Audi Workshop Service and Repair Manuals

Overview of fitting locations Components A to O are not shown in the exploded view.

1  -	Air mass meter -G70-

q

→ Fig.

2 -	Lambda probe -G39- and Lambda probe heater -Z19-

3 -	Lambda probe after catalytic converter -G130- and Lambda probe heater 1 after catalytic converter -Z29-

q

→ Fig.

4 -	Coolant temperature sender -G62-

q

→ Fig.

5 -	Camshaft control valve 1 -N205-

q

→ Fig.

6 -	Fuel pressure regulating valve -N276-

q

→ Fig.

7 -	Single-plunger high-pressure pump

8 -	Fuel pressure sender, low pressure -G410-

q

15 Nm

9 -	Intake manifold flap motor -V157- with intake manifold flap potentiometer -G336-

10 -	Engine speed sender -G28-

q

→ Fig.

11 -	Activated charcoal filter solenoid valve 1 -N80-

12 -	6-pin connector

q	For Lambda probe -G39- and Lambda probe heater -Z19- (black) → Fig.

13 -	6-pin connector

q	Lambda probe after catalytic converter -G130- and Lambda probe 1 heater after catalytic converter -Z29- (brown connector)

14 -	Engine control unit -J623-

q	Removing and installing → Rep. Gr.24

15 -	Charge pressure sender -G31-

q

→ Fig.

16 -	Throttle valve module -J338-, throttle valve drive (electric throttle operation) -G186-

q	Throttle valve drive angle sender 1 -G187- and throttle valve drive angle sender 2 -G188-

q	After the throttle valve module -J338- has been renewed, it must be adapted to the engine control unit -J623- (Basic setting, Display group 60), see “Guided Fault Finding”.

q

→ Fig.

17 -	Intake air temperature sender -G42-

q

→ Fig.

18 -	Fuel pressure sender -G247-

q

→ Fig.

19 -	Hall sender -G40- (camshaft position sensor)

q

→ Fig.

20 -	Ignition coils with output stages

q	Ignition coil 1 with output stage -N70-

q	Ignition coil 2 with output stage -N127-

q	Ignition coil 3 with output stage -N291-

q	Ignition coil 4 with output stage -N292-

q	Puller -T40039- is required for removing ignition coils from cylinder head.

q	Removing and installing → Rep. Gr.24

21 -	Turbocharger air recirculation valve -N249-

q	Located directly on turbocharger → Fig.

22 -	Charge pressure control solenoid valve -N75-

q	Located directly on turbocharger → Fig.

A -	Diagnostic connector

q	In driver's knee restraint

B -	Fuel pump control unit -J538-

q

→ Fig.

C -	“EPC” warning lamp

q	In instrument cluster

D -	“MIL” exhaust emissions warning lamp

q	In instrument cluster

E -	8-pin connector for injectors

q

→ Fig.

F -

Connector

q	For Hall sender -G40- and fuel pressure sender -G247-

q

→ Fig.

G -	Brake light switch - F- and brake pedal switch -F63-

q

→ Fig.

H -	Accelerator position sender -G79- and accelerator position sender 2 -G185-

q	On accelerator pedal (both senders are accommodated in one housing)

I -	Clutch pedal switch -F36-

q

→ Fig.

J -	Relay and fuse holder in electronics box

q

→ Fig.

K -	Radiator fan control unit -J293-

q	Installed in left-side radiator fan (in direction of travel)

L -

Injectors

q	In fuel rail

q	Injector, cylinder 1 -N30-

q	Injector, cylinder 2 -N31-

q	Injector, cylinder 3 -N32-

q	Injector, cylinder 4 -N33-

q	Removing and installing → Rep. Gr.24

The fuel injectors are high-pressure injectors. They inject fuel at high pressure (maximum approx. 120 bar) directly into the cylinder.

M -	Knock sensor 1 -G61-

q	For cylinders 1 and 2

q	Tightening torque: 20 Nm

q

→ Fig.

N -	Knock sensor 2 -G66-

q	For cylinders 3 and 4

q	Tightening torque: 20 Nm

q

→ Fig.

O -	Oil pressure sender -G10-

q

→ Fig.

Fuel pressure sender -G247--1- (tightening torque: 15 Nm)

Hall sender -G40--1-

Air mass meter -G70--1-

Camshaft control valve 1 -N205--1- and fuel pressure regulating valve -N276--2-

Intake air temperature sender -G42--1-; throttle valve module -J338--2-

Fuel pump control unit -J538--1-

Electrical connectors 1 -  Lambda probe after catalytic converter -G130- and Lambda probe 1 heater after catalytic converter -Z29- (brown connector) 2 -  Lambda probe -G39- and Lambda probe heater -Z19- (black connector)

Lambda probes 1 -  Lambda probe after catalytic converter -G130- and Lambda probe heater 1 after catalytic converter -Z29- 2 -  Lambda probe -G39- and Lambda probe heater -Z19-

Fitting location of engine control unit -J623-

Coolant temperature sender -G62--1-

Fitting location for brake light switch -F- and brake pedal switch for cruise control system (diesel direct-injection system) -F47-, clutch pedal switch -F36- 1 -  Brake light switch -F-, brake pedal switch -F47- 2 -  Clutch pedal switch -F36-   Note Switches must not be installed more than once, otherwise they may not fit securely.

Fitting locations in 4-position relay carrier in plenum chamber electronics box 1.1 -  Not used 1.2 -  2 -  Motronic current supply relay -J271- 3 -  Current supply relay for engine components -J757- A -  B -  C -

Fitting locations on 9-position relay carrier in driver's footwell 1 -  Fuel pump relay -J17-

Electrical connectors 1 -  Oil pressure sender -G10- 2 -  3-pin connector (grey) for engine speed sender -G28- 3 -  Engine speed sender -G28-

Fitting locations of components below intake manifold 1 -  Knock sensor 1 -G61- 2 -  Knock sensor 2 -G66- 3 -  Oil pressure sender -G10- 4 -  3-pin connector (grey) for engine speed sender -G28- 5 -  Electrical connector for Hall sender -G40- and fuel pressure sender -G247- 6 -  8-pin connector for injectors

Charge pressure sender -G31--1-

Components on turbocharger 1 -  Turbocharger 2 -  Charge pressure control solenoid valve -N75- 3 -  Turbocharger air recirculation valve -N249-