Audi A4, S4

since 2000 release

Repair and operation of the car


Audi A4, S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
+ Cooling systems, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
- Systems of electric equipment of the engine
   + System of ignition and engine management
   + System of preheat of the diesel engine
   - Diagnostics of systems of electronic control and diagnostic equipment
      General information
      Diagnostics of electronic control systems of the engine, injection, ignition and auxiliary brake systems
      The controler of interface of the personal computer to onboard system of self-diagnostics of OBD II under protocols of the SAE standards (PWM and VPW) and ISO 9141-2
      Application of an oscillograph for supervision of signals in chains of control systems
   + Systems of charging and start
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Diagnostics of electronic control systems of the engine, injection, ignition and auxiliary brake systems

The socket arrangement for connection of the diagnostic equipment is given on an illustration below. Interpretation of codes is given in Specifications.

Purpose of contacts of the 16-contact diagnostic socket - see the scheme Diagnostic I will corrode DLC.

Arrangement of the 16-contact diagnostic socket

16-contact diagnostic socket of system of onboard diagnostics of OBD II