Nissan Leaf. Manual - part 1256

VSP-44

< DTC/CIRCUIT DIAGNOSIS >

B2741 VSP CONTROL UNIT

B2741 VSP CONTROL UNIT

DTC Logic

INFOID:0000000010121583

DTC DETECTION LOGIC

NOTE:

DTC “B2741” may be detected when VSP speaker or start up sound speaker connector is disconnected with-

out disconnecting the 12V battery negative terminal. 

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn power switch ON.

2. Erases “self-diagnosis results” with CONSULT.

3. Turn power switch OFF.

4. Turn power switch ON.

5. Check if the DTC “B2741” is detected in self-diagnosis results of “VSP”.
Is “B2741” detected?

YES

>> Refer to 

VSP-44, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-53, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000010121584

1.

CHECK START UP SOUND SPEAKER SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect VSP control unit and start up sound speaker connector. 

3. Check continuity between VSP control unit harness connector and start up sound speaker harness con-

nector.

4. Check continuity between VSP control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK START UP SOUND SPEAKER

Check start up sound speaker. Refer to 

VSP-45, "Component Inspection (Start Up Sound Speaker)"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when...

Probable malfunction location

B2741

VSP CONTROL UNIT

• VSP control unit internal malfunction
• When open circuit is detected in VSP 

speaker circuit or  start up sound speaker 
circuit

• When short circuit is detected in VSP 

speaker circuit or  start up sound speaker 
circuit

• VSP  control  unit
• VSP speaker circuit
• VSP speaker
• Start up sound speaker circuit
• Start up sound speaker

VSP control unit

Start up sound speaker

Continuity

Connector

Terminal

Connector

Terminal

M47

15

M48

2

Existed

16

1

VSP control unit

Ground

Continuity

Connector

Terminal

M47

15

Not existed

16

B2741 VSP CONTROL UNIT

VSP-45

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

VSP

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace start up sound speaker.

3.

CHECK VSP SPEAKER SIGNAL CIRCUIT

1. Disconnect VSP speaker connector. 

2. Check continuity between VSP control unit harness connector and VSP speaker harness connector.

3. Check continuity between VSP control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK VSP SPEAKER

Check VSP speaker. Refer to 

VSP-45, "Component Inspection (VSP Speaker)"

.

Is the inspection result normal?

YES

>> Replace VSP control unit.

NO

>> Replace VSP speaker.

Component Inspection (Start Up Sound Speaker)

INFOID:0000000010121585

1.

CHECK START UP SOUND SPEAKER

1. Turn power switch OFF.

2. Disconnect start up sound speaker connector.

3. Check resistance between start up sound speaker terminals. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace start up sound speaker. 

Component Inspection (VSP Speaker)

INFOID:0000000010121586

1.

CHECK VSP SPEAKER

1. Turn power switch OFF.

2. Disconnect VSP speaker connector.

3. Check resistance between VSP speaker terminals. 

Is the inspection result normal?

YES

>> INSPECTION END

VSP control unit

VSP speaker

Continuity

Connector

Terminal

Connector

Terminal

M47

7

E42

2

Existed

8

1

VSP control unit

Ground

Continuity

Connector

Terminal

M47

7

Not existed

8

Terminal

Resistance

1

2

Approx. 6 

Ω

Terminal

Resistance

1

2

Approx. 4 

Ω

VSP-46

< DTC/CIRCUIT DIAGNOSIS >

B2741 VSP CONTROL UNIT

NO

>> Replace VSP speaker. 

POWER SUPPLY AND GROUND CIRCUIT

VSP-47

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

VSP

N

O

P

POWER SUPPLY AND GROUND CIRCUIT

APPROACHING VEHICLE SOUND FOR PEDESTRIANS (VSP) CONTROL UNIT
APPROACHING VEHICLE SOUND FOR PEDESTRIANS (VSP) CONTROL UNIT : 
Diagnosis Procedure

INFOID:0000000010121587

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn power switch ON.

2. Check voltage between VSP control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace VSP control unit power supply harness.

3.

CHECK GROUND CIRCUIT

1. Turn power switch OFF.

2. Disconnect VSP control unit connector.

3. Check continuity between VSP control unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace VSP control unit ground harness.

Signal name

Fuse No.

Battery power supply

11

Power switch ON signal

5

Signal name

Connector No.

Terminal No.

Power switch position

Value (Approx.)

Battery power supply

M47

13

OFF

Battery voltage

Power switch ON signal

11

ON

Battery voltage

VSP control unit

Ground

Continuity

Connector

Terminal

M47

1

Existed