Nissan Altima L32. Manual - part 30

AV-112

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT (SEDAN)

1. Turn ignition switch OFF.

2. Disconnect Bluetooth control unit connector B126.

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:0000000004206443

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

B126 (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

B126

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

AV

POWER SUPPLY AND GROUND CIRCUIT (SEDAN)

AV-113

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1. Connect Bluetooth control unit connector.

2. Turn ignition switch ON.

3. Check voltage between Bluetooth control unit harness connec-

tor and ground.

Is proper voltage present?

YES

>> Inspection End.

NO

>> Replace Bluetooth control unit. Refer to 

AV-235,

"Removal and Installation - Sedan"

.

4.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect Bluetooth control unit and microphone connectors.

3. Check continuity between microphone harness connector R7

terminal 2 and Bluetooth control unit harness connector B126

terminal 8. 

Is continuity present?

YES

>> Inspection End.

NO

>> Repair harness or connector.

(+)

(-)

Ignition switch po-

sition

Value (Approx.)

Connector

Terminal

B126

29

Ground

ON

5V

ALNIA0133ZZ

Signal name

Continuity

Microphone ground

Continuity should exist.

ALNIA0170ZZ

AV-114

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

DOOR SPEAKER (COUPE)

DOOR SPEAKER (COUPE)

Description

INFOID:0000000004206444

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:0000000004206445

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

B

Continuity

Connector

Terminal

B121

58

Ground

No

59

71

72

ALNIA0134ZZ

AV

DOOR SPEAKER (COUPE)

AV-115

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

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.

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