1997 MERCEDES-BENZ ML320 navigation system

AUDIO 30 APS DIAGNOSIS, TROUBLESHOOTING - AD82.61-P-5001A
MODEL 163,168,170, 208, 210 with CODE (353) Audio 30 APS
GPS antenna
splitter (A2/57) or
lead defective
B1763Excessive
temperature or
reading error of CD
drive of radio and
navigation unit
(A2/56) Remove CD-ROM
from drive and check
for contamination
and damage. A2/56
B1765Gyrosensor defective A2/56
N1111
N1112
N1113
N1114
N1115
N1116
N1117
N1118Fiber optic cable
defective, Individual
D2B units defective
or power supply for
individual D2B unitsSee also: ?
Information/Communication Diagnosis
Manual Index 13.1 Digital data bus
(D2B)Model 168, 170,
208, 210
AD82.00-P-4000A
N1140Only on model 208,
210:
DTC in CAN
connection between
instrument cluster
(A1) and radio and
navigation unit
(A2/56) The radio and navigation unit
(A2/56) is connected to the
instrument cluster (A1)via a separate
CAN bus.
DTC memory for instrument cluster
(A1) CAN line between
A1 and A2/56
N1141Nominal-actual
configuration of D2B
ring variesSee also: ?
Information/Communication Diagnosis
Manual Index 13.1 Digital data bus
(D2B)Reconfigure system
AD82.00-P-4000A
N1250CD changer
Excess temperature Lower temperature
inside vehicle
N1251CD changer
CD reading error Check CD changer
N1252CD changer
CD magazine error Check CD magazine
N1253CD changer
Hardware error
(mechanical) Check hardware
components and
replace if necessary
N1254CD changer
Insufficient
temperature Heating passenger
compartment

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 221 © 2006 Mitchell Repair Information Company, LLC.

Audio 30 APS operating
notes GF82.61-P-0002-03A
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
Audio 30 APS diagnosis,
previous knowledge AD82.61-P-2001A
Battery voltage 11-14V
Troubleshooting
Complaint Cause Note Remedy
Radio and navigation
unit (A2/56) completely
inoperativeFuse in A2/56, Voltage
supply for A2/56, Defect at
navigation CD-ROM,
A2/56 AD82.61-P-6001-01A
No communication
possible between Hand-
Held Tester (HHT) and
Audio 30 APSK line, Radio and
navigation unit (A2/56) AD82.61-P-6001-02A
Navigation inoperative Navigation CD-ROM is not
loaded or is incorrectly
loaded or incorrect /
defective CD-ROM
Radio and navigation unit
(A2/56) Load navigation CD,
refer to:
GF82.61
-P-0002-03A
Destination finding
system messages are
given too early or too late
(e.g. "please turn right")Check wheel calibration
and variant coding AD82.61-P-2001-03A
The expected arrival
time is not correctTime on radio and
navigation unit (A2/56) is
incorrectly set Actuate "NAV"
pushbutton and activate
"CLOCK" menu, set
time
Navigation is defective
or impreciseCheck variant coding and
wheel calibration,
Reversing signal,
Wheel speed signal,
Models 163, 168, 208.3,
210:
Cellular telephone and GPS
roof antenna (A2/49),
Models 170, 208.4:
GPS rear antenna
(A2/23a2) Models 163, 168, 170
Models 208, 210Refer to:
AD82.61
-P-2001-03A
AD82.61
-P-6001-04A
AD82.61-P-6001-04B
AD82.61
-P-6001-03A
AD82.61-P-6001-05A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 222 © 2006 Mitchell Repair Information Company, LLC.

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.

Fig. 126: Radio And Navigation Unit, Power Su pply, Checking Electrical System, Audio 30 APS
HHT INTERFACE, TESTING, ELECTRICAL SYSTEM, AUDI O 30 APS - AD82.61-P-6001-02A
Fig. 127: HHT Interface, Testing, Electrical System, Audio 30 APS
AUDIO 30 APS TEST OF ELECTR ICAL SYSTEM WHEEL SPEED SIGNAL - AD82.61-P-6001-03A
&(AD42.45-P-1002BZ)

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electr ical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 224 © 2006 Mitchell Repair Information Company, LLC.

Fig. 129: Reverse Signal, Testing, Electrical System, Audio 30 APS
AUDIO 30 APS TEST OF ELECTRICAL SYSTEM GPS ANTENNA - AD82.61-P-6001-05B
Fig. 130: Audio 30 APS Test Of Electrical System GPS Antenna
RADIO AND NAVIGATION UNIT, ILLUMINATION, TESTING, ELECTRICAL SYSTEM, AUDIO SYSTEM 30 APS -
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 226 © 2006 Mitchell Repair Information Company, LLC.

