POWER WINDOW CONTROL SYSTEM


  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 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.
      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 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 or power up operation.
      Remote Control The multiplex network master switch assembly can control the up-and-down operation of the windows.
      Window Lock

      • Operation of the 3 passenger windows at each power window regulator switch assembly is disabled when the window lock switch is pressed.

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

      • 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 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 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 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 Up-and-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 the power window motors in accordance with the signal to open the windows. Similarly, when the certification ECU (smart key ECU assembly) receives a lock signal from the transmitter 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.
      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 glass. 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 starts operating, the power window regulator motor 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 134 mm (5.3 in.), and when the rear door window glass is between the fully opened position and an open position of approximately 152 mm (6.0 in.).

          A01MRDMC03
          *1 Front Door Window Glass *2 Rear Door Window Glass
          *a Deceleration - -

      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 is between the fully opened position and an open position of approximately 21 mm (0.8 in.), and when the rear door window glass is between the fully opened position and an open position of approximately 30 mm (1.2 in.). Also, the assembly reduces the closing speed from normal speed when the front door window glass is between the fully closed position and a close position of approximately 80 mm (3.2 in.), and when the rear door window glass is between the fully closed position and a close position of approximately 100 mm (3.9 in.).

          A01MRC9C04
          *1 Front Door Window Glass *2 Rear Door Window Glass
          *a Deceleration *b Normal Speed
          *c Acceleration - -

    3. Jam Protection Function


      1. A jam protection function automatically stops the power window and moves it downward if an object gets jammed in the door window glass during up operation.

      2. The jam protection function operation differs according to the following situations:

        Situation Operation
        During auto up operation Down operation until door window glass downward movement of 125 mm (4.92 in.) is reached, or 5 seconds elapse
        During manual up operation using any power window switch other than the corresponding power window switch
        During manual up operation using the corresponding power window switch Down operation until door window glass downward movement of 30 mm (1.18 in.) is reached, or 5 seconds elapse

        Tech Tips

        After the jam protection function has operated when an auto up or manual up operation was performed, the jam protection function will not operate if the manual up operation is performed again within approximately 4 seconds.

    4. Power Window Regulator Motor


      1. The magnet and Hall IC in the power window regulator motor assembly are used in the power window jam protection function and catch protection function.

        A01MR8KC02
        *a Hall IC *b Worm Shaft
        *c Magnet - -

      2. The Hall ICs convert the changes in 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.

        A01MRADE21

      3. To control the jam protection function, the ECU determines the amount of movement and determines if the window glass is jamming based on the pulse signal A from the Hall IC; The direction of the window glass movement is determined based on the phase difference between the pulses of Hall IC signals A and B.

  2. FAIL-SAFE


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


      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.