Nissan Altima L32. Manual - part 31

AV-116

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

DOOR SPEAKER (COUPE)

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 termi-

nals 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

AWNIA0032ZZ

SKIA0177E

AV

FRONT DOOR SPEAKER (SEDAN)

AV-117

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

FRONT DOOR SPEAKER (SEDAN)

Description

INFOID:0000000004206446

The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio

signals before sending them to the front door speakers using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000004206447

1.

HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B121 and suspect

speaker connector.

2. Check continuity between BOSE speaker amp. harness connec-

tor B121 (A) and suspect speaker harness connector (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.

FRONT DOOR SPEAKER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

B121

58

D3

1

Yes

59

2

71

D103

1

72

2

A

B

Continuity

Connector

Terminal

B121

58

Ground

No

59

71

72

ALNIA0134ZZ

AV-118

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

FRONT DOOR SPEAKER (SEDAN)

1. Connect BOSE speaker amp. connector B121 and suspect

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 audio signal voltage as specified?

YES

>> Replace suspect speaker. Refer to 

AV-219, "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.

FRONT DOOR SPEAKER SIGNAL CHECK

Connec-

tor

Terminal

Condition

Reference

signal

(+)

(-)

B121

58

59

Receive 
audio sig-
nal

71

72

ALNIA0135ZZ

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

FRONT DOOR SPEAKER (SEDAN)

AV-119

< 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 termi-

nals 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

AWNIA0032ZZ

SKIA0177E