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ECD SYSTEM (for DPF) BASIC INSPECTION

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Tip:

When a malfunction cannot be confirmed by the DTC check, troubleshooting should be performed on all circuits that are possible causes of the problem. However, in most cases, performing the basic engine check shown below can help you find the problem quickly and efficiently. Always perform this check first when troubleshooting the engine.


  1. Click here

    CHECK BATTERY VOLTAGE

    Note:

    Perform the battery voltage check with the engine stopped and ignition switch off.

    Result
    Result Proceed to
    11 V or higher OK
    Below 11 V NG

    • NG
    • CHARGE OR REPLACE BATTERY
    • OK
  2. Click here

    CHECK IF ENGINE WILL CRANK


    • NG
    • PROCEED TO PROBLEM SYMPTOMS TABLE
    • OK
  3. Click here

    CHECK AIR FILTER


    1. Visually check that the air filter is not excessively contaminated with dirt or oil.


      • NG
      • CLEAN OR REPLACE AIR FILTER
      • OK
  4. Click here

    CHECK FUEL QUALITY


    1. Check that only diesel fuel is being used.

    2. Check that the fuel does not contain any impurities.


      • NG
      • REPLACE FUEL
      • OK
  5. Click here

    CHECK FUEL FOR AIR


    • NG
    • BLEED AIR FROM FUEL
    • OK
  6. Click here

    CHECK FUEL PIPES AND HOSES


    1. Check that the fuel pipes and fuel hoses are not blocked, damaged, disconnected or bent.


      • NG
      • REPAIR OR REPLACE FUEL PIPES OR HOSES
      • OK
  7. Click here

    CHECK FUEL FILTER FOR BLOCKAGE


    • NG
    • REPAIR OR REPLACE FUEL FILTER
    • OK
  8. Click here

    CHECK ENGINE OIL


    • NG
    • ADD OR REPLACE ENGINE OIL
    • OK
  9. Click here

    CHECK ENGINE COOLANT


    • NG
    • ADD OR REPLACE ENGINE COOLANT
    • OK
  10. Click here

    CHECK IDLING SPEED AND MAXIMUM SPEED


    • NG
    • REPLACE SUCTION CONTROL VALVE
    • OK
  11. Click here

    CHECK DIAGNOSTIC CIRCUIT


    • NG
    • REPAIR OR REPLACE MALFUNCTIONING CIRCUIT
    • OK
  12. Click here

    CHECK VACUUM PUMP


    • NG
    • REPAIR OR REPLACE VACUUM PUMP
    • OK
    • PROCEED TO PROBLEM SYMPTOMS TABLE