2005 AUDI A6 parking

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18 Rotation rate sensor 202
19 Door control unit, passenger's side J387
20 Control unit for seat adjustment with memory,
passenger’s side, J521
21 Door control unit, rear right J389
22 Transmitter unit in wheel well for tyre pressure
monitoring, rear left G433
23 Radio receiver for auxiliary heating R64
24 Control unit for navigation with CD drive J401
Control unit for voice input J507
Digital sound package control unit J525
Radio R
TV tuner R78
Digital radio R147 25 Transmitter unit in wheel well for tyre pressure
monitoring, rear right G434
26 Parking aid control unit J446
Control unit for trailer detection J345
27 Central control unit for convenience system J393
28 Control unit for electric parking and
hand brake J540
29 Control unit for power management J644
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Bus topology
Overview
NOX sensor
J583
Rotation rate sensor
G202
Seat occupied
recognition
J706
Power module
for left headlight
J667
Power m odule for
right headlight
J668
Level control
J197 Electric parking
and hand brake
J540 Headlight range
control
J431 Automatic
transmission
J217 Airbag
J234 ABS with EDL
J104 Engine electronics 1
J623 Diagnosis connection
T16Control unit in dash
panel insert
J285Distance control
J428
Data bus diagnosis
for data bus
J533
Door control unit,
driver’s side
J386
Door control unit,
passenger’s side
J387
Door control unit,
rear left
J388
Door control unit,
rear right
J389
Seat adjustment
with memory
Steering column
adjustment
J136
Seat adjustment
with memory,
passenger’s side
J521
Trailer detection
J345
Steering column
electronics
J527
Multi-function
steering wheel
J453 Steering-angle
sensor
G85Power management
J644
Auxiliary heating
J364
Parking aid
J446
On-board power
supply 2
J520
Access and
start authorisation
J518
On-board power
supply
J519
Centr. contr. unit for
convenience system
J393
Climatronic
J255
Tyre pressure
monitoring
J502

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External lights
Front headlights
Three different front headlights are used in the
Audi A6 ’05:
– Halogen headlights
–Bi-xenon headlights
–Adaptive light
Halogen headlights
Halogen headlights come as standard.
The following lamps are fitted in the halogen on the
vehicle equipment:
– W5W lamp for parking light
– H1 lamp for high beam headlight and headlight
flasher
– H7 lamp for dipped beam headlight and dimmed
as a daytime driving light
– An orange PY21W bulb as the direction indicator
light
The daytime driving light in the halogen headlight is
only available for Canada and the Northern
countries (Scandinavia). It is active when
terminal 15 is switched on and the parking light or
dipped beam light is off.
The following country-specific variants exist:
– The daytime driving light is part of the fog lights
for Canada and
– 3457NA flasher lamps are used for USA and
Canada.
A manual headlight range control system – with
potentiometer – is installed for halogen headlights.
Convenience electrics
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12 3 4 5
1W5W lamp
2H1 lamp
3H7 lamp
4 PY21W lamp
5D2S lamp

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Bi-xenon headlights
Bi-xenon headlights are installed with the
"XenonPlus" option.
The following lamps are fitted in the bi-xenon
headlight:
– A blue W5W lamp for the parking light.
The colour of the parking light thus corresponds
to the xenon light.
– A D2S lamp for high beam headlight, headlight
flasher and dipped beam headlight. The covers
fo r d i p p ed b e am a re al s o a c t i v at e d fo r h i gh b ea m
and headlight flasher operation.
– A P21W lamp for the daytime driving light.
This comes on dimmed to 90 %.
– A PY21W bulb coated with a reflecting layer of
silver is used as the direction indicator light.
Only longlife lamps are used. A super-longlife
lamp is used as the daytime driving light.
The following country-specific variants exist:
– No daytime driving lamp is fitted for Japan.
– 3457NA flasher lamps are used for USA and
Canada.
The headlights are changed over to left-hand drive
via a lever on the projection module.
A dynamic headlight range control system is
installed for bi-xenon headlights.
The dynamic headlight range control system uses
the well-known level sensors. This send the
information about the vehicle level to the control
unit for headlight range control J431 via a pulse
width-modulated signal.
The same level sensor is fitted on both the front and
rear axle.
Headlights are also available with dynamic
corner-sensitive lights.
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Function diagram
Legend
E493 Operating button for dash panel insert
F1 Oil pressure switch
F34 Warning contact for brake fluid level
E66 Switch for low coolant display
F77 Warning contact for windscreen washer level
G Sender for fuel level indicator
G6 Pre-feed fuel pump
G17 Temperature sensor for outside temperature
G34 Sensor for brake pad wear, front left
G35 Sensor for brake pad wear, front right
G169 Fuel level sensor 2*
G266 Oil level and oil temperature sensor
J17 Fuel pump relay
J285 Control unit in dash panel insert
J489 Receiver for radio clock
J533 Data bus diagnosis interface
J540 Control unit for electric parking and
hand brake
* only for vehicles with quattro drive
326_037
Additional signal
1 Terminal 58d
2 Terminal 58s

