Wiring diagrams AUDI Audi Q7 4.2 l – TDI, Common Rail (240 kW – 8-cylinder), engine code BTR

Wiring diagrams AUDI Audi Q7 4.2 l - TDI, Common Rail (240 kW - 8-cylinder), engine code BTR from March 2007

Audi Q7	Current Flow Diagram	No. 53 / 1

		Edition 04.2009

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 Q7	Current Flow Diagram	No. 53 / 2

Wiring diagrams AUDI Audi Q7 4.2 l – TDI, Common Rail (240 kW – 8-cylinder), engine code BTR

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 isolation igniter, fuses

Battery

J234

Airbag control unit

J329

Terminal 15 voltage supply relay

J367

Battery monitor control unit

J518

Entry and start authorisation control unit

J644

Energy management control unit

N253

Battery isolation igniter

SD1

Fuse 1 on fuse holder D

SD2

Fuse 2 on fuse holder D

SD3

Fuse 3 on fuse holder D

SD4

Fuse 4 on fuse holder D

SD5

Fuse 5 on fuse holder D

T2au

2-pin connector, yellow, on battery isolation igniter

T2az

2-pin connector, on battery monitor control unit

T10d

10-pin connector, blue, coupling station on electronics box, plenum chamber

T20e

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

T46a

46-pin connector, black, CAN disconnector left

T75

75-pin connector, grey, on airbag control unit (USA: white)

624

Earth point, starter battery

B273

Positive connection (15), in main wiring harness

•

CAN bus (data wire)

Relay and fuse carrier under driver seat

screw connection (31) battery wire before driver seat

♦

up to May 2007

♦♦

from June 2007

up to May 2008

from June 2008

Audi Q7	Current Flow Diagram	No. 53 / 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

Starter, alternator, starter motor relay, starter motor relay 2, slave start socket

Starter

Alternator

Voltage regulator

J53

Starter motor relay

J533

Data bus diagnostic interface

J695

Starter motor relay 2

SB6

Fuse 6 on fuse holder B

SB8

Fuse 8 on fuse holder B

SB9

Fuse 9 on fuse holder B

2-pin connector, black, on alternator

T10f

10-pin connector, red, coupling station on electronics box, plenum chamber

T10z

10-pin connector, white, coupling station on electronics box, plenum chamber

T20

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

TV22

Terminal 30 wiring junction 2

Slave start socket

Earth point, on right in engine compartment

Earth point on engine block

B177

Connection (61), in interior wiring harness

B272

Positive connection (30), in main wiring harness

D51

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

D97

Connection (50), in engine compartment wiring harness

Relay and fuse carrier, electronics box plenum chamber

♦

up to May 2007

♦♦

from June 2007

up to May 2008

from June 2008

Audi Q7	Current Flow Diagram	No. 53 / 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

Automatic glow period control unit, glow plugs

J179

Automatic glow period control unit

Q10

Glow plug 1

Q13

Glow plug 4

Q15

Glow plug 6

Q16

Glow plug 7

Fuse in relay plate fuse holder

Fuse in relay plate fuse holder

T8v

8-pin connector, black, in right engine compartment

T10m

10-pin connector, black, coupling station on electronics box, plenum chamber

D103

Connection 3, in engine compartment wiring harness

D144

Positive connection 5 (30), in engine compartment wiring harness

Relay and fuse carrier, electronics box plenum chamber

Audi Q7	Current Flow Diagram	No. 53 / 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

Glow period control unit 2, glow plugs

J703

Glow period control unit 2

Q11

Glow plug 2

Q12

Glow plug 3

Q14

Glow plug 5

Q17

Glow plug 8

Fuse in relay plate fuse holder

S13

Fuse in relay plate fuse holder

T8v

8-pin connector, black, in right engine compartment

D106

Connection 4, in engine compartment wiring harness

Relay and fuse carrier, electronics box plenum chamber

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, terminal 30 voltage supply relay

