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SFI SYSTEM BASIC INSPECTION

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When a malfunction is not 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 carrying out the basic engine check shown in the following procedure, the location of the problem can be found quickly and efficiently. Therefore, using this check is essential when engine troubleshooting.


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  1. 1.CHECK AUXILIARY BATTERY VOLTAGE

    Note:

    Carry out this check with the engine stopped and the power switch off.

    Result
    Result Proceed to
    11 V or higher GO TO STEP 2
    Below 11 V CHARGE OR REPLACE AUXILIARY BATTERY

  2. 2.CHECK WHETHER ENGINE CRANKS

    Result
    Result Proceed to
    OK GO TO STEP 3
    NG

    PROCEED TO PROBLEM SYMPTOMS TABLE (Click here)

  3. 3.CHECK WHETHER ENGINE STARTS

    Result
    Result Proceed to
    OK GO TO STEP 4
    NG GO TO STEP 6

  4. 4.CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY


    1. Visually check that the air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.

      Result
      Result Proceed to
      OK GO TO STEP 5
      NG REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY

  5. 5.CHECK IDLE SPEED


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

      Result
      Result Proceed to
      OK GO TO STEP 6
      NG TROUBLESHOOT IDLE SPEED AND PROCEED TO NEXT STEP

  6. 6.CHECK FUEL PRESSURE


    1. Check the fuel pressure (Click here).

      Result
      Result Proceed to
      OK GO TO STEP 7
      NG TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP

  7. 7.CHECK FOR SPARK


    1. Perform a spark test (Click here).

      Result
      Result Proceed to
      OK

      PROCEED TO PROBLEM SYMPTOMS TABLE (Click here)
      NG TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP