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Home >> Lexus >> 2009 >> LS 460 AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Rear Power Window LH does not Operate with Rear Power Window Switch LH >> Inspection Procedure
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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 SWITCH LH) 
    1. Use the Data List to check if the power window regulator motor is functioning properly.

      RL-Door Motor: 

      DATA LIST REFERENCE CHART

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

      OK: 

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

      NG: Go to step 4 

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

  4. CHECK HARNESS AND CONNECTOR (REAR MULTIPLEX NETWORK DOOR ECU LH REAR POWER WINDOW REGULATOR SWITCH LH) 
    1. Disconnect the O15 ECU connector.
    2. Disconnect the O18 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
      O15-25 (SGND) - O18-5 (GND) Always Below 1 Ω
      O15-25 (SGND) or O18-5 (GND) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying O15 ECU Connector And O18 Switch Connector Terminals
      G05853283Courtesy 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 LH REAR POWER WINDOW REGULATOR MOTOR LH) 
    1. Disconnect the O14 ECU connector.
    2. Disconnect the O19 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
      O14-5 (BDRJ) - O19-2 (B) Always Below 1 Ω
      O14-2 (PWE) - O19-1 (E) Always Below 1 Ω
      O14-5 (BDRJ) or O19-2 (B) - Body ground Always 10 kΩ or higher
      O14-2 (PWE) or O19-1 (E) - Body ground Always 10 kΩ or higher
      Fig 2: Identifying O14 ECU Connector And O19 Motor Connector Terminals
      G05853284Courtesy 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 LH - REAR POWER WINDOW REGULATOR MOTOR LH) 
    1. Disconnect the O18 switch connector.
    2. Disconnect the O19 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
      O18-2 (UP) - O19-10 (UP1) Always Below 1 Ω
      O18-10 (DOWN) - O19-7 (DWN1) Always Below 1 Ω
      O18-2 (UP) or O19-10 (UP1) - Body ground Always 10 kΩ or higher
      O18-10 (DOWN) or O19-7 (DWN1) - Body ground Always 10 kΩ or higher
      Fig 3: Identifying O18 Switch Connector And O19 Motor Connector Terminals
      G06197109Courtesy 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 LH 
    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
      O18-2 (UP) - O18-5 (GND) Manual UP operation Below 1 Ω
      O18-10 (DOWN) - O18-5 (GND) Manual DOWN operation Below 1 Ω
      Fig 4: Identifying Rear Power Window Regulator Switch Assembly LH And Connector Terminals
      G06197110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

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