Fig. 131: Radio And Navigation Unit, Illumination, Testing, Electrical System, Audio System 30 APS
AUDIO 30 APS, TESTING, ELECTRICAL SYSTEM - AD82.61-P-6001A
MODEL 163,168,170, 208, 210 with CODE (353) Audio 30 APS
Audio 30 APS, location
of componentsModel 163GF82.61-P-0002-01D
Audio 30 APS, location
of componentsModel 168GF82.61-P-0002-01B
Audio 30 APS, location
of componentsModel 170GF82.61-P-0002-01A
Audio 30 APS, location
of componentsModel 208, 210GF82.61-P-0002-01C
Audio 30 APS operating
instructions GF82.61-P-0002-03A
Audio 30 APS diagnosis,
basic knowledge AD82.61-P-2001A
Connector assignments
on radio and navigation
unit AD82.61-P-2001-02A
Battery voltage 11 -14 V
Testing
1Radio and navigation unit
power supply, testing,
electrical system, Audio
30 APS AD82.61-P-6001-01A
2HHT interface, testing,
electrical system, Audio
30 APS AD82.61-P-6001-02A
3Wheel speed signal,
testing, electrical system,
Audio 30 APS AD82.61-P-6001-03A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 227 © 2006 Mitchell Repair Information Company, LLC.

ANTENNA SYSTEM (AS) DIAGNOSIS, CONTENTS - AD82.62-P-1000AZ
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
SPEAKER SYSTEM (LSA) DIAGNOSIS CONTENTS - AD82.62-P-1001AZ
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
4Backup signal, testing,
electrical system, Audio
30 APS Model 163, 168,
170 AD82.61-P-6001-04A
5Backup signal, testing,
electrical system, Audio
30 APS Model 208, 210 AD82.61-P-6001-04B
6GPS antenna, testing,
electrical system, Audio
30 APSModel 168, 170, 208, 210AD82.61-P-6001-05A
7GPS antenna, testing,
electrical system, Audio
30 APSModel 163AD82.61-P-6001-05B
8Radio and navigation
unit, illumination, testing,
electrical system, Audio
30 APS AD82.61-P-6001-06A
I 4.4 [] 11Antenna system (AS)
diagnosis, previous
knowledge AD82.62-P-2000A
I 4.4 [] 12Antenna system (AS)
diagnosis, function check AD82.62-P-3000A
I 4.4 [] 21Antenna systems (AS),
testing electrical system AD82.62-P-6000A
I 5.13 [] 11Loudspeaker system (LS)
diagnosis, previous
knowledge AD82.62-P-2001A
I 5.13 [] 12Loudspeaker system (LS)
diagnosis, function check AD82.62-P-3001A
I 5.13 [] 13aLoudspeaker system (LS)
diagnosis, troubleshootingModel 208AD82.62-P-5001A

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:08 PMPage 228 © 2006 Mitchell Repair Information Company, LLC.

starts flashing again. In this state the code number can be written over as frequently as desired. A
correction can be made only by entering the complete code number again.
4. Confirm code number:
Press TUNE, AUTO/SEEK or SC button. The radio automatically switches on and indicates the radio
station or frequency stored with station button 1.
5. If an incorrect code number is entered and confirmed, the word "CODE" appears again on the display. If
an incorrect code is entered three times the word "WAIT" appears on the display and the radio locks up
for approx. 10 min. If the code is entered incorrectly three times again the radio locks up again for 10
min. Three more incorrect entries (a total of 9 incorrect attempts) increase the lock-up time to 60 min.
Another three incorrect entries lock up the radio for another 60 min.
The waiting time runs only when the radio is switched on.
CODING RADIO - AR82.60-P-7502-01GH
1. If the power supply to the radio is interrupted the radio will not operate when reconnected. After
switching on the ignition the word "CODE" appears on the radio display.
2. The code number for this radio is given on the included code card.
3. Enter the code number with the station buttons, e.g. number 1 = station button 1..
4. After entering the first digit the word "CODE" disappears and the number entered is displayed followed
by four dashes. Enter the next numbers with the corresponding station buttons. After entering the five
digit code number compare the code number with the number on the display. At this point the code
number can be written over as frequently as necessary for correction. If the wrong code number has been
entered, enter the entire code number again.
5. Confirm entry of correct code number with " < " or " > " button.
6. If the wrong code number has been entered and confirmed the word "CODE" appears again on the display
and the code must be entered again.
7. After entering the code incorrectly three times the word "WAIT" appears on the display and the radio is
disabled for approx. 10 minutes. After entering the incorrect code three times again the radio is disabled
for approx. 60 minutes.
The disable time runs down only with the radio switched off.
REMOVE/INSTALL RADIO - AR82.60-P-7502EA
MODEL 129 with single-block unit, 2nd generation two-component unit control element and MB radios
MODEL 163 with CODE (257) Hi-Line radio with CODE (259) Premium radio with Bose sound system
with CODE (352) COMAND operating and display system with CODE (353) Audio 30 APS with CODE
(357) Navigation system - additional unit with CODE (522) Modular control system (MCS) radio USA
with CODE (750) MB Audio 30 RDS radio with CODE (752) Becker Mexico 2000 radio with traffic news
decoder with CODE (753) MB Audio 30 RDS radio with CODE (756) MB Audio 10 RDS radio with CD
compartment

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
me
Saturday, October 02, 2010 3:30:09 PMPage 287 © 2006 Mitchell Repair Information Company, LLC.