Audi A4

Since 1994 of release

Repair and car operation


Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
- The electrotechnical equipment
   The minus is connected to weight
   The help for orientation in the electrotechnical equipment of the car
   Wires
   Connections of wires
   The central switching knot
   Support of additional relays
   Box for electronics
   The relay and management blocks
   The switching relay
   H-contact of the relay of unloading
   The table of the relay and management blocks
   Safety locks
   The table of safety locks
   + Electric schemes
   + The accumulator
   + The generator
   + Starter
+ Ignition system
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics









Support of additional relays

For the relay and blocks of management which do not take places in the central switching knot, in Audi A4 also under a control panel so-called support of additional relays are established:

  • The 13-seater support of additional relays takes places over the central switching knot.
  • The 8-seater support of additional relays is in certain degree at the second level ahead under the central switching knot and a 13-seater support of additional relays. Except numerous relays and management blocks, various thermosafety locks here take places.

Placing of nests of "a 13-seater support of additional relays. What knots there are connected, is explained in the table.

At the left: the 8-seater support of additional relays (arrow) settles down under the central switching knot, and on it along with the relay (1) also various thermosafety locks (2) in addition take places.

On the right: placing of nests of "a 8-seater support of additional relays.