POWER WINDOW CONTROL SYSTEM


  1. SYSTEM CONTROL


    1. The power window control system has the following functions:

      Function Outline
      Power Up-and-down (All Doors) This function causes the window to open or close while the multiplex network master switch assembly or power window regulator switch assembly is being pulled halfway up or pushed halfway down. The window stops as soon as the switch is released.
      One-touch Auto Up-and-down (All Doors) The one-touch auto up-and-down function enables the window to be fully opened or closed at a touch of the multiplex network master switch assembly or power window regulator switch assembly.
      Variable Speed Control (Rear Doors) This control minimizes the occurrence of noise during the power window open/close operation by changing the operating speed of the power window regulator motor.
      Jam Protection (All Doors) The jam protection function automatically stops the power window and moves it downward if a foreign object gets jammed in the window during one-touch auto-up operation or power up operation.
      Remote Control (All Doors) The multiplex network master switch assembly can control the up-and-down operation of the windows.
      Window Lock

      • Operation of the 3 passenger windows is disabled when the window lock switch is pressed.

      • Similarly, the power window illumination of the power window regulator switches, except the one for the driver door, are turned off to inform the occupants that the windows cannot be operated.
      Key Off Operation

      • This function makes it possible to operate the power windows for approximately 43 seconds after the power switch is turned off, if either front door is not opened.

      • If the window lock switch is off, the windows can be operated using any of the power window regulator switch assemblies. If the window lock switch is on, only the multiplex network master switch assembly can be used to operate the windows (remote operation remains possible).

      Tech Tips

      The ECU built into each power window regulator motor stores the initial position of its door window. The initial position is not cleared even if battery terminals, fuses or the power window regulator motor connector is disconnected. However, after removing or reinstalling window components, or replacing the power window regulator sub-assembly or power window regulator motor, the stored initial position data must be cleared and/or initialization must be performed. For details, refer to the Repair Manual.

    2. Variable Speed Control


      1. Opening Power Window


        1. In order to minimize the noise when the power window open function starts operating, the power window ECU accelerates the window opening speed up to a certain position.

        2. In order to minimize the noise when the power window is opened fully, the power window ECU decelerates the window opening speed from a certain position.

          A0050Q0E04
        Text in Illustration
        *1 Acceleration *2 Normal Speed
        *3 Deceleration *4 Door Window Glass

      2. Closing Power Window


        1. In order to minimize the noise when the power window close function starts operating, the power window ECU accelerates the window closing speed up to a certain position.

        2. In order to minimize the noise when the power window is closed fully, the power window ECU decelerates the window closing speed from a certain position.

          A0050PFE02
        Text in Illustration
        *1 Deceleration *2 Normal Speed
        *3 Acceleration *4 Door Window Glass

    3. Jam Protection Function


      1. The jam protection function automatically stops the power window and moves it downward if a foreign object gets jammed in the door window during one-touch auto up operation or power up operation.

      2. The operation of the jam protection function is described below.

        Door Window Position from Full Close Operation
        200 mm (7.87 in.) or more Down operation of 125 mm (4.93 in.) or 2.5 seconds
        200 mm (7.87 in.) or less Down operation until door window downward movement of 200 mm (7.87 in.) is reached, or 5 seconds elapses.

      3. The magnet and 2 Hall ICs in the power window regulator motor assembly are used to enable power window jam protection.

        A0050YSE14
        Text in Illustration
        *1 Hall IC *2 Worm Gear
        *3 Magnet - -

      4. The Hall ICs convert the changes in the magnetic flux that occur through the rotation of the magnet into pulse signals and outputs them to the ECU built-into the power window regulator motor assembly.

      5. To control the jam protection function, the ECU determines the amount of movement and jamming of the window glass based on the pulse signal A from the Hall IC; and judges the direction of the window glass movement based on the phase difference between the pulses from the Hall IC signals A and signals B.

        A0050W3E12

  2. FAIL-SAFE


    1. If a Hall IC in the power window regulator motor malfunctions, some power window functions will be prohibited for the fail-safe mode:


      1. Each power window operates when the corresponding power window switch is fully pushed down or pulled up and held in that position.

  3. DIAGNOSIS


    1. When any power window ECU detects the following condition, it switches to fail-safe mode.


      1. An abnormality in a Hall IC that detects the position, speed and direction of the window.