lights AUDI A6 2005 C5 / 2.G Electrics System Training Manual

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Emergency function
The software for the control unit for on-board power
supply can be used to implement emergency
functions. If a fault is detected in the rotary light
switch or if there is an open circuit in the line to the
rotary light switch, the control unit for on-board
power supply switches the driving light on.
Other functionalities
In addition to the master functions, the following
functions are also available in the control unit for
on-board power supply.
– Steering column adjustment
– Footwell lighting
– Selector gate lighting
– Direction indicator control, front and side
– Signal horn activation
– Windscreen washer pump activation
– Steering column memory
Versi on s
There are three functional versions of the control
unit for on-board power supply:
– Low-Line version (with no electric steering
column adjustment, no xenon, no daytime
driving lights)
– Mid-Line version (with no electric steering
column adjustment, with xenon and daytime
driving lights)
– High-Line version (with electric steering column
adjustment, xenon and daytime driving lights)
Installation position
The control unit for on-board power supply is
installed on the left behind the dash panel. It can be
accessed by removing the footwell cover.
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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).

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The central control unit for the convenience
system J393, with which you may be familiar from
the Audi A8 '03, is used in the Audi A6 ’05. The tasks
and functions have been adapted according to
requirements.
The control unit is a participant on the
CAN Convenience data bus.
Master functions
The master functions of the central control unit for
the convenience system are as follows:
– Direction indicator master
– Central locking master
– Interior lighting master
– LIN master for alarm horn H12 and sensor for
passenger compartment monitoring G273
Other functionalities
In addition to the master functions, other functions
are also available in the central control unit for the
convenience system. The power outputs integrated
in the control unit activate the following loads:
– Back lights
–Rear sun blind
– Rear window heating
– Rear footwell lights
–Boot light
– Tailgate/boot lid release
Ve rs i on s
Two versions of the central control unit for the
convenience system are available:
–Basic
– High-Line (with rear sun blind/anti-theft warning
system/light package for ambient lighting/area
lighting)
Central control unit for convenience system J393
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Installation position
The central control unit for the convenience system
is installed above the battery in the rear right of the
boot.
System overview
Convenience electrics
– Tailgate/boot lid "softtouch"
– Tailgate/boot lid locking cylinder closed
– Brake light switch
– B rake li ght signal from control u ni t fo r ABS with
EDL J104
– Garage door opener (adaptation flashing)– Crash input
– Tailgate/boot lid contact
–Tank plug lock detection (USA)
– Alarm horn H12 (via LIN bus)
– Sensor for passenger compartment
monitoring G273 (via LIN bus)
– Rear footwell lights, left and right
– Boot light
– Motor for rear sun blind V91
– Motor for tank cap locking V155
– Motor for tailgate/boot lid central locking V53
– Interior lighting roof module
– Passenger compartment light
– Alarm horn H12 (via LIN bus)– High-level brake light (LED)
– Tail light, left and right
–Brake light, left and right
– Reversing light, right
–Rear fog light, left
– Number plate light
– Heated rear window Z1
– Rear direction indicator light, left and right
– Level control unit J197
(doors open/closed) The central control unit for the convenience system J393 receives the following input signals:
The central control unit for the convenience system J393 activates the following loads:
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Interior lighting control
Standard equipment function
The standard function includes activating the inside
light in the roof lining, the front footwell lights, the
glove compartment light and the boot light.
The central control unit for the convenience
system J393 activates the inside light in the roof
lining, the boot light and the glove compartment
light directly via its own outputs and inputs. The
control unit for on-board power supply J519
activates the front footwell lights via CAN messages
from the central control unit for the convenience
system J393.
Additional equipment function (light package)
The light package additional equipment also
includes a door contour light in every door as well
as footwell lights (front and rear), which are based
on LED technology. The door contour lighting is
activated by the door control unit, which receives
the CAN messages for this from the central control
unit for the convenience system J393.

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System overview
Convenience electrics
– Power windows switch
– Internal locking switch
– Actuating elements for central locking
– Actuating elements for central locking
(Safe mode)
– Outer door handle switch (optional)
– Central locking button for outer door handle
– Boot release switch E164– Switch for remote unlocking and
filler flap E204
–Child-lock button E318
– Mirror adjustment change-over switch E48
–Mirror adjustment switch E43
– Mirror adjustment switch with
folding function E168
– Switch for alarm system off E217 (optional)
– Switch for passenger compartment monitoring
(optional) E183
Additional signals for front doors
– Operator unit for memory
– Mirror position sensor
Additional loads for driver’s door
– Contact switch in lock barrel
driver’s side F241
– Central locking motors
– Central locking motors (Safe mode)
– Door warning lights
–Entry lights
– Lighting for inside door handle
– Ambient lighting for doors (optional)Additional loads for front doors
– Mirror adjustment motors
– Mirror folding motors
– Heated door mirrors
– Automatic anti-dazzle mirror
– Entry light in door mirror,
driver’s side and passenger’s side
Additional loads for rear doors
–Lamp for rear ashtray lightAdditional loads for driver’s door
– Lock status LED for passenger’s door
– Indicator light for safe central locking
– Indicator light for tilt sensor K188
(optional)
– Indicator light for passenger compartment
monitoring deactivation K162 (optional)
– Indicator light for memory SET
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The door control units receive the following input signals:
The door control units activate the following loads: