Nissan Altima L32. Instruction — part 87
AV-340
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
CENTER SPEAKER
1. Disconnect AV control unit connector M47 and BOSE speaker
amp. connector B121.
2. Check continuity between audio 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.
CENTER SPEAKER SIGNAL CHECK
1. Connect AV control unit connector and BOSE speaker amp.
connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector M47
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage reading as specified?
YES
>> Replace BOSE speaker amp. For coupe, refer to
438, "Removal and Installation - Coupe"
AV-438, "Removal and Installation - Sedan"
NO
>> Replace AV control unit. Refer to
A
B
Continuity
Connector
Terminal
Connector
Terminal
M47
2
B121
75
Yes
3
76
11
73
12
74
A
—
Continuity
Connector
Terminal
M47
2
Ground
No
3
11
12
ALNIA0136ZZ
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M47
2
3
Receive
audio sig-
nal
11
12
ALNIA0171ZZ
SKIA0177E
AV
REAR TWEETER (COUPE)
AV-341
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
REAR TWEETER (COUPE)
Description
INFOID:0000000004206648
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 tweeters using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000004206649
1.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connectors B121, B122 and
suspect tweeter connector.
2. Check continuity between BOSE speaker amp. harness connec-
tors B121 (A) and B122 (B) and suspect tweeter 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 TWEETER 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-342
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
REAR TWEETER (COUPE)
1. Connect BOSE speaker amp. connectors B121, B122 and sus-
pect tweeter 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 tweeter. 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 TWEETER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
A: B121
68
55
Receive
audio sig-
nal
B: B122
54
49
ALNIA0142ZZ
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
REAR TWEETER (COUPE)
AV-343
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
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 - Coupe"
.
NO
>> Replace AV control unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M47
5
6
Receive audio
signal
14
15
ALNIA0172ZZ
SKIA0177E
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