Audi A4

since 1994 release

Manual of the car

Audi A4
+ 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
   What provides ignition
   When there is an ignition of fuel-air mix?
   Different systems of ignition
   So there is an ignition spark
   Executive body
   System brain
   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 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


Check of the moment of ignition

In systems of ignition Audi without distributor it is impossible to regulate the ignition moment. At distributive ignition with the engine of 74 kW adjustment of ignition is checked by a workshop within technical inspection. For this purpose, first of all, the computer is interviewed. Then the control unit of ignition/injection is given to a basic position. It also becomes by means of the device for reading of the computer.

Most it does not make sense to correct installation of ignition if in the beginning there was no schitan information in the computer. As our self-training control units, they can carry out the corresponding adjustment of ignition if, for example, one signal of the sensor dropped out. Before something is changed in installation of ignition, it is necessary to be convinced in the beginning that any defect in system did not distort installation of ignition.

The same treats so-called main installation by means of the device for reading of the V.A.G 1551 computer. Until the control unit is brought to a state of the main installation, correct adjustment cannot be carried out. Therefore the most suitable partner in this work is the workshop Audi. The workshop makes check in the following parameters: control size: 0–12 °; adjusting size 0±3 °.