Nissan Altima L32. Manual - 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 

AV-217, "Removal

and Installation"

.

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 

AV-216,

"Removal and Installation - Coupe"

.

NO

>> Replace audio unit. Refer to 

AV-215, "Removal and

Installation"

.

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 

AV-216,

"Removal and Installation - Coupe"

 or 

AV-216,

"Removal and Installation - Sedan"

.

NO

>> Replace audio unit. Refer to 

AV-215, "Removal and

Installation"

.

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