HYBRID BATTERY SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the intelligent tester.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS


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  3. CONNECT INTELLIGENT TESTER TO DLC3*

    Tech Tips

    If the display on the tester indicates a communication fault, inspect the DLC3 circuit.


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  4. CHECK DTC AND SAVE FREEZE FRAME DATA*


    1. Check for DTC Click here.

    2. Check for Freeze frame data Click here.

      Tech Tips


      • for LHD:

        If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first Click here.

      • for RHD:

        If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first Click here.


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  5. CLEAR DTC AND FREEZE FRAME DATA* Click here


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  6. CONDUCT VISUAL INSPECTION


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  7. CONFIRM PROBLEM SYMPTOMS

    Tech Tips

    If the engine does not start, perform steps 9 and 11 first.

    Result
    Result Proceed to
    Malfunction does not occur A
    Malfunction occurs B

    B

    GO TO STEP 10
    A

  8. DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS


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  9. CHECK FOR DTCS* Click here

    Result
    Result Proceed to
    Trouble code A
    No code B

    B

    GO TO STEP 11
    A

  10. REFER TO DTC CHART Click here


    NEXT
    GO TO STEP 13

  11. CONDUCT BASIC INSPECTION

    Result
    Result Proceed to
    Malfunction parts not confirmed A
    Malfunction parts confirmed B

    B

    GO TO STEP 15
    A

  12. CHECK ECU POWER SOURCE CIRCUIT


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  13. CONDUCT CIRCUIT INSPECTION

    Result
    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    B

    GO TO STEP 16
    A

  14. CHECK FOR INTERMITTENT PROBLEMS Click here


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    GO TO STEP 16

  15. CONDUCT PARTS INSPECTION


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  16. IDENTIFY PROBLEM


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  17. ADJUST AND/OR REPAIR


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  18. CONDUCT CONFIRMATION TEST


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    END