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 performing engine troubleshooting.


  1. CHECK BATTERY VOLTAGE

    Note

    Conduct 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
    OK
  2. CHECK WHETHER ENGINE WILL CRANK


    NG
    OK
  3. CHECK WHETHER ENGINE STARTS


    NG
    OK
  4. CHECK AIR FILTER


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


      NG
      OK
  5. CHECK IDLING SPEED


    NG
    OK
  6. CHECK FUEL PRESSURE


    NG
    OK
  7. CHECK FOR SPARK


    NG
    OK