Nissan Versa Sedan. Instruction - part 7

AV-20

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

POWER SUPPLY AND GROUND CIRCUIT

DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

AUDIO UNIT
AUDIO UNIT : Diagnosis Procedure

INFOID:0000000009266702

Regarding Wiring Diagram information, refer to 

AV-12, "Wiring Diagram"

.

1.

CHECK FUSES

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.

POWER SUPPLY CIRCUIT CHECK

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.

GROUND CIRCUIT CHECK

Inspect audio unit case ground.
Is the inspection result normal?

YES

>> Inspection End. 

NO

>> Repair audio unit case ground.

Terminals

Signal name

Fuse No.

19

Battery power supply

29 (20A)

7

ACC power supply

18 (10A)

Audio unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M43

19

—

Ignition switch: OFF

Battery voltage

7

Ignition switch: ACC

AV

FRONT DOOR SPEAKER

AV-21

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

FRONT DOOR SPEAKER

Diagnosis Procedure

INFOID:0000000009266704

Regarding Wiring Diagram information, refer to 

AV-12, "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 and 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 harness or connector.

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 terminals of audio unit connector M43.

Audio unit

Front door speaker

Continuity

Connector

Terminal

Connector

Terminal

M43

2

D12 (LH)

1

Yes

3

2

11

D112 (RH)

1

12

2

Audio unit

Ground

Continuity

Connector

Terminal

M43

2

—

Yes

3

11

12

AV-22

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

FRONT DOOR SPEAKER

Is the inspection result normal?

YES

>> Replace front door speaker. Refer to 

AV-29, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-28, "Removal and Installation"

.

Audio unit connector M43

Condition

Reference value

(+)

(-)

Terminal

Terminal

2

3

Audio signal output

11

12

SKIA0177E

AV

REAR DOOR SPEAKER

AV-23

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

REAR DOOR SPEAKER

Diagnosis Procedure

INFOID:0000000009266706

Regarding Wiring Diagram information, refer to 

AV-12, "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 and connectors.

2.

CHECK REAR DOOR SPEAKER SIGNAL CIRCUIT CONTINUITY

1. Disconnect audio unit connector M43 and suspect rear door speaker connector.

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

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

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK REAR DOOR SPEAKER SIGNAL 

1. Connect audio unit connector M43 and suspect rear door speaker connector.

2. Turn ignition switch to ACC.

3. Push audio unit POWER switch.

4. Check signal between terminals of audio unit connector M43.

Audio unit

Rear door speaker

Continuity

Connector

Terminal

Connector

Terminal

M43

4

D207 (LH)

1

Yes

5

2

13

D307 (RH)

1

14

2

Audio unit

Ground

Continuity

Connector

Terminal

M43

4

—

Yes

5

13

14