Audi A4

since 1994 release

Repair and operation of the car


A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ System of an exhaust
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and channels of absorption
+ System of injection
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
- Electrotechnical equipment
   Minus is connected to weight
   The help for orientation in the electrotechnical equipment of the car
   Wires
   Connections of wires
   Central switching knot
   Support of additional relays
   Box for electronics
   Relay and control units
   Switching relay
   H-contact of the relay of unloading
   Table of the relay and control units
   Safety locks
   Table of safety locks
   + Electric circuits
   + Accumulator
   + Generator
   + Starter
+ System of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics



Minus is connected to weight

Giving of current to the consumer is carried out on a wire which can always be tracked in more or less difficult way to the accumulator as it and is visible on electric circuits in this chapter.

Feedback is provided by conducting metal details of a body or the engine. At the expense of it the bigger quantity of copper wires is saved. In certain cases, despite it, the short piece of a wire, is necessary for providing feedback when the consumer does not accommodate directly on metal. These wires connected to weight always conduct to one of so-called points of weight which are scattered on a body and on which eyes for fastening of wires are screwed.

Minus the accumulator pole, certainly, too is connected with a body - "weight" as the auto electrician will tell. Remember: "minus to weight".