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Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch >> 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.

    Result: 

    RESULT REFERENCE

    Result Proceed to
    DTC is not output A
    DTC is output B

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

    A: Go to Next Step 

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

    Result: 

    RESULT REFERENCE

    Result Proceed to
    B2312 is not output A
    B2312 is output B

    B: GO TO DTC B2312  (see DTC B2312 POWER WINDOW SWITCH MALFUNCTION )

    A: Go to Next Step 

  3. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (FRONT PASSENGER SIDE MOTOR) 
    1. Use the Data List to check if the power window regulator motor is functioning properly.
      1. Intelligent tester

        P DOOR MOTOR: 

        DATA LIST - P DOOR MOTOR

        Tester Display Measurement Item/Range Normal Condition
        P P/W UP SW Front passenger side power window manual UP switch signal / ON or OFF ON Front passenger side power window manual UP switch operated
        OFF Front passenger side power window switch not operated
        P P/W DOWN SW Front passenger side power window manual DOWN switch signal / ON or OFF ON Front passenger side power window manual DOWN switch operated
        OFF Front passenger side power window switch not operated
      2. Techstream

      P-Door Motor: 

      DATA LIST - P DOOR MOTOR

      Tester Display Measurement Item/Range Normal Condition
      P Door P/W Up SW Front passenger side power window manual UP switch signal / ON or OFF ON Front passenger side power window manual UP switch operated
      OFF Front passenger side power window switch not operated
      P Door P/W Down SW Front passenger side power window manual DOWN switch signal / ON or OFF ON Front passenger side power window manual DOWN switch operated
      OFF Front passenger side power window switch not operated

    OK: Tester display changes normally when front passenger side power window switch is operated. 

    NG:  Go to step  4

    OK: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH  (see REMOVAL )

  4. CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE DOOR ECU - FRONT PASSENGER SIDE SWITCH) 
    1. Disconnect the P4 ECU connector.
    2. Disconnect the N6 switch connector.
    3. Measure the resistance according to the value (s) in the table below

    Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    P4-27 (SGND) - N6-5 (GND) Always Below 1 Ω
    P4-27 (SGND) or N6-5 (GND) - Body ground Always 10 kΩ, or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 1: Identifying P4 ECU And N6 Switch Connectors
    G04952094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to Next Step 

  5. CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE DOOR ECU - FRONT PASSENGER SIDE MOTOR) 
    1. Disconnect the N1 ECU connector.
    2. Disconnect the N3 motor connector.
    3. Measure the resistance according to the value (s) in the table below

    Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    N1-5 (BDRJ) - N3-2 (B) Always Below 1 Ω
    N1-2 (PWE) - N3-1 (E) Always Below 1 Ω
    N1-5 (BDRJ) or N3-2 (B) - Body ground Always 10 kΩ or higher
    N1-2 (PWE) or N3-1 (E) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying N1 ECU And N3 Motor Connectors
    G05776650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to Next Step 

  6. CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE SWITCH - FRONT PASSENGER SIDE MOTOR) 
    1. Disconnect the N6 switch connector.
    2. Disconnect the N3 motor connector
    3. Measure the resistance according to the value (s) in the table below.

    Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Tester Connection Condition Specified Condition
    N6-2 (UP) - N3-10 (UP1) Always Below 1 Ω
    N6-10 (DOWN) - N3-7 (DWN1) Always Below 1 Ω
    N6-2 (UP) or N3-10 (UP1) - Body ground Always 10 kΩ or higher
    N6-10 (DOWN) or N3-7 (DWN1) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 3: Identifying N6 Switch And N3 Motor Connectors
    G04952115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to Next Step 

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

    Standard resistance 

    STANDARD RESISTANCE SPECIFICATION

    Tester Connection Switch Condition Specified Condition
    N6-2 (UP) - N6-5 (GND) Manual UP operation Below 1 Ω
    N6-10 (DOWN) - N6-5 (GND) Manual DOWN operation Below 1 Ω

    NG: REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY  (see REMOVAL )

    Fig 4: Identifying N6 Power Window Regulator Switch Connector
    G05776652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH  (see REMOVAL )

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