Nissan Leaf. Manual - part 14

AV

DIAGNOSIS AND REPAIR WORKFLOW

AV-47

< BASIC INSPECTION >

[AUDIO W/O NAVI (EXCEPT MEXICO)]

C

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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.
Was the repair confirmed?

YES

>> Inspection End.

NO

>> GO TO 2.

AV-48

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (EXCEPT MEXICO)]

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure

INFOID:0000000010122477

Regarding Wiring Diagram information, refer to 

AV-33, "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 power switch OFF.

2. Disconnect audio unit connector M83.

3. Check voltage between audio unit connector M83 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK GROUND CIRCUIT

1. Turn power switch OFF.

2. Disconnect audio unit connector M84.

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:0000000010122478

Regarding Wiring Diagram information, refer to 

AV-33, "Wiring Diagram"

.

Terminal No.

Signal name

Fuse No.

7

ACC power supply

19 (10A)

19

Battery power supply

34 (20A)

Audio unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M83

7

—

Power switch: ON

Battery voltage

19

Power switch: OFF

Audio unit

Ground

Continuity 

Connector

Terminal

M83

20

—

Yes

M84

45

48

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-49

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (EXCEPT MEXICO)]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

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 power switch OFF.
2. Disconnect Bluetooth

®

 control unit connector B9.

3. Check voltage between Bluetooth

®

 control unit connector B9 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK GROUND CIRCUIT

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

®

 control unit connector B9 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

34 (20A)

2

ACC power supply

19 (10A)

3

Power signal

3 (10A)

Bluetooth

®

 control unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

B9

1

—

Power switch: OFF

Battery voltage

2

Power switch: ACC

3

Power switch: ON

Bluetooth

®

 control unit

Ground

Continuity 

Connector

Terminal

B9

4

—

Yes

24

27

AV-50

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (EXCEPT MEXICO)]

FRONT DOOR SPEAKER

FRONT DOOR SPEAKER

Diagnosis Procedure

INFOID:0000000010122479

Regarding Wiring Diagram information, refer to 

AV-33, "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 M83 and suspect front door speaker connector.

2. Check continuity between audio unit connector M83 and suspect front door speaker connector.

3. Check continuity between audio unit connector M83 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 M83 and suspect front door speaker connector.

2. Turn power switch to ACC.

3. Push audio unit POWER switch.

4. Check signal between the terminals of audio unit connector M83.

Audio unit

Front door speaker

Continuity

Connector

Terminal

Connector

Terminal

M83

2

D23 (LH)

1

Yes

3

2

11

D123 (RH)

1

12

2

Audio unit

Ground

Continuity

Connector

Terminal

M83

2

—

No

3

11

12

Audio unit connector M83

Condition

Reference value

(+)

(

−)

Terminal

Terminal