Mercedes-Benz ML320. Manual — part 234
GPS
G lobal P ositioning S ystem
System for position finding with
the aid of satellites
GSM
G lobal S ystem for M obile or
also G lobal S tandard of M obile
communication
International standard for mobile
telecommunication.
LW
L ong W ave
Certain relatively low frequency
range within which radio signals
are transmitted (compare UHF and
MW).
MW
M edium W ave
Certain frequency range within
which radio signals are transmitted
(compare UHF and LW).
POI
P oints of I nterest
Locations of geographic or tourist
interest.
PTY
P rogram Ty pe
RDS feature describing the
program contents of the radio
station (pop, culture, classics,)
RDS
R adio D ata S ystem
Standard for transmission of
information via FM radio station
(station name, e.g. SWR3 or
program type (see PTY),)
TCS
T raffic C enter S ervice
Standard for transmission of
traffic information via cellular
telephone network. Presently not
used by Audio 30 APS (status:
3/99)
TMC
T raffic M essage C hannel
Standard for FM / RDS
transmission of traffic
information. Presently not used by
Audio 30 APS (status: 3/99)
TP
Traffic Program
RDS feature. Indicates that the
station tuned in is a traffic station.
UKW
Ultra-high frequency
Certain frequency range within
which radio signals are transmitted
(relatively high frequency,
compare LW and MW).
ZE
Destination entry
Entry of town and street name for
desired trip destination.
ZF
Guidance
Function of navigation system.
Other terms:
Intermediate frequency
The IF signal is required for the
antenna diversity function. With
this function the antenna with the
best reception is automatically
selected on vehicles with a system
of FM antennas. This function is
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
AUDIO 30 APS, FUNCTION - GF82.61-P-0002A
MODEL 163,168,170, 208, 210 with CODE (353) Audio 30 APS
Fig. 42: Identifying Radio And Navigation Unit
The Audio 30 APS has the following functions:
Radio
Performance corresponds to an MB radio in the superior class (3/99)
Navigation system
Performance and function are comparable with the current auto-pilot system (APS) (status 3/99)
Combined CD player for audio and navigation
Audio signal processing and amplification with control of optional units, e.g.:
Amplifier for sound system (N40/3) and CD changer (A2/6)
Digital data bus (D2B) and CAN data bus interface
The system is distinguished by its high degree of integration resulting in optimum compactness. The following
components are integrated into the radio and navigation unit (A2/56) :
CD-ROM drive for navigation and playing audio CD's
Navigation processor including global positioning system (GPS) receiver and gyrosensor
Radio with two-tuner technology
not used presently. (Status: 3/99)
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
4-channel power amplifier for vehicle loudspeakers
System interlinkage
The radio and navigation unit (A2/56) is provided with the following components for data exchange with
external digital components:
CAN (A1 -A2/56)
The radio and navigation unit (A2/56) is connected with the instrument cluster (A1) via a separate
CAN bus. The difference to the other CAN systems is indicated by the spelling CAN bus (A1-A2/56).
The CAN bus (A1-A2/56) allows the following functions:
Operation of the radio and navigation unit (A2/56) is also possible with the multifunction steering
wheel.
The multifunction display (A1/p13) in the instrument cluster (A1) can display navigation
information on the current operating status of the radio and navigation unit (A2/56) .
The connection to the CAN bus (A1-A2/56) is only realized on models 208 and 210. (Status 3/99)
Digital data bus (D2B)
Data can be exchanged between the external audio components, the telephone system and - if present -
the voice control system over the D2B bus. This allows control data as well as the actual audio signals
(e.g. music from CD changer) to be transferred.
The only additional D2B component presently possible is the CD changer (A2/6) (Status: 3/99)
K bus (diagnostic interface)
Data exchange is accomplished between the diagnostic interface and the hand-held tester (reading out
DTCs and actual values, ...).
The communication between the HHT and all other D2B components is accomplished over the radio
and navigation unit (A2/56) diagnostic interface.
Audio 30 APS, location of
components
Model 163
GF82.61-P-0002-01D
Model 168
GF82.61-P-0002-01B
Model 170
GF82.61-P-0002-01A
Model 208, model 210
&.2.(GF82.61-P-0002-
01C)
Audio 30 APS block
diagram
Model 163
GF82.61-P-0002-02D
Model 168
GF82.61-P-0002-02B
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
TABLE OF CONTENTS, FUNCTION DESCRIPTION OF AUDIO 30 APS - GF82.61-P-0998ZZ
MODEL 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS
Model 170
GF82.61-P-0002-02A
Models 208, 210
&.2. (GF82.61-P-0002-
02C)
Audio 30 APS operating
instructions
GF82.61-P-0002-03A
On/Off behavior, function
GF82.85-P-2006B
Navigation mode, function
GF82.85-P-2012B
Radio mode, function
GF82.60-P-2001B
CD player mode, function
GF82.60-P-2002B
Volume and tone settings,
function
GF82.60-P-2003B
Digital data bus (D2B),
function
GF82.00-P-0001A
Radio and navigation unit,
location/purpose/
design/function
GF82.61-P-4109A
Audio 30 APS, function
Models 163, 168,
170, 208, 210
GF82.61-P-0002A
Model 203, 209.3/4 GF82.61-P-0002E
Audio 30 APS location of the
components
Model Series 163
GF82.61-P-0002-
01D
Model 168
GF82.61-P-0002-
01B
Model 170
GF82.61-P-0002-
01A
Models 203, 209.3
GF82.61-P-0002-
01E
Model 209.4
GF82.61-P-0002-
01F
Models 208, 210
GF82.61-P-0002-
01C
Audio 30 APS block diagram
Model Series 163
GF82.61-P-0002-
02D
Model 168
GF82.61-P-0002-
02B
Model 170
GF82.61-P-0002-
02A
Models 203, 209
GF82.61-P-0002-
02E
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
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