AUDI A6 2005 — 4.2 litre fuel injection engine (220 kW / 250 kW — Motronic — 8-cylinder), engine code ASG . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A6 2005 - Battery - starter - alternator

A	Battery
B	Starter
C	Alternator
C1	Voltage regulator
D	Ignition/starter switch
J31	Automatic intermittent wash/wipe relay
S204	Fuse -1- (30)
S205	Fuse -2- (30)
T3aw	3-pin connector, black, in engine compartment, right
T10o	10-pin connector, brown, connector point, electronics box, plenum chamber
T10p	10-pin connector, black, connector point, electronics box, plenum chamber
1	Earth strap, battery - body
3	Earth strap, engine - body
81	Earth connection -1-, in dash panel wiring harness
A17	Connection (61), in dash panel wiring harness
A41	Positive (+) connection (50), in dash panel wiring harness
*	Models with manual gearbox
**	Models with automatic gearbox

Wiring Diagram AUDI A6 2005 - Motronic control unit - starter inhibitor relay

D	Ignition/starter switch
F125	Multi-function switch
J207	Starter inhibitor relay
J220	Motronic control unit
T9	9-pin connector, brown, at starter inhibitor relay
T10n	10-pin connector, orange, connector point, electronics box, plenum chamber
T17m	17-pin connector, blue, connector point, A pillar, right
12	Earth point in engine compartment, left
85	Earth connection 1, in engine compartment wiring harness
131	Earth connection 2, in engine compartment wiring harness
A2	Positive (+) connection (15), in dash panel wiring harness
D131	Connection (15) via fuse 232, in engine compartment wiring harness
*	Models with automatic gearbox

Wiring Diagram AUDI A6 2005 - Motronic control unit - injectors and ignition coils for cylinders 1 - 4

C6	Coil capacitor
J220	Motronic 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
P	Spark plug connector
Q	Spark plugs
S229	Fuse 29 in fuse box
T10n	10-pin connector, orange, connector point, electronics box, plenum chamber
T17i	17-pin connector, white, connector point, electronics box, plenum chamber
85	Earth connection 1, in engine compartment wiring harness
132	Earth connection 3, in engine compartment wiring harness
D23	Connection (via fuse 229), in front right wiring harness
D106	Connection 4, in engine compartment wiring harness
D131	Connection (15) via fuse 232, in engine compartment wiring harness

Wiring Diagram AUDI A6 2005 - Motronic control unit - injectors and ignition coils for cylinders 5 - 8

C6	Coil capacitor
J220	Motronic control unit
N83	Injector, cylinder 5
N84	Injector, cylinder 6
N85	Injector, cylinder 7
N86	Injector, cylinder 8
N205	Inlet camshaft timing adjustment valve -1-
N208	Inlet camshaft timing adjustment valve -2-
N323	Ignition coil 5 with final output stage
N324	Ignition coil 6 with final output stage
N325	Ignition coil 7 with final output stage
N326	Ignition coil 8 with final output stage
P	Spark plug connector
Q	Spark plugs
131	Earth connection -2-, in engine compartment wiring harness
132	Earth connection -3-, in engine compartment wiring harness
D23	Connection (via fuse 229), in front right wiring harness
D107	Connection -5-, in engine compartment wiring harness
D131	Connection (15) via fuse 232, in engine compartment wiring harness

Wiring Diagram AUDI A6 2005 - Motronic control unit - throttle valve module - accelerator pedal position senders

E3	Hazard warning light switch
G79	Accelerator pedal position sender
G185	Accelerator pedal position sender -2-
G186	Throttle valve drive (electric power control)
G187	Throttle valve drive angle sender -1- (electric power control)
G188	Throttle valve drive angle sender -2- (electric power control)
J220	Motronic control unit
J234	Airbag control unit
J338	Throttle valve control unit
T17i	17-pin connector, white, connector point, electronics box, plenum chamber
T17k	17-pin connector, red, connector point, electronics box, plenum chamber
19	Earth point, near ignition coil
132	Earth connection -3-, in engine compartment wiring harness
A125	Connection (crash signal), in dash panel wiring harness

