Audi 80/Avant (B4)

since 1991-1995 of release

Repair and car operation

Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ injection System
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrosystem
+ ignition System
+ Lighting
- Signaling devices
   Verification of indexes of turn and alarm light system
   Stoplight check
   Stoplight switch
   List of malfunctions
   Check of a sound signal
   Short-term signal driving beam
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Check of a sound signal

By pressing a horn contact to "weight" (case) is provided by contacts in a steering wheel (3) and in a payment of a sound signal (1). Further the way passes through shtekerny connection (2).

On an illustration horns (1 and 2) are visible at the removed bumper.

Continuous check

By pressing a horn located in a steering wheel, at the included ignition should work a usual or two-tone sound signal. The button of a sound signal closes on "weight" (case) an electric chain of the relay of a sound signal (head Devices and auxiliary devices). Food giving to the relay goes from the plug X receiving tension only at included ignition.

At the closed electric chain (that is at the pressed horn) contacts of the relay become isolated, and to a sound signal a food on a wire with a black and yellow cover arrives. Conducting to "weight" for a sound signal goes on a brown wire.

Faulty sound signal?


  1. To remove the bottom protection of a motor compartment (head body Elements).
  2. To disconnect tips of wires.
  3. To remove the corresponding horn.
  4. To connect to each shtekerny socket on an auxiliary wire and to connect it to positive and negative plugs of the accumulator.
  5. If it is audible nothing, means, this horn is faulty.
  6. Sometimes it is possible to adjust or return rattling or absolutely "mute" horn to life rotation of the adjusting screw located on its reverse side.
  7. To clear the screw of filling mastic.
  8. After adjustment again загерметизировать the screw hermetic for a body.
  9. The same method of check should be applied and at a two-tone sound signal.