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.

      A000T7TE03

  4. INDICATOR CHECK

    Tech Tips

    The same system is used for LHD and RHD vehicles.


    1. Turn the power switch off.

    2. Turn the power switch on (ACC) and wait at least 5 seconds.

    3. A000SE4

      Turn the power switch on (IG) while pressing the air conditioning control assembly "AUTO" switch and "Recirculation/Fresh" switch simultaneously. Hold both switches until the indicator check screen appears.

    4. A000O5EE01
      Text in Illustration
      *a Indicator Blinking Pattern
      *b On
      *c Off
      *d 1 second

      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.

      Tech Tips


      • 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. Turn the power switch on (Ready).

    2. Perform the indicator check.

      Tech Tips

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

    3. A000P2JE01
      Text in Illustration
      *a Diagnostic Trouble Code (DTC)

      Read the DTC displayed on the accessory meter display.

      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.

      Tech Tips

      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. A000S34

      If the DTCs are difficult to read because they change automatically, push the driver side "TEMP" switch 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" switch is pushed.

      Tech Tips

      Press the "OFF" switch to finish panel diagnosis.

    5. Clear DTCs


      1. A000NVR

        During the sensor check, press the "FRONT DEF" switch and "REAR DEF" switch simultaneously.