Mercedes-Benz ML320. Manual — part 274

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
components

Model 208

GF82.62-P-0002-01A

Model 163

GF82.62-P-0002-01E

Electric wiring diagram,
radio with sound system

Model 208

PE82.00-P-1100D

Model 163

PE82.00-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

2001 Mercedes-Benz ML320

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

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
components

Model 208

GF82.62-P-0002-01B

Model 168 Model

GF82.62-P-0002-01C

163

GF82.62-P-0002-01D

Electric wiring diagrams Model 208

PE82.00-P-1100D

Model 168

PE82.00-P-1100GC

Model 163

PE82.00-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

2001 Mercedes-Benz ML320

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

LOUDSPEAKER SYSTEM (LS) DIAGNOSIS, FUNCTION CHECK - AD82.62-P-3001A

MODEL all with MB radio

SPEAKER SYSTEM (LSA) DIAGNOSIS TROUBLESHOOTING - AD82.62-P-5001D

MODEL 163 with CODE (491) U.S. version with CODE (257) Radio Hi-Line

MODEL 163 with CODE (257a) Radio ML 5 except CODE (491) U.S. version

SPEAKER SYSTEM (LSA) DIAGNOSIS TROUBLESHOOTING - AD82.62-P-5001E

AM and FM wavebands
diagnosis, AS function
check

AD82.62-P-3000-01A



Set station with good
reception (music) or play
music cassette or CD



Fader, bass, treble and balance
in position 0 (shown in
display).

Function check

Scope of test

Operation/Requirement

Specified value

Possible
cause/Remedy

1 Loudspeaker

Listen to each loudspeaker
individually in the respective
installed position.

Loudspeaker system (LS),
diagnosis, advanced
information

AD82.62-P-2001B

Loudspeaker system (LS),
location of components

GF82.62-P-0002-01D

Troubleshooting

Complaint

Cause

Note

Remedy

Left front door speaker
(H4/5) inoperative

Loudspeaker (H4/5)
Radio (A2)

AD82.62-P-6001-02M

Left rear door speaker
(H4/3) inoperative

Loudspeaker (H4/3)
Radio (A2)

AD82.62-P-6001-02O

Right front door speaker
(H4/6) inoperative

Loudspeaker (H4/6)
Radio (A2)

AD82.62-P-6001-02P

Right rear door speaker
(H4/4) inoperative

Loudspeaker (H4/4)
Radio (A2)

AD82.62-P-6001-02R

2001 Mercedes-Benz ML320

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

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

RADIO FREQUENCY CONNECTING LINE, ANTENNA SYSTEM (AS) ELECTRICAL SYSTEM TEST - AD82.62-P-6000-02A

Loudspeaker system (LS)
diagnosis, previous
knowledge

AD82.62-P-2001A

LS, location of components

GF82.62-P-0002-01E

Troubleshooting

Complaint

Cause

Note

Remedy

Loudspeaker system
inoperative

Amplifier control module
(N40/6)
Radio (A2)

AD82.62-P-6001-01C

Left rear door speaker
(H4/3) inoperative

Left rear door speaker
(H4/3)

AD82.62-P-6001-02S