POWER WINDOW CONTROL SYSTEM


  1. SYSTEM CONTROL


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

      Function Outline
      Manual Up-and-down The manual up-and-down 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 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.
      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 or manual up operation.
      Catch Protection The catch protection function automatically stops the power window if a foreign object gets caught in the window during a down operation.
      Soft Stop During an up or down operation of the power window, the power window ECU stops the current to the power window motor right before the door glass is fully closed or opened.
      Remote Control The multiplex network master switch assembly can control the up-and-down operation of all door windows.
      Window Lock Operation of the passenger windows is disabled when the window lock switch is pressed.
      Key Off Operation The key off operation function makes it possible to operate the power windows for approximately 43 seconds after the ignition switch (engine switch*1) is turned off, if either front door is not opened.
      Key-linked Up-and-down*2, *3 When the driver door is locked, and the transmitter in the driver door is turned and maintained in the lock direction for 1.5 seconds or more, the main body ECU activates the power window motors to raise all door windows while the key is turned. Similarly, when the driver door is unlocked, turning and maintaining the driver door key in the unlock direction for 1.5 seconds or more will cause all door windows to be lowered.
      Transmitter-linked Up-and-down*2, *3

      • When the door control receives an unlock signal from the transmitter for longer than 2.5 seconds, the main body ECU controls the power window motors in accordance with the signal to open the windows.

      • When the door control receives a lock signal from the transmitter for longer than 2.5 seconds, the main body ECU controls the power window motors in accordance with the signal to close the windows.

      Tech Tips


      • *1: Models with entry and start system

      • *2: Customizable parameters can be configured by means of the customized body electronics system (default setting: off). For details, refer to the Repair Manual.

      • *3: The key is not detected within the interior detection area on models with entry and start system.


      1. The ECU which is 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, the stored initial position data must be cleared and 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 or manual up operation.

      2. Even when the power window regulator switch assembly is maintained in the auto up position, the power window operates in reverse if a jam is detected.

      3. In the case of manual up operation using the power window regulator switch assembly, the power window is moved downward by approximately 30 mm (1.2 in.) or for approximately 5 seconds. In the case of up operation except for manual up operation using the power window regulator switch assembly, the power window is moved downward by approximately 125 mm (4.9 in.) or for approximately 5 seconds.

      4. The power window ECU determines if a foreign object gets jammed according to changes in the output signal from the pulse sensor (Hall IC). Both of the following 2 judgment methods are used:

        A01UKSOE02
        *1 Judgment Method (Overload Detection)
        *2 Pulse Signal 1
        *3 Pulse Signal 2
        *4 Judged Jammed
        A01UKGDE03

    3. Catch Protection Function


      1. The catch protection function automatically stops the power window if a foreign object gets caught in the window during a down operation.

      2. The power window ECU determines if a foreign object gets caught according to changes in the output signal from the pulse sensor (Hall IC). The judgment method is as follows:

        A01UKPTE03

    4. Soft Stop Function


      1. During an up or down operation of the power window, the soft stop function stops the current to the power window motor right before the door glass is fully closed or opened. This reduces the load on the door glass outer weatherstrip.

      2. Just before the door glass is fully closed, the power window ECU determines if the door glass stop position is detected according to changes in the output signal from the pulse sensor (Hall IC). The judgment method is as follows:

        A01UL8QE03

  2. CONSTRUCTION


    1. The power window regulator motor assembly consists of a power window motor and a power window ECU.

    2. The power window ECU contains a built-in pulse sensor (Hall IC). The power window ECU detects the rotation of the power window motor according to output signals from the pulse sensor (Hall IC).

      A01UKYZE02
      Text in Illustration
      *1 Power Window Motor *2 Power Window ECU

    3. Pulse Sensor (Hall IC)


      1. The pulse sensor (Hall IC) sends pulse signals (2 pulse signals with different phases) in sync with the motor rotation to the power window ECU.

        A01UL4TE01
        Text in Illustration
        *1 Power Window ECU *2 Pulse Sensor (Hall IC)
        *3 Magnet *4 Worm Shaft

      2. The power window ECU detects the amount of door glass movement by counting pulse signal 1 sent from the pulse sensor (Hall IC). The power window ECU also detects the direction of the door glass movement using 2 types of signals: pulse signal 1 and pulse signal 2 which have different phases. The power window ECU controls each function according to the data about the door glass position obtained from the 2 pulse signals.

        A01UKLUE01

      3. The power window ECU detects changes in the motor rotation speed using pulse signal 1. As a result, the power window ECU detects the load applied to the door glass and controls the jam protection, catch protection and soft stop functions.

        A01UKHWE04
        *1 Pulse Signal 1
        *2 Normal
        *3 Door Glass Movement Speed Detection
        *4 Jammed

  3. FAIL-SAFE


    1. If a pulse sensor (Hall IC) in the power window regulator motor assembly malfunctions, the power window control system enters fail-safe mode. For details, refer to the Repair Manual.