Nissan Altima L32. Instruction — part 33
AV-124
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
TWEETER (SEDAN)
1. Connect BOSE speaker amp. connector B122 and suspect
tweeter 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.
Are the audio signal voltage readings as specified?
YES
>> Replace suspect tweeter. 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)
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.
TWEETER SIGNAL CHECK
Connector
Terminals
Condition
Reference
signal
(+)
(-)
B122
41
42
Receive
audio sig-
nal
44
43
ALNIA0138ZZ
SKIA0177E
A
B
Continuity
Connector
Terminal
Connector
Terminal
M43
2
B121
75
Yes
3
76
11
73
12
74
A
—
Continuity
Connector
Terminal
M43
2
Ground
No
3
11
12
ALNIA0136ZZ
AV
TWEETER (SEDAN)
AV-125
< 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 and BOSE speaker amp. connec-
tor.
2. Turn ignition switch ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector M43
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 audio unit. Refer to
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M43
2
3
Receive
audio sig-
nal
11
12
ALNIA0171ZZ
SKIA0177E
AV-126
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
CENTER SPEAKER
CENTER SPEAKER
Description
INFOID:0000000004206452
The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio
signals before sending them to the center speaker using the audio signal circuits.
Diagnosis Procedure
INFOID:0000000004206453
1.
HARNESS CHECK
1. Disconnect BOSE speaker amp. connector B121 and center
speaker connector M151.
2. Check continuity between BOSE speaker amp. harness connec-
tor B121 (A) and center speaker harness connector M151 (B).
3. Check continuity between BOSE speaker amp. harness connec-
tor B121 (A) and ground.
Are continuity test results as specified?
YES
>> GO TO 2
NO
>> • Check connector housings for disconnected or loose terminals.
• Repair harness or connector.
2.
CENTER SPEAKER SIGNAL CHECK
1. Connect BOSE speaker amp. connector B121 and center
speaker connector.
2. Turn ignition switch to ACC.
3. Push “POWER” switch.
4. Check the signal between BOSE speaker amp. harness connec-
tor B121 terminals with CONSULT-III or oscilloscope.
Is the audio signal voltage reading as specified?
YES
>> Replace center speaker. Refer to
AV-218, "Removal and Installation"
.
NO
>> GO TO 3
3.
HARNESS CHECK
A B
Continuity
Connector
Terminal
Connector
Terminal
B121
69
M151
1
Yes
70
2
A
—
Continuity
Connector
Terminal
B121
69
Ground
No
70
ALNIA0139ZZ
Connector
Terminals
Condition
Reference
signal
(+)
(-)
B121
69
70
Receive
audio sig-
nal
ALNIA0140ZZ
SKIA0177E
AV
CENTER SPEAKER
AV-127
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
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)
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 audio unit connector and BOSE speaker amp. connec-
tor.
2. Turn ignition switch ACC.
3. Push “POWER” switch.
4. Check the signal between audio unit harness connector M43
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"
or
"Removal and Installation - Sedan"
.
NO
>> Replace audio unit. Refer to
A
B
Continuity
Connector
Terminal
Connector
Terminal
M43
2
B121
75
Yes
3
76
11
73
12
74
A
—
Continuity
Connector
Terminal
M43
2
Ground
No
3
11
12
ALNIA0136ZZ
Connector
Terminals
Condition
Reference
signal
(+)
(-)
M43
2
3
Receive
audio sig-
nal
11
12
ALNIA0171ZZ
SKIA0177E
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