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Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 422 (Power Window Control System - Diagnostics) >> Manual Up/Down Function Does Not Operate (Driver Side) >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect Power Window Regulator Master Switch Assy 
    1. Remove the master switch.
    2. Check the continuity between the terminals of the switch when the AUTO switch is operated.
      Fig 1: Identifying Power Window Regulator Master Switch Terminals
      G02815470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 2: AUTO Switch Specifications Table
      G02815469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go To Next Step 
    2. NG: Replace Power Window Regulator Master Switch Assy 
  2. Check Harness And Connector (Master Switch >--< Motor) 
    1. Disconnect the D17 master switch connector.
    2. Disconnect the P12 power window motor connector.
    3. Check the continuity between the wire harness side connectors.
      Fig 3: Identifying D17 & P12 Connector Terminals
      G02815472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 4: Master Switch & Motor Specifications
      G02815471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reference:

      Check operation of the power window motor (driver side).

      1. Remove the motor (See FRONT DOOR ).
      2. Apply battery voltage to the connector terminals 1 and 2.
      3. Check that the motor rotates smoothly.
        Fig 5: Checking Motor Gear Rotation
        G02815474Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: Do not apply battery voltage to any terminal except terminals 1 and 2.

      Standard: 

      Fig 6: Power Window Motor Specifications Table
      G02815473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Replace Power Window Regulator Motor Assy LH (Driver Side) 
    2. NG: Repair Or Replace Harness And Connector