POWER WINDOW CONTROL SYSTEM


  1. SYSTEM CONTROL


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

      Function Outline
      Power Up-and-down 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

      (All Doors*1/Front Doors*2)

      		 Enables the window to be fully opened or closed at a touch of the power window regulator master switch assembly or power window regulator switch assembly.

      Variable Speed Control

      (All Doors*1/Front Doors*2)

      		 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*1/Front Doors*2)

      		 Automatically stops the power window and moves it downward if a foreign object gets jammed in the door window glass during one-touch auto-up operation or power up operation.
      Remote Control Enables the power window regulator master switch assembly to control the up-and-down operation of the windows.
      Window Lock

      • Disables operation of the 3 passenger windows using each power window regulator switch assembly when the window lock switch is on.

      • Even when the window lock switch is on, the 3 passenger windows can be operated using the power window regulator master switch assembly.
      Key Off Operation

      • Makes it possible to operate the power windows for approximately 43 seconds after the ignition switch is turned from ON to ACC or 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, only the power window regulator master switch assembly can be used to operate the windows.

      • 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*3 When the driver door is locked, and the driver door key cylinder is turned and held in the lock position 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 key cylinder is turned. Similarly, when the driver door is unlocked, turning and holding the driver door key cylinder in the unlock position for 1.5 seconds or more will cause all door windows to be lowered.
      Transmitter-linked Up-and-Down*3 When the door control receiver receives a lock signal from the electrical key transmitter sub-assembly*4 or door control transmitter assembly*5 for longer than 3 seconds, the main body ECU (multiplex network body ECU) controls the power window motors in accordance with the signal to close the windows. Similarly, when the door control receiver receives an unlock signal from the electrical key transmitter sub-assembly*4 or door control transmitter assembly*5 for longer than 3 seconds, the main body ECU (multiplex network body ECU) controls the power window motors in accordance with the signal to open the windows.

      *1: Models with jam protection function on 4 windows

      *2: Models with jam protection function on front door windows

      *3: Customizable parameters can be configured through customize settings. For details, refer to the Repair Manual.

      *4: Models with smart entry and start system

      *5: Models without smart entry and start system

      Tech Tips

      The ECU built into each power window motor stores the initial position of its door window glass. The initial position is not cleared even if the cable is disconnected from the negative (-) battery terminal, or if fuses or the power window motor connector are disconnected. However, after removing or reinstalling window components, or replacing the 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 starts operating, the power window regulator motor assembly increases the door window glass opening speed to normal speed when the front door window glass is in a position between fully closed and approximately 65 mm (2.56 in.) open, and when the rear door window glass is in a position between fully closed and approximately 68 mm (2.68 in.) open. Also, the assembly reduces the opening speed from normal speed when the front door window glass or rear door glass is in a position between fully opened and approximately 145 mm (5.71 in.) closed.

          A018GNDC01
          *1 Front Door Window Glass *2 Rear Door Window Glass
          *a Accelerating *b Normal Speed
          *c Decelerating - -

      2. Closing Power Window


        1. To minimize noise when the power window up function starts operating, the power window regulator motor assembly increases the door window glass closing speed to normal speed when the front door window glass or rear door window glass is in a position between fully opened and approximately 24 mm (0.95 in.) closed. Also, the assembly reduces the closing speed from normal speed when the front door window glass is in a position between fully closed and approximately 100 mm (3.94 in.) open, and when the rear door window glass is in a position between fully closed and approximately 104 mm (4.09 in.) open.

          A018GFFC01
          *1 Front Door Window Glass *2 Rear Door Window Glass
          *a Decelerating *b Normal Speed
          *c Accelerating - -

    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 Glass Position from Fully Closed Operation
        200 mm (7.87 in.) or more Down operation until door window glass downward movement of 125 mm (4.93 in.) is reached, or 2.5 seconds elapse
        200 mm (7.87 in.) or less Down operation until door window glass downward movement of 200 mm (7.87 in.) is reached, or 5 seconds elapse

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

        A018GPXC03
        *1 Hall IC *2 Worm Gear
        *3 Magnet - -

      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 ECU determines the amount of movement and jamming of the door window glass based on the pulse of Hall IC signal A and judges the direction of the door window glass movement based on the phase difference between the pulses of Hall IC signals A and B.

        A018GDOE25

  2. FAIL-SAFE


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


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

  3. DIAGNOSIS


    1. If a power window ECU detects a malfunction in the power window control system, a Diagnostic Trouble Code (DTC) is stored in memory.


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