How to proceed with troubleshooting

HINT:
 
  1. Use the following procedures to troubleshoot the ECD system.
  2. *: Use the intelligent tester.

 

1.VEHICLE BROUGHT TO WORKSHOP

     

    NEXT 
     

     

    2.CUSTOMER PROBLEM ANALYSIS

       

      NEXT 
       

       

      3.CONNECT INTELLIGENT TESTER TO DLC3*

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

       

      NEXT 
       

       

      4.CHECK DTC AND FREEZE FRAME DATA*

      1. 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

             

            1. HINT:
               
              If the engine does not start, first perform the "REFER TO DTC CHART" procedures and "REFER TO PROBLEM SYMPTOMS TABLE" procedures below.
              Result:
              ResultProceed to
              Malfunction occursA
              Malfunction does not occurB

             

             B.
            SIMULATE SYMPTOMS
            A 
             

             

            9.CHECK DTC*

             

             

            1. Result:
              ResultProceed to
              Trouble codeA
              No trouble codeB

             

             B.
            Go to step 11
            A 
             

             

            10.REFER TO DTC CHART

               

              NEXT 
               
              Go to step 14

               

              11.CONDUCT BASIC INSPECTION

               

               

              1. Result:
                ResultProceed to
                Malfunctioning parts not confirmedA
                Malfunctioning parts confirmedB

               

               B.
              Go to step 16
              A 
               

               

              12.REFER TO PROBLEM SYMPTOMS TABLE

              1. HINT:
                 
                1. Engine difficult to start or stalling.
                2. Black smoke emitted.
                3. Rough idling or excessive engine vibration.
                4. Engine knocking or rattling.
                5. Lack of power or hesitation.
                Result:
                ResultProceed to
                Malfunctioning circuit confirmedA
                Malfunctioning parts confirmedB

               

               B.
              Go to step 16
              A 
               

               

              13.CHECK ECM POWER SOURCE CIRCUIT

                 

                NEXT 
                 

                 

                14.CONDUCT CIRCUIT INSPECTION

                 

                 

                1. Result:
                  ResultProceed to
                  Malfunction not confirmedA
                  Malfunction confirmedB

                 

                 B.
                Go to step 17
                A 
                 

                 

                15.CHECK FOR INTERMITTENT PROBLEMS

                   

                  NEXT 
                   
                  Go to step 17

                   

                  16.CONDUCT PARTS INSPECTION

                     

                    NEXT 
                     

                     

                    17.IDENTIFY PROBLEM

                       

                      NEXT 
                       

                       

                      18.ADJUST AND/OR REPAIR OR REPLACE

                         

                        NEXT 
                         

                         

                        19.CONDUCT CONFIRMATION TEST

                           

                          NEXT 
                           
                          END