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.

      B003PZ8E61

  4. INDICATOR CHECK


    1. Turn the engine switch off.

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

    3. B003O7MC01
      *a Example

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

    4. B003JXWC01
      *a Example
      *b Air Conditioning Control Assembly
      *c Integration Control and Panel Assembly

      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. Start the engine.

    2. Perform the indicator check.

      Tech Tips

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

    3. B003MUIC02
      *a Example
      *b Diagnostic Code

      Read the DTC displayed on the indicator panel.

      Note

      Diagnosis of the current problem cannot be completed while in sensor check mode, which is automatically entered after the indicator check. Therefore, be sure to perform an actuator test, and then perform a sensor check again to confirm the results.

      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. B003NLNC02
      *a Example

      If the DTCs are difficult to read because they change automatically, turn the "UP Dr" 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 "UP Dr" switch is turned clockwise.

      Tech Tips

      Press the "OFF" switch to finish panel diagnosis.

  6. SENSOR CHECK (CLEAR DTC)


    1. Start the engine.

    2. B003JLVC01
      *a Example

      During the sensor check, press the "A/C" switch and "Front DEF" switch simultaneously.