2007 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Inspection Procedure

  1. CHECK MANUAL UP/DOWN FUNCTION (DRIVER SIDE) 
    1. Check that the door glass can be operated manually.

    NG: OTHER PROBLEM 

    OK: Go to next step 

  2. CHECK ILLUMINATION (POWER WINDOW MASTER SWITCH) 
    Fig 1: Identifying Power Window Master Switch
    G05266757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Turn the ignition switch ON.
    2. Operate the driver switch of the master switch.
    3. Fig 2: Identifying Blinking Pattern Of Power Window Master Switch
      G05266758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Check the blinking pattern of the illumination.
    1. If pattern (1) is displayed, proceed to A.
    2. If pattern (2) or (3) is displayed, proceed to B.
    3. If the normal pattern is displayed, proceed to C.

    B:  Go to step  4

    C: REPLACE POWER WINDOW REGULATOR MASTER SWITCH 

    A: Go to next step 

  3. RESET POWER WINDOW REGULATOR MOTOR (DRIVER SIDE) 
    1. Turn the ignition switch ON.
    2. Open the door glass.
    3. Fully pull up the power window switch until the door glass is fully closed.
    4. Continue to hold the switch 1 second or more even after the door glass is fully closed.
    5. Check that the AUTO UP/DOWN function operates completely.

    OK: END 

    NG: Go to next step 

  4. CHECK HARNESS (POWER WINDOW REGULATOR MASTER SWITCH - POWER WINDOW MOTOR) 
    Fig 3: Identifying Power Window Regulator Master Switch & Power Window Motor Connector Terminals
    G05266759Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the driver side door trim board.
    2. Disconnect the D18 master switch connector.
    3. Disconnect the P10 power window motor connector.
    4. Check the continuity between the wire harness side connectors.

      Standard resistance 

    RESISTANCE SPECIFICATION

    Terminal No. Specified Condition
    D18-19 - P10-4 Below 1 Ω
    D18-5 - P10-5 Below 1 Ω
    D18-15 - P10-3 Below 1 Ω
    D18-12 - P10-6 Below 1 Ω
    D18-5 - Body ground No continuity
    D18-12 - Body ground No continuity
    D18-15 - Body ground No continuity
    D18-19 - Body ground No continuity

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE POWER WINDOW REGULATOR MOTOR (DRIVER SIDE) 

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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