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 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 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 illumination of the power window regulator switches, except the one for the driver door, is 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, the windows cannot be operated.

      • If the driver door or front passenger door is opened during automatic window operation while the key-off operation function is on, the window will stop operating.
      Key-linked Up-and-down

      When the electrical key transmitter sub-assembly is not in the interior detection area, the driver door is locked, and the mechanical key in the driver door is turned and maintained in the lock direction for 1.5 seconds or more, the main body ECU (multiplex network body ECU) activates the power window motors to raise all door windows while the mechanical key is turned.

      Similarly, when the driver door is unlocked, turning and maintaining the driver door key cylinder in the unlock direction for 1.5 seconds or more will cause all door windows to be lowered.
      Transmitter-linked down When the certification ECU (smart key ECU assembly) receives an unlock signal from the transmitter for longer than 3 seconds, the main body ECU (multiplex network body ECU) controls their power window motors in accordance with the signal to open the windows.
      Power Window Glass Open Warning When the power switch is turned from on (IG) to off and the driver door is opened with the power window glass open, the buzzer in the combination meter assembly sounds once. Then, a warning message appears on the multi-information display and the master warning light blinks.

      Tech Tips

      The ECU built into each power window motor stores the initial position of its door window. The initial position is not cleared even if the terminals, fuses or the power window motor connector are disconnected. However, after removing or reinstalling window components, or replacing the power window regulator switch assembly or power window regulator motor assembly, 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. To minimize noise when the power window down function is in operation, the power window regulator motor assembly increases the door window glass opening speed to normal speed when the front door window glass is between the fully closed position and an open position of approximately 70 mm (2.8 in.), and when the rear door window glass is between the fully closed position and an open position of approximately 90 mm (3.5 in.). Also, the assembly reduces the opening speed from normal speed when the front door window glass is between the fully opened position and an open position of approximately 150 mm (5.9 in.), and when the rear door window glass is between the fully opened position and an open position of approximately 135 mm (5.3 in.).

          A0002YXE03
          Text in Illustration
          *1 Front Door Window Glass *2 Rear Door Window Glass
          *a Acceleration *b Normal Speed
          *c Deceleration - -

      2. Closing Power Window


        1. To minimize noise when the power window up function is in operation, the power window regulator motor assembly increases the door window glass closing speed to normal speed when the front door window glass and rear door window glass are between the fully opened position and an open position of approximately 25 mm (1 in.). Also, the assembly reduces the closing speed from normal speed when the front door window glass is between the fully closed position and an open position of approximately 105 mm (4.1 in.), and when the rear door window glass is between the fully closed position and an open position of approximately 120 mm (4.7 in.).

          A0002Y7E03
          Text in Illustration
          *1 Front Door Window Glass *2 Rear Door Window Glass
          *a Deceleration *b Normal Speed
          *c Acceleration - -

    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 Hall IC in the power window motor are used to enable power window jam protection.

        A0002SUE10
        Text in Illustration
        *1 Hall IC *2 Worm Gear
        *3 Magnet - -

      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 ECU built-into the power window motor.

      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 Hall IC signals A and B.

        A0002MXE32

  2. FAIL-SAFE


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


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

  3. DIAGNOSIS


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


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