wiring MERCEDES-BENZ ML320 1997 Complete Manual PDF

Short-circuit resistance
Zero potential connection of components
No oxidation
Low weight of fiber optical cable
Minimum diameter of wiring harness
The digital data bus (D2B) has a closed ring structure. The communication and data components are arranged
here in a distributor line (in-series circuit). This arrangement is type specific and is illustrated by way of an
example on model 220 as follows:
Radio (A2)
CD player with changer (in trunk) (A2/6), with code (819) 6-disc CD changer
Sound amplifier (A2/13), with code (810) Sound System
Voice control system control unit (A35/11), with code (813) voice control system (VCS)
Telephone and TELE AID transmitter/receiver, D2B (A35/17), with code (855) TELE AID
Data transfer is conducted here in one direction only, i.e. the optical pulses for the voice control system control
unit (A35/11), for vehicles with code (813) voice control system (VCS), on model 220 pass through all
components connected to the ring, before arriving at the target components.
When the system is first put into operation, a system test is performed. In doing so the individual components
and their sequence in the ring structure of the Digital Data Bus (D2B) are registered by the component with the
master function.
A type-specific sequence is stored ex-factory. In turn, the storing of a sequence ex-factory means: if the radio
(A2) is taken from one model series and installed into another one, then during a system test the different
sequence of the components and an error message are filed in the diagnostic trouble code memory.
An error message is also filed if the radio (A2) is exchanged within a model series with different equipment
components. The system goes to the operational state regardless of the error message. STAR DIAGNOSIS
enables the sequence of the components to be subsequently altered in the Digital Data Bus (D2B).
The Digital Data Bus (D2B) is diagnosis capable via the data link connector (X11/4), except for models 129
and 202.
The operating principle of the Digital Data Bus (D2B) is the same for all model series; all that changes is the
sequence of components depending on the national version and equipment specification.
TABLE OF CONTENTS, FUNCTION DESCRIPTION OF DIGITAL DATA BUS (D2B) - GF82.00-P-0999ZZ
MODEL 129 as of 1.6.98, 163, 168 as of 1.9.98, 170, 202 as of 1.6.98, 203, 208, 210 as of 1.6.98, 215, 220
Data transfer, function GF82.00-P-2000A

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1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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MODEL 163 with CODE (259) Radio Premium with Bose sound system
Parts ordering notes
PROGRAM CHANGE ALTHOUGH RDS [RADIO DATA SYSTEM] AND REGIONALIZATION ARE SWITCHED ON -
AF82.60-P-1062A
MODEL 129, 140, 163, 168, 170, 171, 202, 203, 208, 209, 210, 211, 215, 220, 230, 463 with RDS radio
Damage codeCauseRemedy
Speaker wires picking up
interference noise from
surrounding wiring1 Remove radioAR82.60-P-7502EA
2 Remove upper center
console storage
compartment
3 Remove lower dash
panel below steering
columnAR68.10-P-1500GH
4 Install sound system
jumper harness
AF82.60-P-1010-01AG
5 Reinstall in opposite
order
Part no.DesignationQuantity
163 540 98 05Jumper harness for Bose sound
system1
Damage codeCauseRemedy
Station change without
obvious cause.
Some radio stations
which had originally
transmitted regional
identification have been
transmitting the RDS
signals without regional
identification for some
time.
Without regional
identification it is no
longer possible to
separate stations with the
same station name which
transmit different
programs.1 Point out the facts to
the customer.
Do not replace any
devices, state of the art
engineering.

