Wiring diagrams AUDI Audi A6 2.4 l Fuel injection engine (130 kW – 6 cylinder), engine code BDW

Wiring diagrams AUDI Audi A6 2.4 l Fuel injection engine (130 kW - 6 cylinder), engine code BDW from model year 2005

Audi A6	Current Flow Diagram	No. 3 / 1

		Edition 08.2007

Notes:

For information concerning

t	Position of relays and fuses

t	Multi-pin connections

t	Control units and relays

t	Earth connections

→ List of Fitting Locations!

For information concerning

t	Fault Finding Programs

→ guided fault finding

Audi A6	Current Flow Diagram	No. 3 / 2

Wiring diagrams AUDI Audi A6 2.4 l Fuel injection engine (130 kW – 6 cylinder), engine code BDW

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

Battery, energy management control unit, battery cut-off relay, fuse

Battery

J234

Airbag control unit

J644

Energy management control unit

J655

Battery cut-off relay

N253

Battery isolation igniter

S131

Fuse 1

S132

Fuse 2

S133

Fuse 3

S134

Fuse 4

SF6

Fuse 6 on fuse holder

SF8

Fuse 8 on fuse holder

T46b

46-pin connector, CAN separating connector right

T75

75-pin connector, grey, on airbag control unit

Earth point, on right in engine compartment

Earth point on engine block

372

Earth connection 7, in main wiring harness

B163

Positive connection 1 (15), in interior wiring harness

B272

Positive connection (30), in main wiring harness

B300

Positive connection 4 (30), in main wiring harness

B301

Positive connection 5 (30), in main wiring harness

B397

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

B406

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

•

CAN bus (data wire)

Fuse and relay carrier right in luggage compartment

up to about week 26.04

***

from about week 27.04

Audi A6	Current Flow Diagram	No. 3 / 3

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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

Starter, alternator, terminal 15 voltage supply relay, starter motor relay, suppression filter

Starter

Alternator

Voltage regulator

C24

Suppression filter

J53

Starter motor relay

J329

Terminal 15 voltage supply relay

J518

Entry and start authorisation control unit

J695

Starter motor relay 2

S42

Radiator fan single fuse

S104

Radiator fan fuse for 2nd speed

2-pin connector, black, on alternator

T17a

17-pin connector, red, coupling station on electronics box, left in plenum chamber

T20h

20-pin connector, black, connector A, on entry and start authorisation control unit

646

Earth point 2, on bulkhead

B165

Positive connection 2 (15), in interior wiring harness

B273

Positive connection (15), in main wiring harness

B276

Positive connection (50), in main wiring harness

B298

Positive connection 2 (30), in main wiring harness

D97

Connection (50), in engine compartment right wiring harness

Main fuse carrier electronics box right in plenum chamber

9-point relay carrier, behind driver storage compartment

up to October 2005

from November 2005

♦

no longer fitted, phased from model year 2006

Audi A6	Current Flow Diagram	No. 3 / 4

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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

Simos control unit, Motronic current supply relay

J217

Automatic gearbox control unit

J271

Motronic current supply relay

J361

Simos control unit

SA18

Fuse 8 on fuse holder engine compartment

SA20

Fuse 10 on fuse holder engine compartment

SB3

Fuse 3 on fuse holder

T17a

17-pin connector, red, coupling station on electronics box, left in plenum chamber

T20e

20-pin connector, black, on automatic gearbox control unit

Earth connection 1, in engine compartment wiring harness

646

Earth point 2, on bulkhead

B302

Positive connection 6 (30), in main wiring harness

D50

Positive connection (30), in engine compartment wiring harness

D51

Positive connection 1 (15), in engine compartment wiring harness

D101

Connection 1, in engine compartment wiring harness

Screw connection in electronics box left in plenum chamber

Relay carrier electronics box left in plenum chamber

***

models with automatic gearbox 01J

up to October 2005

from November 2005

Audi A6	Current Flow Diagram	No. 3 / 5

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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

Simos control unit, CAN separating connector, earth connections

J361

Simos control unit

J518

Entry and start authorisation control unit

SA12

Fuse 2 on fuse holder engine compartment

T17a

17-pin connector, red, coupling station on electronics box, left in plenum chamber

T46a

46-pin connector, CAN separating connector left

Earth connection 1, in engine compartment wiring harness

131

Earth connection 2, in engine compartment wiring harness

132

Earth connection 3, in engine compartment wiring harness

601

Earth point, on left of cylinder head

645

Earth point 1, on bulkhead

646

Earth point 2, on bulkhead

D102

Connection 2, in engine compartment wiring harness

•

CAN bus (data wire)

