ECD SYSTEM(w/ DPF) HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips

*: Use the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS

    Result
    Proceed to
    NEXT

    NEXT

  3. CONNECT INTELLIGENT TESTER TO THE DLC3*

    Tech Tips

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

    When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  4. CHECK DTC AND FREEZE FRAME DATA*


    1. Check for DTCs (Click here ) and freeze frame data Click here.

      Tech Tips

      Record or print DTCs and freeze frame data, if necessary.

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC AND FREEZE FRAME DATA*


    1. Clear DTCs and freeze frame data.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CONDUCT VISUAL INSPECTION

    Result
    Proceed to
    NEXT

    NEXT

  7. CONFIRM PROBLEM SYMPTOMS


    1. Confirm problem symptoms.

      Tech Tips


      • Refer to Problem Symptoms Table.

        Click here

      • If the engine does not start, first perform the "Check for DTC" procedures and "Conduct Basic Inspection" procedures below.

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

    B

    GO TO STEP 9 Click here

    A

  8. SIMULATE SYMPTOMS

    Tech Tips

    Refer to Symptom Simulation.

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  9. CHECK FOR DTC*


    1. Check for DTCs.

      Tech Tips

      Refer to DTC Check / Clear.

      Click here

      Result
      Result Proceed to
      Trouble code A
      No trouble code B

    B

    CONDUCT BASIC INSPECTION Click here

    A

  10. REFER TO DTC CHART


    1. Refer to Diagnostic Trouble Code Chart.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 13 Click here

  11. CONDUCT BASIC INSPECTION


    1. Conduct Basic Inspection.

      Click here

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

    B

    GO TO STEP 16 Click here

    A

  12. REFER TO PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table.

      Click here

      Result
      Result Proceed to
      Malfunctioning circuit confirmed A
      Malfunctioning parts confirmed B

    B

    CONDUCT PARTS INSPECTION Click here

    A

  13. CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit.

      Tech Tips

      Refer to the ECM Power Source Circuit.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  14. CONDUCT CIRCUIT INSPECTION

    Result
    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

    B

    GO TO STEP 17 Click here

    A

  15. CHECK FOR INTERMITTENT PROBLEMS


    1. Check for intermittent problems.

      Tech Tips

      Refer to Check for Intermittent Problems.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 17 Click here

  16. CONDUCT PARTS INSPECTION

    Result
    Proceed to
    NEXT

    NEXT

  17. IDENTIFY PROBLEM

    Result
    Proceed to
    NEXT

    NEXT

  18. ADJUST AND/OR REPAIR

    Result
    Proceed to
    NEXT

    NEXT

  19. CONDUCT CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END