Nissan Altima L32. Manual - part 89

AV-348

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

SUBWOOFER (COUPE)

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 

AV-445,

"Removal and Installation"

.

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 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

M47

5

B121

64

Yes

6

63

14

66

15

65

A

—

Continuity

Connector

Terminal

M47

5

Ground

No

6

14

15

ALLIA0253ZZ

AV

SUBWOOFER (COUPE)

AV-349

< 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 

AV-216,

"Removal and Installation - Coupe"

.

NO

>> Replace AV control unit. Refer to 

AV-437, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M47

5

6

Receive audio 
signal

14

15

ALNIA0172ZZ

SKIA0177E

AV-350

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

SUBWOOFER (SEDAN)

SUBWOOFER (SEDAN)

Description

INFOID:0000000004496865

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:0000000004496866

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

SUBWOOFER (SEDAN)

AV-351

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

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 

AV-445,

"Removal and Installation"

.

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 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

M47

5

B121

64

Yes

6

63

14

66

15

65

A

—

Continuity

Connector

Terminal

M47

5

Ground

No

6

14

15

ALLIA0253ZZ