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How To Proceed With Troubleshooting [07/2020 - ]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. INSPECT BATTERY VOLTAGE 
    1. Measure the battery voltage with the engine switch off.

      Standard voltage

      11 to 14 V (Engine switch off)

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK CAN COMMUNICATION SYSTEM* 
    1. Using the Techstream, check if the CAN communication system is functioning normally.

      HINT: 

      Refer to CAN Bus Check in CAN Communication System.

      Refer to DIAGNOSIS SYSTEM [07/2020 - 11/2021] , or refer to DIAGNOSIS SYSTEM [11/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 05/2023] , or refer to DIAGNOSIS SYSTEM [05/2023 - ]

      OK

      CAN communication system is functioning normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - 05/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2023 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK FOR DTCs (HEATED STEERING WHEEL SYSTEM)* 

    HINT: 

    Refer to DTC Check / Clear.

    Refer to DTC CHECK / CLEAR [07/2020 - ] 

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

      Body Electrical > Air Conditioner > Trouble Codes 

    2. Clear the DTCs.

      Body Electrical > Air Conditioner > Clear DTCs 

    3. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.

      Body Electrical > Air Conditioner > Trouble Codes 

      Result

      Result Proceed to
      Malfunction is duplicated but DTCs are not output A
      Malfunction cannot be duplicated and DTCs are not output B
      DTCs are output C

    Result: 

    GO TO SYMPTOM SIMULATION. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

    Result: 

    GO TO  DIAGNOSTIC TROUBLE CODE CHART [07/2020 - ]  

    Result: 

    See step  5

  5. PROBLEM SYMPTOMS TABLE 

    HINT: 

    Refer to Problem Symptoms Table.

    Refer to PROBLEM SYMPTOMS TABLE [07/2020 - 05/2023] , or refer to PROBLEM SYMPTOMS TABLE [05/2023 - ] 

    Result

    Result Proceed to
    Fault is not listed in problem symptoms table. A
    Fault is listed in problem symptoms table. B

    Result: 

    See step  7

    Result: 

    See step  6

  6. OVERALL ANALYSIS AND TROUBLESHOOTING 
    1. Terminals of ECU

      Refer to TERMINALS OF ECU [07/2020 - ] 

    2. Data List / Active Test

      Refer to DATA LIST / ACTIVE TEST [07/2020 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END