Door locking system for motor vehicle with central control unit - has at least one adjusting element which is arranged in or in vicinity of door or flap of vehicle and with electrical switch as part of adjusting element

摘要

The electrical switch (S) can be changed over between the supply voltage (+) and earth potential. An electrical connecting lead (3) is provided between the adjusting element (2) and the control unit (1) for communicating the switch setting to the control unit. The adjusting element (1) has an electrical controllable adjusting member (4), which is connected in series with the switch (S) and the control unit (1). The control unit has electrical transistor switches (T1, T2), for connecting the connecting lead (3) with the supply voltage (+) or with the earth potential. ADVANTAGE - Two functions are controlled without need to increase number of connecting leads compared to control of one function.