Power Window Control System System Description

  1. POWER WINDOW CONTROL SYSTEM DESCRIPTION

  1. FUNCTION OF MAIN COMPONENTS

  1. SYSTEM FUNCTION

Power Window Control System -- 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 (mounted on the driver door), power window regulator switch assembly (mounted on the front passenger door) and rear power window regulator switch assemblies* (mounted on the rear doors). Operating a window switch results in electrical power being transmitted to the corresponding power window regulator motor.

    1. *: for 5 Door

FUNCTION OF MAIN COMPONENTS
The power window control system consists of the following components:

Component
Outline
Multiplex network master switch assembly
  1. Controls power window operation for all windows.
  2. When lock switch is set to lock position, window operation will be possible only for driver side power window.
Power window regulator switch assembly
  1. Located on front passenger door.
  2. Controls front passenger window operation.
  1. Rear power window regulator switch assembly (for Rear RH Door)*
  2. Rear power window regulator switch assembly (for Rear LH Door)*
  1. Located on rear doors*.
  2. Each switch controls window operation for its respective window*.
  1. Front power window regulator motor assembly RH
  2. Front power window regulator motor assembly LH
  3. Rear power window regulator motor assembly LH*
  4. Rear power window regulator motor assembly RH*
  1. Receives switch signals and changes signals into motor activation. As a result, window position changes.
  2. Uses Hall-IC in regulator motor with ECU to detect window position and jamming.
  1. *: for 5 Door

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.
Auto up and down function
Function that enables the window of each door 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*1.
Window lock function
  1. Function that disables the power window regulator switch assembly and rear power window regulator switch assembly*1 operations when the window lock switch is pressed.
  2. Function that disables multiplex network master switch assembly (remote function) operation when the window lock switch is pressed.
  3. The power window regulator switch assemblies 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 or manual up operation.
Catch protection function
Function that automatically stops the power window if a foreign object gets caught in the door window during auto down or manual down 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*1.
Key-off operation function
  1. Function that makes it possible to operate all power windows for approximately 43 seconds after the ignition switch is turned off when the driver door or front passenger door has not been opened.
  2. When approximately 43 seconds have elapsed, or the driver door or front passenger door is opened after the ignition switch is turned off, the key-off operation function will be disabled.
HINT:
  1. If the window lock switch is off, the windows can be operated using any of the power window regulator switches. If the window lock switch is on, only the multiplex network master switch can be used to operate the windows (remote operation remains possible).
  2. Even 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 continue operating.
Key-linked open and close function*2
  1. When the key is not inside the vehicle, the driver door is locked, and the key inserted into the driver door key cylinder 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 regulator motor assemblies to close all power windows while the key is being turned.
  2. Similarly, when the driver door is unlocked, turning and maintaining the driver door key in the unlock position for 1.5 seconds or more will cause all power windows to open.
Wireless transmitter-linked open and close function*2
  1. When the certification ECU (smart key ECU assembly) receives an unlock signal from the electrical key transmitter for 3 seconds or more, the main body ECU (multiplex network body ECU) sends an operation request, signal to the power window ECU in each power window regulator motor assembly. As a result the power window regulator motors open all power windows.
  2. When the certification ECU (smart key ECU assembly) receives a lock signal from the electrical key transmitter for 3 seconds or more, the main body ECU (multiplex network body ECU) sends an operation request signal to the power window ECU in each power window regulator motor assembly. As a result, the power window regulator motors close all power windows.
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.
Fail-safe
  1. Function to disable part of the power window control system functions if the pulse sensor in the power window regulator motor has a malfunction.
  2. Auto up and down function and remote control function are disabled.
  1. *1: for 5 Door
  2. *2: This function is set through the customize function, as it is off by default (LandCruiser RM000005CF7003X.html).