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HYBRID CONTROL SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here


HINT:
  1. *: Use the intelligent tester
  2. Use the following procedure to troubleshoot the hybrid control system.



1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS

      NEXT


      3.CONNECT INTELLIGENT TESTER TO THE DLC3*

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


      NEXT


      4.CHECK DTC AND SAVE FREEZE FRAME DATA* (Click here)

        HINT:
        1. Make sure to save freeze frame data because the data is necessary for a simulation test.
        2. For the hybrid vehicle control system, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs and their corresponding INF codes. By following the diagnosis path based on the combination of output DTCs and INF codes, it is possible to narrow down the problem early and avoid unnecessary diagnosis.


      NEXT


      5.CLEAR DTC AND FREEZE FRAME DATA* (Click here)

        NEXT


        6.CONDUCT VISUAL INSPECTION

          NEXT


          7.CONFIRM PROBLEM SYMPTOMS

            HINT:
            If the engine does not start, perform steps 9 and 11 first.

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



          		B.
          GO TO STEP 10
          A


          8.DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS

            NEXT


            9.CHECK FOR DTCS* (Click here)

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



            		B.
            GO TO STEP 11
            A


            10.REFER TO DTC CHART

              HINT:
              DTCs for the hybrid control system and hybrid battery system are displayed using the same menus on the intelligent tester. It is necessary to check the DTC charts for hybrid control system and hybrid battery system.
              1. Hybrid Control System - DTC chart (Click here)
              2. Hybrid Battery System - DTC chart (Click here)


            NEXT

            GO TO STEP 13


            11.CONDUCT BASIC INSPECTION

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



            		B.
            GO TO STEP 15
            A


            12.CHECK ECU POWER SOURCE CIRCUIT

              NEXT


              13.CONDUCT CIRCUIT INSPECTION

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



              		B.
              GO TO STEP 16
              A


              14.CHECK FOR INTERMITTENT PROBLEMS (Click here)

                NEXT

                GO TO STEP 16


                15.CONDUCT PARTS INSPECTION

                  NEXT


                  16.IDENTIFY PROBLEM

                    NEXT


                    17.ADJUST AND/OR REPAIR

                      NEXT


                      18.CONDUCT CONFIRMATION TEST

                        NEXT

                        END