Nissan Sentra. Manual - part 11

AV-36

< BASIC INSPECTION >

[BASE AUDIO]

DIAGNOSIS AND REPAIR WORKFLOW

Is malfunctioning part detected?

YES

>> GO TO 4

NO

>> GO TO 2

4.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure.

>> GO TO 5

5.

FINAL CHECK

Refer to confirmed symptom in step 2, and make sure that the symptom is not detected.
Has the symptom been repaired?

YES

>> Inspection End.

NO

>> GO TO 2

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-37

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

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DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure

INFOID:0000000009758810

Regarding Wiring Diagram information, refer to 

AV-25, "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 M43.

3. Check voltage between audio unit connector M43 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 M44.

3. Check continuity between audio unit connector M44 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:0000000009758811

Regarding Wiring Diagram information, refer to 

AV-25, "Wiring Diagram"

.

Terminal No.

Signal name

Fuse No.

7

ACC power supply

18 (10A)

19

Battery power supply

26 (15A)

Audio unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M43

7

—

Ignition switch: ON

Battery voltage

19

Ignition switch: OFF

Audio unit

Ground

Continuity 

Connector

Terminal

M44

23

—

Yes

AV-38

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

POWER SUPPLY AND GROUND CIRCUIT

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 M45.

3. Check voltage between Bluetooth

®

 control 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. Check continuity between Bluetooth

®

 control unit connector M45 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

26 (15A)

2

ACC power supply

18 (10A)

3

Ignition signal

5 (10A)

Bluetooth

®

 control unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M45

1

—

Ignition switch: OFF

Battery voltage

2

Ignition switch: ACC

3

Ignition switch: ON

Bluetooth

®

 control unit

Ground

Continuity 

Connector

Terminal

M45

4

—

Yes

21

22

23

27

AV

FRONT DOOR SPEAKER

AV-39

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

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FRONT DOOR SPEAKER

Diagnosis Procedure

INFOID:0000000009758812

Regarding Wiring Diagram information, refer to 

AV-25, "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 M43 and suspect front door speaker connector.

2. Check continuity between audio unit connector M43 and suspect front door speaker connector.

3. Check continuity between audio unit connector M43 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 M43 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 M43.

Audio unit

Front door speaker

Continuity

Connector

Terminal

Connector

Terminal

M43

2

D10 (LH)

1

Yes

3

2

11

D110 (RH)

1

12

2

Audio unit

Ground

Continuity

Connector

Terminal

M43

2

—

No

3

11

12

Audio unit connector M43

Condition

Reference value

(+)

(

−)

Terminal

Terminal