Wiring Diagram AUDI A6 2005 - Motronic control unit - knock sensor 1 - engine speed sender - coolant temperature senders - Motronic current supply relay

G2	Coolant temperature sender
G28	Engine speed sender
G61	Knock sensor 1
G62	Coolant temperature sender
G66	Knock sensor 2
J220	Motronic control unit
J271	Motronic current supply relay
T3k	3-pin connector, grey, on engine speed sender
T3bc	3-pin connector, green, at knock sensor 1
T3bd	3-pin connector, green, at knock sensor 2
T10o	10-pin connector, brown, connector point, electronics box, plenum chamber
T10p	10-pin connector, black, connector point, electronics box, plenum chamber
139	Earth connection (sender earth), in Motronic wiring harness
220	Earth connection (sender earth), in engine wiring harness
269	Earth connection (sender earth) -1-, in dash panel wiring harness
D50	Positive (+) connection (30), in engine compartment wiring harness
D102	Connection -2-, in engine compartment wiring harness

Wiring Diagram AUDI A6 2005 - Motronic control unit - Hall senders - brake light switch

F	Brake light switch
F36	Clutch pedal switch
F47	Cruise control system brake pedal switch
G40	Hall sender
G163	Hall sender 2
J104	ABS with EDL control unit
J220	Motronic control unit
M9	Brake light bulb, left
M10	Brake light bulb, right
S5	Fuse in fuse box
S7	Fuse in fuse box
S13	Fuse in fuse box
T10n	10-pin connector, orange, connector point, electronics box, plenum chamber
T17f	17-pin connector, black, in 8-point relay carrier, behind driver's storage compartment
T17i	17-pin connector, white, connector point, electronics box, plenum chamber
220	Earth connection (sender earth), in engine wiring harness
A18	Connection (54), in dash panel wiring harness
A52	Positive (+) connection 2 (30), in dash panel wiring harness
E16	Positive (+) connection (5 volts), in Motronic wiring harness
J9	Connection -1- (15a), in ABS wiring harness
*	Models with manual gearbox

Wiring Diagram AUDI A6 2005 - Motronic control unit - secondary air pump relay - activated charcoal filter system solenoid valve 1 (pulsed) - cruise control system switch

E45	Cruise control system switch
J220	Motronic control unit
J299	Secondary air pump relay
N80	Activated charcoal filter system solenoid valve 1 (pulsed)
N112	Secondary air inlet valve
N144	Electro/hydraulic engine mounting solenoid valve, left
N145	Electro/hydraulic engine mounting solenoid valve, right
N156	Intake manifold change-over valve
N261	Intake manifold change-over valve 2
N335	Variable intake manifold change-over valve
S130	Secondary air pump fuse
T17i	17-pin connector, white, connector point, electronics box, plenum chamber
V101	Secondary air pump motor
12	Earth point, in engine compartment, left
A16	Connection (cruise control system), in dash panel wiring harness
A32	Positive (+) connection (30), in dash panel wiring harness
D22	Connection (via fuse 234), in front right wiring harness
*	Models with cruise control system
**	Engine code ASG
***	Engine code ANK (S6 models)

Wiring Diagram AUDI A6 2005 - Motronic control unit - lambda probes - air mass meter

G39	Lambda probe
G70	Air mass meter
G108	Lambda probe 2
J220	Motronic control unit
T4u	4-pin connector, black, for lambda probe 1
T4v	4-pin connector, black, for lambda probe 2
Z19	Lambda probe heater
Z28	Lambda probe 2 heater
131	Earth connection -2-, in engine compartment wiring harness
D22	Connection (via fuse 234), in front right wiring harness

Wiring Diagram AUDI A6 2005 - Motronic control unit - fuel pump relay - lambda probes downstream of catalytic converter

