ECD SYSTEM(for DPF)

DTC Code DTC Name
BASIC INSPECTION

CAUTION / NOTICE / HINT

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.

PROCEDURE

  1. 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. CHECK IF ENGINE WILL CRANK

    Result

    Proceed to

    OK

    NG
    NG

    PROCEED TO PROBLEM SYMPTOMS TABLE

    OK

  3. CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

    1. Visually check that the air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.

    Result

    Proceed to

    OK

    NG
    NG

    CLEAN OR REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

    OK

  4. CHECK FUEL QUALITY

    1. Check that only diesel fuel is being used.

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

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FUEL

    OK

  5. CHECK FUEL FOR AIR

    Result

    Proceed to

    OK

    NG
    NG

    BLEED AIR FROM FUEL

    OK

  6. CHECK FUEL PIPES AND HOSES

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

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE FUEL PIPES OR HOSES

    OK

  7. CHECK FUEL FILTER FOR BLOCKAGE

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE FUEL FILTER

    OK

  8. CHECK ENGINE OIL

    Result

    Proceed to

    OK

    NG
    NG

    ADD OR REPLACE ENGINE OIL

    OK

  9. CHECK ENGINE COOLANT

    Result

    Proceed to

    OK

    NG
    NG

    ADD OR REPLACE ENGINE COOLANT

    OK

  10. CHECK IDLING SPEED AND MAXIMUM SPEED

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE SUCTION CONTROL VALVE

    OK

  11. CHECK DIAGNOSTIC CIRCUIT

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE MALFUNCTIONING CIRCUIT

    OK

  12. CHECK VACUUM PUMP ASSEMBLY

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO PROBLEM SYMPTOMS TABLE

    NG

    REPAIR OR REPLACE VACUUM PUMP ASSEMBLY