Page 1718 of 4133

RADIO AND NAVIGATION UNIT, POWER SUPPLY, CHECKING ELECTRICAL SYSTEM, AUDIO 30 APS - AD82.61-P-
6001-01A
Radio and navigation unit
(A2/56)
No reception of GPS
data Antenna cable or
Model 163:
Cellular telephone and GPS
roof antenna (A2/49) or
cellular telephone and GPS
antenna splitter (A2/57)
Models 168, 208.3, 210:
Cellular telephone and GPS
roof antenna (A2/49)
Models 170, 208.4:
GPS rear antenna
(A2/23a2)
Radio and navigation unit
(A2/56) On model 163 only
one antenna cable (for
telephone and GPS)
leads to A2/49. A
defective antenna cable
would therefore effect a
telephone, if connected.Model 163
AD82.61
-P-6001-05B
Models 168,
170,208,210
AD82.61-P-6001-05A
Radio or loudspeaker
functional faults and poor
sound with voice output Loudspeaker system or
amplifier outputs of radio
and navigation unit
(A2/56). Only with sound
system (code 810):
Left/right audio power
amplifier (N40/3)Antenna amplifier test
can be carried out using
HHT.Refer to DMNL
information /
communication
Index 3 (RD)
Index 5 (LS)
Voice output is
fragmentary or
inoperative, but audio
signal replay (e.g. CD
player) functions without
complaint.Voice in RAM of
navigation computer is
partly erased as a result of
an interruption in voltage
supply.
Data fault on navigation
CD-ROM
Radio and navigation unit
(A2/56) Avoid excessive
shaking while loading
voice on A2/56.Replace CD-ROM
Illumination of radio and
navigation unit (A2/56)
inoperative (with terminal
58d, ON)Terminal 58d signal is not
on radio and navigation
unit (A2/56) .
On models 208, 210,
terminal 58d is not
connected, because A2/56
is connected to A1 via
CAN. AD82.61-P-6001-06A
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 223 © 2006 Mitchell Repair Information Company, LLC.
Page 1739 of 4133

CD PLAYER WITH CHANGER (CDC) DIAGNOSIS, CONTENTS - AD82.64-P-1000AZ
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
TOOLS, TESTING ELECTRICAL SYSTEM, CD PLAYER WITH CHANGER - AD82.64-P-2000-01A
switch off radio.
Testing
1Amplifier control module,
testing electrical system of
LSSpannungsversorgungAD82.62-P-6001-
01C
2Amplifier control module,
testing electrical system of
LSLoud Speaker SignalAD82.62-P-6001-
01D
3Loudspeaker, testing
electrical system of LSLeft rear DoorAD82.62-P-6001-02S
4Loudspeaker, testing
electrical system of LSRight rear DoorAD82.62-P-6001-
02T
5Loudspeaker, testing
electrical system of LSLeft front doorAD82.62-P-6001-
02U
6Loudspeaker, testing
electrical system of LSRight Front DoorAD82.62-P-6001-
02V
7Acoustimass (R) bass
module, testing electrical
system of LSBabboxAD82.62-P-6001-
04A
I 6.1 [] 11CD player with changer
(CDC) diagnosis,
advanced information AD82.64-P-2000A
I 6.1 [] 12CD player with changer
(CDC) diagnosis,
function check AD82.64-P-3000A
I 6.1 [] 13CD player with changer
(CDC) diagnosis, fault
memoryModels 129, 202, 208,
210 as of 01.06.98 with
CODE (819) 6-disk CD
changer in trunk and
digital data bus (D2B)AD82.64-P-4000A
I 6.1 [] 14CD player with changer
(CDC) diagnosis,
troubleshooting AD82.64-P-5000A
I 6.1 [] 21CD player with changer
(CDC), testing electrical
system AD82.64-P-6000A
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 244 © 2006 Mitchell Repair Information Company, LLC.
Page 1740 of 4133
Special tools
Fig. 150: Identifying Electrical Connection Set (201 589 00 99 00)
Commercially available tools
CD PLAYER WITH CHANGER CONNECTIONS - AD82.64-P-2000-02B
Model 163
Model 163:
Coupling assignment
Fig. 151: Identifying CD Player With Changer Connections
CD PLAYER WITH CHANGER (CDC), DIAGNOSIS, PREVIOUS KNOWLEDGE - AD82.64-P-2000A
MODELS 124,163,168, 202, 208, 210 with CODE (819) 6-disc CD changer
MODELS 129 as of 1.6.98 with CODE (819) 6-disc CD changer
NumberDesignation
WH58.30-Z-1001-09AMultimeter
CD player with changer,
locationModels 124, 129, 168,
202, 208, 210GF82.64-P-3113-01D
CD player with changer, Model 163GF82.64-P-3113-01GI
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 245 © 2006 Mitchell Repair Information Company, LLC.
Page 1741 of 4133

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
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 246 © 2006 Mitchell Repair Information Company, LLC.
Page 1742 of 4133

