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




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Table of the relay and control units

Ahead under the average console (here it is dismantled) there is a control unit of a safety cushion (shooter) with a blow sensor.

Assembly position of additional control units:

At the left: the control unit (shooter) of heating of the door lock is in the driver's door.

On the right: the control unit (shooter) of system of anti-blocking is installed under a back seat.

In the central switching knot

Nest
Designation
1
 H-contact of the relay of unloading
2
Relay of a sound signal
3
Relay of system of cleaning of headlights
4
Relay of an automatic transmission and crossing point of a mechanical transmission
5
Relay of system of washing/clarification of glasses
6
Relay of the fuel pump

On a 8-seater support of additional relays

Nest
Designation
1
 The relay of switching off of a fog lamp (in the presence of coupling with the trailer)
2
Relay of the electric fan of a radiator (full capacity)
3
Relay of the electric fan of a radiator (1st step)
4
The control unit of window regulators with the electric drive

The control unit of window regulators with the electric drive

Nest
Designation
3
The relay of electromagnetic coupling (in climatic installation)
4 + 5
Control control unit of lamps (automatic control)
10
Relay of fog lights
11 + 12
Control unit of an otkidyvaniye of a mirror of the external review