Wiring diagrams AUDI 1.8l petrol engine , CDAA

Wiring diagrams AUDI 1.8l petrol engine , CDAA From May 2009

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 1

		11.2011

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 2

Wiring diagrams AUDI
1.8l petrol engine , CDAA

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Ignition/starter switch, Cruise control system switch, Steering column electronics control unit

Ignition/starter switch

E45

Cruise control system switch

J527

Steering column electronics control unit

SB6

Fuse 6 on fuse holder B

T20b

20-pin connector

T40

40-pin connector

Earth point, next to steering column

Earth point, lower part of left A-pillar

392

Earth connection 27, in main wiring harness

393

Earth connection 28, in main wiring harness

Only models with cruise control system (CCS)

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 3

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Onboard supply control unit, Steering column electronics control unit, Engine control unit, Terminal 50 voltage supply relay

Battery

Starter

J519

Onboard supply control unit

J527

Steering column electronics control unit

J623

Engine control unit

J682

Terminal 50 voltage supply relay

T20b

20-pin connector

T52b

52-pin connector

T52c

52-pin connector

T94

94-pin connector

392

Earth connection 27, in main wiring harness

B240

Positive connection 2 (50), in interior wiring harness

B475

Connection 11, in main wiring harness

see applicable current flow diagram for battery in engine compartment

Only models with cruise control system (CCS)

Cross section depends on equipment

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 4

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Clutch position sender, Onboard supply control unit, Engine control unit

G476

Clutch position sender

J519

Onboard supply control unit

J623

Engine control unit

SB22

Fuse 22 on fuse holder B

T40

40-pin connector

T52c

52-pin connector

T94

94-pin connector

Earth connection 1, in engine compartment wiring harness

392

Earth connection 27, in main wiring harness

B326

Positive connection 12 (30a) in main wiring harness

Only models with manual gearbox

Only models with dual clutch gearbox 0AM

Only models with dual clutch gearbox 02E

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 5

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Brake pedal switch, Onboard supply control unit, Engine control unit

Brake light switch

F63

Brake pedal switch

J519

Onboard supply control unit

J623

Engine control unit

SB22

Fuse 22 on fuse holder B

T40

40-pin connector

T52c

52-pin connector

T94

94-pin connector

Earth connection 1, in engine compartment wiring harness

392

Earth connection 27, in main wiring harness

B335

Connection 1 (54), in main wiring harness

B344

Connection 1 (61), in main wiring harness

Only models with manual gearbox

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 6

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Onboard supply control unit, Fuel pump control unit, Engine control unit, Terminal 15 voltage supply relay 2

J519

Onboard supply control unit

J538

Fuel pump control unit

J623

Engine control unit

J681

Terminal 15 voltage supply relay 2

SC1

Fuse 1 on fuse holder C

SC2

Fuse 2 on fuse holder C

SC4

Fuse 4 on fuse holder C

SB30

Fuse 30 on fuse holder B

SC40

Fuse 40 on fuse holder C

T10b

10-pin connector

T40

40-pin connector

T52b

52-pin connector

T94

94-pin connector

Earth connection 1, in engine compartment wiring harness

392

Earth connection 27, in main wiring harness

B273

Positive connection (15), in main wiring harness

B277

Positive connection 1 (15a) in main wiring harness

B278

Positive connection 2 (15a) in main wiring harness

B281

Positive connection 5 (15a) in main wiring harness

B478

Connection 14, in main wiring harness

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 7

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Fuel gauge sender, Fuel system pressurisation pump, Fuel pump control unit, Engine control unit

Alternator

Fuel gauge sender

Fuel system pressurisation pump

J538

Fuel pump control unit

J623

Engine control unit

SA5

Fuse 5 in fuse holder A

SC27

Fuse 27 on fuse holder C

T2u

2-pin connector, on left in engine compartment

4-pin connector, on left in engine compartment

T10b

10-pin connector

T94

94-pin connector

Earth connection 1, in engine compartment wiring harness

391

Earth connection 26, in main wiring harness

730

Earth point 1, on right rear wheel housing

B272

Positive connection (30), in main wiring harness

see applicable current flow diagram for battery in engine compartment

Only models with no air conditioning system

Only models with air conditioning system

Cross section depends on equipment

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 8

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Continued coolant circulation relay, Main relay, Engine control unit, Continued coolant circulation pump

