Nissan Frontier. Manual - part 55

AV-212

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

REAR TWEETER

YES

>> Replace audio amplifier. Refer to 

AV-234, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-233, "Removal and Installation"

.

AV

SUBWOOFER

AV-213

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

SUBWOOFER

Diagnosis Procedure

INFOID:0000000009482158

Regarding Wiring Diagram information, refer to 

AV-177, "Wiring Diagram"

.

1.

CONNECTOR CHECK

Check the audio unit, audio amplifier and subwoofer 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 SUBWOOFER SIGNAL CIRCUIT CONTINUITY

1. Disconnect audio amplifier connector B158 and subwoofer connector.

2. Check continuity between audio amplifier connector B158 and subwoofer connector.

3. Check continuity between audio amplifier connector B158 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness or connectors.

3.

CHECK SUBWOOFER SIGNAL

1. Connect audio amplifier connector B158 and subwoofer connector.

2. Turn ignition switch to ACC.

3. Push audio unit POWER switch.

4. Check signal between the terminals of audio amplifier connector B158.

Audio amplifier

Subwoofer

Continuity

Connector

Terminal

Connector

Terminal

B158

2

B72

1

Yes

18

2

3

3

19

4

Audio amplifier

Ground

Continuity

Connector

Terminal

B158

2

—

No

18

3

19

Audio amplifier connector B158

Condition

Reference value

(+)

(

−)

Terminal

Terminal

AV-214

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

SUBWOOFER

Is the inspection result normal?

YES

>> Replace subwoofer. Refer to 

AV-239, "Removal and Installation"

.

NO

>> GO TO 4.

4.

CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY

1. Disconnect audio unit connector M46 and audio amplifier connector B159.

2. Check continuity between audio unit connector M46 and audio amplifier connector B159.

3. Check continuity between audio unit connector M46 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 audio unit connector M46 and audio amplifier connector B159.

2. Turn ignition switch to ACC.

3. Push audio unit POWER switch.

4. Check signal between the terminals of audio unit connector M46.

Is the inspection result normal?

2

18

Audio signal output

3

19

SKIA0177E

Audio unit

Audio amplifier

Continuity

Connector

Terminal

Connector

Terminal

M46

4

B159

24

Yes

5

8

13

23

14

7

Audio unit

Ground

Continuity

Connector

Terminal

M46

4

—

No

5

13

14

Audio unit connector M46

Condition

Reference value

(+)

(

−)

Terminal

Terminal

4

5

Audio signal output

13

14

SKIA0177E

AV

SUBWOOFER

AV-215

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO WITH AMPLIFIER]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

YES

>> Replace audio amplifier. Refer to 

AV-234, "Removal and Installation"

.

NO

>> Replace audio unit. Refer to 

AV-233, "Removal and Installation"

.