SFI SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

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HINT:
The intelligent tester should be used in steps 3, 4, 5, 7 and 10.



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:

              Result
              		Proceed to
              Malfunction does not occur
              		A
              Malfunction occur
              		B



            		B.
            GO TO STEP 10
            A


            9.SIMULATE SYMPTOMS

              NEXT


              10.CHECK DTC

                Result:

                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:

                  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:

                  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:

                    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 AND/OR REPAIR

                          NEXT


                          20.CONDUCT CONFIRMATION TEST

                            NEXT

                            END