Nissan Note E12. Manual - part 20

AV-72

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure

INFOID:0000000009460159

Regarding Wiring Diagram information, refer to 

AV-59, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the following fuses are not blown.

Are the fuses blown?

YES

>> Replace the blown fuse after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect audio unit connector M45.

3. Check voltage between audio unit connector M45 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect audio unit connector M40.

3. Check continuity between audio unit connectors and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connectors.

BLUETOOTH® CONTROL UNIT
BLUETOOTH® CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009460160

Terminal No.

Signal name

Fuse No.

7

ACC power supply

18 (10A)

19

Battery power supply

29 (15A)

Audio unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M45

7

—

Ignition switch: ON

Battery voltage

19

Ignition switch: OFF

Audio unit

Ground

Continuity 

Connector

Terminal

M45

20

—

Yes

M40

44

46

48

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-73

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Regarding Wiring Diagram information, refer to 

AV-59, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the following fuses are not blown.

Are the fuses blown?

YES

>> Replace the blown fuse after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect Bluetooth

®

 control unit connector B33.

3. Check voltage between Bluetooth

®

 control unit connector B33 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.
2. Check continuity between Bluetooth

®

 control unit connector B33 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connectors.

Terminal No.

Signal name

Fuse No.

1

Battery power supply

29 (15A)

2

ACC power supply

17 (10A)

3

Ignition signal

5 (10A)

Bluetooth

®

 control unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

B33

1

—

Ignition switch: OFF

Battery voltage

2

Ignition switch: ACC

3

Ignition switch: ON

Bluetooth

®

 control unit

Ground

Continuity 

Connector

Terminal

B33

4

—

Yes

20

22

23

24

27

AV-74

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

FRONT DOOR SPEAKER

FRONT DOOR SPEAKER

Diagnosis Procedure

INFOID:0000000009460161

Regarding Wiring Diagram information, refer to 

AV-59, "Wiring Diagram"

.

1.

CONNECTOR CHECK

Check the audio unit and speaker connectors for the following:

•  Proper connection

•  Damage

•  Disconnected or loose terminals
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminals or connectors.

2.

CHECK FRONT DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY

1. Disconnect audio unit connector M45 and suspect front door speaker connector.

2. Check continuity between audio unit connector M45 and suspect front door speaker connector.

3. Check continuity between audio unit connector M45 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK FRONT DOOR SPEAKER SIGNAL

1. Connect audio unit connector M45 and suspect front door speaker connector.

2. Turn ignition switch to ACC.

3. Push audio unit POWER switch.

4. Check signal between the terminals of audio unit connector M45.

Audio unit

Front door speaker

Continuity

Connector

Terminal

Connector

Terminal

M45

2

D12 (LH)

1

Yes

3

2

11

D112 (RH)

1

12

2

Audio unit

Ground

Continuity

Connector

Terminal

M45

2

—

No

3

11

12

Audio unit connector M45

Condition

Reference value

(+)

(

−)

Terminal

Terminal

AV

FRONT DOOR SPEAKER

AV-75

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> Replace front door speaker. Refer to 

AV-94, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-93, "Removal and Installation"

.

2

3

Audio signal output

11

12

SKIB3609E