Audi Workshop Service and Repair Manuals

Overview of fitting locations   Note Some components are located beneath the engine cover panel. For removal refer to → Fig..

1 -	Intake manifold flap motor -V157-

q	Removing and installing → Chapter

2 -	Temperature sender after particulate filter -G527-

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.26

3 -	Lambda probe -G39- with Lambda probe heater -Z19-

q	Fitting location → Fig.

q	Removing and installing → Chapter

4 -	Exhaust gas recirculation valve -N18- with exhaust gas recirculation potentiometer -G212-

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.26

5 -	Engine control unit

q	Removing and installing → Chapter

6 -	Temperature sender before particulate filter -G506-

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.26

7 -	Exhaust gas pressure sensor 1 -G450-

q	Fitting location → Fig.

q	Removing and installing → Chapter

8 -	Exhaust gas temperature sender 1 -G235-

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.26

9 -	Unit injectors

q	Unit injector solenoid valve, No. 1 cyl. -N240-

q	Unit injector solenoid valve, No. 2 cyl. -N241-

q	Unit injector solenoid valve, No. 3 cyl. -N242-

q	Unit injector solenoid valve, No. 4 cyl. -N243-

q	Removing and installing → Chapter

10 -	Exhaust gas recirculation cooler change-over valve -N345-

q	Fitting location → Fig.

11 -	Coolant temperature sender -G62-

q	Fitting location → Fig.

q	If necessary release pressure in cooling system before removing

12 -	Charge pressure control solenoid valve -N75-

q	Fitting location → Fig.

13 -	Electrical connectors on left side of bulkhead

q	Fitting location → Fig.

14 -	Engine electronics warning lamp -K149-

q	In instrument cluster

15 -	Accelerator position sender -G79- with accelerator position sender 2 -G185-

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.20

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

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.46

17 -	Fuel pump relay -J17-

q	Fitting location → Fig.

18 -	Clutch position sender -G476-

q	Fitting location → Fig.

q	Removing and installing → Rep. Gr.30

19 -	Relay and fuse holder in electronics box in engine compartment

q	With terminal 30 voltage supply relay -J317-

q	With terminal 15 voltage supply relay -J329-

q	For identification of socket position refer to → Current flow diagrams, Electrical fault finding and Fitting locations

20 -	Automatic glow period control unit -J179-

q	Under electronics box in engine compartment

q	Fitting location → Fig.

q	Removing and installing → Chapter

21 -	Air mass meter -G70-

q	Removing and installing → Chapter

22 -	Tandem pump

q	Removing, installing and checking → Rep. Gr.20

23 -	Multi-pin connector

q	For unit injectors

q	Fitting location → Fig.

24 -	Engine speed sender -G28-

q	Fitting location → Fig.

q	Removing and installing → Chapter

q

4.5 Nm

25 -	Fuel temperature sender -G81-

q	Fitting location → Fig.

26 -	Glow plugs

q	Glow plug 3 -Q12-

q	Glow plug 4 -Q13-

q	Removing and installing ceramic glow plugs → Chapter

27 -	3-pin connector

q	For Hall sender -G40-

q	Fitting location → Fig.

28 -	Radiator outlet coolant temperature sender -G83-

q	Fitting location → Fig.

29 -	Glow plugs

q	Glow plug 1 -Q10-

q	Glow plug 2 -Q11-

q	Removing and installing ceramic glow plugs → Chapter

30 -	Charge pressure sender -G31- with intake air temperature sender -G42-

q	Fitting location → Fig.

31 -	Hall sender -G40-

q	For camshaft position

q	Fitting location → Fig.

Removing engine cover panel –  Lift off engine cover panel (outside -1- and inside -2-) by pulling up evenly.

Fitting location of multi-pin connector for unit injectors t  To disconnect, pull release pin -arrow 1- and slacken knurled nut -arrow 2-.

Fitting location of accelerator position sender -G79- with accelerator position sender 2 -G185- t  To detach the electrical connection -2-, press the release tab and pull off the cable guide -1-. t  Removing and installing → Rep. Gr.20   Note Diagram shows set-up on left-hand drive vehicles.

Fitting location of brake light switch -F- and brake pedal switch -F63- up to approx. 11.2005 t  On pedal bracket above brake pedal -arrow-. t  Removing and installing → Rep. Gr.46

Fitting location of brake light switch -F- and brake pedal switch -F63- from approx. 11.2005 onwards (gradual introduction) t  On brake master cylinder in engine compartment. t  Removing and installing → Rep. Gr.46

Fitting location of fuel pump relay -J17- t  Position -2.1- in 5-position relay carrier located above onboard power supply control unit and beneath dash panel on driver's side.

Fitting location of clutch position sender -G476- t  Removing and installing → Rep. Gr.30

Fitting location of automatic glow period control unit -J179- t  -Item 1- on relay carrier below electronics box in engine compartment.

Fitting location of coolant temperature sender -G62- t  On left side of engine -arrow-.

Fitting locations of components on bulkhead (left-side) 1 -  Charge pressure control solenoid valve -N75- 2 -  Electrical connector (orange) for temperature sender after particulate filter -G527- 3 -  Electrical connector (brown) for temperature sender before particulate filter -G506- 4 -  Electrical connector (black) for Lambda probe -G39- 5 -  Electrical connector (black) for exhaust gas temperature sender 1 -G235-

Fitting locations of components on top of particulate filter 3 -  Lambda probe -G39- with Lambda probe heater -Z19-; removing and installing → Chapter 4 -  Pressure pipe going to exhaust gas pressure sensor 1 -G450- 5 -  Temperature sender before particulate filter -G506-; removing and installing → Rep. Gr.26   Note Disregard items marked -1- and -2-.

Fitting locations of components on underside of particulate filter 1 -  Temperature sender after particulate filter -G527-; removing and installing → Rep. Gr.26 2 -  Pressure pipe going to exhaust gas pressure sensor 1 -G450-

Fitting location of exhaust gas temperature sender 1 -G235- t  In exhaust manifold -arrow-. t  Removing and installing → Rep. Gr.26

Fitting location of exhaust gas recirculation valve -N18- with exhaust gas recirculation potentiometer -G212- t  At rear of intake manifold t  Removing and installing → Rep. Gr.26 1 -  Electrical connector for exhaust gas recirculation valve -N18- with exhaust gas recirculation potentiometer -G212-   Note Disregard -arrows-.

Fitting location of intake manifold flap motor -V157- t  On intake manifold t  Removing and installing → Chapter 1 -  Electrical connector for intake manifold flap motor -V157-   Note Disregard -arrows-.

Fitting location of change-over valve for exhaust gas recirculation cooler -N345- t  On left side of intake manifold -arrow-.

Fitting location of exhaust gas pressure sensor 1 -G450- t  On top of intake manifold -arrow-. t  Removing and installing → Chapter

Fitting location of fuel temperature sender -G81- t  At front of engine -arrow-.

Fitting location of radiator outlet coolant temperature sender -G83- t  On connecting flange for thermostat -arrow-.

Fitting location of engine speed sender -G28- t  On flywheel side of engine. t  Removing and installing → Chapter 1 -  Engine speed sender -G28- 2 -  Sender wheel

Fitting location of charge pressure sender -G31- with intake air temperature sender -G42- t  In charge air cooler at front right of engine compartment -arrow-

Fitting location of 3-pin connector for Hall sender -G40- t  At front of engine below intake manifold -arrow-.

Fitting location of Hall sender -G40- t  At camshaft sprocket on right side of engine -arrow-