SFI SYSTEM BASIC INSPECTION

When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all the circuits considered 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 in engine troubleshooting.


  1. CHECK BATTERY VOLTAGE

    Note

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

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

    NG

    CHARGE OR REPLACE BATTERY
    OK

  2. CHECK IF ENGINE CRANKS


    NG

    PROCEED TO PROBLEM SYMPTOMS TABLE
    OK

  3. CHECK IF ENGINE STARTS


    NG

    GO TO STEP 6
    OK

  4. CHECK AIR FILTER


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


      NG

      REPLACE AIR FILTER
      OK

  5. CHECK IDLING SPEED


    1. Check the idling speed Click here.


      NG

      PROCEED TO PROBLEM SYMPTOMS TABLE
      OK

  6. CHECK FUEL PRESSURE


    1. Check the fuel pressure Click here.


      NG

      PROCEED TO TROUBLESHOOT
      OK

  7. CHECK FOR SPARKS


    1. Check for sparks Click here.


      NG

      PROCEED TO TROUBLESHOOT
      OK
      PROCEED TO PROBLEM SYMPTOMS TABLE