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SELF-DIAGNOSTIC SYSTEM
INTERIOR LIGHTS DIAGNOSIS CONTENTS - AD82.20-P-1000GHZ
MODEL 163
INTERIOR LIGHTS DIAGNOSIS PREVIOUS KNOWLEDGE - AD82.20-P-2000GH
MODEL 163
INTERIOR LIGHTS DIAGNOSIS OPERATIONAL CHECK - AD82.20-P-3000GH
menu and ensure that
software status 04/03 is
available.
11 Complete DAS and
finish STAR-
DIAGNOSIS.
A2.20 [] 11bInterior lighting
diagnosis, previous
knowledge AD82.20-P-2000GH
A2.2 [] 12bInterior lighting
diagnosis, function check AD82.20-P-3000GH
A2.2 [] 14bInterior lighting
diagnosis, troubleshooting AD82.20-P-5000GH
A2.2 [] 21bInterior lighting
diagnosis, testing
electrical system AD82.20-P-6000GH
Function description,
interior lighting GF82.20-P-0002GH
Location of components,
interior lighting GF82.20-P-0002-01GH
Electric wiring diagram,
interior lighting PE82.20-P-2000G
Inter-function groups of
wiring diagrams PE00.19-P-1100E
Connection and use of
test equipment AD00.00-P-1000AZ
Diagnostic tools, interior
lighting AD54.21-P-2000-01GH
Assignment of coupling
on door separation points AD72.29-P-2000-03GH

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WIPER SYSTEM DIAGNOSIS PREVIOUS KNOWLEDGE - AD82.30-P-2002GH
MODEL 163
WIPER SYSTEM DIAGNOSIS OPERATIONAL CHECK - AD82.30-P-3002GH
MODEL 163
Risk of injury due to
getting jammed or
crushed in extreme cases
due to limbs being
severed by coming into
contact with the
windshield wiper
mechanismAlways remove the
ignition key when
working on the
windshield wiper
mechanism.AS82.30-Z-0001-01A
Location of components,
front screen wiper system GF82.30-P-0005-01GH
Location of components,
rear screen wiper system GF82.30-P-0004-01GH
Function description,
wiper system GF82.30-P-0003GH
Electric wiring diagram,
wiper system PE82.30-P-2000F
Inter-function groups of
wiring diagrams PE00.19-P-1100E
Connection and use of
test equipment AD00.00-P-1000AZ
Diagnostic tools, wiper
system AD54.21-P-2000-01GH
Location of components, wiper
systemRear screen wiper
system&(GF82.30-P-0004-
01GH)
Front screen wiper
system&(GF82.30-P-0005-
01GH)
Wiper system diagnosis, previous
knowledge AD82.30-P-2002GH
Prerequisites for function check
IBattery voltage 11-14V
IIFuses in order
IIIAAM voltage supply in order AD54.21-P-6000-
01GH
IVIgnition (terminal 15) ON
Function check
Scope of test Operation/requirement Specified value Possible cause/

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MB Radio Audio 30 RDS
as of 06/98GF82.60-P-0001-02P
MB Audio 30 APS radioGF82.61-P-0002-03A
MB Radio Audio 10 RDS
as of 07/99GF82.60-P-0001-02T
Location and assignment
of cables and connectorsModel 168GF00.19-P-1000GC
Model 170GF00.19-P-1000B
Summary of electric
wiring diagramsModel 208PE82.00-P-1100D
Model 202PE82.00-P-1100D
Model 163PE82.00-P-1100E
Model 168PE82.00-P-1100GC
Model 170PE82.00-P-1100B
Model 210PE82.00-P-1100A
Model 202 up to 05.97
and models 124, 129, 140Group 82
Connection and use of
test equipment AD00.00-P-1000AZ
Tools, testing electrical
system, radio (RD) AD82.60-P-2000-01A
Radio connections,
testing electrical system,
radio (RD)MB radio in models 129,
168, 170, 202, 208, 210
up to 05/98 and models
140, 163AD82.60-P-2000-02A
MB APS radio and
navigation operating unit
in models 129, 140, 210
up to 12/97AD82.60-P-2000-02B
MB APS radio and
navigation operating unit
in models 129, 140, 202,
210 as of 01/98AD82.60-P-2000-02C
MB radio code 750a, 753,
756a in models 129, 168,
170, 202, 208, 210 as of
06/98AD82.60-P-2000-02D
MB APS radio and
navigation operating unit
in models 168, 170AD82.61-P-2001-02A
Adjusting radio and
navigation operating unit
to loudspeaker system,
testing electrical system,
radio (RD)MB APS radio and
navigation operating unit
in models 129, 140, 210
up to 12/97AD82.60-P-2000-03A

