POWER WINDOW CONTROL SYSTEM DETAILS


  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 by firmly operating the multiplex network master switch assembly or power window regulator switch assembly.
      Variable Speed Control (All Doors) This control minimizes the occurrence of noise during the power window open/close operation by changing the operating speed of the power window 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.
      Key Off Operation This function makes it possible to operate the power windows for approx. 43 seconds after the engine switch is turned off, when the driver door is not opened.
      Mechanical key-linked Up-and-down* When the electrical key transmitter sub-assembly is not in the interior detection area, the driver's door is locked, and the mechanical key in the driver's door is turned and maintained in the lock direction for 1.5 seconds or more, the main body ECU activates the power window motor to close all the door windows while the mechanical key is turned. Similarly, when the driver's door is unlocked, turning and maintaining the driver's door key in the unlock direction for 1.5 seconds or more will cause all the door windows to be opened.
      Transmitter-linked Up-and-down* When a lock/unlock signal is transmitted by the electrical key transmitter sub-assembly for longer than 2.5 seconds to the certification ECU, the certification ECU transmits the window close/open signal to the main body ECU. Power window ECUs activate all the power window motors in accordance with the signals from the main body ECU to open or close all the windows.
      Lock Switch-linked Up Function All the windows are closed when the lock switch on the outside door handle is pressed for 3 seconds or more with the key in the detection area and all the doors locked. This function can be performed using the door lock switch of any door.

      Tech Tips

      *: The setting function can be changed using the customized body electronics system.

      The power window ECU stores the initial position. The memory is not cleared even if auxiliary battery terminals, fuses or power window ECU connectors are disconnected. However, the power window regulator motor assembly needs to be initialized if it is replaced with a new one or it is reinstalled with the power window regulator sub-assembly. 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 within approximately 80 mm (3.2 in.) of the window fully closed position.

        2. In order to minimize the noise when the power window is opened fully, the power window ECU decelerates the window opening speed within approximately 100 mm (4.0 in.) of the window fully open position.

        3. The power window ECU stops the power window just before it reaches fully open position of the power window regulator assembly to minimize the noise when the window is opened fully.

          A01GDY2E01
          Text in Illustration
          *1 Door Window Glass - -
          *a Acceleration *b Normal Speed
          *c Deceleration - -

      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 within approximately 25 mm (1.0 in.) of the window fully open position.

        2. In order to minimize the noise when the power window is closed fully, the power window ECU decelerates the window closing speed within approximately 30 mm (1.2 in.) of the window fully closed position.

          A01GE17E01
          Text in Illustration
          *1 Door Window Glass - -
          *a Deceleration *b Normal Speed
          *c Acceleration - -

    3. Jam Protection Function


      1. A 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.

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

        Door Window Position from Fully Closed Operation
        200 mm (7.87 in.) or more Down operation of 50 mm (1.97 in.) or 2.5 seconds
        200 mm (7.87 in.) or less Down operation until door window operation of 200 mm (7.87 in.) is reached or 5 seconds

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

        A01GE4SE01
        Text in Illustration
        *1 Hall IC *2 Magnet
        *3 Worm Gear - -

      4. The Hall IC converts the changes in the magnetic flux that occur through the rotation of the magnet into pulse signals and outputs them to the power window ECU.

      5. To control the jam protection function, the ECU determines the amount of movement and jamming of the window glass based on the pulse signals from the Hall IC.

        A01GDQ9E01

  2. FAIL-SAFE


    1. If a Hall IC in the power window motor malfunctions, some power window functions will are 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.