Audi A3

since 1997 of release

Repair and car operation



Audi A3
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ the Power supply system and production of the fulfilled gases
- Engine electric equipment
   - System of electronic control by ignition and injection
      Self-diagnostics of systems of electronic control of the second generation of OBD II
      Ignition system
      Checks of system of ignition and injection
      Spark plugs
   + charge and start Systems
+ Manual box of gear shifting
+ Automatic transmission and models with a full drive
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Elektroskhema







System of electronic control by ignition and injection

GENERAL INFORMATION

View of a compartment of the petrol engine of 1.6 l and the list of elements of a control system (on an illustration are shown not all)

1-The sensor of provision of a cam-shaft – CMP
2-Д / the switch of a closed position of a butterfly valve – CTP
3-Д / the switch of a pedal of coupling – CPP
4-The sensor of position of the crankshaft – CKP/sensor of turns of the engine – RPM
5-I will corrode lines of data – DLC – the central console
6-The control unit the engine – ECM
7-The sensor of temperature of cooling liquid – ECT
8-The valve of a purge of an adsorber – EVAP
9-The fuel filter – outside of a tank
10-Regulator of pressure of fuel
11-The fuel pump built in a tank
12-The relay of the fuel pump – a box of the relay of the forward panel, a position 4
13-Warmed up? – a probe – HO2S – dokataliticheskiya
14-Activator of management of turns х.х. – ISC
15-Sensor of position of the activator of management of turns х.х. – ISC
16-Amplifier of ignition
17-Ignition coil
18-Injectors
19-The sensor of temperature of soaked-up air – IAT, to 98 g.
20-The sensor of temperature of soaked-up air – IAT, after 98 g.
21-Э / magnet of management of air of the inlet pipeline
22-Detonation sensor
23-H measuring instrument · m ссы air – MAF
24-Д / the pressure switch in system of hydrostrengthening of a wheel – PSP
25-Knot of management of a butterfly valve
26-The sensor of provision of a butterfly valve – TP
27-The sensor of speed of the car – VSS – on transmission

View of a compartment of the petrol engine of 1.8 l without a turbo-supercharging and the list of elements of a control system (on an illustration are shown not all)

1-The sensor of provision of a cam-shaft – CMP
2-Activator of provision of a cam-shaft
3-Д / the switch of a closed position of a butterfly valve – CTP
4-Д / the switch of a pedal of coupling – CPP
5-The sensor of position of the crankshaft – CKP/sensor of turns of the engine – RPM
6-I will corrode lines of data – DLC – the central console
7-The control unit the engine – ECM
8-The sensor of temperature of cooling liquid – ECT
9-The valve of a purge of an adsorber – EVAP
10-The fuel filter – outside of a tank
11-Regulator of pressure of fuel
12-The fuel pump built in a tank
13-The relay of the fuel pump – a box of the relay of the forward panel, a position 4
14-Warmed up? – a probe – HO2S – dokataliticheskiya
15-Activator of management of turns х.х. – ISC
16-Sensor of position of the activator of management of turns х.х. – ISC
17-Amplifier of ignition
18-Ignition coil
19-Injectors
20-The sensor of temperature of soaked-up air – IAT, to 98 g.
21-The sensor of temperature of soaked-up air – IAT, after 98 g.
22-Э / magnet of management of air of the inlet pipeline
23-Detonation sensor
24-H measuring instrument · m ссы air – MAF
25-Д / the pressure switch in system of hydrostrengthening of a wheel – PSP
26-Knot of management of a butterfly valve
27-The sensor of provision of a butterfly valve – TP
28-The sensor of speed of the car – VSS – on transmission

View of a compartment of the petrol engine of 1.8 l with a turbo-supercharging and the list of elements of a control system (on an illustration are shown not all)

1-The sensor of atmospheric pressure – BARO
2-The sensor of provision of a cam-shaft – CMP
3-Д / the switch of a closed position of a butterfly valve – CTP
4-Д / the switch of a pedal of coupling – CPP
5-The sensor of position of the crankshaft – CKP/sensor of turns of the engine – RPM
6-I will corrode lines of data – DLC – the central console
7-The control unit the engine – ECM
8-The sensor of temperature of cooling liquid – ECT
9-The valve of a purge of an adsorber – EVAP
10-The fuel filter – outside of a tank
11-Regulator of pressure of fuel
12-The fuel pump built in a tank
13-The relay of the fuel pump – a box of the relay of the forward panel, a position 4
14-Warmed up? – a probe – HO2S – dokataliticheskiya
15-Activator of management of turns х.х. – ISC
16-Sensor of position of the activator of management of turns х.х. – ISC
17-Amplifier of ignition
18-Ignition coil
19-Injectors
20-The sensor of temperature of soaked-up air – IAT
21-Detonation sensor
22-H measuring instrument · m ссы air – MAF
23-Д / the pressure switch in system of hydrostrengthening of a wheel – PSP
24-Knot of management of a butterfly valve
25-The sensor of provision of a butterfly valve – TP
26-The valve of adjustment of dumping of a turbokompressor – TC
27-The sensor of speed of the car – VSS – on transmission

View of a compartment of the diesel TDI engine and the list of elements of a control system (on an illustration are shown not all)

1-Sensor of temperature of fuel
2-Sensor of position of the fuel lever
3-Э / nozzle magnet
4-Э / magnet of adjustment of amount of fuel
5-Э / magnetic valve of an otsechka of fuel
6-H measuring instrument · m ссы air
7-The sensor of absolute pressure in the pipeline
8-The sensor of temperature of soaked-up air
9-Э / magnet of management of pressure of a turbokompressor
10-The sensor of atmospheric pressure – in the control unit the engine
11-The sensor of temperature of cooling liquid
12-Sensor of turns of the engine
13-Sensor of lifting of a needle of a nozzle
14-Э / a magnet of a retsirkulyatsiya of the fulfilled gases
15-The system relay – No. 5 in the panel of the relay of the dashboard
16-The relay of candles of an incandescence – in a box of the relay of the dashboard, a position 4
17-Control unit engine
18-Sensor of speed of the car
19-The sensor of provision of a pedal of an accelerator – over a pedal
20-The diagnostic socket – the central console