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:
    Voltage Proceed to
    11 V or more OK
    Less than 11 V NG

 

  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