Sfi System How To Proceed With Troubleshooting

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

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. CONNECT INTELLIGENT TESTER TO THE DLC3*

  4. CHECK DTC AND FREEZE FRAME DATA*

  5. CLEAR DTC AND FREEZE FRAME DATA*

  6. CONDUCT VISUAL INSPECTION

  7. SET CHECK MODE DIAGNOSIS*

  8. CONFIRM PROBLEM SYMPTOMS

  9. SIMULATE SYMPTOMS

  10. CHECK DTC*

  11. REFER TO DTC CHART

  12. CONDUCT BASIC INSPECTION

  13. REFER TO PROBLEM SYMPTOMS TABLE

  14. CHECK ECM POWER SOURCE CIRCUIT

  15. CONDUCT CIRCUIT INSPECTION

  16. CHECK FOR INTERMITTENT PROBLEMS

  17. CONDUCT PARTS INSPECTION

  18. IDENTIFY PROBLEM

  19. ADJUST, REPAIR OR REPLACE

  20. CONDUCT CONFIRMATION TEST

Sfi System -- How To Proceed With Troubleshooting


HINT:
*: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

      NEXT


      3.CONNECT INTELLIGENT TESTER TO THE DLC3*
        HINT:
        If the display indicates a communication fault in the tester, inspect the DLC3.

      NEXT


      4.CHECK DTC AND FREEZE FRAME DATA*
        HINT:
        Record or print DTCs and freeze frame data, if necessary.

      NEXT


      5.CLEAR DTC AND FREEZE FRAME DATA*

        NEXT


        6.CONDUCT VISUAL INSPECTION

          NEXT


          7.SET CHECK MODE DIAGNOSIS*

            NEXT


            8.CONFIRM PROBLEM SYMPTOMS
              HINT:
              If the engine does not start, perform steps 10 and 12 first.
              Result
              		Proceed to
              Malfunction does not occur
              		A
              Malfunction occurs
              		B


            		B.
            GO TO STEP 10
            A


            9.SIMULATE SYMPTOMS

              NEXT


              10.CHECK DTC*
                Result
                		Proceed to
                Malfunction code
                		A
                No code
                		B


              		B.
              GO TO STEP 12
              A


              11.REFER TO DTC CHART

                NEXT

                GO TO STEP 14


                12.CONDUCT BASIC INSPECTION
                  Result
                  		Proceed to
                  Malfunctioning parts not confirmed
                  		A
                  Malfunctioning parts confirmed
                  		B


                		B.
                GO TO STEP 17
                A


                13.REFER TO PROBLEM SYMPTOMS TABLE
                  Result
                  		Proceed to
                  Malfunctioning circuit confirmed
                  		A
                  Malfunctioning parts confirmed
                  		B


                		B.
                GO TO STEP 17
                A


                14.CHECK ECM POWER SOURCE CIRCUIT

                  NEXT


                  15.CONDUCT CIRCUIT INSPECTION
                    Result
                    		Proceed to
                    Malfunction not confirmed
                    		A
                    Malfunction confirmed
                    		B


                  		B.
                  GO TO STEP 18
                  A


                  16.CHECK FOR INTERMITTENT PROBLEMS

                    NEXT

                    GO TO STEP 18


                    17.CONDUCT PARTS INSPECTION

                      NEXT


                      18.IDENTIFY PROBLEM

                        NEXT


                        19.ADJUST, REPAIR OR REPLACE

                          NEXT


                          20.CONDUCT CONFIRMATION TEST

                            NEXT

                            END