HYBRID BATTERY SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • *: Use the GTS

  • Use the following procedure to troubleshoot the hybrid battery system.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS

    Result
    Proceed to
    NEXT

    NEXT

  3. GTS TO THE DLC3*

    Tech Tips

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

    Result
    Proceed to
    NEXT

    NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*

    Click here

    Tech Tips


    • Make sure to save freeze frame data because the data is necessary for performing simulation tests.

    • For the hybrid control system, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs and their corresponding INF codes. By following the diagnosis path based on the combination of output DTCs and INF codes, it is possible to narrow down the problem early and avoid unnecessary diagnosis.

    Result
    Proceed to
    NEXT

    NEXT

  5. CLEAR DTC AND FREEZE FRAME DATA*

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  6. CONDUCT VISUAL INSPECTION

    Result
    Proceed to
    NEXT

    NEXT

  7. CONFIRM PROBLEM SYMPTOMS

    Tech Tips

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

    Result
    Proceed to
    Malfunction does not occur.
    Malfunction occurs.

    Malfunction occurs.

    GO TO STEP 10 Click here

    Malfunction does not occur.

  8. DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS

    Result
    Proceed to
    NEXT

    NEXT

  9. CHECK FOR DTCS*

    Click here

    Result
    Proceed to
    DTCs are output.
    DTCs are not output.

    DTCs are not output.

    CONDUCT BASIC INSPECTION Click here

    DTCs are output.

  10. REFER TO DTC CHART

    Tech Tips

    DTCs for the hybrid control system and hybrid battery system are displayed using the same menus on the GTS. It is necessary to check the DTC charts for hybrid control system and hybrid battery system.



    Result
    Proceed to
    NEXT

    NEXT

  11. CONDUCT CIRCUIT INSPECTION

    Result
    Proceed to
    Malfunction not confirmed.
    Malfunction confirmed.

    Malfunction confirmed.

    GO TO STEP 13 Click here

    Malfunction not confirmed.

  12. CHECK FOR INTERMITTENT PROBLEMS

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  13. IDENTIFY PROBLEM

    Result
    Proceed to
    NEXT

    NEXT

  14. ADJUST AND/OR REPAIR

    Result
    Proceed to
    NEXT

    NEXT

  15. CONDUCT CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END

  16. CONDUCT BASIC INSPECTION

    Result
    Proceed to
    Malfunctioning parts not confirmed.
    Malfunctioning parts confirmed.

    Malfunctioning parts confirmed.

    CONDUCT PARTS INSPECTION Click here

    Malfunctioning parts not confirmed.

  17. CHECK ECU POWER SOURCE CIRCUIT

    Result
    Proceed to
    NEXT

    NEXT

    GO TO STEP 11 Click here

  18. CONDUCT PARTS INSPECTION

    Result
    Proceed to
    NEXT

    NEXT

    GO TO STEP 13 Click here