LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> LS 460L AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Rear Power Window RH does not Operate with Rear Power Window Switch RH >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

  1. CHECK LIN COMMUNICATION SYSTEM 
    1. Check for LIN communication system DTCs related to the power window control system.

      OK: 

      LIN communication system DTCs are not output. 

      NG: GO TO LIN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

      OK: Go to Next Step 

  2. CHECK FOR DTC (B2312) 
    1. Check if DTC B2312 is output.

      OK: 

      DTC B2312 is not output. 

      NG:  GO TO DTC B2312 

      OK: Go to Next Step 

  3. READ VALUE USING TECHSTREAM (REAR POWER WINDOW REGULATOR MOTOR RH) 
    1. Use the Data List to check if the power window regulator motor is functioning properly.

      RR-Door Motor: 

      DATA LIST REFERENCE CHART

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Door P/W Up SW Rear power window RH manual UP switch signal/ON or OFF ON: Rear power window RH manual UP switch operated
      OFF: Rear power window switch RH not operated      		 -
      RR Door P/W Down SW Rear power window RH manual DOWN switch signal/ON or OFF ON: Rear power window RH manual DOWN switch operated
      OFF: Rear power window switch RH not operated      		 -

      OK: 

      Techstream display changes normally when rear power window switch RH is operated. 

      NG: Go to step 4 

      OK: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (See  REMOVAL   ) 

  4. CHECK HARNESS AND CONNECTOR (REAR MULTIPLEX NETWORK DOOR ECU RH REAR POWER WINDOW REGULATOR SWITCH RH) 
    1. Disconnect the O2 ECU connector.
    2. Disconnect the O7 switch connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      O2-25 (SGND) - O7-5 (GND) Always Below 1 Ω
      O2-25 (SGND) or O7-5 (GND) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying O2 ECU Connector And O7 Switch Connector Terminals
      G05776630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (REAR MULTIPLEX NETWORK DOOR ECU RH REAR POWER WINDOW REGULATOR MOTOR RH) 
    1. Disconnect the O3 ECU connector.
    2. Disconnect the O8 motor connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      O3-5 (BDRJ) - O8-2 (B) Always Below 1 Ω
      O3-2 (PWE) - O8-1 (E) Always Below 1 Ω
      O3-5 (BDRJ) or O8-2 (B) - Body ground Always 10 kΩ or higher
      O3-2 (PWE) or O8-1 (E) - Body ground Always 10 kΩ or higher
      Fig 2: Identifying O3 ECU Connector And O8 Motor Connector Terminals
      G06197113Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  6. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH RH - REAR POWER WINDOW REGULATOR MOTOR RH) 
    1. Disconnect the O7 switch connector.
    2. Disconnect the O8 motor connector.
    3. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE REFERENCE CHART

      Tester Connection Condition Specified Condition
      O7-2 (UP) - O8-10 (UP1) Always Below 1 Ω
      O7-10 (DOWN) - O8-7 (DWN1) Always Below 1 Ω
      O7-2 (UP) or O8-10 (UP1) - Body ground Always 10 kΩ or higher
      O7-10 (DOWN) or O8-7 (DWN1) - Body ground Always 10 kΩ or higher
      Fig 3: Identifying O7 Switch Connector And O8 Motor Connector Terminals
      G06197114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  7. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH 
    1. Remove the switch.
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      STANDARD RESISTANCE REFERENCE CHART

      Tester Connection Switch Condition Specified Condition
      O7-2 (UP) - O7-5 (GND) Manual UP operation Below 1 Ω
      O7-10 (DOWN) - O7-5 (GND) Manual DOWN operation Below 1 Ω
      Fig 4: Identifying Rear Power Window Regulator Switch Assembly RH And Connector Terminals
      G05853286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH (See  REMOVAL   ) 

      OK: REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (See  REMOVAL   ) 

scientia non olet · About LEMON Manuals