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

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MMI Basic
Standard equipment in the new Audi A6 includes
MMI Basic with the MMI operating concept, a
7" monochrome display (J685) in the dash panel
inser t as well as an integrated, analogue radio tuner
and 4x antenna diversity, CD drive and a 2x20-watt
amplifier.
In principle, these drivers are available in all
versions of the control unit for front
information J523.
In the MMI Basic version, the loudspeakers that are
integrated into the front doors are connected
directly to the control unit for front
information J523.
If the Standard Sound System or BOSE option is
installed, this internal amplifier is deactivated via
coding. The loudspeakers are then connected to the
relevant digital sound package control unit J525.Digital tuner technology will be available in the
Audi A6 at a later date. Depending on the market in
question, a satellite radio receiver or a receiver for
terrestrially emitted, but digitally coded
transmissions will then be available.
Legend
The orange symbols represent the possible optional
equipment. If a relevant option is missing, simply
follow the route indicated by arrows to close the
MOST ring.
326_042 Front information
are used
in the tester
J685Multimedia
operating unit
E380Antenna booster
R24Loudspeaker
front
Control unit for front information J523
+ Radio R
+ CD player R89
+ Amplifier R12 (active)Loudspeaker
DSP amplifier
J525
DSP amplifier
BOSE
J525
Loudspeaker
CD changer
R41 Te l e p h o n e
transmitter and
for telephone
R36 Data bus diagnosis
interface
J533Antenna
amplifier 2
R111
Steering column
electronics
J527Multi-function
steering wheel
J453

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Sound systems
Different sound system versions are available for
the new Audi A6 ´05. A general feature of the
systems is the two subwoofers integrated into the
front doors. A central subwoofer is not installed in
the rear storage area in the Audi A6 ’05 – a standard
feature in other model series.
The base frequencies, which cannot be localised for
the human ear, are amplified by the two tuners in
the doors and are used to round off the audio
pattern in the interior of the vehicle. This saves
space in the rear area, which increases the boot
volume and leaves more room for installing other
control units.
326_059
The new Audi A6 ´05 is equipped with a two-way
loudspeaker system in the front doors as standard.
The related amplifier with two 20-watt drivers is
integrated into the control unit for information J523.
Diagnosis of the standard amplifier module is
performed using the address word 47 in the
VAS diagnosis tester. The possible diagnostic
functions are contained in the list of diagnostic
options for the control unit for front information
J523 on page 78 in this chapter.
326_140
Audi A6 ‘05 front door with subwoofer and loudspeaker installation
positions
1 Control unit for front information J523 including
2x20-watt drivers, front display unit J685 and
Multimedia operating unit E380
2 High-pitch loudspeaker, front left R20 and
mid/low-pitch loudspeaker, front left R101
3 High-pitch loudspeaker, front right R22 and
mid/low-pitch loudspeaker, front right R102
1
23

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Standard sound system
If the optional Standard sound system is selected,
the vehicle will not have the 2x20-watt amplifier
module in the control unit for front information
J523. This sound system has an external 7-channel
DSP amplifier, the digital sound system control
unit J525, which is integrated into the MOST bus.
It controls the three-way systems in the front doors,
the two subwoofers in the front doors, the 2-way
systems in the back doors and the centre
loudspeaker in the dash panel. The standard sound
system comes as standard in the MMI versions
Basic Plus and MMI High.
Infotainment
326_073
Reference
Information on the functional features of the
digital sound system can be please refer to the
SSP 293, Audi A8 ´03 – Infotainment.
1 Mid/high-pitch loudspeaker, front left R26
2 Low-pitch loudspeaker, front left R21
3 High-pitch loudspeaker, rear left R14 and
mid/low-pitch loudspeaker, rear left R159
4 Control unit for digital sound package J525
5 Mid/high-pitch loudspeaker, front right R27
6 Low-pitch loudspeaker, front right R23
7 High-pitch loudspeaker, rear left R16 and
mid/low-pitch loudspeaker, rear right R160
1
2
3
45
6
7

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BOSE sound system
The new Audi A6 ´05 comes with a BOSE sound
system, which mainly comprises components from
the current Audi A8 ‘03. The division of the
subwoofer function into two individual subwoofers
integrated into the front doors means that the
well-known 7-channel DSP BOSE amplifier must
provide an additional output for the second
subwoofer driver in the front right-hand door. The
line-out output of the amplifier is used for this
purpose. This output signal feeds an external 100-
watt driver, which is integrated into the subwoofer
in the front right-hand door.
The current BOSE amplifier is replaced by a new
development with the launch of the Avant.
All eight drivers for the BOSE sound system are
then integrated into this new Avant amplifier.
Given this, it will be impor tant to note the exact par t
numbers and the related model year when replacing
components of the BOSE sound system in the
future, so that the functionality of the BOSE sound
system is not lost!
BOSE sound system diagnosis
Diagnosis of the BOSE sound system is also
performed using the address word 47 in the
VAS tester.
A basic setting is not required.
The available actuator tests can be performed either
selectively or sequentially.
The AudioPilot microphone, which is integrated into
the BOSE sound system, can be used to absorb
the acoustic pressure produced during the
loudspeaker actuator tests and output this on the
VAS diagnosis tester as a voltage signal.
If a voice operating system is installed, the
microphone for this is also included in the test.
The technician must then compare this voltage
reading with a default reading set at the factory and
evaluate the completed test as either OK or Not OK.
Infotainment
326_060
1 High-pitch loudspeaker, front left R20
2 Middle-pitch loudspeaker, front left R103
3 Low-pitch loudspeaker, front left R21
4 High-pitch loudspeaker, rear left R14
5 Mid/low-pitch loudspeaker, rear left R159
6 Control unit for digital sound package J525
7 Mid-range/treble loudspeaker, centre, R158
8 Microphone unit in front roof module R164
9 Loudspeaker in parcel shelf R150
10 High-pitch loudspeaker, front right R22
11 Middle-pitch loudspeaker, front right R104
12 Low-pitch loudspeaker, front right R23
13 High-pitch loudspeaker, rear right R16
14 Mid/low-pitch loudspeaker, rear right R160
5 4 3 17
2
98
614 13 12 10
11
Note
Always note the exact part numbers when
replacing components of the BOSE sound
system!