POWER WINDOW CONTROL SYSTEM


  1. FUNCTION


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

      Function Outline
      Manual Up-and-down This function causes the window to open or close while driver side's switch of the power window regulator master switch assembly is being pulled halfway up or pushed halfway down, or while except driver side's switch of the power window regulator master switch or the power window regulator switch assembly is being pulled up or pushed down. The window stops as soon as the switch is released.
      One-touch Auto Up (Driver's Door) The one-touch auto up function enables the window to be fully closed at a touch of the power window regulator master switch assembly.
      Jam Protection (Driver's Door) 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 manual up operation.
      Remote Control The up-and-down operations of the front passenger door and rear door windows*1 can be controlled by operating the power window regulator master switch assembly.
      Window Lock Power window operation of the front passenger window* 2 or front and rear passenger windows*1 is disabled when the window lock switch is pressed.
      Key Off Operation The key-off operation function makes it possible to operate the power window for approx. 45 seconds after the power source is turned to ACC or off, if the driver door or passenger door is not opened.

      • *1: Models with rear power window control system

      • *2: Models without rear power window control system


      1. The power window ECU built into the driver power window regulator motor assembly 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 assembly connector is disconnected. However, after removing or reinstalling window components, or replacing the power window regulator sub-assembly or door window regulator motor assembly, the stored initial position data must be cleared and initialization must be performed. For details, refer to the Repair Manual.

  2. OPERATION


    1. 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 manual 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 125 mm (4.93 in.) or 2.5 seconds
        200 mm (7.87 in.) or less Down operation until the door window has moved down by 200 mm (7.87 in.), or until 5 seconds have elapsed

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

        A005G26E02
        Text in Illustration
        *1 Power Window Motor *2 Power Window ECU

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

      5. To control the jam protection function, the power window ECU determines the amount of movement and jamming of the window glass based on the pulse signals from the Hall IC1, and judges the direction of the window glass movement based on the phase difference between the pulses from the Hall IC1 and Hall IC2.

        A005FX7E02
        A005FQ6E02
        *1 Determination by Hall IC
        *2 Hall IC Output Signal
        *3 Normal
        *4 Jammed

  3. FAIL-SAFE


    1. If one of the Hall ICs in the power window regulator motor assembly malfunctions, some power window functions will be prohibited for the fail-safe mode:


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

      2. When any power window ECU detects an abnormality in one of the Hall ICs, which detects the position, speed and direction of the window, it switches to fail-safe mode.