Nissan Altima L32. Manual - part 28

AV-104

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT (COUPE)

COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT (COUPE)

AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure

INFOID:0000000004206434

1.

CHECK FUSES

Check that the following fuses are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Disconnect audio unit connector M43. 

2. Check voltage between the audio unit connector M43 and

ground.

Are the voltage results as specified?

YES

>> GO TO 3

NO

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

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

Inspect audio unit case ground.
Does case ground pass inspection?

YES

>> Inspection End.

NO

>> Repair audio unit case ground.

BOSE SPEAKER AMP
BOSE SPEAKER AMP : Diagnosis Procedure

INFOID:0000000004206435

1.

CHECK FUSE

Check for blown fuses.

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

Unit

Terminals

Signal name

Fuse No.

Audio unit

19

Battery power

24

7

Ignition switch ACC or ON

19

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M43

19

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

7

Ground

0V

Battery 
voltage

Battery 
voltage

WKIA5769E

Unit

Terminals

Signal name

Fuse No.

BOSE speaker amp.

50

Battery power

25

51

26

AV

POWER SUPPLY AND GROUND CIRCUIT (COUPE)

AV-105

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

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1. Turn ignition switch OFF.

2. Disconnect BOSE speaker amp connector.

3. Check voltage between BOSE speaker amp harness connector

and ground.

Is battery voltage present?

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.

Does continuity exist?

YES

>> Inspection  End.

NO

>> Repair harness or connector.

SATELLITE RADIO TUNER
SATELLITE RADIO TUNER : Diagnosis Procedure

INFOID:0000000004206436

1.

CHECK FUSES

Check that the following fuses are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Turn ignition switch OFF.

2. Disconnect satellite radio tuner (factory installed) connector B57. 

3. Check voltage between the satellite radio tuner (factory installed) and ground.

(+)

(-)

Voltage (approx.)

Connector

Terminal

B122

50

Ground

Battery voltage

51

ALNIA0128ZZ

(+)

(-)

Continuity

Connector

Terminal

B122

47

Ground

Yes

52

ALNIA0129ZZ

Unit

Terminals

Signal name

Fuse No.

Satellite radio tuner (factory in-
stalled)

32

Battery power

24

36

Ignition switch ACC or ON

19

AV-106

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT (COUPE)

Are the voltage results as specified?

YES

>> GO TO 3

NO

>> • Check connector housings for disconnected or loose

terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

Inspect satellite radio tuner (factory installed) case ground.
Does case ground pass inspection?

YES

>> Inspection End.

NO

>> Repair satellite radio tuner (factory installed) case ground.

BLUETOOTH CONTROL UNIT
BLUETOOTH CONTROL UNIT : Diagnosis Procedure

INFOID:0000000004206437

1.

CHECK FUSE

Check that the following fuses of the Bluetooth control unit 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

Check voltage between Bluetooth control unit harness connector

and ground.

Are the voltage results as specified?

YES

>> GO TO 3

NO

>> Check harness between Bluetooth control unit and fuse.

3.

CHECK GROUND CIRCUIT

(+)

(-)

OFF

ACC

ON

Connector

Terminal

B57

32

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

36

Ground

0V

Battery 
voltage

Battery 
voltage

WKIA4539E

Power source

Fuse No.

Battery

24

Ignition switch ACC or ON

19

Ignition switch ON or START 

3

(+)

(-)

Ignition switch 

position

Value (Approx.)

Connector

Terminal

B55

1

Ground

OFF

Battery voltage

2

ACC

3

ON

WKIA4389E

AV

POWER SUPPLY AND GROUND CIRCUIT (COUPE)

AV-107

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1. Turn ignition switch OFF.

2. Disconnect Bluetooth control unit connector B55.

3. Check continuity between Bluetooth control unit harness con-

nector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

MICROPHONE
MICROPHONE : Diagnosis Procedure

INFOID:0000000004206438

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 Bluetooth control unit and microphone connectors.

3. Check continuity between microphone harness connector R7

(A) terminal 4 and Bluetooth control unit harness connector B55

(B) terminal 29. 

4. Check continuity between microphone harness connector R7

(A) terminal 4 and ground. 

Are continuity results as specified?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK POWER SUPPLY CIRCUIT (BLUETOOTH CONTROL UNIT SIDE)

(+)

(-)

Continuity 

Connector

Terminal

B55

4

Ground

Yes

24

ALNIA0130ZZ

(+)

(-)

Ignition switch po-

sition

Value (Approx.)

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.

ALNIA0132ZZ