POWER WINDOW CONTROL SYSTEM > SYSTEM DESCRIPTION

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POWER WINDOW CONTROL SYSTEM DESCRIPTION

  1. The power window control system controls the power window's UP/DOWN function using the regulator motors. The main components of this system are: 1) the multiplex network master switch assembly (built into the driver side door); 2) and the multiplex network switches (built into the front passenger side door, and rear doors. Pressing each door's switch transmits an UP/DOWN signal to its respective power window regulator motor. Pressing the master switch's passenger door power window switch or either rear door power window switch transmits a remote UP/DOWN signal through the BEAN line to the corresponding door ECU. Then the door ECU transmits the signal through the multiplex network switch to the door's power window regulator motor.


FUNCTION OF MAIN COMPONENT

Component
Outline
Multiplex Network Master Switch Assembly
Controls power window operation for all windows
When lock switch is set to lock position, window operation will be possible only for driver power window
Also uses two hall-ICs in the regulator motor to detect window position and jamming
Multiplex Network Switch Assembly
Located on front passenger side door and rear doors
Each switch controls window operation for its respective window
Also uses two hall-ICs in the regulator motor to detect window position and jamming
Power Window Regulator Motor Assembly
Receives switch signals and changes signals into motor activation
As a result, window position changes

SYSTEM FUNCTION

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

    Function
    		Outline
    Multiplex Network Master Switch Assembly
    		Function that raises window while multiplex network (master) switch is pulled halfway up and lowers window while switch is pushed halfway down
    Window stops as soon as switch is released
    AUTO UP/DOWN function
    		Function that enables window to be fully opened or fully closed by one full push or pull of multiplex network master switch
    Jam protection function
    		Function that automatically stops power window and moves it downward if object is jammed in power window
    During key-off operation, jam protection function works for AUTO UP and even for manual UP operation
    Remote control function
    		Function that allows multiplex network master switch to control manual and AUTO UP and DOWN operations of front passenger side window and rear windows
    Key-off operation function
    		Function that makes it possible to operate power window for approximately 43 seconds after engine switch is turned on (ACC) or off and driver side door is not opened
    Window lock function
    		Function where front passenger side power window and rear door power window's operations are disabled when window lock switch on power window master switch is pressed
    Diagnosis
    		Function where power window switch detects malfunctions in power window system and make diagnosis
    Power window switch light starts blinking 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, but remote control function is active as long as micro computer built-in multiplex network master switch operates normally
    Key-linked open and close
    		When key is within range of key detection area for driver side door, driver side door is locked, and mechanical key inserted into driver side door key cylinder is turned and maintained in lock position for 1.5 seconds or more, multiplex network master switch activates power window regulator motors to open power windows while key is turned
    Similarly, when driver side door is unlocked, turning and maintaining driver side door key in lock position for 1.5 seconds or more will cause power windows to be closed
    Wireless transmitter-linked open and close*
    		When multiplex network body ECU (cowl side junction block ECU RH) receives unlock signal from key continuously for 2.5 seconds or more, multiplex network body ECU (cowl side junction block ECU RH) transmits power window control signal to multiplex network (master) switches
    Upon receiving control signal, switches control power windows Similarly, multiplex network body ECU (cowl side junction block ECU RH) receives lock signal from key, multiplex network (master) switches control regulator motors to close power windows
    Entry lock button-linked close*
    		When certification ECU receives lock signal from lock switch on driver side door outer handle continuously for more than 3.0 seconds, certification ECU transmits power window control signal to multiplex network master switch
    Upon receiving control signal, multiplex network master switch controls power window regulator motors in accordance with signal to close power windows

    HINT:
    *: Wireless transmitter-linked close and entry lock-linked close function is not available for Australian models.