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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 101 (Battery / Charging System (A25A-FXS) - Diagnostics - Introduction) >> Charging System >> How To Proceed With Troubleshooting [11/2023 - ] >> Procedure

How To Proceed With Troubleshooting [11/2023 - ]: Procedure

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  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CONFIRM PROBLEM SYMPTOMS 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. CUSTOMER PROBLEM ANALYSIS 
    1. Check if the vehicle has been jump started due to a discharged auxiliary battery.

      Result

      Result Proceed to
      The vehicle has never been jump started. A
      The vehicle has been jump started due to a discharged auxiliary battery. B

    Result: 

    GO TO ON-VEHICLE INSPECTION / CHECK AUXILIARY BATTERY VOLTAGE. Refer to  ON-VEHICLE INSPECTION [11/2023 - ] 

    Result: 

    See step  4

  4. CAN COMMUNICATION SYSTEM CHECK 
    1. Using the GTS, display the CAN Bus Check screen and check that all ECUs and sensors that are connected to the CAN communication system are displayed on the screen.

      Refer to DIAGNOSIS SYSTEM [11/2023 - ]

      CAN Bus Check 

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ] 

    Result: 

    OK 

    See step  5

  5. CHECK FOR DTCS 

    Result

    Result Proceed to
    DTCs are not output A
    DTCs are output B

    Result: 

    GO TO  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ]  

    Result: 

    See step  6

  6. ON-VEHICLE INSPECTION 

    Result

    Result Proceed to
    Malfunctioning area has not been determined. A
    Malfunctioning area has been determined. B

    Result: 

    See step  8

    Result: 

    See step  7

  7. CHECK FOR INTERMITTENT PROBLEMS 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END