J151

Continued coolant circulation relay

J271

Main relay

J623

Engine control unit

SB10

Fuse 10 on fuse holder B

SB13

Fuse 13 on fuse holder B

SB23

Fuse 23 on fuse holder B

T2az

2-pin connector

T40

40-pin connector

T94

94-pin connector

V51

Continued coolant circulation pump

Earth connection 1, in engine compartment wiring harness

607

Earth point, on left in plenum chamber

D50

Positive connection (30), in engine compartment wiring harness

D104

Positive connection 2 (30a), in engine compartment wiring harness

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 9

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Engine control unit, Injector, cylinder 1, Injector, cylinder 2, Injector, cylinder 3, Injector, cylinder 4

J623

Engine control unit

N30

Injector, cylinder 1

N31

Injector, cylinder 2

N32

Injector, cylinder 3

N33

Injector, cylinder 4

T8i

8-pin connector, near injectors

T60

60-pin connector

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 10

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Engine control unit, Engine component current supply relay, Charge pressure control solenoid valve, Activated charcoal filter solenoid valve 1, Camshaft control valve 1, Turbocharger air recirculation valve, Fuel pressure regulating valve, Intake manifold flap valve, Valve for oil pressure control

J623

Engine control unit

J757

Engine component current supply relay

N75

Charge pressure control solenoid valve

N80

Activated charcoal filter solenoid valve 1

N205

Camshaft control valve 1

N249

Turbocharger air recirculation valve

N276

Fuel pressure regulating valve

N316

Intake manifold flap valve

N428

Valve for oil pressure control

SB20

Fuse 20 on fuse holder B

SB24

Fuse 24 on fuse holder B

T4d

4-pin connector, near radiator fan

T14

14-pin connector, near front left longitudinal member

T40

40-pin connector

T60

60-pin connector

T94

94-pin connector

B321

Positive connection 7 (30a) in main wiring harness

D116

Connection 14 in engine compartment wiring harness

see applicable current flow diagram for radiator fan

Gradually discontinued

gradual introduction

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 11

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Intake air temperature sender, Coolant temperature sender, Air mass meter, Radiator outlet coolant temperature sender, Engine control unit

G42

Intake air temperature sender

G62

Coolant temperature sender

G70

Air mass meter

G83

Radiator outlet coolant temperature sender

J623

Engine control unit

T60

60-pin connector

T94

94-pin connector

316

Earth connection (sender earth 2) in engine wiring harness

327

Earth connection (sender earth), in engine compartment wiring harness

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 12

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Lambda probe, Lambda probe after catalytic converter, Engine control unit

G39

Lambda probe

G130

Lambda probe after catalytic converter

J623

Engine control unit

SB21

Fuse 21 on fuse holder B

T4b

4-pin connector, on Lambda probe after catalytic converter

T6c

6-pin connector, on Lambda probe before catalytic converter

T40

40-pin connector

T94

94-pin connector

Z19

Lambda probe heater

Z29

Lambda probe 1 heater after catalytic converter

D125

Connection 23 in engine compartment wiring harness

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 13

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Engine speed sender, Hall sender, Knock sensor 1, Accelerator position sender, Fuel pressure sender, Engine control unit

G28

Engine speed sender

G40

Hall sender

G61

Knock sensor 1

G79

Accelerator position sender

G185

Accelerator position sender 2

G247

Fuel pressure sender

J623

Engine control unit

T3q

3-pin connector, near knock sensor

T6k

6-pin connector

T6s

6-pin connector, in engine compartment

T60

60-pin connector

T94

94-pin connector

200

Earth connection (screening), in engine compartment wiring harness

220

Earth connection (sender earth), in engine wiring harness

B537

Connection 28, in main wiring harness

D141

Connection (5V) in engine prewiring harness

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 14

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Oil pressure switch for reduced oil pressure, Charge pressure sender, Intake manifold flap potentiometer, Throttle valve module, Engine control unit