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AUDIO 30 APS DIAGNOSIS, FUNCTION CHECK - AD82.61-P-3001A
MODEL 163,168,170, 208, 210 with CODE (353) Audio 30 APS
notes
Audio 30 APS location of
componentsModel 163GF82.61-P-0002-01D
Model 168GF82.61-P-0002-01B
Model 170GF82.61-P-0002-01A
Models 208, 210GF82.61-P-0002-01C
Location and assignment
of cable and plug
connectionsModel 163GF00.19-P-1000E
Model 168GF00.19-P-1000GC
Model 170GF00.19-P-1000B
Model 208GF00.19-P-1000D
Model 210GF00.19-P-1000A
Overview of electrical
wiring diagramsModel 163PE82.00-P-1100E
Model 168PE82.00-P-1100GC
Model 170PE82.00-P-1100B
Model 208PE82.00-P-1100D
Model 210PE82.00-P-1100A
Connection and use of
test equipment AD00.00-P-1000AZ
Diagnostic tools, Audio
30 APS AD82.61-P-2001-01A
Variant coding, radio and
navigation unit AD82.61-P-2001-03A
Connector assignment,
radio and navigation unit AD82.61-P-2001-02A
Audio 30 APS diagnosis, basic
knowledge AD82.61-P-2001A
See specified diagnosis
manuals for function checks on
the following systems: radio
(RD), AM/FM antenna systems
(ATS) and loudspeaker system
(LSA).
Fuses okay
Battery voltage 11-14 V
Function check
Scope of test Action/prerequisites Nominal value Possible cause /

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DIAGNOSTIC TOOLS, LOUDSPEAKER SYSTEM (LS) - AD82.62-P-2001-01A
Fig. 134: Identifying Electrical Connecting Set (201 589 00 99 00)
Commercially available tools
03C
Model 163GF82.62-P-0001-
03D
Model 210.0GF82.62-P-0001-
03H
Wiring diagramsMODEL 202 up to 31.05.97, group 82
Models 202, 208 from 01.06.97PE82.00-P-1100D
Model 168PE82.00-P-1100GC
Model 163PE82.00-P-1100E
Model 210PE82.00-P-1100A
Connecting and
using test
equipment AD00.00-P-
1000AZ
Tooling diagnosis,
antenna system
(AS) AD82.62-P-2000-
01A
Checking chart for
ASMODEL 208 except 208.4AD82.62-P-2000-
02A
MODELS 202.01/02/12 as of 01.01.97
MODELS
202.078/080/083/182/188/210.2AD82.62-P-2000-
02B
Model 168AD82.62-P-2000-
02C
Model 163AD82.62-P-2000-
02D
Model 210.0AD82.62-P-2000-
02F
NumberDesignation
WH58.30-Z-1001-09AMultimeter
WH58.30-Z-1006-09AFunction generator

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COUPLING ASSIGNMENT ON RADIO FOR LOUDSPEAKER SYSTEM (LS) - AD82.62-P-2001-02A
All MB radios
Coupling B
Fig. 135: Identifying Coupling Assignment On Radio For Loudspeaker System (LS)

