System Description

POWER WINDOW CONTROL SYSTEM DESCRIPTION
1. The power window control system controls the power window operation using the power window regulator motors. The main controls of this system are the multiplex network master switch assembly, which is mounted on the driver door, and the power window regulator switch assembly, which is mounted on the front passenger door, and the rear power window regulator switch assemblies, which are mounted on the rear doors. Operating a window switch results in electrical power being transmitted to the corresponding power window regulator motor.

FUNCTION OF MAIN COMPONENTS

The power window control system consists of the following components:

Component	Outline
Multiplex Network Master Switch Assembly	Controls power window operation for all seats. When the lock switch is set to the lock position, window operation will be possible only for the driver door power window.
Power Window Regulator Switch Assembly	Located on the front passenger door. Controls front passenger window operation.
Rear Power Window Regulator Switch Assembly LH Door RH Door	Located on the rear doors. Each switch controls window operation for its respective window.
Power Window Regulator Motor Assembly	Receives switch signals and changes signals into motor activation. As a result, the window position changes. Uses the Hall-ICs in the regulator motor with the ECU to detect the window position and jamming.

SYSTEM FUNCTION

The power window control system has the following functions:

Function	Outline
Manual up-and-down function	Function that causes the window to go up while the power window switch is being pulled halfway up and to go down while it is being pushed halfway down. The window stops as soon as the switch is released.
All door auto up-and-down function	Function that enables the windows of all doors to be fully opened or closed by one full pull or push of the multiplex network master switch assembly, power window regulator switch assembly or rear power window regulator switch assembly.
Window lock function	Function that disables the power window regulator switch assembly and rear power window regulator switch assembly operation when the window lock switch is pressed. The power window regulator switch assembly and rear power window regulator switch assembly can be operated when the window lock switch is pressed again.
Jam protection function	Function that automatically stops the power window and moves it downward if a foreign object gets jammed in the door window during auto up and manual up operation.
Remote control function	Function that allows the multiplex network master switch assembly to control manual and auto up-and-down operations of the front passenger door window and rear door windows.
Key-off operation function	Function that makes it possible to operate all power windows for approximately 43 sec. after the power switch is turned off when the driver door or front passenger door has not been opened. When 43 sec. have elapsed, or the driver door or front passenger door is opened after the power switch is turned off, the key-off operation function will be disabled. HINT: 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.
Diagnosis	Function that allows diagnosis of the power window control system if any of the power window ECUs (built into each power window regulator motor assembly) detects a malfunction in the system. If a malfunction is detected, the power window ECU will illuminate the LEDs on the multiplex network master switch assembly and the respective power window regulator switch assemblies to inform the driver and passenger of the malfunction.
Fail-safe	A fail-safe function to disable a part of power window functions if the pulse sensor in the power window motor has a malfunction. Auto up-and-down function and remote control function are disabled.