J317

Terminal 30 voltage supply relay

J623

Engine control unit

T94

94-pin connector, black, on engine control unit

Earth connection 1, in engine compartment wiring harness

132

Earth connection 3, in engine compartment wiring harness

609

Earth point, on right in plenum chamber

B303

Positive connection 7 (30), in main wiring harness

D50

Positive connection (30), in engine compartment wiring harness

D75

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

D101

Connection 1, in engine compartment wiring harness

D102

Connection 2, in engine compartment wiring harness

D104

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

Relay and fuse carrier, electronics box plenum chamber

Screw connection in electronics box in plenum chamber

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit

E45

Cruise control system switch

F125

Multifunction switch

J518

Entry and start authorisation control unit

J527

Steering column electronics control unit

J623

Engine control unit

Fuse in relay plate fuse holder

T10c

10-pin connector, pink, coupling station on electronics box, plenum chamber

T10d

10-pin connector, blue, coupling station on electronics box, plenum chamber

T10p

10-pin connector, black, on gearbox

T16a

16-pin connector, on steering column electronics control unit

T20e

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

T46a

46-pin connector, black, CAN disconnector left

T94

94-pin connector, black, on engine control unit

B482

Connection 18 in main wiring harness

D159

Connection (high bus), in engine compartment wiring harness

D160

Connection (low bus), in engine compartment wiring harness

D180

Connection (87a), in engine compartment wiring harness

D181

Connection 2 (87a), in engine compartment wiring harness

•

CAN bus (data wire)

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, coolant temperature sender, fuel temperature sender, fuel pressure sender, injector, cylinder 1, 4, 6 and 7

G62

Coolant temperature sender

G81

Fuel temperature sender

G247

Fuel pressure sender

J623

Engine control unit

N30

Injector, cylinder 1

N33

Injector, cylinder 4

N84

Injector, cylinder 6

N85

Injector, cylinder 7

S15

Fuse in relay plate fuse holder

T60

60-pin connector, black, on engine control unit

T94

94-pin connector, black, on engine control unit

D52

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

Audi Q7	Current Flow Diagram	No. 53 / 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, throttle valve module, air mass meter, accelerator position sender

G70

Air mass meter

G79

Accelerator position sender

G185

Accelerator position sender 2

J338

Throttle valve module

J623

Engine control unit

J843

Interface control unit for vehicle location system

S14

Fuse in relay plate fuse holder

T10e

10-pin connector, green, coupling station on electronics box, plenum chamber

T12z

12-pin connector, brown, on interface control unit for vehicle location system

T60

60-pin connector, black, on engine control unit

T94

94-pin connector, black, on engine control unit

B564

Connection 31 in main wiring harness

D107

Connection 5, in engine compartment wiring harness

for models with interface for special functions

Audi Q7	Current Flow Diagram	No. 53 / 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, Hall sender, oil temperature sender, charge air pressure sender, intake air temperature sender, pressure differential sender

Oil temperature sender

G31

Charge air pressure sender

G40

Hall sender

G42

Intake air temperature sender

G505

Pressure differential sender

J623

Engine control unit

T10z

10-pin connector, white, coupling station on electronics box, plenum chamber

T14m

14-pin connector, black, in engine compartment, bank 1

T60

60-pin connector, black, on engine control unit

T94

94-pin connector, black, on engine control unit

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, engine speed sender, exhaust gas recirculation potentiometer, exhaust gas recirculation control motor

G28

Engine speed sender

G83

Radiator outlet coolant temperature sender

G212

Exhaust gas recirculation potentiometer

J623

Engine control unit

T3i

3-pin connector, grey, on engine speed sender

T6z

6-pin connector, grey, on exhaust gas recirculation control motor

T60

60-pin connector, black, on engine control unit

V338

Exhaust gas recirculation control motor

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, turbocharger control unit, intake manifold flap motor

J623

Engine control unit

J724

Turbocharger 1 control unit

J725

Turbocharger 2 control unit

T10m

10-pin connector, black, coupling station on electronics box, plenum chamber

T60

60-pin connector, black, on engine control unit

T94

94-pin connector, black, on engine control unit

V157

Intake manifold flap motor

281

Earth connection 1, in engine harness

D108

Connection 6, in engine compartment wiring harness

D159

Connection (high bus), in engine compartment wiring harness

D160

Connection (low bus), in engine compartment wiring harness

D178

Connection 2 (high bus), in engine compartment wiring harness

D179

Connection 2 (low bus), in engine compartment wiring harness

•

CAN bus (data wire)

Audi Q7	Current Flow Diagram	No. 53 / 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 control unit, heater element for crankcase breather, fuel pressure regulating valve, fuel metering valve, exhaust gas recirculation cooler change-over valve

J623

Engine control unit

N79

Heater element for crankcase breather

N276

Fuel pressure regulating valve

N290

Fuel metering valve

N345

Exhaust gas recirculation cooler change-over valve

S10

Fuse in relay plate fuse holder

S18

Fuse in relay plate fuse holder

T10m

10-pin connector, black, coupling station on electronics box, plenum chamber

T60

60-pin connector, black, on engine control unit

T94

94-pin connector, black, on engine control unit

281

Earth connection 1, in engine harness

609

Earth point, on right in plenum chamber

D109

Connection 7, in engine compartment wiring harness

D189

Connection (87a), in engine wiring harness

Crankcase 1

Crankcase 2

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, brake light switch, clutch pedal switch, brake pedal switch

