Automatic Transmission System How To Proceed With Troubleshooting

Transmission. Lexus Is250, Is220D. Gse20 Ale20
A960E Automatic Transmission. Lexus Is250, Is220D. Gse20 Ale20

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS

  3. INSPECT BATTERY VOLTAGE

  4. CONNECT INTELLIGENT TESTER TO DLC3*

  5. CHECK AND CLEAR DTCS AND FREEZE FRAME DATA*

  6. VISUAL INSPECTION

  7. SETTING CHECK MODE DIAGNOSIS*

  8. PROBLEM SYMPTOM CONFIRMATION

  9. SYMPTOM SIMULATION

  10. DTC CHECK*

  11. BASIC INSPECTION

  12. MECHANICAL SYSTEM TEST

  13. HYDRAULIC TEST

  14. MANUAL SHIFTING TEST

  15. PROBLEM SYMPTOMS TABLE CHAPTER 1

  16. PROBLEM SYMPTOMS TABLE CHAPTER 2

  17. PART INSPECTION

  18. DTC CHART

  19. CIRCUIT INSPECTION

  20. IDENTIFICATION OF PROBLEM

  21. REPAIR OR REPLACE

  22. CONFIRMATION TEST

Automatic Transmission System -- How To Proceed With 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.
          GO TO STEP 10
          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.
          GO TO STEP 18
          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.
          GO TO STEP 21
          OK


          12.MECHANICAL SYSTEM TEST

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



          		NG.
          GO TO STEP 17
          OK


          13.HYDRAULIC TEST

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



          		NG.
          GO TO STEP 17
          OK


          14.MANUAL SHIFTING TEST

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



          		NG.
          GO TO STEP 16
          OK


          15.PROBLEM SYMPTOMS TABLE CHAPTER 1

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



          		NG.
          GO TO STEP 19
          OK


          16.PROBLEM SYMPTOMS TABLE CHAPTER 2

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


          NEXT


          17.PART INSPECTION


            		NEXT.
            GO TO STEP 21

            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

                    END