Sfi System Basic Inspection

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Uz-Fe Engine Control System. Lexus Gs430, Gs300. Uzs190 Grs190

  1. CHECK BATTERY VOLTAGE

  2. CHECK WHETHER ENGINE WILL CRANK

  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 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.CHECK BATTERY VOLTAGE
    NOTICE:
    Perform this check with the engine stopped and engine switch off.
    Result
    		Proceed to
    11 V or more
    		OK
    Below 11 V
    		NG


NG.
CHARGE OR REPLACE BATTERY
OK


2.CHECK WHETHER ENGINE WILL CRANK


    		NG.
    PROCEED TO PROBLEM SYMPTOMS TABLE
    OK


    3.CHECK WHETHER ENGINE STARTS


      		NG.
      GO TO STEP 6
      OK


      4.CHECK AIR FILTER
        Visually check that the air filter is not excessively contaminated with dirt or oil.


      		NG.
      REPLACE AIR FILTER
      OK


      5.CHECK IDLING SPEED


        		NG.
        PROCEED TO PROBLEM SYMPTOMS TABLE
        OK


        6.CHECK FUEL PRESSURE


          		NG.
          PROCEED TO TROUBLESHOOTING
          OK


          7.CHECK FOR SPARK


            		NG.
            PROCEED TO TROUBLESHOOTING
            OK

            PROCEED TO PROBLEM SYMPTOMS TABLE