SFI SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

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When using intelligent tester, troubleshoot in accordance with the procedures shown below.

HINT:
*: Use the intelligent tester.



1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

      NEXT


      3.CONNECT INTELLIGENT TESTER TO DLC3*

        HINT:
        If the display indicates a communication fault with the tester, inspect the DLC3.


      NEXT


      4.CHECK DTC AND FREEZE FRAME DATA*

        HINT:
        Record or print DTCs and freeze frame data if needed.


      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, first perform "check DTC" procedures and "conduct basic inspection" procedures below.

              Result:
              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:
                Result
                		Proceed to
                DTC is output
                		A
                DTC is not output
                		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
                  Click here

                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

                          1. When not using intelligent tester, troubleshoot in accordance with the procedures shown below.


                          1.VEHICLE BROUGHT TO WORKSHOP

                            NEXT


                            2.CUSTOMER PROBLEM ANALYSIS

                              NEXT


                              3.CHECK AND CLEAR DTC

                                NEXT


                                4.CONFIRM PROBLEM SYMPTOMS

                                  Result:
                                  Result
                                  		Proceed to
                                  Malfunction occurs
                                  		A
                                  Malfunction does not occur
                                  		B



                                		B.
                                SIMULATE SYMPTOM
                                A


                                5.CHECK DTC

                                  Result:
                                  Result
                                  		Proceed to
                                  DTC is output
                                  		A
                                  DTC is not output
                                  		B



                                		 B.
                                Go to step 7
                                A


                                6.REFER TO DTC CHART

                                  NEXT

                                  Go to step 9


                                  7.CONDUCT BASIC INSPECTION

                                    Result:
                                    Result
                                    		Proceed to
                                    Malfunctioning parts not confirmed
                                    		A
                                    Malfunctioning parts confirmed
                                    		B



                                  		B.
                                  Go to step 12
                                  A


                                  8.REFER TO PROBLEM SYMPTOMS TABLE

                                    Result:
                                    Result
                                    		Proceed to
                                    Malfunctioning circuit confirmed
                                    		A
                                    Malfunctioning parts confirmed
                                    		B



                                  		B.
                                  Go to step 12
                                  A


                                  9.CHECK ECM POWER SOURCE CIRCUIT
                                    Click here

                                  NEXT


                                  10.CONDUCT CIRCUIT INSPECTION

                                    Result:
                                    Result
                                    		Proceed to
                                    Malfunction not confirmed
                                    		A
                                    Malfunction confirmed
                                    		B



                                  		B.
                                  Go to step 13
                                  A


                                  11.CHECK FOR INTERMITTENT PROBLEMS

                                    NEXT

                                    Go to step 13


                                    12.CONDUCT PARTS INSPECTION

                                      NEXT


                                      13.IDENTIFY PROBLEM

                                        NEXT


                                        14.ADJUST AND/OR REPAIR

                                          NEXT


                                          15.CONDUCT CONFIRMATION TEST

                                            NEXT

                                            END