Nissan Altima L32. Manual - part 83

AV-324

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT (SEDAN)

Are the fuses OK?

YES

>> GO TO 2

NO

>> Be sure to eliminate cause of malfunction before installing new fuse. 

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BOSE speaker amp connector.

3. Check voltage between BOSE speaker amp harness connector

and ground.

Are the voltage readings as specified?

YES

>> GO TO 3

NO

>> Check harness between BOSE speaker amp. and fuse.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BOSE speaker amp connector.

3. Check continuity between BOSE speaker amp harness connec-

tor and ground.

Are continuity test results as specified?

YES

>> Inspection End.

NO

>> Repair harness or connector.

CD CHANGER
CD CHANGER : Diagnosis Procedure

INFOID:0000000004206636

1.

CHECK FUSE

Check that the following fuses of the CD changer are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

(+)

(-)

Voltage (approx.)

Connector

Terminal

B122

50

Ground

Battery voltage

51

ALNIA0128ZZ

Connector

Terminal

—

Continuity

B122

47

Ground

Yes

52

ALNIA0129ZZ

Unit

Terminals

Signal name

Fuse No.

CD changer

12

Battery power

24

16

Ignition switch ACC or ON

19

AV

POWER SUPPLY AND GROUND CIRCUIT (SEDAN)

AV-325

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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Check voltage between CD changer harness connector and ground.

Are the voltage readings as specified?

YES

>> Inspection End.

NO

>> Check harness between CD changer and fuse.

MICROPHONE
MICROPHONE : Diagnosis Procedure

INFOID:0000000004206637

1.

CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)

Check voltage between microphone harness connector and ground.

Is proper voltage present?

YES

>> GO TO 4

NO

>> GO TO 2

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1. Turn ignition switch OFF.

2. Disconnect microphone and AV control unit harness connectors.

3. Check continuity between microphone harness connector R7

(A) terminal 4 and AV control unit harness connector M46 (B)

terminal 46. 

4. Check continuity between microphone harness connector R7

(A) terminal 4 and ground. 

Are the continuity test results as specified?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE)

1. Connect AV control unit harness connector.

2. Turn ignition switch to ACC.

(+)

(-)

Ignition switch po-

sition

Value (Approx.)

Connector

Terminal

M42

12

Ground

OFF

Battery voltage

16

ACC

ALLIA0249ZZ

(+)

(-)

Ignition 

switch posi-

tion

Value (Ap-

prox.)

Connector

Terminal

R7

4

Ground

ON

5V

WKIA5796E

Signal name

Continuity

Microphone VCC signal

Continuity should exist.

Signal name

Continuity

Microphone VCC signal

Continuity should not exist.

ALLIA0250ZZ

AV-326

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT (SEDAN)

3. Check voltage between AV control unit harness connector and

ground.

Is voltage approximately 5 volts?

YES

>> Inspection End.

NO

>> Replace AV control unit. Refer to 

AV-437, "Removal and

Installation"

.

4.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect microphone harness connector R7 and AV control unit harness connector M46.

3. Check continuity between microphone harness connector R7

(A) terminal 2 and AV control unit harness connector M46 (B)

terminal 47. 

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

(+)

(-)

Ignition switch 

position

Value (Approx.)

Connector

Terminal

M46

46

Ground

ACC

5V

ALLIA0251ZZ

Signal name

Continuity

Ground

Continuity should exist.

ALLIA0252ZZ

AV

DOOR SPEAKER (COUPE)

AV-327

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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DOOR SPEAKER (COUPE)

Description

INFOID:0000000004206638

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

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

Diagnosis Procedure

INFOID:0000000004206639

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.

DOOR SPEAKER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

B121

58

D3

1

Yes

59

2

71

D103

1

72

2

A

—

Continuity

Connector

Terminal

B121

58

Ground

No

59

71

72

ALNIA0134ZZ