LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2024 >> LS 500 Base, RWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostic Codes & Symptom Tests >> Power Window Control System >> Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch [10/2023 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch [10/2023 - ]: Procedure

  1. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Communication P-Door Motor Connection status between front power window regulator motor assembly RH and main body ECU (multiplex network body ECU) STOP or OK STOP: Communication stopped
      OK: Normal communication
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      Communication P-Door Motor

      OK

      OK is displayed for each Data List item above.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO LIN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    OK 

    See step  2

  2. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Main Body > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      P Door Power Window UP Switch Front passenger door power window manual up switch OFF or ON OFF: Manual up switch not being operated
      ON: Manual up switch being operated
      -
      P Door Power Window DOWN Switch Front passenger door power window manual down switch OFF or ON OFF: Manual down switch not being operated
      ON: Manual down switch being operated
      -

      Body Electrical > Main Body > Data List 

      Tester Display
      P Window Auto Up Function
      P Window Auto Down Function

      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 ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Main Body > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      P Door Power Window UP Front passenger door power window up activate OFF/ON -
      P Door Power Window DOWN Front passenger door power window down activate OFF/ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      P Door Power Window UP

      Body Electrical > Main Body > Active Test 

      Tester Display
      P Door Power Window DOWN

      HINT: 

      Up and down movement does not occur if the arrow is not pressed and held.

      OK

      Front passenger door power window operates normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [10/2023 - ] 

    Result: 

    NG 

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to  REMOVAL [10/2023 - ] 

  4. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY 

    Refer to INSPECTION [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY. Refer to  REMOVAL [12/2017 - ] 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY) 
    1. Disconnect the I1 power window regulator switch assembly connector.
    2. Disconnect the H2 front power window regulator motor assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I1-2 (UP) - H2-10 (UP) Always Below 1 Ω
      I1-2 (UP) or H2-10 (UP) - Body ground Always 10 kΩ or higher
      I1-10 (DOWN) - H2-7 (DOWN) Always Below 1 Ω
      I1-10 (DOWN) or H2-7 (DOWN) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. INSPECT FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH 

    Refer to INSPECTION [12/2017 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [10/2023 - ] 

    Result: 

    NG 

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to  REMOVAL [10/2023 - ]