AIR CONDITIONING SYSTEM(for Manual Air Conditioning System)

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tip:

  • Use these procedures to troubleshoot the air conditioning system.

  • *: Use the intelligent tester.

PROCEDURE

  1. VEHICLE BROUGHT TO WORKSHOP

    Result

    Proceed to

    NEXT
    NEXT

  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

    Result

    Result

    NEXT
    NEXT

  3. INSPECT BATTERY VOLTAGE

    1. Measure the voltage of the battery.

      Standard voltage

      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

    2. w/ PTC Heater:

      Using the intelligent tester, inspect battery voltage reduction history "Battery Voltage Lo Record" in the Data List.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

    1. Use the intelligent tester 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

  5. CHECK FOR DTC*

    1. Check for DTCs and note any codes that are output.

      Click here

    2. Clear the DTCs.

      Click here

    3. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the conditions indicated by the DTC. Then recheck for DTCs.

    Result

    Result

    Proceed to

    DTC is not output

    A

    DTC is output

    B
    B

    Go to DIAGNOSTIC TROUBLE CODE CHART

    Click here

    A

  6. PROBLEM SYMPTOMS TABLE

    1. Refer to the 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

    ADJUST, REPAIR OR REPLACEClick here

    A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Terminals of ECU

      Click here

    2. Data List / Active Test

      Click here

    3. On-vehicle Inspection

    4. Inspection

    Result

    Proceed to

    NEXT
    NEXT

  8. ADJUST, REPAIR OR REPLACE

    Result

    Proceed to

    NEXT
    NEXT

  9. CONFIRMATION TEST

    Result

    Proceed to

    NEXT
    NEXT

    END