Nissan Altima L32. Instruction — part 88
AV-344
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
REAR DOOR SPEAKER (SEDAN)
REAR DOOR SPEAKER (SEDAN)
Description
INFOID:0000000004206650
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio
signals before sending them to the rear door speakers using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000004206651
1.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connectors B121, B122 and
suspect speaker connector.
2. Check continuity between BOSE speaker amp. harness connec-
tors B121 (A) and B122 (B) and suspect speaker harness con-
nector (C).
3. Check continuity between BOSE speaker amp. harness connec-
tors B121 (A) and B122 (B) and ground.
Are the continuity test results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
REAR DOOR SPEAKER SIGNAL CHECK
Connector
Terminal
Connector
Terminal
Continuity
A: B121
55
C: D202
2
Yes
68
1
B: B122
49
C: D302
2
54
1
Connector
Terminal
—
Continuity
A: B121
68
Ground
No
55
B: B122
49
54
ALNIA0141ZZ
AV
REAR DOOR SPEAKER (SEDAN)
AV-345
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
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1. Connect BOSE speaker amp. connectors B121, B122 and sus-
pect speaker connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tors (A) B121 and (B) B122 terminals with CONSULT-III or oscil-
loscope.
Is the audio signal voltage readings as specified?
YES
>> Replace suspect speaker. Refer to
NO
>> GO TO 3.
3.
HARNESS CHECK
1. Disconnect AV control unit connector M47 and BOSE speaker amp. connector B121.
2. Check continuity between AV control unit harness connector
M47 (A) and BOSE speaker amp. harness connector B121 (B).
3. Check continuity between AV control unit harness connector
M47 (A) and ground.
Are continuity test results as specified?
YES
>> GO TO 4
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
4.
REAR DOOR SPEAKER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)l
A: B121
68
55
Receive
audio sig-
nal
B: B122
54
49
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SKIA0177E
A B
Continuity
Connector
Terminal
Connector
Terminal
M47
5
B121
64
Yes
6
63
14
66
15
65
A
—
Continuity
Connector
Terminal
M47
5
Ground
No
6
14
15
ALLIA0253ZZ
AV-346
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
REAR DOOR SPEAKER (SEDAN)
1. Connect AV control unit connector M47 and BOSE speaker
amp. connector B121.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between AV control unit harness connector
M47 terminals with CONSULT-III or oscilloscope.
Are the audio signal voltage readings as specified?
YES
>> Replace BOSE speaker amp. Refer to
"Removal and Installation - Sedan"
.
NO
>> Replace AV control unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M47
5
6
Receive audio
signal
14
15
ALNIA0172ZZ
SKIA0177E
AV
SUBWOOFER (COUPE)
AV-347
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
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M
B
A
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SUBWOOFER (COUPE)
Description
INFOID:0000000004206652
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio
signals before sending them to the subwoofers using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000004206653
1.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connector B122 and suspect
rear subwoofer connector.
2. Check continuity between BOSE speaker amp. harness connec-
tor B122 (A) and suspect rear subwoofer harness connector (B).
3. Check continuity between BOSE speaker amp. harness connec-
tor B122 (A) and ground.
Are the continuity test results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
REAR SUBWOOFER SIGNAL CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
B122
53
B25
1
Yes
48
2
45
B47
1
46
2
A
—
Continuity
Connector
Terminal
B122
53
Ground
No
48
45
46
ALNIA0145ZZ
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