Sfi System (For Sedan) Basic Inspection

Engine Hybrid System. Yaris. Ncp93, 131
1Nz-Fe Engine Control. Yaris. Ncp93, 131

  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 (For Sedan) -- Basic Inspection


When a 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:
    Conduct this check with the engine stopped and ignition switch off.
    Result
    		Proceed to
    11 V or more
    		OK
    Below 11 V
    		NG


NG.
CHARGE OR REPLACE BATTERY
OK


2.CHECK WHETHER ENGINE CRANKS


    		NG.
    PROCEED TO PROBLEM SYMPTOMS TABLE (YARIS_NCP93 RM000000PDG0JIX.html)
    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 (YARIS_NCP93 RM00000110A01PX_02_0012.html)
      OK


      5.CHECK IDLING SPEED

      1. Check the engine idling speed (YARIS_NCP93 RM000001DCF01KX_01_0007.html).



      		NG.
      TROUBLESHOOT IDLING SPEED AND PROCEED TO NEXT STEP
      OK


      6.CHECK FUEL PRESSURE

      1. Check the fuel pressure (YARIS_NCP93 RM000001EF100YX_01_0002.html).



      		NG.
      TROUBLESHOOT FUEL PRESSURE AND PROCEED TO NEXT STEP
      OK


      7.CHECK FOR SPARK

      1. Perform a spark test (YARIS_NCP93 RM000001EFG05DX_01_0001.html).



      		NG.
      TROUBLESHOOT SPARK AND PROCEED TO NEXT STEP
      OK

      PROCEED TO PROBLEM SYMPTOMS TABLE (YARIS_NCP93 RM000000PDG0JIX.html)