Nissan Altima L32. Instruction — part 36
AV-136
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
SUBWOOFER (COUPE)
1. Connect audio unit connector M43 and BOSE speaker amp.
connector B121.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector M43
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace BOSE speaker amp. Refer to
"Removal and Installation - Coupe"
.
NO
>> Replace audio unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M43
4
5
Receive
audio sig-
nal
13
14
AWNIA0034ZZ
SKIA0177E
AV
SUBWOOFER (SEDAN)
AV-137
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
SUBWOOFER (SEDAN)
Description
INFOID:0000000004496842
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:0000000004496843
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
B120
1
Yes
48
2
45
B124
1
46
2
A
—
Continuity
Connector
Terminal
B122
53
Ground
No
48
45
46
ALNIA0145ZZ
AV-138
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
SUBWOOFER (SEDAN)
1. Connect BOSE speaker amp. connector B122 and suspect rear
subwoofer connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tor B122 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace suspect rear subwoofer. Refer to
.
NO
>> GO TO 3
3.
HARNESS CHECK
1. Disconnect audio unit connector M43 and BOSE speaker amp.
connector B121.
2. Check continuity between audio unit harness connector M43 (A)
and BOSE speaker amp. harness connector B121 (B).
3. Check continuity between audio unit harness connector M43 (A)
terminal 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 SUBWOOFER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
B122
53
48
Receive au-
dio signal
45
46
ALNIA0932GB
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M43
4
B121
64
Yes
5
63
13
66
14
65
A
—
Continuity
Connector
Terminal
M43
4
Ground
No
5
13
14
ALNIA0144ZZ
AV
SUBWOOFER (SEDAN)
AV-139
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Connect audio unit connector M43 and BOSE speaker amp.
connector B121.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector M43
terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage as specified?
YES
>> Replace BOSE speaker amp. Refer to
"Removal and Installation - Sedan"
.
NO
>> Replace audio unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M43
4
5
Receive
audio sig-
nal
13
14
AWNIA0034ZZ
SKIA0177E
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