Brake light switch

F47

Brake pedal switch

J104

ABS control unit

J508

Brake light suppression relay

J623

Engine control unit

SC5

Fuse 5 on fuse holder C

SC6

Fuse 6 on fuse holder C

SC8

Fuse 8 on fuse holder C

SC11

Fuse 11 on fuse holder C

T10c

10-pin connector, pink, coupling station on electronics box, plenum chamber

T10d

10-pin connector, blue, coupling station on electronics box, plenum chamber

T47a

47-pin connector, on ABS control unit

T94

94-pin connector, black, on engine control unit

377

Earth connection 12, in main wiring harness

664

Earth point, on left behind dash panel

B163

Positive connection 1 (15), in interior wiring harness

B300

Positive connection 4 (30), in main wiring harness

B336

Connection 2 (54), in main wiring harness

relay and fuse carrier centre dash panel

♦

up to May 2007

♦♦

from June 2007

up to May 2008

from June 2008

Audi Q7	Current Flow Diagram	No. 53 / 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, exhaust gas temperature sender 1, temperature sender before particulate filter

G235

Exhaust gas temperature sender 1

G506

Temperature sender before particulate filter

J623

Engine control unit

T10z

10-pin connector, white, coupling station on electronics box, plenum chamber

T14m

14-pin connector, black, in engine compartment, bank 1

T94

94-pin connector, black, on engine control unit

Earth point, lower part of left A-pillar

372

Earth connection 7, in main wiring harness

D110

Connection 8, in engine compartment wiring harness

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, lambda probe, fuel cooling pump relay, fuel cooling pump relay

G39

Lambda probe

J445

Fuel cooling pump relay

J623

Engine control unit

S11

Fuse in relay plate fuse holder

S12

Fuse in relay plate fuse holder

T6r

6-pin connector, black, for Lambda probe

T10m

10-pin connector, black, coupling station on electronics box, plenum chamber

T94

94-pin connector, black, on engine control unit

V166

Fuel cooling pump

Z19

Lambda probe heater

D111

Connection 9, in engine compartment wiring harness

D112

Connection 10, in engine compartment wiring harness

Relay and fuse carrier, electronics box plenum chamber

phased-in modification

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, continued coolant circulation relay, coolant circulation pump, fuel pump relay for auxiliary heater

J151

Continued coolant circulation relay

J255

Climatronic control unit

J623

Engine control unit

J749

Fuel pump relay for auxiliary heater

T6k

6-pin connector, brown, coupling station on electronics box, plenum chamber

T10c

10-pin connector, pink, coupling station on electronics box, plenum chamber

T10d

10-pin connector, blue, coupling station on electronics box, plenum chamber

T16c

16-pin connector, brown, connector C, on Climatronic control unit

T16d

16-pin connector, black, connector D, on Climatronic control unit

T94

94-pin connector, black, on engine control unit

V50

Coolant circulation pump

368

Earth connection 3, in main wiring harness

640

Earth point, left in engine compartment

B537

Connection 28 in main wiring harness

relay and fuse carrier centre dash panel

Relay and fuse carrier, electronics box plenum chamber

Air conditioning system basis

Convenience air conditioning system

###

models with auxiliary heater

Audi Q7	Current Flow Diagram	No. 53 / 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

Engine control unit, radiator fan control unit, radiator fan

J293

Radiator fan control unit

J623

Engine control unit

J671

Radiator fan control unit 2

Fuse in relay plate fuse holder

Fuse in relay plate fuse holder

Fuse in relay plate fuse holder

T10d

10-pin connector, blue, coupling station on electronics box, plenum chamber

T60

60-pin connector, black, on engine control unit

T94

94-pin connector, black, on engine control unit

Radiator fan

V177

Radiator fan 2

671

Earth point 1, on front of left longitudinal member

D166

Connection (K-diagnosis wiring), in engine compartment wiring harness

•

CAN bus (data wire)

models without trailer towing attachment

models with trailer towing attachment

no longer fitted, phased

Audi Q7	Current Flow Diagram	No. 53 / 19

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 2

J624

Engine control unit 2

T60a

60-pin connector, black, on engine control unit 2

T94a

94-pin connector, black, on engine control unit 2

131

Earth connection 2, in engine compartment wiring harness

•

CAN bus (data wire)

no longer fitted, phased

Audi Q7	Current Flow Diagram	No. 53 / 20

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 2, air mass meter 2, Injector for cylinder 2, 3, 5 and 8

