EMISSION CONTROL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING


  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. CHECK AND CLEAR DTC (DIAGNOSIS SYSTEM) Click here


  4. PROBLEM SYMPTOM CONFIRMATION

    Tech Tips

    If the engine does not start, perform step 6 and 8 first.

    A Malfunction does not occur
    B Malfunction occurs

    B

    GO TO STEP 6
    A

  5. SYMPTOM SIMULATION Click here


  6. DTC CHECK Click here

    A No code
    B Malfunction code

    B

    AFTER CHECKING MALFUNCTION CODE, GO TO STEP 9
    A

  7. BASIC INSPECTION Click here

    A Wrong parts not confirmed
    B Wrong parts confirmed

    B

    GO TO STEP 12
    A

  8. PROBLEM SYMPTOM TABLE Click here

    A Wrong circuit confirmed
    B Wrong parts confirmed

    B

    GO TO STEP 12
    A

  9. CHECK ECM POWER SOURCE CIRCUIT Click here


  10. CIRCUIT INSPECTION

    A Malfunction not confirmed
    B Malfunction confirmed

    B

    GO TO STEP 12
    A

  11. CHECK FOR INTERMITTENT PROBLEM Click here


  12. IDENTIFICATION OF PROBLEM

  13. ADJUSTMENT, REPAIR

  14. CONFIRMATION TEST
    END