Basic inspection

When a malfunction cannot be confirmed by checking DTCs, 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.CHECK BATTERY VOLTAGE
  1. NOTICE:
     
    Check the battery voltage with the engine stopped and the ignition switch off.
    Standard voltage:
    VoltageProceed to
    11 V or moreOK
    Less than 11 VNG

 

 NG.
CHARGE OR REPLACE BATTERY
OK 
 

 

2.CHECK IF ENGINE CRANKS

     

     NG.
    PROCEED TO PROBLEM SYMPTOMS TABLE
    OK 
     

     

    3.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.CHECK FUEL QUALITY
    1. Check that only diesel fuel is present.

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

     

     NG.
    DRAIN AND REFILL FUEL
    OK 
     

     

    5.CHECK FUEL SYSTEM FOR AIR

       

       NG.
      BLEED AIR FROM FUEL SYSTEM
      OK 
       

       

      6.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
      OK 
       

       

      7.CHECK FUEL FILTER FOR BLOCKAGE

         

         NG.
        CLEAN OR REPLACE
        OK 
         

         

        8.CHECK ENGINE OIL

           

           NG.
          ADD OR DRAIN AND REFILL
          OK 
           

           

          9.CHECK ENGINE COOLANT

             

             NG.
            ADD OR DRAIN AND REFILL ENGINE COOLANT
            OK 
             

             

            10.CHECK IDLE SPEED AND MAXIMUM ENGINE SPEED

               

               NG.
              REPLACE SUPPLY PUMP ASSEMBLY
              OK 
               

               

              11.CHECK DIAGNOSTIC CIRCUIT

                 

                 NG.
                REPAIR OR REPLACE
                OK 
                 

                 

                12.CHECK VACUUM PUMP

                   

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