F378

Oil pressure switch for reduced oil pressure

G31

Charge pressure sender

G186

Throttle valve drive for electric throttle

G187

Throttle valve drive angle sender 1 for electric throttle

G188

Throttle valve drive angle sender 2 for electric throttle

G336

Intake manifold flap potentiometer

J338

Throttle valve module

J623

Engine control unit

T6d

6-pin connector

T6s

6-pin connector, in engine compartment

T14

14-pin connector, near front left longitudinal member

T60

60-pin connector

T94

94-pin connector

220

Earth connection (sender earth), in engine wiring harness

D130

Connection 28 in engine compartment wiring harness

D174

Connection 2 (5V) in engine prewiring harness

gradual introduction

Only models with no US equipment

Gradually discontinued

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 15

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Engine control unit, Ignition coil 1 with output stage, Ignition coil 2 with output stage, Ignition coil 3 with output stage, Ignition coil 4 with output stage

J623

Engine control unit

N70

Ignition coil 1 with output stage

N127

Ignition coil 2 with output stage

N291

Ignition coil 3 with output stage

N292

Ignition coil 4 with output stage

Spark plug connector

Spark plugs

SB14

Fuse 14 on fuse holder B

T14

14-pin connector, near front left longitudinal member

T40

40-pin connector

T60

60-pin connector

Earth point, on cylinder head

281

Earth point 1, engine prewiring harness

283

Earth point 2, engine prewiring harness

394

Earth connection 29, in main wiring harness

655

Earth point, on left headlight

D189

Connection (87a) in engine prewiring harness

gradual introduction

Gradually discontinued

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 16

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Data bus diagnostic interface, Engine control unit, Mechatronic unit for dual clutch gearbox

J533

Data bus diagnostic interface

J623

Engine control unit

J743

Mechatronic unit for dual clutch gearbox

T16

16-pin connector

T20d

20-pin connector

T20e

20-pin connector

T25

25-pin connector

T94

94-pin connector

B383

Connection 1 (powertrain CAN bus, high), in main wiring harness

B390

Connection 1 (powertrain CAN bus, low), in main wiring harness

B444

Connection 1 (diagnosis), in main wiring harness

Only models with dual clutch gearbox 02E

Only models with dual clutch gearbox 0AM

Diagnostic connection

If fitted

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 17

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Control unit in dash panel insert, Data bus diagnostic interface

J285

Control unit in dash panel insert

J533

Data bus diagnostic interface

Alternator warning lamp

K31

Cruise control system warning lamp

K149

Engine electronics warning lamp

SB12

Fuse 12 on fuse holder B

T20d

20-pin connector

T32

32-pin connector

T40

40-pin connector

388

Earth connection 23, in main wiring harness

389

Earth connection 24, in main wiring harness

390

Earth connection 25, in main wiring harness

638

Earth point, on right A-pillar

B482

Connection 18, in main wiring harness

B708

Connection 1 (dash panel insert CAN bus high) in main wiring harness

B709

Connection 1 (dash panel insert CAN bus low) in main wiring harness

gradual introduction

Gradually discontinued

Audi A3 Cabriolet	Current Flow Diagram	No. 92 / 18

Get access to all wiring diagrams of the car

ws	=	white
sw	=	black
ro	=	red
rt	=	red
br	=	brown
gn	=	green
bl	=	blue
gr	=	grey
li	=	purple
vi	=	purple
ge	=	yellow
or	=	orange
rs	=	pink

Oil pressure switch, Fuel gauge sender 2, Oil level and oil temperature sender, Control unit in dash panel insert

F22

Oil pressure switch

Fuel gauge

Coolant temperature gauge

G169

Fuel gauge sender 2

G266

Oil level and oil temperature sender

J285

Control unit in dash panel insert

Oil pressure warning lamp

K16

Reserve fuel warning lamp

K28

Coolant temperature and coolant shortage warning lamp

K83

Exhaust emissions warning lamp

6-pin connector, near front left longitudinal member

T14

14-pin connector, near front left longitudinal member

T32

32-pin connector

381

Earth connection 16, in main wiring harness

401

Earth connection (sender earth), in interior wiring harness

655

Earth point, on left headlight

B283

Positive connection 7 (15a) in main wiring harness

Only models with all-wheel drive

Wiring diagrams AUDI 1.8l petrol engine , CDAA

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