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
+ System of ignition
+ 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



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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 lower facing of a motive compartment.

Constant control

If ignition is included, when pressing a horn plate in a steering wheel, the double sound signal has to 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 (the head the Electrotechnical equipment). Giving of current to the relay is carried out from the ignition lock plug 75 which gives 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 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?

 PERFORMANCE ORDER

  1. Dismantle the lower facing of a motive compartment (the head Detali of a body).
  2. Disconnect the wire socket.
  3. Dismantle the corresponding horn of a sound signal.
  4. Connect an auxiliary wire to each shtekerny socket of a horn of a sound signal and connect them to plus and minus of the accumulator.
  5. If it does not sound, this horn is faulty.
  6. The gnashing or silent horn of a sound signal can be corrected or returned to life by rotation of the adjusting screw on a reverse side of a horn.
  7. Bare the screw under filling weight.
  8. After adjustment again hermetically close the screw filling weight.