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Home >> Toyota >> 2025 >> Sequoia TRD Pro >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostic Codes & Symptom Tests >> Power Window Control System >> Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch [09/2022 - ] >> Procedure

Driver Side Power Window Auto Up / Down Function does not Operate with Power Window Master Switch [09/2022 - ]: Procedure

  1. READ VALUE USING GTS (MASTER SWITCH) 
    1. Using the GTS, read the data for the condition when the multiplex network master switch assembly was operated.

      Body Electrical > Master Switch > Data List 

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

      Body Electrical > Master Switch > Data List 

      Tester Display
      D Door P/W Auto SW

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  2

  2. READ VALUE USING GTS (D-DOOR MOTOR) 
    1. Using the GTS, read the data for the condition when the multiplex network master switch assembly was operated.

      Body Electrical > D-Door Motor > Data List 

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

      Body Electrical > D-Door Motor > Data List 

      Tester Display
      D Door P/W Auto SW

      OK

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  4

    Result: 

    OK 

    See step  3

  3. PERFORM INITIALIZATION 
    1. Initialize the front power window regulator motor assembly LH.

      Refer to INITIALIZATION [09/2022 - ]

      OK

      Power window system operates normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (PROBLEM DUE TO INITIALIZATION FAILURE) 

    Result: 

    NG 

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [09/2022 - ] 

  4. REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY 
    1. Temporarily replace the multiplex network master switch assembly with a new or normally functioning one.

      Refer to REMOVAL [09/2022 - ]

      OK

      Power window system operates normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    END (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY WAS DEFECTIVE)