Audi A6	Current Flow Diagram	No. 3 / 6

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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

Simos control unit, injector, cylinder 1 - 4, ignition coil 1 - 4 with output stage

J361

Simos control unit

N30

Injector, cylinder 1

N31

Injector, cylinder 2

N32

Injector, cylinder 3

N33

Injector, cylinder 4

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

SA14

Fuse 4 on fuse holder engine compartment

Earth connection 1, in engine compartment wiring harness

131

Earth connection 2, in engine compartment wiring harness

132

Earth connection 3, in engine compartment wiring harness

D95

Connection (injectors), in engine compartment wiring harness

D102

Connection 2, in engine compartment wiring harness

Audi A6	Current Flow Diagram	No. 3 / 7

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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

Simos control unit, injector, cylinder 5 and 6, ignition coil 5 and 6 with output stage, accelerator position sender, throttle valve module

G79

Accelerator position sender

G185

Accelerator position sender 2

G186

Throttle valve drive, electric throttle

G187

Throttle valve drives angle sender 1, electric throttle

G188

Throttle valve drives angle sender 2, electric throttle

J338

Throttle valve module

J361

Simos control unit

N83

Injector, cylinder 5

N84

Injector, cylinder 6

N323

Ignition coil 5 with output stage

N324

Ignition coil 6 with output stage

Spark plug connector

Spark plugs

T17b

17-pin connector, black, coupling station on electronics box, left in plenum chamber

131

Earth connection 2, in engine compartment wiring harness

132

Earth connection 3, in engine compartment wiring harness

D95

Connection (injectors), in engine compartment wiring harness

D102

Connection 2, in engine compartment wiring harness

Audi A6	Current Flow Diagram	No. 3 / 8

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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

Simos control unit, engine speed sender, Hall sender, coolant temperature sender, intake manifold pressure sender, intake air temperature sender

G28

Engine speed sender

G40

Hall sender

G42

Intake air temperature sender

G62

Coolant temperature sender

G71

Intake manifold pressure sender

G163

Hall sender 2

J361

Simos control unit

327

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

D103

Connection 3, in engine compartment wiring harness

Audi A6	Current Flow Diagram	No. 3 / 9

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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

Simos control unit, knock sensors, active charcoal filter system solenoid valve 1, variable intake manifold change-over valve, secondary air pump relay, secondary air pump motor

G61

Knock sensor 1

G66

Knock sensor 2

J299

Secondary air pump relay

J361

Simos control unit

N80

Activated charcoal filter system solenoid valve 1

N156

Variable intake manifold change-over valve

S130

Secondary air pump fuse

SA15

Fuse 5 on fuse holder engine compartment

T3k

3-pin connector, green, on knock sensor 1

T3l

3-pin connector, grey, on knock sensor 2

V101

Secondary air pump motor

200

Earth connection (screening) in engine compartment wiring harness

646

Earth point 2, on bulkhead

D106

Connection 4, in engine compartment wiring harness

Relay carrier electronics box on right in plenum chamber

Audi A6	Current Flow Diagram	No. 3 / 10

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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

Simos control unit, continued coolant circulation relay, inlet camshaft control valve, continued coolant circulation pump, intake manifold flap potentiometer

G336

Intake manifold flap potentiometer

J151

Continued coolant circulation relay

J361

Simos control unit

N205

Inlet camshaft control valve 1

N208

Inlet camshaft control valve 2

SA13

Fuse 3 on fuse holder engine compartment

V51

Continued coolant circulation pump

131

Earth connection 2, in engine compartment wiring harness

D108

Connection 6, in engine compartment wiring harness

only countries with hot climate

Relay carrier electronics box left in plenum chamber

Audi A6	Current Flow Diagram	No. 3 / 11

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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

Simos control unit, lambda probe, lambda probe 2

G39

Lambda probe

G108

Lambda probe 2

J361

Simos control unit

SA16

Fuse 6 on fuse holder engine compartment

T6a

6-pin connector, black, for lambda probe

T6b

6-pin connector, black, for lambda probe 2

Z19

Lambda probe heater

Z28

Lambda probe 2 heater

D109

Connection 7, in engine compartment wiring harness

Audi A6	Current Flow Diagram	No. 3 / 12

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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