LOUDSPEAKER SYSTEM (LS) DIAGNOSIS, ADVANCED INFORMATION - AD82.62-P-2001A
MODEL 163 with CODE (491) U.S. version with CODE (259) Radio Premium with Bose sound system
MODEL 163 with CODE (259a) Radio ML 10 with sound system except CODE (491) U.S. version
MODEL 208 with CODE (810) Sound system with MB radio
LOUDSPEAKER SYSTEM (LS) DIAGNOSIS, ADVANCED INFORMATION - AD82.62-P-2001B
MODEL 163 with CODE (491) U.S. version with CODE (257) Radio Hi-Line
Loudspeaker system
(LS), location of
componentsModel 208GF82.62-P-0002-01A
Model 163GF82.62-P-0002-01E
Electric wiring diagram,
radio with sound systemModel 208PE82.00-P-1100D
Model 163PE82.00-P-1100E
Connection and use of
test equipment AD00.00-P-1000AZ
Diagnostic tools,
loudspeaker system (LS) AD82.62-P-2001-01A
Coupling assignment on
radio for loudspeaker
system (LS) AD82.62-P-2001-02A

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MODEL 163 with CODE (257a) Radio ML 5 except CODE (491) U.S. version
MODEL 168, 208 with MB radio
AM AND FM WAVE BANDS, DIAGNOSIS, FUNCTION CHECK, AS - AD82.62-P-3000-01A
Function check
Set radio as follows: Set station with poor reception (music) and fader, bass, treble and balance in
position 0 (shown in display).
Check AM and FM wave bands by driving in a circle in a yard (open-air grounds) to establish the
reception quality.
Possibly repeat the test with an identical vehicle for comparison.
It is absolutely essential to perform the comparison measurement at the same location and with the same
station setting .
Repeat the test after replacing a component.
ANTENNA SYSTEM (AS) DIAGNOSIS, FUNCTION CHECK - AD82.62-P-3000A
MODELS 163, 168, 202.078 /080 /083 /182 /188, 208 (except, 208.4), 202.01 /02/12 as of 1.1.97, 210.0 /2
Loudspeaker system
(LS), location of
componentsModel 208GF82.62-P-0002-01B
Model 168 ModelGF82.62-P-0002-01C
163GF82.62-P-0002-01D
Electric wiring diagramsModel 208PE82.00-P-1100D
Model 168PE82.00-P-1100GC
Model 163PE82.00-P-1100E
Connection and use of
test equipment AD00.00-P-1000AZ
Diagnostic tools,
loudspeaker system (LS) AD82.62-P-2001-01A
Coupling assignment on
radio for loudspeaker
system (LS) AD82.62-P-2001-02A
Antenna system (AS)
diagnosis, previous
knowledge AD82.62-P-2000A
Operational check
Test of Operation /
Requirement Specified value possible cause/ Remedy

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CD PLAYER WITH CHANGER (CDC) DIAGNOSIS, FUNCTION CHECK - AD82.64-P-3000A
MODEL 124,163,168, 202, 208, 210 with CODE (819) 6-disk CD changer in trunk
MODEL 129 as of 1.6.98 with CODE (819) 6-disk CD changer in trunk
MODEL 638 with CODE (EP5) CD changer
location
Wiring diagramsModels 202, 208 as of
06/97PE82.00-P-1100D
Model 210PE82.00-P-1100A
Model 163PE82.00-P-1100E
Model 168PE82.00-P-1100GC
Models 124, 129 and
Model 202 up to 05/97,
Group 82
Connecting and using test
equipment AD00.00-P-1000AZ
Tools for checking the
electrical system, CD
player with changer AD82.64-P-2000-01A
CD player with changer,
connectionsModels 202, 208, 210 up
to 05/98 and Models 124,
168AD82.64-P-2000-02A
Model 163AD82.64-P-2000-02B
Models 129, 202, 208,
210 as of 06/98AD82.64-P-2000-02C
CD changer (CDC) diagnosis,
previous knowledgeModels 124, 129,
163, 168, 202, 208,
210AD82.64-P-2000A
Model 638: DMNL
Vito/V-class, CDCAD82.64-S-2000A
Battery voltage 11 - 14 V
Fuses okay
Radio in order
CD magazine of changer fitted
with satisfactory CDs free
from protective film

Function check
Scope of test Operation/Requirement Specified value Possible cause/
Remedy
1 Radio: ON CD operation must be AD82.64-P-5000A

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