audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Overview of fitting locations - engines with code letters BHZ, BZC, CDLA and CDLC > < Overviews - fitting locations

A3 Mk2

Overview of fitting locations - engines with code letters AXX, BPY and BWA
Overview of fitting locations - engines with code letters AXX, BPY and BWA
Components A to N are not shown in the overview.
   
1 - Solenoid valve for charge pressure control -N75-
q   Located directly on turbocharger → Fig.
2 - Turbocharger air recirculation valve -N249-
q   Located directly on turbocharger → Fig.
3 - Engine control unit -J623-
q   Removing and installing → Chapter
4 - Ignition coils with output stages
q   Removing and installing → Chapter
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.
5 - Lambda probe -G39- and Lambda probe heater -Z19-
q   Fitting location → Fig.
q   Removing and installing → Chapter
6 - Fuel pressure sender for low pressure -G410-
q   15 Nm
7 - Fuel pressure regulating valve -N276-
8 - Inlet camshaft control valve 1 -N205-
q   Removing and installing → Rep. Gr.15
9 - Coolant temperature sender -G62-
q   Fitting location → Fig.
10 - 6-pin connector
q   For Lambda probe -G39- and Lambda probe heater -Z19- (black) → Fig.
11 - Single-plunger high-pressure pump
q   Removing and installing → Chapter
12 - Component not fitted
13 - Intake manifold flap motor -V157- with intake manifold flap potentiometer -G336-
q   After the fuel rail has been renewed, intake manifold flap potentiometer -G336- must be adapted to the engine control unit -J623-, see vehicle diagnostic and service information system -VAS 5052-, “Guided Functions”
14 - Activated charcoal filter solenoid valve 1 -N80-
15 - Connector
q   For Hall sender -G40- and fuel pressure sender -G247-
q   Fitting location → Fig.
16 - Charge air pressure sender -G31-
q   Fitting location → Fig.
17 - Engine speed sender -G28-
q   Fitting location → Fig.
18 - 8-pin connector for injectors
q   Fitting location → Fig.
19 - Throttle valve module -J338-, throttle valve drive for electric throttle -G186-
q   Throttle valve drive angle sender 1 for electric throttle -G187- and throttle valve drive angle sender 2 for electric throttle -G188-
q   After the throttle valve module -J338- has been renewed, it must be adapted to the engine control unit -J623-, see vehicle diagnostic and service information system -VAS 5052-“Guided Functions”
20 - Intake air temperature sender -G42-
q   11 Nm
21 - Fuel pressure sender -G247-
q   22 Nm
q   Fitting location → Fig.
q   Removing and installing → Chapter
22 - Hall sender -G40- (camshaft position sensor)
q   Electrical connector → Fig.
A - Diagnostic connector
q   In driver's knee restraint
B - Air mass meter -G70-
q   In air cleaner (top section) → Fig.
q   Removing and installing → Chapter
C - Knock sensor 1 -G61-
q   For cylinders 1 and 2
q   20 Nm
q   Fitting location → Fig.
q   3-pin connector for knock sensor 1 -G61- → Fig.
q   Removing and installing → Chapter
D - Knock sensor 2 -G66-
q   For cylinders 3 and 4
q   20 Nm
q   Fitting location → Fig.
q   3-pin connector for knock sensor 2 -G66- → Fig.
q   Removing and installing → Chapter
E - Fuel pump control unit -J538-
q   Fitting location → Fig.
q   Adaption must be performed after renewing fuel pump control unit -J538-; refer to → Rep. Gr.20.
F - Lambda probe after catalytic converter -G130- and Lambda probe heater 1 after catalytic converter -Z29-
q   Fitting location → Fig.
q   Removing and installing → Chapter
G - Brake light switch - F- and brake pedal switch -F63-
q   Fitting location → Fig.
H - Accelerator position sender -G79- and accelerator position sender 2 -G185-
q   On accelerator pedal (both senders are accommodated in one housing)
q   Fitting location → Fig.
I - Clutch position sender -G476-
q   Only fitted on vehicles with manual gearbox
q   Fitting location → Fig.
q   Removing and installing, see Power transmission, clutch → Rep. Gr.30
J - Relay and fuse holder in electronics box
q   Assignment, refer to → Current flow diagrams, Electrical fault finding and Fitting locations
K - Radiator fan control unit -J293-
q   Fitted on left-side radiator fan (in direction of travel)
q   Fitting location → Fig.
L - Injectors
q   In fuel rail
q   Removing and installing → Chapter
q   Injector, cylinder 1 -N30-
q   Injector, cylinder 2 -N31-
q   Injector, cylinder 3 -N32-
q   Injector, cylinder 4 -N33-
The fuel injectors are high-pressure injectors. They inject fuel at high pressure (maximum approx. 120 bar) directly into the cylinder.
M - Oil pressure switch -F1-
q   Fitting location → Fig.
N - Radiator outlet coolant temperature sender -G83-
q   Fitting location → Fig.

   

Overview of fitting locations - engines with code letters BHZ, BZC, CDLA and CDLC > < Overviews - fitting locations