Sfi System Basic Inspection

  1. CHECK BATTERY VOLTAGE

  2. CHECK WHETHER ENGINE CRANKS

  3. CHECK WHETHER ENGINE STARTS

  4. CHECK AIR FILTER

  5. CHECK IDLING SPEED

  6. CHECK FUEL PRESSURE

  7. CHECK FOR SPARK

Sfi System -- Basic Inspection


When a malfunction cannot be confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by performing 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 BATTERY VOLTAGE
    NOTICE:
    Perform this check with the engine stopped and the engine switch off.
    Result
    Result
    		Proceed to
    11 V or higher
    		OK
    Below 11 V
    		NG


NG.
CHARGE OR REPLACE 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

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



      		NG.
      REPLACE AIR FILTER
      OK


      5.CHECK IDLING SPEED


        		NG.
        TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP
        OK


        6.CHECK FUEL PRESSURE


          		NG.
          TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP
          OK


          7.CHECK FOR SPARK


            		NG.
            TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP
            OK

            PROCEED TO PROBLEM SYMPTOMS TABLE