G246

Air mass meter 2

J624

Engine control unit 2

N31

Injector, cylinder 2

N32

Injector, cylinder 3

N83

Injector, cylinder 5

N86

Injector, cylinder 8

T60a

60-pin connector, black, on engine control unit 2

T94a

94-pin connector, black, on engine control unit 2

•

CAN bus (data wire)

Audi Q7	Current Flow Diagram	No. 53 / 21

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 2, exhaust gas recirculation potentiometer 2, throttle valve module 2, exhaust gas recirculation control motor 2

G466

Exhaust gas recirculation potentiometer 2

J544

Throttle valve module 2

J624

Engine control unit 2

T60a

60-pin connector, black, on engine control unit 2

V339

Exhaust gas recirculation control motor 2

Audi Q7	Current Flow Diagram	No. 53 / 22

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 2, high pressure sender, pressure differential sender 2, intake manifold flap 2 motor

G65

High pressure sender

G524

Pressure differential sender 2

J255

Climatronic control unit

J624

Engine control unit 2

T10d

10-pin connector, blue, coupling station on electronics box, plenum chamber

T10m

10-pin connector, black, coupling station on electronics box, plenum chamber

T14m

14-pin connector, black, in engine compartment, bank 1

T16d

16-pin connector, black, connector D, on Climatronic control unit

T60a

60-pin connector, black, on engine control unit 2

T94a

94-pin connector, black, on engine control unit 2

V275

Intake manifold flap 2 motor

D113

Connection 11, in engine compartment wiring harness

Audi Q7	Current Flow Diagram	No. 53 / 23

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 2, lambda probe 2, bank 2 exhaust gas temperature sender 1, lambda probe 2 heater, temperature sender 2 before particulate filter

G108

Lambda probe 2

G236

Bank 2 exhaust gas temperature sender 1

G498

Temperature sender 2 before particulate filter

J624

Engine control unit 2

T6s

6-pin connector, brown, for Lambda probe 2

T10z

10-pin connector, white, coupling station on electronics box, plenum chamber

T14m

14-pin connector, black, in engine compartment, bank 1

T94a

94-pin connector, black, on engine control unit 2

Z28

Lambda probe 2 heater

D114

Connection 12, in engine compartment wiring harness

phased-in modification

Audi Q7	Current Flow Diagram	No. 53 / 24

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 pump relay, oil level and oil temperature sender

G266

Oil level and oil temperature sender

J17

Fuel pump relay

S16

Fuse in relay plate fuse holder

S17

Fuse in relay plate fuse holder

SB6

Fuse 6 on fuse holder B

SB7

Fuse 7 on fuse holder B

SB8

Fuse 8 on fuse holder B

T10c

10-pin connector, pink, coupling station on electronics box, plenum chamber

T10f

10-pin connector, red, coupling station on electronics box, plenum chamber

Earth point, centre behind dash panel

378

Earth connection 13, in main wiring harness

B165

Positive connection 2 (15), in interior wiring harness

D115

Connection 13, in engine compartment wiring harness

Relay and fuse carrier, electronics box plenum chamber

♦

up to May 2007

♦♦

from June 2007

Audi Q7	Current Flow Diagram	No. 53 / 25

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, oil pressure switch

Oil pressure switch

F66

Coolant shortage indicator switch

Fuel gauge sender

Fuel gauge

Fuel system pressurisation pump

G23

Fuel pump

G169

Fuel gauge sender 2

J285

Control unit in dash panel insert

J533

Data bus diagnostic interface

Oil pressure warning lamp

K28

Coolant temperature and coolant shortage warning lamp

T4k

4-pin connector, black, under left cover on rear vehicle floor

T4l

4-pin connector, black, on left fuel tank

T4m

4-pin connector, black, on right fuel tank

T5k

5-pin connector, black, under left cover on rear vehicle floor

T10f

10-pin connector, red, coupling station on electronics box, plenum chamber

T20

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

T26b

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

T32a

32-pin connector, grey, on control unit in dash panel insert

Y24

Display in dash panel insert

Earth point, left C-pillar

Earth point, right C-pillar

410

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

•

CAN bus (data wire)

output sender earth

up to May 2008

***

from June 2008

no longer fitted, phased

Wiring diagrams AUDI Audi Q7 4.2 l – TDI, Common Rail (240 kW – 8-cylinder), engine code BTR

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