Ecd System How To Proceed With Troubleshooting

Engine. Lexus Is250, Is220D. Gse20 Ale20
2Ad-Fhv Engine Control System. Lexus Is250, Is220D. Gse20 Ale20

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. CONNECT INTELLIGENT TESTER TO 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. CHECK DTC

  10. REFER TO DTC CHART

  11. CONDUCT BASIC INSPECTION

  12. REFER TO PROBLEM SYMPTOMS TABLE

  13. CHECK ECM POWER SOURCE CIRCUIT

  14. CONDUCT CIRCUIT INSPECTION

  15. CHECK FOR INTERMITTENT PROBLEMS

  16. CONDUCT PARTS INSPECTION

  17. IDENTIFY PROBLEM

  18. ADJUST AND/OR REPAIR OR REPLACE

  19. CONDUCT CONFIRMATION TEST

Ecd System -- How To Proceed With Troubleshooting


HINT:
  1. Use the following procedures to troubleshoot the ECD system.
  2. The intelligent tester should be used in steps 3, 4, 5, 7, and 9.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

      NEXT


      3.CONNECT INTELLIGENT TESTER TO DLC3
        HINT:
        If the display indicates a communication error with 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 occurs
              		A
              Malfunction does not occur
              		B


            		B.
            SIMULATE SYMPTOMS
            A


            9.CHECK DTC
              Result:
              Result
              		Proceed to
              Trouble code
              		A
              No trouble code
              		B


            		B.
            Go to step 11
            A


            10.REFER TO DTC CHART

              NEXT

              Go to step 14


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


              		B.
              Go to step 16
              A


              12.REFER TO PROBLEM SYMPTOMS TABLE
                HINT:
                1. Engine difficult to start or stalling (Click here).
                2. Black smoke emitted (Click here).
                3. Rough idling or excessive engine vibration (Click here).
                4. Engine knocking or rattling (Click here).
                5. Lack of power or hesitation (Click here).
                Result:
                Result
                		Proceed to
                Malfunctioning circuit confirmed
                		A
                Malfunctioning parts confirmed
                		B


              		B.
              Go to step 16
              A


              13.CHECK ECM POWER SOURCE CIRCUIT

                NEXT


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


                		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