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Home >> Lexus >> 2013 >> LS 460L AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (Diagnostic Codes & Symptom Tests) >> Power Window Control System >> Symptom Tests >> Rear Power Window LH does not Operate with Rear Power Window Switch LH >> Procedure
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Rear Power Window LH does not Operate with Rear Power Window Switch LH: 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 → See step   11 

    OK: Go to next step 

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

      OK

      DTC B2312 is not output.

    NG → See step   9 

    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:

      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 → See step   4 

    OK → See step   8 

  4. CHECK HARNESS AND CONNECTOR (REAR MULTIPLEX NETWORK DOOR ECU LH - REAR POWER WINDOW REGULATOR SWITCH LH) 
    1. Disconnect the O15 ECU connector.
      GTY288719Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the O18 switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      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

    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.
      GTY269402Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the O19 motor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      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

    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.
      GTY288659Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the O19 motor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      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

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH 
    GTY288721Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the switch.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      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

    NG → See step   10 

    OK → See step   8 

  8. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to  REMOVAL [09/2012 - ] 
  9. GO TO DTC B2312. Refer to  DTC B2312: Power Window Switch Malfunction  
  10. REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH. Refer to  REMOVAL [09/2012 - ] 
  11. GO TO LIN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2012 - ]