LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2024 >> TX 350 Base, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostic Codes & Symptom Tests >> Power Window Control System >> Rear Power Window LH does not Operate with Rear Power Window Switch LH [09/2023 - ] >> Procedure
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Rear Power Window LH does not Operate with Rear Power Window Switch LH [09/2023 - ]: 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 RL-Door Motor Connection status between power window regulator motor assembly LH (for rear LH door) 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 RL-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 [09/2023 - 12/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2023 - ] 

    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
      RL Door Power Window UP Switch Rear LH door power window manual up switch OFF or ON OFF: Manual up switch not being operated
      ON: Manual up switch being operated
      -
      RL Door Power Window DOWN Switch Rear LH 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
      RL Door Power Window UP Switch
      RL Door Power Window DOWN Switch

      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
      RL Door Power Window UP Rear LH door power window up activate OFF/ON -
      RL Door Power Window DOWN Rear LH door power window down activate OFF/ON -

      Body Electrical > Main Body > Active Test 

      Tester Display
      RL Door Power Window UP

      Body Electrical > Main Body > Active Test 

      Tester Display
      RL Door Power Window DOWN

      HINT: 

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

      OK

      Rear LH door power window operates normally.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [09/2023 - ] 

    Result: 

    NG 

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Rear LH Door). Refer to  REMOVAL [09/2023 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

  4. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (for LH Door) 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (for LH Door). Refer to  REMOVAL [09/2023 - ] 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH (for LH Door) - POWER WINDOW REGULATOR MOTOR (for Rear LH Door)) 
    1. Disconnect the H5 power window regulator motor assembly LH (for rear LH door) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H3-5 (UP) - H5-10 (UP) Always Below 1 Ω
      H3-4 (DOWN) - H5-7 (DOWN) Always Below 1 Ω
      H3-5 (UP) or H5-10 (UP) - Body ground Always 10 kΩ or higher
      H3-4 (DOWN) or H5-7 (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 POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Rear LH door) 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [09/2023 - ] 

    Result: 

    NG 

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Rear LH Door). Refer to  REMOVAL [09/2023 - 12/2023]  , or refer to  REMOVAL [12/2023 - ]