Nissan Maxima. Manual - part 52

AV-28

< DTC/CIRCUIT DIAGNOSIS >

[MONOCHROME DISPLAY - W/O BOSE]

POWER SUPPLY AND GROUND CIRCUIT

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 subwoofer amp connector.

3. Check voltage between subwoofer amp harness connector and ground.

Is battery voltage present?

YES

>> GO TO 3.

NO

>> Check harness between subwoofer amp and fuse.

3.

CHECK GROUND CIRCUIT

Check continuity between subwoofer amp harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000009471171

Regarding Wiring Diagram information, refer to 

AV-54, "Wiring Diagram - Without BOSE Audio system"

.

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

Unit

Terminals

Signal name

Fuse No.

Subwoofer amp.

9

Ign switch ACC or ON 

17

(+)

(-)

Voltage (approx.)

Connector

Terminal

B21

9

Ground

Battery voltage

(+)

(-)

Continuity

Connector

Terminal

B21

7

Ground

Yes

Unit

Terminals

Signal name

Fuse No.

Display unit

9

Battery power

24

8

Ignition switch ACC or ON

17

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-29

< DTC/CIRCUIT DIAGNOSIS >

[MONOCHROME DISPLAY - W/O BOSE]

C

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B

A

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1. Turn ignition switch OFF.

2. Disconnect display unit connector. 

3. Check voltage between the display unit 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

1. Turn ignition switch OFF.

2. Check continuity between display unit harness connector and

ground. 

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

BLUETOOTH® CONTROL UNIT
BLUETOOTH® CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009471172

Regarding Wiring Diagram information, refer to 

AV-54, "Wiring Diagram - Without BOSE Audio system"

.

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

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M109

9

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

8

Ground

0V

Battery 
voltage

Battery 
voltage

AWNIA1679ZZ

Connector

Terminal

—

Continuity

M109

3

Ground

Yes

AWNIA1680ZZ

Power source

Fuse No.

Battery

24

Ignition switch ACC or ON

17

Ignition switch ON or START 

3

AV-30

< DTC/CIRCUIT DIAGNOSIS >

[MONOCHROME DISPLAY - W/O BOSE]

POWER SUPPLY AND GROUND 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

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:0000000009471173

Regarding Wiring Diagram information, refer to 

AV-54, "Wiring Diagram - Without BOSE Audio system"

.

1.

CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)

Check voltage between microphone harness connector and ground.

Is proper voltage present?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

(+)

(-)

Ignition switch 

position

Value (Approx.)

Connector

Terminal

B126

1

Ground

OFF

Battery voltage

2

ACC

3

ON

WKIA4389E

(+)

(-)

Continuity 

Connector

Terminal

B126

4

Ground

Yes

23

AWNIA1681ZZ

(+)

(-)

Ignition switch po-

sition

Value (Approx.)

Connector

Terminal

R7

4

Ground

ON

5V

WKIA5796E

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-31

< DTC/CIRCUIT DIAGNOSIS >

[MONOCHROME DISPLAY - W/O BOSE]

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 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

>> Replace the Bluetooth

®

 control unit. Refer to 

AV-88, "Removal and Installation"

.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect Bluetooth

®

 control unit and microphone connectors.

3. Check continuity between Bluetooth

®

 control unit harness con-

nector B126 (A) terminal 8 and microphone harness connector

R7 (B) terminal 2. 

Is continuity present?

YES

>> Inspection End.

NO

>> Repair harness or connector.

A

B

Continuity

Connector

Terminal

Connector

Terminal

R7

4

B126

29

Yes

A

—

Continuity

Connector

Terminal

R7

4

Ground

No

ALNIA0132ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

B126

8

R7

2

Yes

AWNIA1693ZZ