Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car



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
+ System of injection
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signaling devices
- Devices and auxiliary devices
   Check of indicators and signaling devices
   Elements of a combination of devices
   Speedometer
   Tachometer
   Hours
   Indicator of amount of fuel
   Indicator of temperature of cooling liquid
   Voltage stabilizer
   Additional devices
   The top indicators in a combination of devices
   Indicator of cooling liquid
   Indicator of the brake system
   Oil pressure indicator
   Indicators of indexes of turns
   Lower indicators
   Indicator of a charge of the rechargeable battery
   Indicator of indexes of turn of the trailer
   Safety cushion indicator
   Indicator of anti-blocking system
   Indicator of driving beam
   Indicator of the parking brake
   System of self-examination
   Switches
   Ignition lock
   Check of switches
   Buzzer of shutdown of lighting and radio
   Lighter
   Heating of back glass
   Check of screen wipers and windscreen washers
   Screen wiper engine
   List of malfunctions
   Screen wiper of back glass
   List of malfunctions
   Replenishment of a washer reservoir of glasses
   System of washing of headlights
   Audio system
   Antenna of back glass
   Electric regulation of external rear-view mirrors
   System of locks with the central management
   Power windows
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications





System of locks with the central management

Elements of hoses of system of locks with the central management and their passing

1 – locking element of a door of the forward passenger;
2 – locking element of a back right door;
3 – locking element of a cover of the fuel tank;
4 – locking element of a cover of a luggage compartment;

5 – pump;
6 – locking element of a back left door;
7 – locking element of a driver's door;
8 – one of vacuum pipelines.


On an illustration are shown a locking element (1) of system of locks with the central management in a driver's door with the connecting plug (3) and a delivery and vacuum hose (4). Besides the driving cable of unblocking of doors (2) and the directing tire of a window regulator are represented (5).


The pump (1) of system of locks with the central management is located at sedans and station wagons under the right covering of a luggage carrier or a luggage compartment. On an illustration it is represented removed and lying on the bottom of a luggage compartment, the plug of the wires conducting to locking elements (3) is already exempted from the cover (2) (that contacts opened). The plug of giving of food to the pump (4) remained established.

All doors, and also trunk lid and the fuel tank can be locked or unlocked by turn of a key of a driver's door, either door of the forward passenger, or trunk lid. A basic element of system is the pump given by the electric motor. At turn of a key in the direction "Openly" the pump creates the elevated pressure because of what various elements of switching deblock the corresponding lock. On the contrary, when locking the lowered pressure is created, and elements of switching block the lock.

 Hint: feature of the lock of a trunk lid: in vertical position of a key the luggage carrier is always locked – irrespective of system of locks. Thus theft of baggage is prevented, for example, at a stop at the traffic light. In horizontal position the lock of a trunk lid reacts together with all system of locks with the central management.

Check of system of locks with the central management

To unlock, and then to lock doors of the driver, the forward passenger and a trunk lid.

 PERFORMANCE ORDER

  1. The system of locks with the central management has to be activated in all three doors.
  2. Later about 2 with all locks have to be locked.
  3. If the pump works longer 5 with, it means that the system is untight – in this case the pump has to work no more than 35 with, then it has to be switched-off.

 Hint: if the system of locks with the central management glitched, it is possible to unlock and lock doors and a trunk lid usually. It is also possible to block door buttons.

Search of malfunctions electricians

If the pump does not work at a turn with a key in a driver's door, neither at doors of the forward passenger, nor in a door of a luggage compartment:

 PERFORMANCE ORDER

  1. To check a safety lock (the head the Body electrical system).
  2. To remove a covering in a luggage compartment behind on the right.
  3. To disconnect the multicontact plug from the pump.
  4. To remove a cover of the multicontact plug.
  5. To check a locking element of a driver's door: to connect a control lamp in the plug between contact of a green-blue wire and "mass" (case) of a body.
  6. The control lamp has to burn constantly if the driver's door is opened by a key. In this case the opening contact of a locking element as it should be.
  7. If the bulb does not light up, so the opening contact of a driver's door is faulty or the electric chain is interrupted.
  8. Now to switch a control lamp: the wire which went to "weight" should be thrown on the positive plug of the rechargeable battery. Other contact remains in the plug (contact of a green-blue wire).
  9. To lock a driver's door a key.
  10. If the control lamp burns constantly, so the closing contact of a locking element as it should be now.
  11. If the lamp does not light up, but wires are whole — it means that the locking element is faulty.
  12. To check a locking element of a door of the forward passenger: to connect a control lamp in the removed pump plug between contact of a yellow-blue wire and "mass" (case) of a body.
  13. The control lamp has to burn constantly if the door of the forward passenger is opened by a key. In this case the opening contact of a locking element as it should be.
  14. If the lamp does not light up, so the opening contact of a door of the forward passenger is faulty or the electric chain is interrupted.
  15. Now to switch a control lamp: the wire which went to "weight" should be thrown on a positive conclusion of the rechargeable battery. Other contact remains in the plug (contact of a yellow-blue wire).
  16. To lock a door of the forward passenger a key.
  17. If the control lamp burns constantly, so the closing contact of a locking element as it should be now.
  18. If the lamp does not light up and wires are whole, it means that the locking element is faulty.
  19. To check a locking element of a trunk lid: to connect a control lamp in the removed pump plug between contact of a brown-green wire and a positive conclusion of the accumulator.
  20. The control lamp has to burn constantly if the trunk lid is opened by a key. In this case the opening contact of a locking element as it should be.
  21. If the bulb does not light up, so the opening contact of a trunk lid is faulty or the electric chain is interrupted.
  22. Now to switch a control lamp: the wire which went to contact of a brown-green wire should be thrown on a brown-white wire. Other contact remains connected to a positive conclusion of the accumulator.
  23. To lock a cover of a luggage compartment a key.
  24. If the control lamp burns constantly, so far the key is in the locking situation, so the closing contact of a locking element as it should be.
  25. If the lamp does not light up and wires are whole, it means that the locking element is faulty.
  26. Check of the pump: if the control of the pump by means of locking elements is provided (see the description in the previous paragraphs), then, therefore, only giving of food (through thin black-blue and thick red-black wires) or indistinct connection on "weight" (case) (a thick brown wire) is a cause of defect.
  27. If the rest as it should be, so the pump is faulty. To replace.

Search of malfunctions of pneumatics

For check of untight system of locks with the central management (a sign: too long operation of the pump) it is necessary to check system step by step: arrangement of elements and hoses.

 PERFORMANCE ORDER

  1. Pump: to squeeze flat-nose pliers a hose directly near the compressor, thereby having hermetically closed it. To open and close one of locks.
  2. If the pump works at inclusion of system of locks with the central management longer 3, at most 7 with, so the pump is untight. To replace.
  3. Locking elements of doors and luggage carrier: in turn to clamp all pipelines directly near locking elements. For this purpose to remove the corresponding coverings (the head Elementy of a body). Every time to use one of locks.
  4. The pump should not work at the drive of system of locks with the central management longer than 3, at most 7 pages.
  5. After compression of a defective (untight) tube the pump works normally – that is less than 3 pages. To replace a faulty detail.







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