POWER WINDOW CONTROL SYSTEM DETAILS


  1. SYSTEM CONTROL


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

      Function Outline
      Power Up-and-down This function causes the window to open or close while the power window regulator 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 The one-touch auto up-and-down function enables the window to be fully opened or closed at a touch of the power window regulator master switch assembly.
      Variable Speed Control 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 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.
      Remote Control The power window regulator 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 approximately 45 seconds after the ignition switch is turned off, if either front door is not opened.

      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 battery terminals, fuses or the power window motor connector is disconnected. However, after removing or reinstalling window components, or replacing the power window regulator sub-assembly or power window regulator motor, initialization must be performed. For details, refer to the Repair Manual.

    2. 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 and 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 50 mm (1.97 in.) or 1 second
        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 worm gear and 2 Hall ICs in the power window regulator motor assembly are used to enable power window jam protection.

        A01F0NKE04
        Text in Illustration
        *1 Hall IC *2 Worm Gear

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

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

        A01F0VHE02

  2. FAIL-SAFE


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


      1. All doors one-touch auto up-and-down function and the remote control functions are prohibited.

      2. Power operation is possible by using the power window regulator master switch assembly or each power window regulator switch assembly.

  3. DIAGNOSIS


    1. When the power window ECU detects malfunctions in the power window control system, DTCs are stored in memory.

    2. The DTCs can be read using the Global TechStream (GTS). For details, refer to the Repair Manual.