Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
- Alarm equipment
   Check of system of indexes of turns and alarm system
   Check of fires of stoplights
   The help at malfunctions
   Check of a horn of a sound signal
   Light signal
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Check of a horn of a sound signal

Both horns of a sound signal (1 and 2) are established on the right ahead behind a bumper. They become available after dismantle of the bottom facing of an impellent compartment.

Continuous control

If ignition is included, by pressing a horn plate in a steering wheel, the double sound signal should sound. Contact of a horn creates connection with weight in an electric chain of management of the relay of a horn of a sound signal (head the Electrotechnical equipment). Current giving to the relay is carried out from the plug 75 of the lock of ignition which submits power supply only at the included ignition. In the closed electric chain (i.e. at the pressed plate of a horn of a sound signal) contacts of the relay become isolated, and on horns of a sound signal the current on a wire in a black/yellow cover moves. Connection with weight is carried out on a brown wire.

The horn of a sound signal is faulty?


    Dismantle the bottom facing of an impellent compartment (head of the Detail of a body). Disconnect the wire socket. Dismantle the corresponding horn of a sound signal. Connect to each shtekerny socket of a horn of a sound signal an auxiliary wire and connect them to plus and an accumulator minus. If it does not sound, this horn is faulty. It is possible to correct or return a gnashing or silent horn of a sound signal to life by rotation of the adjusting screw on a reverse side of a horn. Bare the screw under filling weight. After adjustment again tightly close the screw in filling weight.