Nissan Altima HL32 Hybrid. Manual - part 22

AV-80

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

CENTER SPEAKER

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.

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-131,

"Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-130, "Removal and

Installation"

.

Terminals

Continuity

A

B 

Connector

Terminal

Connector

Terminal

M43

2

B121

75

Yes

3

76

11

73

12

74

Terminals

Continuity

A

—

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

AV

REAR DOOR SPEAKER

AV-81

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

REAR DOOR SPEAKER

Description

INFOID:0000000004219448

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

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

Diagnosis Procedure

INFOID:0000000004219449

1.

HARNESS CHECK

1. Disconnect BOSE speaker amp. connectors B121, B122 and

suspect speaker connector.

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

tors B121 (A) and B122 (B) and suspect speaker harness con-

nector (C).

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

tors B121 (A) and B122 (B) 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 DOOR SPEAKER SIGNAL CHECK

Terminals

Continuity

Connector

Terminal

Connector

Terminal

A: B121

55

C: D202

2

Yes

68

1

B: B122

49

C: D302

2

54

1

Connector

Terminal

-

Continuity

A: B121

55

Ground

No

68

B: B122

49

54

ALNIA0141ZZ

AV-82

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

REAR DOOR SPEAKER

1. Connect BOSE speaker amp. connectors and suspect speaker

connector.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between BOSE speaker amp. harness connec-

tors B121 (A) and B122 (B) terminals with CONSULT-III or oscil-

loscope.

Are audio signal voltage readings as specified?

YES

>> Replace suspect speaker. Refer to 

AV-135, "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 the continuity test results as specified?

YES

>> GO TO 4

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

4.

REAR DOOR SPEAKER SIGNAL CHECK

Connector

Terminals

Condition

Reference

signal

(+)

(-)

A: B121

68

55

Receive 
audio sig-
nal

B: B122

54

49

ALNIA0142ZZ

SKIA0177E

Terminals

Continuity

A

B 

Connector

Terminal

Connector

Terminal

M43

4

B121

64

Yes

5

63

13

66

14

65

Terminals

Continuity

A

—

Connector

Terminal

M43

4

Ground

No

5

13

14

ALNIA0144ZZ

AV

REAR DOOR SPEAKER

AV-83

< 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 reading as specified?

YES

>> Replace BOSE speaker amp. Refer to 

AV-131,

"Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-130, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M43

4

5

Receive 
audio sig-
nal

13

14

AWNIA0034ZZ

SKIA0177E