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

  1. DESCRIPTION

    1. Air conditioning system data and the Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the GTS to check for malfunctions and perform troubleshooting.

  2. CHECK DLC3

    1. Check the DLC3.

      Click here

  3. LIST OF OPERATION METHODS

    1. By operating each of the air conditioning control switches as shown in the diagram below, it is possible to enter diagnostic check mode.

      E236715E19

  4. INDICATOR CHECK

    1. Turn the ignition switch off.

    2. Turn the ignition switch to ACC and wait at least 5 seconds.

    3. Turn the ignition switch to ON while pressing the air conditioning control assembly AUTO switch and recirculation/fresh switch simultaneously. Hold both switches until the indicator check screen appears.

      E263074C02

      *A

      for LHD

      *B

      for RHD

      *C

      for Dual Type

      *D

      for Single Type

    4. The indicator check is automatically performed when panel diagnosis is activated. Check that the indicators light up and go off 4 times at 1 second intervals continuously.

      E263075C02

      *A

      for LHD

      *B

      for RHD

      *C

      for Dual Type

      *D

      for Single Type

      *a

      Indicator Blinking Pattern

      *b

      ON

      *c

      OFF

      *d

      1 sec.
      Tip:

      • The sensor check automatically starts when the indicator check is completed.

      • Press the OFF switch to cancel check mode.

  5. SENSOR CHECK (DTC CHECK)

    1. Start the engine and warm it up.

    2. Perform the indicator check.

      Tip:

      After the indicator check is completed, the system enters DTC check mode automatically.

    3. Read the DTC displayed on the air conditioning control assembly.

      E263076C02

      *A

      for LHD

      *B

      for RHD

      *C

      for Dual Type

      *D

      for Single Type

      *a

      Diagnostic Trouble Code (DTC)

      -

      -
      Note:

      In sensor check mode, which is automatically entered after indicator check mode, troubleshooting may be partially performed. Be sure to perform the sensor check again.

      Tip:

      Refer to Diagnostic Trouble Code Chart for details of the codes.

      Click here

      • When there are no problems, DTC 00 is output.

      • As an example, the illustration shows that DTC 12 is output.

    4. If the DTCs are difficult to read because they change automatically, turn the driver side TEMP up*1 or TEMP up*2 switch clockwise to display the DTCs one at a time so that they can be read easily. The DTCs change step by step each time the driver side TEMP up*1 or TEMP up*2 switch is turned clockwise.

      • *1: for Dual Type

      • *2: for Single Type

      E263077C02

      *A

      for LHD

      *B

      for RHD

      *C

      for Dual Type

      *D

      for Single Type
      Tip:

      Press the OFF switch to finish panel diagnosis.

    5. Clear DTCs.

      1. During the sensor check, press the front defroster switch and rear defogger switch simultaneously.

        E263078C02

        *A

        for LHD

        *B

        for RHD

        *C

        for Dual Type

        *D

        for Single Type