Toyota 4Runner: System Description

• Controls power window operation for all windows (except back door power window).

• Located on the front passenger side door and rear doors.
• Each power window regulator switch controls power window operations for its respective window.

• Receives power window regulator switch signals and activates the motor to change the window position.
• Uses the Hall IC in the regulator motor to detect the window position and jamming.

• Receives multiplex network door ECU signals and activates the motor to change the window position.
• Uses the Hall IC in the regulator motor to detect the window position and jamming.

• Function that disables power window regulator switch operation when the window lock switch is pressed.
• The power window regulator switch can be operated when the window lock switch is pressed again.

• Function that automatically stops a power window and moves it downward if an object is jammed in the power window.
• The jam protection function works for the auto up and manual up operations.

HINT:

• If the window lock switch is off, the windows can be operated using any of the power window regulator switch assemblies.
• If the driver side door or front passenger side door is opened during automatic window operation while the key-off operation function is on, the window will stop operating.

• Pressing the unlock switch on the back door control switch for approximately 0.7 second or more causes the back door window to open while sounding wireless buzzer.
• Pressing the lock switch on the back door control switch for approximately 0.7 second or more causes the back door window to close while sounding wireless buzzer.

• When the key is not inside the vehicle and the driver side door is locked, turning and maintaining the driver side door key cylinder in the lock position for 1.5 seconds or more causes the main body ECU to activate the power window regulator motors to close all the power windows while the key is turned.
• Similarly, when the driver side door is unlocked, turning and maintaining the driver side door key cylinder in the unlock position for 1.5 seconds or more will cause all power windows to open.
• When the key is not inside the vehicle the back door is locked, and the key inserted into the back door key cylinder is turned and maintained in the lock position for 1.5 seconds or more, the multiplex door ECU (back door P/W) activate the back power window regulator motor assembly to close the back power windows while the key is turned.

• When the certification ECU 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 (except back door power window).

• Function where the ECU in the door window regulator detects malfunctions in the power window system and makes a diagnosis.
• The power window switch light blinks to inform the driver of the malfunction.