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Function diagram
Convenience electrics
E1 Light switch
E3 Hazard warning light switch
E7 Fog light switch
E18 Switch for rear fog light
F4 Reversing light switch
F266 Contact switch for bonnet
G357 Sender for vertical steering column adjustm.
G358 Sender for axial steering column adjustment
G397 Sensor for rain and light detection
G474 Sensor for pivot module position, left
G475 Sensor for pivot module position, right
H2 High-pitch horn
H7 Low-pitch horn
J4 Relay for dual-pitch horn
J400 Control unit for wiper motor
J431 Control unit for headlight range control
J519 Control unit for on-board power supply
J667 Power module for left headlight
J668 Power module for right headlightK4 Indicator light for parking light
K6 Indicator light for hazard warning lights
K13 Indicator light for rear fog light
K17 Indicator light for fog lights
L9 Lamp for light-switch lighting
L13 Gas discharge light, left
L14 Gas discharge light, right
L22 Lamp for left fog light
L23 Lamp for right fog light
L174 Lamp for daytime driving light, left
L175 Lamp for daytime driving light, right
M1 Lamp for parking light, left
M3 Lamp for parking light, right
M5 Lamp for direction indicator light, front left
M7 Lamp for direction indicator light, front right
M18 Lamp for side direction indicator light, left
M19 Lamp for side direction indicator light, right

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System overview
Convenience electrics
– Hall sender 1 for vertical adjustment of the
steering column
– Hall sender 2 for axial adjustment of the
steering column
– Bonnet switch for anti-theft warning system–Rotary light switch
–Hazard warning button
– Switch for reversing light (manual transmission)
– Sensor for rain and light detection (via LIN bus)
– Front direction indicator lights, left and right
– Side direction indicator lights, left and right
– Front parking light, left and right
– Dipped beam headlight, left and right
– High beam headlight, left and right
– Fog lights, left and right
– Relay for headlight cleaning system
– Windscreen washer pump
– Control unit for wiper motor (via LIN bus)– Supply, terminal 58
– Front footwell lights, left and right
– Relay for dual-pitch horn
– Steering column adjustment (vertical/axial)
– Selector lever lighting
– Indicator light for hazard warning lights
– Magnets for cover adjustment
Headlights (left and right)
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The control unit for on-board power supply J519 evaluates the following input signals:
The control unit for on-board power supply J519 controls the following loads:

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Diagnosis
Basic settings
After the control unit for on-board power
supply J519 or the steering column or the switch for
steering column adjustment E167 is replaced, a
basic setting in axial and vertical position must be
implemented for the steering column.
Actuator test
An actuator test can be used to carry out the
following checks:
– Indicator light for hazard warning lights K6
– Lamp for parking light, left M1
– Lamp for parking light, right M3
– Lamp for dipped beam headlight, left M29
– Lamp for dipped beam headlight, right M31
– Lamp for high beam headlight, left M30
– Lamp for high beam headlight, right M32
– Lamp for left fog light L22
– Lamp for right fog light L23
– Lamp for daytime driving light, left L174
– Lamp for daytime driving light, right L175
– Direction indicator lights, left
– Direction indicator lights, right
– Footwell light, left W9
– Footwell light, right W10
– Wiper, top turning position
– Wiper, bottom turning position
– Windscreen washer pump V5
– Relay for dual-pitch horn
–Terminal 58
Coding
The control unit for on-board power supply J519 can
be coded for the functions
–Daytime driving light,
– Driving light assistant,
– Headlight type,
– Footwell lighting and
–Country versions
using the diagnosis tester.
Note
The actuator test can be performed either
sequentially (in sequence) or selectively
(individual selection).