13.29. Distributes strong working currents – the switching relay
In Mondeo there is a group of consumers which in comparison with others demand for itself a strong working current. That there, at probably smaller section of a wire to guarantee the maximum safety, Ford operates such consumers from central «an electric case» by means of the separate switching relay. Through the switch the weak switched current flows here to spend to the relay switching of a working current to the consumer.
Different problems – a switched current and a working current
At inclusion of the corresponding consumer the switching current in the switching relay operates on the electromagnetic coil. The coil draws effort of a spring strong contact and closes thus a chain of a working current to the consumer. That the consumer has received as much as possible pressure, the working current arrives to it directly on a direct way through the relay. Relay contacts are reliable enough long to "suffer" strong currents. Besides, prospective "detour" through the relay reduces a way of a working current. Advantage: the more shortly "road" for a current, the is less than pressure loss between the switch and the consumer.
Different problems – special types of the relay carry out
For improvement of visibility and search of malfunctions the majority of the relay in Mondeo are grouped on special motionless plates. In addition in an onboard network other types of the relay which, near to the workplace, execute certain functions "work" also. The relay of indexes of turn, screen wipers and a preliminary warming up, for example, concern them in diesel Mondeo.