G130	Lambda probe downstream of catalytic converter
G131	Lambda probe 2 downstream of catalytic converter
J17	Fuel pump relay
J220	Motronic control unit
S228	Fuse 28 in fuse box
S232	Fuse 32 in fuse box
S234	Fuse 34 in fuse box
T4s	4-pin connector, green, for lambda probe 1 downstream of catalytic converter
T4t	4-pin connector, brown, for lambda probe 2 downstream of catalytic converter
T10n	10-pin connector, orange, connector point, electronics box, plenum chamber
T10p	10-pin connector, black, connector point, electronics box, plenum chamber
Z29	Lambda probe 1 heater, downstream of catalytic converter
Z30	Lambda probe 2 heater, downstream of catalytic converter
131	Earth connection 2, in engine compartment wiring harness
D22	Connection (via fuse 234), in front right wiring harness

Wiring Diagram AUDI A6 2005 - Motronic control unit - CAN bus - oil level and oil temperature sender

E87	Air conditioning system operating and display unit
G266	Oil level and oil temperature sender
J217	Automatic gearbox control unit
J220	Motronic control unit
T10o	10-pin connector, brown, connector point, electronics box, plenum chamber
T10p	10-pin connector, black, connector point, electronics box, plenum chamber
T17k	17-pin connector, red, connector point, electronics box, plenum chamber
T17m	17-pin connector, blue, connector point, A pillar, right
131	Earth connection 2, in engine compartment wiring harness
A20	Connection (15a), in dash panel wiring harness
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
•	CAN bus (data wire)
*	Models with automatic gearbox

Wiring Diagram AUDI A6 2005 - Engine cooling with radiator fan relay

E87	Control and display unit for air conditioner
F18	Radiator fan thermo-switch
F54	Radiator fan thermo-switch
G65	High pressure sender
J26	Radiator fan relay
J101	Radiator fan 2nd speed relay
N39	Radiator fan series resistor
S42	Radiator fan single fuse
S142	Radiator fan control unit fuse
T17h	17-pin connector, brown, connector point, A pillar, left
V7	Radiator fan
44	Earth point, lower part of left A pillar
193	Earth connection -1-, in radiator fan wiring harness
D155	Connection -1- (air conditioner pressure switch), in engine compartment wiring harness

Wiring Diagram AUDI A6 2005 - Engine cooling with radiator fan control unit

E87	Control and display unit for air conditioner
F18	Radiator fan thermo-switch
F54	Radiator fan thermo-switch
G65	High pressure sender
J293	Radiator fan control unit, in engine compartment, front left
S42	Radiator fan single fuse
T2by	2-pin connector, on radiator fan control unit
T6ao	6-pin connector, on radiator fan control unit
T17h	17-pin connector, brown, connector point, A pillar, left
V7	Radiator fan
V177	Radiator fan -2-
193	Earth connection -1-, in radiator fan wiring harness
D167	Connection (radiator fan stage I), in engine compartment wiring harness

Wiring Diagram AUDI A6 2005 - Dash panel insert - fuel pump - fuel gauge

G	Fuel gauge sender
G1	Fuel gauge
G6	Fuel pump (pre-supply pump)
G169	Fuel gauge sender -2-
G237	Fuel gauge sender -3-
J285	Control unit with display in dash panel insert
K2	Alternator warning lamp
T10f	10-pin connector, brown, connector point, A pillar, left
T10ba	10-pin connector, blue, connector point, A pillar, left
T16a	16-pin connector, diagnosis connection
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
86	Earth connection -1-, in rear wiring harness
269	Earth connection (sender earth) -1-, in dash panel wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
*	Models with front-wheel drive
**	Models with four-wheel drive
***	Wiring in fuel tank
#	Sender earth output

Wiring Diagram AUDI A6 2005 - Dash panel insert

F1	Oil pressure switch
F66	Coolant shortage indicator switch
G3	Coolant temperature gauge
G5	Rev. counter
G21	Speedometer
G22	Speedometer sender (Hall sender, on gearbox)
J285	Control unit with display in dash panel insert
K3	Oil pressure warning lamp
K28	Coolant temperature/coolant shortage warning lamp
K83	Fault warning lamp for self-diagnosis/exhaust emissions
K132	Electronic power control fault lamp
T10p	10-pin connector, black, connector point, electronics box, plenum chamber
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
131	Earth connection -2-, in engine compartment wiring harness
A108	Connection (speed signal), in dash panel wiring harness