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
   That provides ignition
   When there is an ignition of fuel and air mix?
   Different systems of ignition
   So there is an ignition spark
   Executive body
   Brain of system
   The signals coming to the control unit
   Adjustment of a detonation
   Be careful in the address with ignition
   Works on system of ignition
   Search of malfunctions in ignition
   Ignition distributor
   Knot of a high voltage
   Replacement of spark plugs
   Right choice of spark plugs
   Check of the moment of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

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Be careful in the address with ignition

In the motive compartment Audi A4 the sticker warns about the high tension of system of ignition, and it not without justification: even in a thin wire to the coil of ignition there can be tension to 100 V with a big current, not to mention tension of ignition which over 30 000 V (happen at insignificant current) the extremely dangerous. Therefore:


  1. Touch all electric wires, and also connections of control devices, only at the switched-off ignition, it also belongs to their connection and shutdown.
  2. Switch-off the accumulator only at the switched-off ignition.
  3. If the engine needs to be turned a starter, without bringing him, ignition has to be disconnected (see the following section).
  4. When washing the engine ignition also has to be switched off.
  5. To start the engine at the discharged accumulator by means of the device of the accelerated charging, it has to be connected at most within one minute, and tension should not exceed 16,5 Century.
  6. If in system of ignition defect exists or is supposed, switch off ignition at towage of the car (see the following section).
  7. Do not connect the condenser to the plug of 1 coil of ignition.
  8. Do not change the runner of the distributor of ignition of the engine of 74 kW on any other, and use only an original detail with the necessary resistance. The same belongs to wires of ignition and sockets of candles of all engines.