Audi 80/Avant (B4)

Audi 80/Avant
The description
System of release of the fulfilled gases
Cooling system
Fuel tank and the fuel pump
The air filter and intake channels
Injection system
Transmission and transmission
Suspension bracket and steering
Brake system
Antiblocking system of brakes
Wheels and tyres
- body electrosystem
   Minus to "weight"
   Orientation in electrosystem
   Plug connections
   The central switchboard
   The additional block of the relay
   The relay and management blocks
   The unloading relay of contact Х
   Safety locks
   The table of safety locks
   Electric schemes
    The full electroscheme of car Audi 80: the 2-litre 4-cylinder engine (66 kw)
    The 2-litre 4-cylinder engine (85 kw)
    The 2,3-litre 5-cylinder engine (98 kw)
    The 2,6-litre 6-cylinder engine (110кВт)
    Additional equipment
    The storage battery
    The generator
   Condition check wedge or wedge a belt
   Tension wedge a belt
   Tension wedge or semi wedge a belt
   Torn wedge a belt
   Overheat of the engine because of damage wedge a belt
   The review wedge and semi wedge belts
   Replacement wedge a belt
   The list of malfunctions
   The list of malfunctions
Ignition system
Signalling devices
Devices and auxiliary devices
Heating and ventilation
Body elements
Search of malfunctions

Safety locks

In the car the certain established quantity of a current is necessary for each electric device. According to this current the cross-section section of the leader to the wire device is defined also.

If in this electric chain the current, for example, because of occurrence of additional consumers or because of short circuit this wire is overloaded raises. Thus it can heat up slightly or even to start to be heated, if in due time not to interrupt current receipt. It is done also by safety locks. As it has already been noted, that car Audi at defect in an electrochain has not appeared completely without a food, safety locks are distributed in various electrochains. However connections between the accumulator, the generator, a starter and the ignition lock are not protected by safety locks.

Replacement of safety locks


  1. If it is necessary to replace one of safety locks, you can use the small plastic nippers strengthened on a cover of the central switching centre for a detachment.
  2. If the new safety lock again fuses at once, it is necessary to check up, whether too weak safety lock has been established.
  3. If the safety lock has been picked up truly, it is necessary to reveal on the basis of the table of safety locks the connected consumers of a current and to check up each of them separately. Thus the corresponding electroscheme also will help.
  4. In a doubtful case it is necessary to disconnect all consumers and to connect them one after another on the single. The consumer at which connection the safety lock fuses, is faulty.

Additional safety locks

On certain versions with the additional equipment on the additional block of the central switchboard additional safety locks are located. These are what in the table of safety locks are specified at numbers 23 – 28.

Number 22 is necessary on cars with the diesel engine. As on this panel at some versions safety locks for ignition and injection system are located. The red cover with an inscription Motor-Moteur serves thus as protection.