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System Description

  1. POWER WINDOW CONTROL SYSTEM DESCRIPTION 
    • The power window control system controls the power window UP/DOWN function using the power window regulator motors. The main controls of this system are the multiplex network master switch which is built into the driver side door, and the power window regulator switches which are built into the front passenger side door and rear doors.
    • Pressing either of the power window switches on the power window regulator switches or either of the power window switches on the multiplex network master switch transmits an UP/DOWN signal to the corresponding power window regulator motor assembly.
    • An ECU is built into the power window regulator motor assembly.
  2. FUNCTION OF MAIN COMPONENT 

    The power window control system consists of the following components:

    FUNCTION OF MAIN COMPONENT TABLE

    Component Outline
    Multiplex Network Master Switch Assembly
    • Controls power window operation for all windows
    • When window lock switch is set to lock position, window operation will only be possible with driver switch
    Power Window Regulator Switch Assembly
    • Located on front passenger side door and rear doors
    • Each power window regulator switch controls window operations for its respective window
    Power Window Regulator Motor Assembly
    • Receives power window regulator switch signals and changes signals into motor activation to change window position
    • Uses Hall-IC in regulator motor with ECU to detect window position and jamming
  3. SYSTEM FUNCTION 

    The power window control system has the following functions:

    FUNCTION TABLE

    Function Outline
    Manual UP / DOWN function Function that raises window while power window regulator switch is pulled halfway up, and lowers window while pushed halfway down (window stops as soon as power window regulator switch is released)
    AUTO UP / DOWN function (ALL AUTO) Function that enables window to be fully opened or closed by one full push or pull of power window regulator switch
    Remote UP / DOWN function Function that allows master switch to control front passenger side power window and rear power windows
    Key-off operation function
    • Function that makes it possible to operate all power windows for approximately 45 seconds after engine switch is turned off when driver side door or front passenger side door has not been opened
    • If 45 seconds have passed or a front door is opened while the AUTO function is operating, window operation stops
    Window lock function
    • Function where front passenger side power window switch and rear power window switch operations are disabled when window lock switch is pressed
    • Front passenger side power window switch and rear power window switch can be operated when window lock switch is pressed again
    Jam protection function
    • Function that automatically stops power window and moves it downward if object is jammed in power window
    • Jam protection function works for AUTO UP and manual UP operation
    Key-linked open and close When key is not inside vehicle, driver side door key is locked, and key inserted into driver side door key cylinder is turned and maintained in lock position for 2.3 seconds or more, main body ECU activate power window regulator motors to close power windows while key is turned. Similarly, when driver side door is unlocked, turning and maintaining driver side door key in unlock position for 2.3 seconds or more will cause power windows to open.
    Wireless transmitter-linked open When certification ECU receives UNLOCK signal from door control transmitter for 3 seconds or more, main body ECU sends operation permission signal to ECU in power window regulator motor ECU that receives signal controls power window regulator motor to open power windows.
    Entry lock switch-linked close When door ECU receives LOCK signal from lock switch on door outside handle for 3 seconds or more, main body ECU sends operation permission signal to ECU in power window regulator motor. ECU that receives signal controls power window regulator motor to close power windows.
    Diagnosis
    • ECU in power window regulator motor detects malfunctions in power window system and makes diagnosis
    • Power window regulator switch light blinks to inform driver of malfunction
    Fail-safe If pulse sensor(s) (Hall IC(s)) in power window regulator motor malfunctions, power window AUTO UP and DOWN function is disabled
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