Power Door Lock Control System How To Proceed With Troubleshooting

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Door Lock. Lexus Is250, Is220D. Gse20 Ale20

  1. VEHICLE BROUGHT TO WORKSHOP

  2. CUSTOMER PROBLEM ANALYSIS CHECK

  3. INSPECT BATTERY VOLTAGE

  4. INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

  5. CHECK FOR DTC

  6. PROBLEM SYMPTOMS TABLE

  7. OVERALL ANALYSIS AND TROUBLESHOOTING

  8. REPAIR OR REPLACE

  9. CONFIRMATION TEST

Power Door Lock Control System -- How To Proceed With Troubleshooting


HINT:
  1. Use the following procedures to troubleshoot the power door lock control system.
  2. The intelligent tester should be used in steps 4, 5, and 7.


1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.CUSTOMER PROBLEM ANALYSIS CHECK
      HINT:
      1. In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
      2. Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
      1. The following 5 items are important points in the problem analysis:

        What
        		Vehicle model, system name
        When
        		Date, time, occurrence frequency
        Where
        		Road conditions
        Under what conditions?
        		Running conditions, driving conditions, weather conditions
        How did it happen?
        		Problem symptoms

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    3.INSPECT BATTERY VOLTAGE
      Standard Voltage:
      11 to 14 V
      If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

    NEXT


    4.INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

    1. Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally (Click here).

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


    		B.
    Go to MULTIPLEX COMMUNICATION SYSTEM
    A


    5.CHECK FOR DTC

    1. Check for DTCs and note any codes that are output (Click here).

    2. Delete the DTCs.

    3. Recheck for DTCs.

      Result:
      Result
      		Proceed to
      DTC does not reoccur
      		A
      DTC reoccurs
      		B


    		B.
    Go to DIAGNOSTIC TROUBLE CODE CHART
    A


    6.PROBLEM SYMPTOMS TABLE

      Result:

      Result
      		Proceed to
      Fault is not listed in problem symptoms table
      		A
      Fault is listed in problem symptoms table
      		B


    		B.
    After repair, go to step 9
    A


    7.OVERALL ANALYSIS AND TROUBLESHOOTING

    1. Terminals of ECU
      (Click here)

    2. DATA LIST/ACTIVE TEST
      (Click here)


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    8.REPAIR OR REPLACE

      NEXT


      9.CONFIRMATION TEST

        NEXT

        END