LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> GX 470 >> Repair and Diagnosis >> Body & Frame >> Windows >> Windshield/WINDOWGLASS >> Power Window Control System >> Manual Up/Down Function Does Not Operate On Rear LH Only >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

  1. INSPECT POWER WINDOW REGULATOR SWITCH (REAR LH) 
    Fig 1: Identifying Power Window Regulator Switch Connector Terminals
    G05266739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the power window switch (the connector is connected).
    2. Check the continuity between terminal 7 and the body ground.

      Standard resistance: 

      Below 1 Ω 

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

  2. INSPECT POWER WINDOW REGULATOR SWITCH (REAR LH) 
    Fig 2: Identifying Power Window Regulator Switch Connector Terminals
    G05266739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the voltage between terminals 12 and 7.

      Standard voltage: 

      10 to 14 V (Constant) 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (WINDOW REGULATOR SWITCH - POWER SOURCE) 

    OK: Go to next step 

  3. INSPECT POWER WINDOW REGULATOR SWITCH (REAR LH) 
    Fig 3: Identifying Power Window Regulator Switch Connector Terminals
    G05266739Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Turn the ignition switch ON.
    2. Check the voltage between terminals 11 and 7 when operating the window lock switch on the master switch.

      Standard voltage 

    VOLTAGE SPECIFICATION

    Terminal No. Window Lock Switch Specified Condition
    11 - 7 ON 5 V
    OFF Less than 1 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (WINDOW REGULATOR SWITCH - WINDOW REGULATOR MASTER SWITCH) 

    OK: Go to next step 

  4. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH - POWER WINDOW MOTOR) 
    Fig 4: Identifying Power Window Regulator Switch & Power Window Regulator Motor Connector Terminals
    G05266748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the P8 power window switch connector.
    2. Remove the rear door trim LH.
    3. Disconnect the P12 power window motor connector.
    4. Check the continuity between the wire harness side connectors.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Terminal No. Specified Condition
    P8-1 - P12-2 Below 1 Ω
    P8-6 - P12-1 Below 1 Ω
    P8-1 - Body ground No continuity
    P8-6 - Body ground No continuity

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. INSPECT POWER WINDOW REGULATOR MOTOR (REAR LH) 
    Fig 5: Identifying Power Window Regulator Motor (Rear LH)
    G05266749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the motor.
    2. Apply battery voltage to the connector between terminals 1 and 2.
    3. Check that the motor rotates smoothly.
    NOTE: Do not apply battery voltage to the terminals except 1 and 2.

    Standard 

    TERMINALS AND MOTOR GEAR ROTATION REFERENCE

    Terminal No. Motor Gear Rotation
    Battery positive voltage → 2
    Battery negative voltage → 1
    Clockwise
    Battery positive voltage → 1
    Battery negative voltage → 2
    Counterclockwise

    NG: REPLACE POWER WINDOW REGULATOR MOTOR 

    OK: REPLACE POWER WINDOW REGULATOR SWITCH (REAR LH)