Mercedes-Benz ML320. Service manual - part 271

 

  Index      Mercedes     Mercedes-Benz ML320 - service and repair manual 1997-2005 year

 

Search            copyright infringement  

 

 

 

 

 

 

 



 

 

Content   ..  269  270  271  272   ..

 

 

Mercedes-Benz ML320. Service manual - part 271

 

 

(A2/56) 

B1010

Radio and 
navigation unit 
(A2/56)
 switches off 
due to undervoltage

 

AD82.61-P-6001-
01A

B1011

Radio and 
navigation unit 
(A2/56)
 switches off 
due to overvoltage

 

AD82.61-P-6001-
01A

B1088

Only on model 208, 
210:
  
Malfunction 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. 
Read out instrument cluster (A1) 
DTC memory

CAN line between 
A1 and A2/56

B1734

Model 163:  
Wheel speed signal 
from CAN bus 
adapter missing 
Model 168:  
Signal from left rear 
wheel speed sensor 
(L6/3)
 missing 
Model 170:  
Signal from left front 
wheel speed sensor 
(L6/1)
 missing 
Models 208, 210:  
Signal from right 
front wheel speed 
sensor (L6/2)
 
missing

 The wheel speed signals are passed 

to the radio and navigation unit 
(A2/56)
 via a separate line and not 
directly on CAN. 
See also: Chassis Diagnosis Manual, 
index 9 or index 10: ? 
Index 10.4 ESP (Model 163) 
Index 10.3 ESP (Model 168) 
Index 10.2 ESP (Model 208, 210) 
Index 10.5 ESP (Model 208)

AD82.61-P-6001-
03A
 
AD42.45-P-1002AZ 
 
AD42.45-P-
1002GCZ 
AD42.45-P-1000AZ
See STAR 
DIAGNOSIS

B1738

Models 168, 208.4:  
GPS antenna 
(A2/49a2)
 or lead 
defective 
Models 170, 208.3:  
Rear GPS antenna 
(A2/23a2)
 or lead 
defective

 

AD82.61-P-6001-
05A

 

Model 163:  
Telephone and GPS 
roof antenna (A2/49)
or telephone and 

 The GPS and telephone radio 

signals are transmitted between A2/49 
and A2/57 via a common antenna 
cable.

AD82.61-P-6001-
05B

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

  

me 

 

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

B1763

Excessive 
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

B1765

Gyrosensor defective  

A2/56

N1111 
N1112 
N1113 
N1114 
N1115 
N1116 
N1117 
N1118

Fiber optic cable 
defective, Individual 
D2B units defective 
or power supply for 
individual D2B units

See also: ? 
Information/Communication Diagnosis 
Manual Index 13.1 Digital data bus 
(D2B)

Model 168, 170, 
208, 210 
AD82.00-P-4000A

N1140

Only 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

N1141

Nominal-actual 
configuration of D2B 
ring varies

See also: ? 
Information/Communication Diagnosis 
Manual Index 13.1 Digital data bus 
(D2B)

Reconfigure system
AD82.00-P-4000A

N1250

CD changer 
Excess temperature

 

Lower temperature 
inside vehicle

N1251

CD changer 
CD reading error

 

Check CD changer

N1252

CD changer 
CD magazine error

 

Check CD magazine

N1253

CD changer 
Hardware error 
(mechanical)

 

Check hardware 
components and 
replace if necessary

N1254

CD changer 
Insufficient 
temperature

 

Heating passenger 
compartment

 

2001 Mercedes-Benz ML320 

1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis

  

me 

 

 

Audio 30 APS operating 
notes

 

GF82.61-P-0002-03A

 

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

 

 

Models 208, 210

GF82.61-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 
inoperative

Fuse 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 APS

K 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 correct

Time on radio and 
navigation unit (A2/56) is 
incorrectly set

 

Actuate "NAV" 
pushbutton and activate 
"CLOCK" menu, set 
time

Navigation is defective 
or imprecise

Check 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, 210

Refer 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 

 

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 

 

 

 

 

 

 

 

 

Content   ..  269  270  271  272   ..