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Home >> Lexus >> 2005 >> RX 330 AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostics >> Manual Up/Down Function Does Not Operate At Rear LH >> Inspection Procedure
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Inspection Procedure

  1. CHECK AUTO UP/DOWN FUNCTION (REAR LH) 
    1. Check that the power window AUTO UP/DOWN function operates normally.
    1. NG: Go to step 2. 
    2. OK: REPLACE POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR LH) 
  2. INSPECT FUSE (RR DOOR LH) 
    1. Remove the RR DOOR LH fuse from the instrument panel J/B.
    2. Check the resistance.

      Standard: Below 1 Ω 

    1. NG: REPLACE FUSE 
    2. OK: Go to next step. 
  3. CHECK WIRE HARNESS (FOR POWER SOURCE OF REAR LH POWER WINDOW REGULATOR SWITCH ASSY) 
    1. Disconnect the P20 regulator switch connector.
    2. Check the voltage between the wire harness side connector and the body ground.

      Standard: 

      FOR POWER SOURCE OF REAR LH POWER WINDOW REGULATOR SWITCH ASSY

      Tester Connection Specified Condition
      P20-12 (BDR) - Body ground 10 to 14 V
      Fig 1: Checking Wire Harness (For Power Source Of Rear LH Power Window Regulator Switch Assy)
      G03009683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  4. CHECK WIRE HARNESS (FOR GROUND OF REAR LH POWER WINDOW REGULATOR SWITCH ASSY) 
    1. Disconnect the P20 regulator switch connector.
    2. Check the resistance between the wire harness side connector and body ground.

      Standard: 

      FOR GROUND OF REAR LH POWER WINDOW REGULATOR SWITCH ASSY

      Tester Connection Specified Condition
      P20-7 (GND) - Body ground Below 1 Ω
      Fig 2: Checking Wire Harness (For Ground Of Rear LH Power Window Regulator Switch Assy)
      G03009684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  5. CHECK WIRE HARNESS (FOR WINDOW LOCK SWITCH OF REAR LH POWER WINDOW REGULATOR SWITCH ASSY) 
    1. Remove the regulator switch (the connector is connected).
    2. Turn the ignition switch ON.
    3. Check the voltage between the terminals.

      Standard: 

      FOR WINDOW LOCK SWITCH OF REAR LH POWER WINDOW REGULATOR SWITCH ASSY

      Window Lock Switch Condition Tester Connection Specified Condition
      ON (Normal) P20-11 (PCT1) - P20-7 (GND) 10 to 14 V
      OFF (Lock) P20-11 (PCT1) - P20-7 (GND) Below 1 V
      Fig 3: Checking Wire Harness (For Window Lock Switch Of Rear LH Power Window Regulator Switch Assy)
      G03009685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  6. CHECK WIRE HARNESS (POWER WINDOW REGULATOR SWITCH ASSY - POWER WINDOW REGULATOR MOTOR ASSY AND BODY GROUND) 
    1. Disconnect the P20 power window switch connector.
    2. Disconnect the P25 power window motor connector.
    3. Check the resistance of the wire harness side connectors.

      Standard: 

      Fig 4: Power Window Regulator Switch Assy - Power Window Regulator Motor Assy And Body Ground Table
      G03009686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 5: Checking Wire Harness (Power Window Regulator Switch Assy - Power Window Regulator Motor Assy And Body Ground)
      G03009687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: Go to next step. 
  7. CHECK POWER WINDOW REGULATOR SWITCH ASSY (REAR LH) 
    1. Remove the regulator switch (the connector is connected).
    2. Turn the ignition switch ON.
    3. Check the voltage between the terminals.

      Standard: 

      Fig 6: Power Window Regulator Switch Assy (Rear LH) Table
      G03009688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Checking Power Window Regulator Switch Assy (Rear LH)
      G03009689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE POWER WINDOW REGULATOR SWITCH ASSY REAR 
    2. OK: REPLACE POWER WINDOW REGULATOR MOTOR ASSY LH (REAR LH) 

    Reference:

    Check operation of the power window motor (rear LH).

    1. Remove the motor (See OVERHAUL ).
    2. Apply battery voltage to terminals 1 and 2.
    3. Check that the motor rotates smoothly.
      NOTE: Do not apply battery voltage to any terminal except 1 and 2.
      Fig 8: Checking Motor Rotates Smoothly
      G03009690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      POWER WINDOW MOTOR (REAR LH) OPERATING CONDITIONS

      Measurement Condition Specified Condition
      Battery positive (+) -> 1 Motor gear rotates clockwise
      Battery negative (-) -> 2
      Battery positive (+) -> 2 Motor gear rotates counterclockwise
      Battery negative (-) -> 1