SFI SYSTEM BASIC INSPECTION

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When the 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 engine troubleshooting.

1. Click here

   CHECK BATTERY VOLTAGE

   Note:

   Conduct this check with the engine stopped and the engine switch off.

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

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

   CHECK WHETHER ENGINE CRANKS

   
   
   • NG
   • PROCEED TO PROBLEM SYMPTOMS TABLE (See pageClick here)
   • OK
3. Click here

   CHECK WHETHER ENGINE STARTS

   
   
   • NG
   • GO TO STEP 6
   • OK
4. Click here

   CHECK AIR FILTER

   
   

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

      
      
      • NG
      • REPLACE AIR FILTER
      • OK
5. Click here

   CHECK IDLE SPEED

   
   

   1. Check the engine idle speed (Click here).

      
      
      • NG
      • TROUBLESHOOT IDLE SPEED AND PROCEED TO NEXT STEP
      • OK
6. Click here

   CHECK FUEL PRESSURE

   
   

   1. Check the fuel pressure (Click here).

      
      
      • NG
      • TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP
      • OK
7. Click here

   CHECK FOR SPARK

   
   

   1. Perform a spark test (Click here).

      
      
      • NG
      • TROUBLESHOOT IGNITION SYSTEM AND PROCEED TO NEXT STEP
      • OK
      • PROCEED TO PROBLEM SYMPTOMS TABLE (See pageClick here)