Introduced the function of soft stop glass. When automatic power window control is enabled, this feature reduces the speed of the window when approaching the fully open or fully closed position.
Table 1.22. Purpose of the main components of the windshield washer and wiper system
The new Corolla Verso has a power window system, which includes the equipment listed in Table 1.23.
Table 1.23. Complete set of power windows
Pic. 1.54. Block diagram of the power window system
Power windows
Pic. 1.55. Power windows
The power window drive includes an ECU, two Hall sensors and an electric motor. If a signal is received from the main power window switch or the power window control switch «AUTO-UP» or «AUTO-DOWN», the ECU turns on the drive motor. Two Hall sensors are installed on the worm gear. The Hall effect sensor converts the changes in magnetic flux generated by the rotation of the worm wheel into pulse signals and sends them to the power window ECU (pic. 1.55).
Pic. 1.56. Determining the amount of movement and the moment of glass blocking by a foreign object
To control the safety function, the power window ECU determines the amount of movement and the moment the glass is blocked by a foreign object based on pulse signals from the Hall sensor IC1; the direction of movement of the glass is determined by the phase difference of the pulses coming from the Hall sensor IC1 and the Hall sensor IC2 (pic. 1.56).
Maintenance recommendation
The ECU memorizes the initial position of the respective glass. If the battery terminal, fuse or actuator connector is disconnected, data is lost, but after the connection is restored, the power window will work (both in manual and automatic mode) is being restored. Therefore, after shutting down, you should initialize the system by following the steps below.
Hold the main switch or power window control switch in the UP position.
If the switch is held in the UP position for about 1 second after the window is fully raised, the power window ECU will memorize the original position of the window.
Repeat the same procedure to memorize the initial position of the windows of the remaining doors. The test procedure has been modified in accordance with changes in the power window circuit.