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Home >> Lexus >> 2012 >> IS F >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Diagnostics & Symptom Tests) >> Power Window Control System >> Symptom Tests >> Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch >> Procedure
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Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch: Procedure

  1. READ VALUE USING TECHSTREAM (Master Switch) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Master switch / Data List.
    5. Read the Data List according to the display on the Techstream.
      MASTER SWITCH (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door P/W Auto SW Driver side power window auto up/down switch signal / ON or OFF ON: Driver side power window auto switch operated
      OFF: Driver side power window auto switch not operated
      -

      OK

      On the Techstream screen, ON or OFF is displayed accordingly.

    NG → See step   4 

    OK: Go to next step 

  2. REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Side) 
    1. Replace the power window regulator motor assembly (for driver side). Refer to REMOVAL .

    NEXT: Go to next step 

  3. CHECK POWER WINDOW CONTROL SYSTEM (AUTO UP/DOWN FUNCTION) 
    1. Check that the driver side door power window moves when the auto up/down function of the multiplex network master switch assembly is operated. Refer to OPERATION CHECK .

      OK

      Driver side auto up/down function is normal.

    NG → See step   4 

    OK → END (POWER WINDOW REGULATOR MOTOR ASSEMBLY IS DEFECTIVE) 

  4. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to  REMOVAL