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
   - System of injection of Motronic
      The major knots
      So the system of injection of Motronic functions
      Violations in work and self-diagnostics
      The self-help at injection
      Visual control
      Search of malfunctions in separate knots
      Check of idling and exhaust gases
      Check of exhaust gases (AU)
      Cable of a butterfly valve
      The help at malfunctions
   + System of injection of MPI and MPFI
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ System of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

The self-help at injection

In system of injection, unfortunately, by own efforts it is possible to make the little as deep checks assume existence of good knowledge of material and, first of all, measuring and test devices. For carrying out uncountable measurements it is necessary to have special measuring wires and test sockets not to damage contacts. Therefore at emergence of any defect it is recommended to work as follows:


  1. If Audi A4 refuses to work, in the beginning check safety locks No. 15, 28, 29, 32 and 34.
  2. Then check, whether as it should be ignition.
  3. At the following stage fuel supply is checked.
  4. Carry out a visual inspection of all knots of system of injection.
  5. If such a way the source of malfunction was not found, study the section Help at malfunctions at the end of the head and interrogate the computer, check suspicious knot according to the instruction.