AIR CONDITIONING SYSTEM

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tip:

  • 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 AUXILIARY BATTERY VOLTAGE

    1. Inspect the auxiliary battery voltage with the power switch off.

      Standard voltage

      11 to 14 V

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

    2. Check the "Operation Limitation Control History Count (Level 1)" and "Operation Limitation Control History Count (Level 2)".

      Click here

      Body Electrical > Air Conditioner > Data List

      Tester Display

      Operation Limitation Control History Count (Level1)

      Operation Limitation Control History Count (Level2)
      Tip:

      If a value other than zero is displayed for "Operation Limitation Control History Count (Level1)" or "Operation Limitation Control History Count (Level2)", PTC heater and seat heater system (w/ Seat Heater System) operation may have been limited in the past. If the operation is still limited, the message "High Power Consumption Partial Limit On AC/Heater Operation." will be displayed on the multi-information display in the combination meter assembly. In this case, inspect the charging system.

      Click here

    3. Clear the "Operation Limitation Control History Count (Level 1)" and "Operation Limitation Control History Count (Level 2)".

      Body Electrical > Air Conditioner > Utility

      Tester Display

      A/C Operation Limitation History Count Clear

    Result

    Proceed to

    NEXT
    NEXT

  3. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

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

    Result

    Result

    Proceed to

    LIN DTC is not output

    A

    LIN DTC is output

    B
    B

    GO TO LIN COMMUNICATION SYSTEM

    Click here

    A

  4. 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

    A

  5. CHECK FOR DTC*

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

      Click here

      Body Electrical > Air Conditioner > Trouble Codes

    2. Clear the DTCs.

      Click here

      Body Electrical > Air Conditioner > Clear DTCs

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

      Click here

      Body Electrical > Air Conditioner > Trouble Codes

    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 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 REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

    A

  7. OVERALL ANALYSIS AND TROUBLESHOOTING*

    1. Panel diagnosis (indicator check, sensor check)

    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