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How To Proceed With Troubleshooting [11/2021 - ]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. CONNECT GTS TO THE DLC3* 

    HINT: 

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

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK DTC AND SAVE FREEZE FRAME DATA* 
    1. Check DTC

      Powertrain > Hybrid Control > Trouble Codes 

    2. Check and save freeze frame data

      Refer to FREEZE FRAME DATA [11/2021 - ] 

      HINT: 

      • Make sure to save freeze frame data because the data is necessary for simulation tests.
      • If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.

        Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

      Result

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

    Result: 

    B 

    PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [11/2021 - ]  

    Result: 

    A 

    See step  5

  5. CLEAR DTC AND FREEZE FRAME DATA* 

    Powertrain > Hybrid Control > Trouble Codes 

    HINT: 

    DTCs P1779-49 and P1779-96 indicate that a malfunction of the integrated capacitor are detected and a malfunction signal is being sent to the hybrid vehicle control ECU.

    The malfunction signal is not cleared by the GTS but will be cleared when the internal voltage of the integrated capacitor is completely discharged after the ignition switch is turned off.

    Therefore, when rechecking for DTCs after replacing components, clearing the DTCs, etc., as it is necessary to clear the malfunction judgement signal from the integrated capacitor, check for or clear DTCs after waiting 10 minutes or more after turning the ignition switch off.

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  6

  6. CONDUCT VISUAL INSPECTION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  7

  7. CONFIRM PROBLEM SYMPTOMS 

    Result

    Result Proceed to
    Malfunction does not occur A
    Malfunction occurs B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  8

  8. DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  9

  9. CHECK FOR DTC* 

    Powertrain > Hybrid Control > Trouble Codes 

    Result

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

    Result: 

    B 

    See step  17

    Result: 

    A 

    See step  10

  10. CONDUCT BASIC INSPECTION 

    Result

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

    Result: 

    B 

    See step  18

    Result: 

    A 

    See step  11

  11. CHECK ECU POWER SOURCE CIRCUIT 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  12. CONFIRM CIRCUITS INDICATED BY OUTPUT DTCS 

    Result

    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    Result: 

    B 

    See step  14

    Result: 

    A 

    See step  13

  13. CHECK FOR INTERMITTENT PROBLEMS 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]

    Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [11/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  14

  14. IDENTIFY PROBLEM 

    Result

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    NEXT

    Result: 

    NEXT 

    See step  15

  15. ADJUST AND/OR REPAIR 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  16

  16. CONDUCT CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END 

  17. REFER TO DTC CHART 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2021 - ] 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  18. CONDUCT PARTS INSPECTION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  14

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