Lexus IS250 · Service Manual TRANSMISSION

HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshooting

HINT:
  1. The ECM of this system is connected to the CAN and multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN and multiplex communication systems.
  2. *: Use the intelligent tester.


1.VEHICLE BROUGHT TO WORKSHOP
    NEXT

    2.CUSTOMER PROBLEM ANALYSIS
      NEXT

      3.INSPECT BATTERY VOLTAGE

        Standard voltage:
        11 to 14 V

        If the voltage is below 11 V, recharge or replace the battery before proceeding.
      NEXT

      4.CONNECT INTELLIGENT TESTER TO DLC3*
        NEXT

        5.CHECK AND CLEAR DTCS AND FREEZE FRAME DATA*

        1. Refer to the DTC CHECK/CLEAR (Click here).

        NEXT

        6.VISUAL INSPECTION
          NEXT

          7.SETTING CHECK MODE DIAGNOSIS*

          1. Refer to the CHECK MODE PROCEDURE (Click here).

          NEXT

          8.PROBLEM SYMPTOM CONFIRMATION

          1. Refer to the ROAD TEST (Click here).

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


          		B.
          A

          9.SYMPTOM SIMULATION

          1. Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE (Click here).

          NEXT

          10.DTC CHECK*

          1. Refer to the DTC CHECK / CLEAR (Click here).

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


          		B.
          A

          11.BASIC INSPECTION

          1. Refer to the AUTOMATIC TRANSMISSION FLUID (Click here).

          2. Refer to the PARK/NEUTRAL POSITION SWITCH (Click here).

          3. Refer to the SHIFT LEVER ASSEMBLY (Click here).


          		 NG.
          OK

          12.MECHANICAL SYSTEM TEST

          1. Refer to the MECHANICAL SYSTEM TEST (Click here).


          		 NG.
          OK

          13.HYDRAULIC TEST

          1. Refer to the HYDRAULIC TEST (Click here).


          		 NG.
          OK

          14.MANUAL SHIFTING TEST

          1. Refer to the MANUAL SHIFTING TEST (Click here).


          		 NG.
          OK

          15.PROBLEM SYMPTOMS TABLE CHAPTER 1

          1. Refer to the PROBLEM SYMPTOMS TABLE (Click here).


          		 NG.
          OK

          16.PROBLEM SYMPTOMS TABLE CHAPTER 2

          1. Refer to the PROBLEM SYMPTOMS TABLE (Click here).

          NEXT

          17.PART INSPECTION

            		 NEXT.
            18.DTC CHART

            1. Refer to the DIAGNOSTIC TROUBLE CODE CHART (Click here).

            NEXT

            19.CIRCUIT INSPECTION
              NEXT

              20.IDENTIFICATION OF PROBLEM
                NEXT

                21.REPAIR OR REPLACE
                  NEXT

                  22.CONFIRMATION TEST
                    NEXT

                    ← SYSTEM DESCRIPTIONROAD TEST →