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Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 422 (Power Window Control System - Diagnostics) >> Power Windows Do Not Operate At All >> 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 Fuse (Power) 
    1. Remove the fuse from the instrument panel J/B assy.
    2. Check the continuity.

      Standard: Continuity 

    1. OK: Go to Next Step 
    2. NG: Replace Fuse 
  2. Inspect Instrument Panel Junction Block Assy 
      Fig 1: Identifying Power Window Relay Terminal
      G02815500Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the power window relay.
    2. Turn the ignition switch ON.
    3. Check the voltage between the J/B terminals 1 and 2.

      Standard: 10 - 14 V 

    1. OK: Go to Next Step 
    2. NG: Replace Instrument Panel Junction Block Assy 
  3. Inspect Power Window Relay (Power) 
      Fig 2: Identifying Power Window Relay Terminal (Power)
      G02815502Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the relay from the backside of the instrument panel J/B assy.
    2. Check the continuity.

      Standard: 

      Fig 3: Power Window Relay Specifications Table
      G02815501Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go to Next Step 
    2. NG: Replace Power Window Relay 
  4. Check Harness And Connector (Terminal B2, BW or E) 
      Fig 4: Identifying D17 Master Switch Connector Terminals (1 Of 2)
      G02815504Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D17 master switch connector.
    2. Check the voltage or continuity between each terminal of the wire harness side connector and body ground.

      Standard: 

      Fig 5: D17 Master Switch Connector Specifications Table
      G02815503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go to Next Step 
    2. NG: Repair Or Replace Harness And Connector 
  5. Check Harness And Connector (Terminal B) 
      Fig 6: Identifying D17 Master Switch Connector Terminals (2 Of 2)
      G02815505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Turn the ignition switch ON.
    2. Check the voltage between terminal 6 of the wire harness side connector and the body ground.

      Standard: 10 - 14 V 

    1. OK: Replace Power Window Regulator Master Switch Assy 
    2. NG: Repair Or Replace Harness And Connector (Power Window Relay >--< Master Switch) 
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