10.1. Features of a design

Electric equipment of the car is executed according to the single-wire scheme: negative conclusions of sources and consumers of the electric power are connected to "weight". Function of the second wire is performed by a car body. Electric chains of a control system of the engine are executed according to the multiwire scheme and connected to "mass" of the car only through an electronic control unit. Schemes of electric equipment are submitted at the end of the book.
For switching of the main chains of the car the combined switch (lock) of ignition consisting of a contact part and the mechanical anti-theft device with the lock serves. Switches of external lighting and fog light, the switch of operating modes of the electric fan of a heater are located on the console under the dashboard.
Switches of headlights, indexes of turn, screen wiper and windscreen washer are united in the block of understeering switches. Electroconsumers of big power join via electromagnetic relays.

You carry out any works with electric equipment of the car only at the switched-off rechargeable battery.
It is possible to disconnect or connect the rechargeable battery only at the switched-off ignition.
When checking chains of electric equipment it is forbidden to close on "mass" of a wire (to check serviceability of chains "for a spark") as it can lead to failure of elements of electric equipment.
It is forbidden to apply the safety locks which are not provided by a design of the car or calculated on bigger current, and a wire instead of safety locks.
When replacing safety locks it is forbidden to use screw-drivers and metal tools as it can lead to short circuit in electric equipment chains.
It is forbidden to disconnect the rechargeable battery at the working engine in order to avoid failure of the regulator of tension and elements of the electronic equipment of the car.
That diodes of the vypryamitelny block did not fail, it is forbidden to check on the car them the megohm meter or the control lamp fed more than 12 V without detachment of wires from the generator.
It is necessary to check resistance of isolation of a winding of the stator of the generator the increased tension on the generator removed from the car at the stator winding conclusions disconnected from the vypryamitelny block.
When carrying out electrowelding works on the car it is necessary to disconnect wires from plugs of the rechargeable battery and conclusions of the generator and the controller.
Do not concern elements of system of ignition and high-voltage wires on the working engine.
Do not lay a wire of low voltage in one plait with high-voltage.
Regularly clear of oxides and dirt of the plug of the rechargeable battery and tips of wires.
At recharge of the rechargeable battery by means of the charger disconnect car electric equipment wires from battery plugs.