AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use the following procedure to troubleshoot the air conditioning system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE


    1. Inspect the battery voltage.

      Standard Voltage
      10 to 16 V

      If the voltage is below 10 V, recharge or replace the battery before proceeding to the next step.

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Use the GTS to check if the CAN communication system is functioning normally.

      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  4. CHECK FOR DTC*


    1. Check for DTCs and note any code that is output.

    2. Clear the DTCs.

    3. Recheck for DTCs. Based on the DTCs output above, try to force the A/C system to output DTCs by simulating the conditions indicated by the DTC.

      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    B

    PROBLEM SYMPTOMS TABLE Click here

    A

  5. DIAGNOSTIC TROUBLE CODE CHART


    1. Find the output DTCs in the diagnostic trouble code chart.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 8 Click here

  6. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Fault is not listed in Problem Symptoms Table A
      Fault is listed in Problem Symptoms Table B

    B

    GO TO STEP 8 Click here

    A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Panel diagnosis (indicator check, sensor check).

      Click here

    2. Data List / Active Test.

      Click here

    3. Terminals of ECU.

      Click here

    4. On-vehicle Inspection.

    5. Inspection.

      Result
      Proceed to
      NEXT

    NEXT

  8. ADJUST, REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

    END