Nissan Frontier. Manual — part 79

AV-308

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

FRONT DOOR SPEAKER

Is the inspection result normal?

YES

>> Replace front door speaker. Refer to

AV-351, "Removal and Installation"

.

NO

>> GO TO 4.

4.

CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY

1. Disconnect AV control unit connector M96 and audio amplifier connector B159.

2. Check continuity between AV control unit connector M96 and audio amplifier connector B159.

3. Check continuity between AV control unit connector M96 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connectors.

5.

CHECK PRE-AMP SIGNAL

1. Connect AV control unit connector M96 and audio amplifier connector B159.

2. Turn ignition switch to ACC.

3. Push AV control unit POWER switch.

4. Check signal between the terminals of AV control unit connector M96.

Is the inspection result normal?

15

31

Audio signal output

16

32

SKIA0177E

AV control unit

Audio amplifier

Continuity

Connector

Terminal

Connector

Terminal

M96

2

B159

22

Yes

3

6

11

21

12

5

AV control unit

Ground

Continuity

Connector

Terminal

M96

2

—

No

3

11

12

AV control unit connector M96

Condition

Reference value

(+)

(

−)

Terminal

Terminal

2

3

Audio signal output

11

12

SKIA0177E

AV

FRONT DOOR SPEAKER

AV-309

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

YES

>> Replace audio amplifier. Refer to

AV-349, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to

AV-348, "Removal and Installation"

.

AV-310

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

FRONT TWEETER

FRONT TWEETER

Diagnosis Procedure

INFOID:0000000009482234

Regarding Wiring Diagram information, refer to

AV-264, "Wiring Diagram"

.

1.

CONNECTOR CHECK

Check the AV control unit, audio amplifier 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 TWEETER SIGNAL CIRCUIT CONTINUITY

1. Disconnect audio amplifier connector B159 and suspect front tweeter connector.

2. Check continuity between audio amplifier connector B159 and suspect front tweeter connector.

3. Check continuity between audio amplifier connector B159 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness or connectors.

3.

CHECK FRONT TWEETER SIGNAL

1. Connect audio amplifier connector B159 and suspect front tweeter connector.

2. Turn ignition switch to ACC.

3. Push AV control unit POWER switch.

4. Check signal between the terminals of audio amplifier connector B159.

Audio amplifier

Front tweeter

Continuity

Connector

Terminal

Connector

Terminal

B159

14

M109 (LH)

1

Yes

30

2

13

M111 (RH)

1

29

2

Audio amplifier

Ground

Continuity

Connector

Terminal

B159

14

—

No

30

13

29

Audio amplifier connector B159

Condition

Reference value

(+)

(

−)

Terminal

Terminal

AV

FRONT TWEETER

AV-311

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> Replace front tweeter. Refer to

AV-350, "Removal and Installation"

.

NO

>> GO TO 4.

4.

CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY

1. Disconnect AV control unit connector M96 and audio amplifier connector B159.

2. Check continuity between AV control unit connector M96 and audio amplifier connector B159.

3. Check continuity between AV control unit connector M96 and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connectors.

5.

CHECK PRE-AMP SIGNAL

1. Connect AV control unit connector M96 and audio amplifier connector B159.

2. Turn ignition switch to ACC.

3. Push AV control unit POWER switch.

4. Check signal between the terminals of AV control unit connector M96.

Is the inspection result normal?

14

30

Audio signal output

13

29

SKIA0177E

AV control unit

Audio amplifier

Continuity

Connector

Terminal

Connector

Terminal

M96

2

B159

22

Yes

3

6

11

21

12

5

AV control unit

Ground

Continuity

Connector

Terminal

M96

2

—

No

3

11

12

AV control unit connector M96

Condition

Reference value

(+)

(

−)

Terminal

Terminal

2

3

Audio signal output

11

12

SKIA0177E