Simos control unit, lambda probe after catalytic converter

E45

Cruise control system switch

G130

Lambda probe after catalytic converter

G131

Lambda probe 2 after catalytic converter

J361

Simos control unit

J527

Steering column electronics control unit

SA17

Fuse 7 on fuse holder engine compartment

T4b

4-pin connector, brown, for lambda probe 2 after catalytic converter

T4h

4-pin connector, black, for lambda probe after catalytic converter

T17c

17-pin connector, white, coupling station on electronics box, left in plenum chamber

Z29

Lambda probe 1 heater after catalytic converter

Z30

Lambda probe 2 heater after catalytic converter

D110

Connection 8, in engine compartment wiring harness

models with cruise control system

Audi A6	Current Flow Diagram	No. 3 / 13

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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

Simos control unit, clutch pedal switch for engine start, clutch position sender

F194

Clutch pedal switch for engine start

G476

Clutch position sender

J217

Automatic gearbox control unit

J361

Simos control unit

J518

Entry and start authorisation control unit

J540

Electric park and handbrake control unit

J587

Selector lever sensors control unit

SB6

Fuse 6 on fuse holder

SB31

Fuse 31 on fuse holder

T10p

10-pin connector, black, on selector lever sensors control unit

T17c

17-pin connector, white, coupling station on electronics box, left in plenum chamber

T20e

20-pin connector, black, on automatic gearbox control unit

Earth point, lower part of left A-pillar

Earth point, centre behind dash panel

367

Earth connection 2, in main wiring harness

373

Earth connection 8, in main wiring harness

390

Earth connection 25, in main wiring harness

B278

Positive connection 2 (15a), in main wiring harness

E26

Connection selector lever lock, in Motronic wiring harness

models with manual gearbox

models with automatic gearbox 01J

up to October 2005

from November 2005

Audi A6	Current Flow Diagram	No. 3 / 14

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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

Simos control unit, brake light switch, brake pedal switch, radiator fan

Brake light switch

F47

Brake pedal switch

J104

ABS control unit

J293

Radiator fan control unit

J361

Simos control unit

SA19

Fuse 9 on fuse holder engine compartment

SB14

Fuse 14 on fuse holder

SB38

Fuse 38 on fuse holder

T4c

4-pin connector, black, electronics box, right in plenum chamber, radiator fan

T17a

17-pin connector, red, coupling station on electronics box, left in plenum chamber

T17f

17-pin connector, green, coupling station on left of A-pillar

Radiator fan

614

Earth point 2, on right in engine compartment

B335

Connection 1 (54), in main wiring harness

B336

Connection 2 (54), in main wiring harness

Audi A6	Current Flow Diagram	No. 3 / 15

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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, fuel pump relay, fuel system pressurisation pump, fuel gauge sender, fuel gauge

Fuel gauge sender

Fuel gauge

Fuel system pressurisation pump

G169

Fuel gauge sender 2

J17

Fuel pump relay

J285

Control unit in dash panel insert

J361

Simos control unit

SC1

Fuse 1 on fuse holder

T5a

5-pin connector, black, on fuel tank

T17b

17-pin connector, black, coupling station on electronics box, left in plenum chamber

T32

32-pin connector, grey, on dash panel insert

Y24

Display in dash panel insert

371

Earth connection 6, in main wiring harness

410

Earth connection 1 (sender earth), in main wiring harness

D107

Connection 5, in engine compartment wiring harness

only four-wheel drive

Relay carrier electronics box left in plenum chamber

Audi A6	Current Flow Diagram	No. 3 / 16

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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, oil pressure warning lamp, coolant temperature and coolant shortage warning lamp, oil pressure switch, oil level and oil temperature sender

Oil pressure switch

F66

Coolant shortage indicator switch

G266

Oil level and oil temperature sender

J285

Control unit in dash panel insert

J533

Data bus diagnostic interface

Oil pressure warning lamp

K28

Coolant temperature and coolant shortage warning lamp

SB4

Fuse 4 on fuse holder

T17a

17-pin connector, red, coupling station on electronics box, left in plenum chamber

T17b

17-pin connector, black, coupling station on electronics box, left in plenum chamber

T26a

26-pin connector, black, on data bus diagnostic interface

T32

32-pin connector, grey, on dash panel insert

Y24

Display in dash panel insert

131

Earth connection 2, in engine compartment wiring harness

410

Earth connection 1 (sender earth), in main wiring harness

•

CAN bus (data wire)

output sender earth

up to October 2005

***

from November 2005

Wiring diagrams AUDI Audi A6 2.4 l Fuel injection engine (130 kW – 6 cylinder), engine code BDW

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