Power Windows System Description - Components
Power Window Master Switch
The power window master switch has a built-in B-CAN transceiver and a LIN transceiver. The power window master switch sends signals to the front passenger's power window switch, the rear power window switches, and the moonroof motor-control unit via the LIN.
Front Passenger's Power Window Switch
The front passenger's power window switch has a built-in control unit. Control is performed by received signals from the power window master switch via the LIN.
Power Window Motors
The power window motor with AUTO UP/DOWN function includes the pulse sensors that detect the window's position and direction with the motor rotation. The rotating direction (up/down) is detected with the rotating cycles from the 2 pulse sensors and the moving amount (window position) is also detected by considering 4 pulses as one rotation pulse.