CD PLAYER WITH CHANGER (CDC) DIAGNOSIS, TROUBLESHOOTING - AD82.64-P-5000A
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
VOLTAGE SUPPLY, TESTING ELECTRICAL SYSTEM, CD CHANGER - AD82.64-P-6000-01B
Model 163
faultless
Function of CD
changer in
accordance with radio
operating instructionsAdjust loudness on radio
Perform all operating functions of
CD changer Models 129, 202,
208, 210 with digital
data bus (D2B): ?
AD82.64-P-4000A
CD player with changer
(CDC) diagnosis, advanced
information AD82.64-P-2000A
Troubleshooting
Complaint Possible cause Note Remedy
CD player with changer
(A2/6) completely
inoperativeVoltage supply of CD
player with changer (A2/6)Models 202, 208, 210 up
to 05/98 and models
124, 168
Model 163
Models 129, 202, 208,
210 as of 06/98AD82.64-P-6000-01A
&.3.2.( AD82.64
-P-
6000-01B) AD82.64-P-
6000-01C
CD player with changer
(A2/6), does not load or
eject CDsSingle CDs with adapter
loaded in CD magazine
Adhesive foil on CD has not
been removed Voltage
supply of CD player with
changer (A2/6)Models 202, 208, 210 up
to 05/98 and models
124, 168
Model 163
Models 129, 202, 208,
210 as of 06/98AD82.64-P-6000-01A
&.3.3.( AD82.64
-P-
6000-01B) AD82.64-P-
6000-01C
CD player with changer
(A2/6) does not respond
to controlsCD player with changer
(A2/6) Radio (A2) AD82.64-P-6000-02A
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 247 © 2006 Mitchell Repair Information Company, LLC.
Page 1743 of 4133

Fig. 152: Voltage Supply, Testing Electrical System, CD Changer
OPERATING FUNCTION, TESTING ELECTRICAL SYSTEM, CD PLAYER WITH CHANGER - AD82.64-P-6000-02A
Model 124, 129, 163, 168, 202, 208, 210
CD PLAYER WITH CHANGER (CDC), TESTING ELECTRICAL SYSTEM - AD82.64-P-6000A
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
Scope of
testMeasuring
instrument/
Test
connectionOperation/RequirementSpecified
valuePossible
cause/Remedy
1.0 CD player
with
changer
(A2/6)
Operating
function
Model 124,
129, 163,
168, 202,
208, 210 Remove CD changer.
Disconnect and reconnect
coupling.
Ignition and radio: ON Operation is
possible
againCables
CD player with
changer (A2/6)
CD changer (CDC) diagnosis,
advanced information AD82.64-P-2000A
Switch off radio for
disconnecting and
connecting connectors
on the radio and CD
changer.
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 248 © 2006 Mitchell Repair Information Company, LLC.
Page 1747 of 4133

REMOVING AND INSTALLING BULBS OF HEADLAMP UNIT - AR82.10-P-1201GH
MODEL 163.113 /136 /154 /172 /174 up to 31.8.01
rear doors
Remove, install
AM/FM amplifierMODEL 163AR82.62-P-
8347GH
Replace fiber
optical cable
(D2B) between
radio and sound
amplifier (after
testing)MODEL 163...AR82.62-P-
8350GH
Remove/install
CD player with
changerMODEL 163 with CODE (819) 6-disc CD
changerAR82.64-P-
7507GH
Fiber optical
cable (D2B)
replace complete
(after testing)MODEL 163...AR82.70-P-
0005GH
Fiber optical
cable (D2B)
replace complete
(after testing)MODEL 163...AR82.70-P-
0005GI
Fiber optical
cable (D2B)
replace complete
(after testing)MODEL 163...AR82.70-P-
0005GJ
Remove/install
antenna splitterMODEL 163.113/136 /154 /157 /172 /174AR82.70-P-
8953GH
Remove/install
electronic
compassMODEL 163...AR82.85-P-
7371GH
Remove/install
control module
for E-Call
emergency call
systemMODEL 163...AR82.95-P-
0008GH
Replace fiber
optical cable
(D2B) between
the radio and E-
call control
module/CTEL
[TEL] interface
(after testing)MODEL 163...AR82.95-P-
0015GH
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 252 © 2006 Mitchell Repair Information Company, LLC.
Page 1798 of 4133

REMOVE/INSTALL CD PLAYER WITH CHANGER - AR82.64-P-7507GH
MODEL 163 with CODE (819) 6-disc CD changer
existing wiring harness
at the red adhesive tape
markings provided for
this
9Pull the white insert of
the D2B wiring harness
out of the D2B plug on
the radio and replace
with the white insert of
the exchange D2B
wiring harness (1) Risk of breakage! Do not
kink or stretch fiber optic cable
Pay attention to the correct
installation position of the insert
in the D2B B-plug. Cut off the
fiber optical cable removed at
the adhesive tape.AR82.70-P-0004-01A
10Secure exchange D2B
wiring harness (1) on
existing rear wiring
harness in the radio
installation opening
11Plug D2B plug into the
sound amplifier
(A2/13) and fasten the
sound amplifier
(A2/13) with a screw
12Remove cover below
instrument panel on
driver's side AR68.10-P-1500GH
13Install radio (A2) AR82.60-P-7502EA
2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:10 PMPage 303 © 2006 Mitchell Repair Information Company, LLC.