Toyota Venza: System Description

Toyota Venza Service Manual / Window / Glass / Power Window Control System / System Description

SYSTEM DESCRIPTION

1. POWER WINDOW CONTROL SYSTEM DESCRIPTION

(a) The power window control system controls the power window operation using the power window regulator motors. The main controls of this system are the power window regulator master switch assembly, which is mounted on the driver side door, and the power window regulator switches, which are mounted on the front passenger side door and rear doors. Operating a window switch results in electrical power being transmitted to the corresponding power window regulator motor.

2. FUNCTION OF MAIN COMPONENTS

The power window control system consists of the following components:

Component	Outline
Power Window Regulator Master Switch Assembly	Controls power window operation for all seats. When lock switch is set to lock position, window operation will be possible only for driver side power window.
Power Window Regulator Switch Assembly Front Passenger Side Rear LH Side Rear RH Side	Located on front passenger side door and 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, window position changes. 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	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 pushed halfway down. The window stops as soon as the switch is released.
All door auto up-and-down function	Function that enables windows of all doors to be fully opened or closed by one full pull or push of the power window regulator master switch assembly or power window regulator switch assembly.
Window lock function	Function that disables power window regulator switch assembly (for Front passenger side, rear LH side and rear RH side) operations when the window lock switch is pressed. The power window regulator switch assemblies (for Front passenger side, rear LH side and rear RH side) can be operated when the window lock switch is pressed again.
Jam protection function	Function that automatically stops power window and moves it downward if a foreign object gets jammed in door window during auto up and manual up operation.
Remote control function	Function that allows the power window regulator 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 45 sec. after the ignition switch is turned off when the driver side door or front passenger side door has not been opened. If 45 sec. have passed or a front door is opened while the auto function is operating, the window operation stops.
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) detect a malfunction in the system.
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.

How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the power window control system. *: Use the Techstream. PROCEDURE 1. VEHICLE ...

Operation Check

OPERATION CHECK 1. CHECK WINDOW LOCK SWITCH HINT: Before performing the window lock switch operation check, make sure that the window lock switch is off (the switch is not pushed in). (a) Chec ...

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Data List / Active Test
DATA LIST / ACTIVE TEST 1. READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very usefu ...