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 from LIN to front passenger's power window switch, and to the moonroof motor-control unit *.
*: With moonroof
Front Passenger's Power Window Switch
The front passenger's power window switch has a built-in control unit. Control is performed by receiving signals from the power window master switch via LIN.
Power Window Motors
The motor includes the pulse sensors that detect 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.