442 is not output A
      B1442 is output B

    B

    GO TO DTC B1442 Click here

    A

  3. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List.

    5. Read the Data List according to the display on the GTS.


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Coolant Temperature Engine coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up

      This is the engine coolant temperature.

      Tech Tips


      • After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).

      • After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.

      • If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.

      • Check if the engine overheats if the value indicated is higher than 135°C (275°F).

      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature
      OK
      After warming up the engine, the temperature value displayed is within the range specified in the normal condition column.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIR CONDITIONER UNIT ASSEMBLY Click here

    NG

    GO TO COOLING SYSTEM for 2AR-FE: Click here
    GO TO COOLING SYSTEM for A25A-FKS: Click here
    GO TO COOLING SYSTEM for 2GR-FKS: Click here