Nissan Xterra. Manual — part 9

AV-28

< 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 B141.

3. Check voltage between Bluetooth

®

control unit connector B141 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 B141 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connectors.

MICROPHONE
MICROPHONE : Diagnosis Procedure

INFOID:0000000010247113

Regarding Wiring Diagram information, refer to

AV-14, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check voltage between microphone connector R8 and ground.

Terminal No.

Signal name

Fuse No.

1

Battery power supply

29 (20A)

2

ACC power supply

4 (10A)

3

Ignition power supply

12 (10A)

Bluetooth

®

control unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

B141

1

—

Ignition switch: OFF

Battery voltage

2

Ignition switch: ON

3

Bluetooth

®

control unit

Ground

Continuity

Connector

Terminal

B141

4

—

Yes

20

Microphone

Ground

Value (Approx.)

Connector

Terminal

R8

4

—

5V

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-29

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT CONTINUITY

1. Turn ignition switch OFF.
2. Disconnect microphone connector and Bluetooth

®

control unit connector B141.

3. Check continuity between microphone connector R8 and Bluetooth

®

control unit connector B141.

4. Check continuity between microphone connector R8 and ground.

Is the inspection result normal?

YES

>> Replace the Bluetooth

®

control unit. Refer to

AV-53, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.
2. Disconnect microphone connector and Bluetooth

®

control unit connector B141.

3. Check continuity between microphone connector R8 and Bluetooth

®

control unit connector B141.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connectors.

Microphone

Bluetooth

®

control unit

Continuity

Connector

Terminal

Connector

Terminal

R8

4

B141

29

Yes

Microphone

—

Continuity

Connector

Terminal

R8

4

Ground

No

Microphone

Bluetooth

®

control unit

Continuity

Connector

Terminal

Connector

Terminal

R8

2

B141

8

Yes

AV-30

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO]

FRONT DOOR SPEAKER

FRONT DOOR SPEAKER

Description

INFOID:0000000010247114

The audio unit sends audio signals to the front door speakers using the front door speaker circuits.

Diagnosis Procedure

INFOID:0000000010247115

Regarding Wiring Diagram information, refer to

AV-14, "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

D12 (LH)

1

Yes

3

2

11

D112 (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

AV

FRONT DOOR SPEAKER

AV-31

< DTC/CIRCUIT DIAGNOSIS >

[BASE 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-50, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to

AV-48, "Removal and Installation"

.

2

3

Audio signal output

11

12

SKIB3609E