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How To Proceed With Troubleshooting [06/2018 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 
    1. Confirm problem symptoms.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

      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.

      OK

      CAN communication system is functioning normally.

      HINT: 

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    OK 

    See step  4

  4. PASSENGER AIRBAG ON/OFF INDICATOR CHECK 
    1. Refer to Diagnosis System.

      Refer to DIAGNOSIS SYSTEM [06/2018 - 08/2021] , or refer to DIAGNOSIS SYSTEM [08/2021 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. DTC CHECK (Present and History DTCs)* 
    1. Refer to DTC Check / Clear.

      Refer to DTC CHECK / CLEAR [06/2018 - ] 

      OK

      DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - ]  

    Result: 

    NG 

    See step  6

  6. DIAGNOSTIC TROUBLE CODE CHART 
    1. Refer to Diagnostic Trouble Code Chart.

      Refer to DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 08/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. CIRCUIT INSPECTION* 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. REPAIR 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  9

  9. CLEAR DTCS (Present and History DTCs)* 
    1. Refer to DTC Check / Clear.

      Refer to DTC CHECK / CLEAR [06/2018 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. DTC CHECK* 
    1. Refer to DTC Check / Clear.

      Refer to DTC CHECK / CLEAR [06/2018 - ] 

      OK

      DTCs are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  11

  11. SYMPTOM SIMULATION 
    1. Check the passenger airbag ON/OFF indicator condition.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END