2005 Toyota Avalon LimitedFACTORY OEM SERVICE PROCEDURE

Power Window Control System: Inspection

  1. INSPECT MULTIPLEX NETWORK SWITCH ASSY 
    1. Remove the multiplex network switch assy.
    2. Measure the resistance of the switch when the switch is operated.

      Standard: 

      SPECIFIED CONDITION

      Switch Condition Tester Connection Specified Condition
      AUTO UP 1 (D) - 7 (E) 6 (U) - 12 (BW) Below 1 Ω
      UP 1 (D) - 7 (E) 6 (U) - 12 (BW) Below 1 Ω
      OFF 1 (D) - 7 (E) 6 (U) - 7 (E) Below 1 Ω
      DOWN 6 (U) - 7 (E) 1 (D) - 12 (BW) Below 1 Ω
      AUTO DOWN 6 (U) - 7 (E) 1 (D) - 12 (BW) Below 1 Ω

      If the result is not as specified, replace the multiplex network switch assy.

      Fig 1: Inspecting Multiplex Network Switch Assy
      G02975704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (DRIVER SIDE) 
    1. Check operation of the regulator motor.
      1. Remove the power window regulator motor assy.
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 1 and 2.
      3. Check that the motor operates smoothly.

        OK: 

        SPECIFIED CONDITION

        Measurement Condition Specified Condition
        Battery positive (+) --> Terminal 2 (U) Motor gear rotates clockwise
        Battery negative (-) --> Terminal 1 (D) Motor gear rotates clockwise
        Battery positive (+) --> Terminal 1 (D) Motor gear rotates counterclockwise
        Battery negative (-) --> Terminal 2 (U) Motor gear rotates counterclockwise
        Fig 2: Inspecting Power Window Regulator Motor Assy - Driver Side
        G02975705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 1 (D) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 2 (U) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 1 (D) and the negative (-) lead to terminal 2 (U). Check that the window begins to descend.

      If the result is not as specified, replace the motor assy.

      Fig 3: Checking PTC Operation Inside Regulator Motor
      G02975706Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (PASSENGER SIDE) 
    1. Check operation of the regulator motor.
      1. Remove the power window regulator motor assy.
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 1 and 2.
      3. Check that the motor operates smoothly.

        OK: 

        SPECIFIED CONDITION

        Measurement Condition Specified Condition
        Battery positive (+) --> Terminal 1 (D) Motor gear rotates clockwise
        Battery negative (-) --> Terminal 2 (U) Motor gear rotates clockwise
        Battery positive (+) --> Terminal 2 (U) Motor gear rotates counterclockwise
        Battery negative (-) --> Terminal 1 (D) Motor gear rotates counterclockwise
        Fig 4: Inspecting Power Window Regulator Motor Assy - Passenger Side
        G02975707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 2 (U) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 1 (D) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 2 (U) and the negative (-) lead to terminal 1 (D). Check that the window begins to descend.

      If the result is not as specified, replace the motor assy.

      Fig 5: Checking PTC Operation Inside Regulator Motor
      G02975708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (REAR LH) 
    1. Check operation of the regulator motor.
      1. Remove the power window regulator motor assy.
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 1 and 2.
      3. Check that the motor operates smoothly.

        OK: 

        SPECIFIED CONDITION

        Measurement Condition Specified Condition
        Battery positive (+) --> Terminal 2 (D) Motor gear rotates clockwise
        Battery negative (-) --> Terminal 1 (U) Motor gear rotates clockwise
        Battery positive (+) --> Terminal 1 (U) Motor gear rotates counterclockwise
        Battery negative (-) --> Terminal 2 (D) Motor gear rotates counterclockwise
        Fig 6: Checking Operation Of Regulator Motor
        G02975709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 1 (U) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 2 (D) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 1 (U) and the negative (-) lead to terminal 2 (D). Check that the window begins to descend.

      If the result is not as specified, replace the motor assy.

      Fig 7: Checking PTC Operation Inside Regulator Motor
      G02975710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT POWER WINDOW REGULATOR MOTOR ASSY (REAR RH) 
    1. Check operation of the regulator motor.
      1. Remove the power window regulator motor assy.
      2. Apply battery voltage to the motor terminals.
        NOTE: Do not apply voltage to the terminals except 1 and 2.
      3. Check that the motor operates smoothly.

        OK: 

        SPECIFIED CONDITION

        Measurement Condition Specified Condition
        Battery positive (+) --> Terminal 1 (U) Motor gear rotates clockwise
        Battery negative (-) --> Terminal 2 (D) Motor gear rotates clockwise
        Battery positive (+) --> Terminal 2 (D) Motor gear rotates counterclockwise
        Battery negative (-) --> Terminal 1 (U) Motor gear rotates counterclockwise
        Fig 8: Checking Operation Of Regulator Motor
        G02975711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check the PTC operation inside the regulator motor.
      NOTE: The work must be performed with the power window regulator and door glass installed in the vehicle.
      1. Disconnect the driver side power window regulator motor connector.
      2. Connect the ammeter's positive (+) lead to terminal 2 (D) of the wire harness side connector and the negative (-) lead to the battery's negative terminal.
      3. Connect the battery's positive (+) lead to terminal 1 (U) of the wire harness side connector, and raise the window to the fully closed position.
      4. Continue to apply voltage, and check that the current changes to less than 1 A within 4 to 90 seconds.
      5. Disconnect the leads from the terminals.
      6. Approximately 60 seconds later, connect the battery's positive (+) lead to terminal 2 (D) and the negative (-) lead to terminal 1 (U). Check that the window begins to descend.

      If the result is not as specified, replace the motor assy.

      Fig 9: Checking PTC Operation Inside Regulator Motor
      G02975712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.