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Basic inspection

When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location of the problem can be found quickly and efficiently. Therefore, using this check is essential when troubleshooting the engine.

1.CHECK AUXILIARY BATTERY VOLTAGE

 

 

Result 
Result Proceed to
11 V or higher OK
Below 11 V NG
  1. NOTICE:
     
    Carry out this check with the engine stopped and the power switch off.

 

  NG.
CHARGE OR REPLACE AUXILIARY BATTERY
OK  
 
2.CHECK WHETHER ENGINE CRANKS

 

  NG.
PROCEED TO PROBLEM SYMPTOMS TABLE 
OK  
 
3.CHECK WHETHER ENGINE STARTS

 

  NG.
GO TO STEP 6
OK  
 
4.CHECK AIR FILTER ELEMENT SUB-ASSEMBLY
  1. Visually check that the air filter element sub-assembly is not excessively contaminated with dirt or oil.

 

  NG.
REPLACE AIR FILTER
OK  
 
5.CHECK IDLING SPEED
  1. Check the engine idling speed.

 

  NG.
TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP
OK  
 
6.CHECK FUEL PRESSURE
  1. Check the fuel pressure.

 

  NG.
TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP
OK  
 
7.CHECK FOR SPARK
  1. Perform a spark test.

 

  NG.
TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP
OK  
 
PROCEED TO PROBLEM SYMPTOMS TABLE