Nissan Frontier D40. Manual - part 32

AV-120

< COMPONENT DIAGNOSIS >

[PREMIUM AUDIO (CREW CAB)]

REAR DOOR SPEAKER

1.

Connect audio amp. connectors and suspect speaker connec-
tor.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between audio amp. harness connectors B159
terminals with CONSULT-III or oscilloscope.

Are audio signal voltage readings as specified?

YES

>> Replace suspect speaker. Refer to 

AV-170, "Removal

and Installation"

.

NO

>> GO TO 3

3.

PRE-AMP HARNESS CHECK

1.

Disconnect audio unit connector M66 and audio amp. connector
B159.

2.

Check continuity between audio unit harness connector M66 (A)
and audio amp. harness connector B159 (B).

3.

Check continuity between audio unit harness connector M66 (A)
and ground.

Are the continuity test results as specified?

YES

>> GO TO 4

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

4.

PRE-AMP SIGNAL CHECK

Connector

Terminals

Condition

Reference

signal

(+)

(-)

B159

11

27

Receive 
audio sig-
nal

12

28

ALNIA0727GB

SKIA0177E

A

B 

Continuity

Connector

Terminal

Connector

Terminal

M66

13

B159

8

Yes

14

24

15

7

16

23

A

—

Continuity

Connector

Terminal

M66

13

Ground

No

14

15

16

ALNIA0729GB

AV

REAR DOOR SPEAKER

AV-121

< COMPONENT DIAGNOSIS >

[PREMIUM AUDIO (CREW CAB)]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1.

Connect audio unit connector M66 and audio amp. connector
B159.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between audio unit harness connector M66
terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage reading as specified?

YES

>> Replace audio amp. Refer to 

AV-167, "Removal and

Installation"

.

NO

>> Replace audio unit. Refer to 

AV-166, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M66

14

13

Receive 
audio sig-
nal

16

15

AWNIA1804ZZ

SKIA0177E

AV-122

< COMPONENT DIAGNOSIS >

[PREMIUM AUDIO (CREW CAB)]

REAR DOOR TWEETER

REAR DOOR TWEETER

Description

INFOID:0000000005274953

The audio unit sends audio signals to the audio amp. The audio amp. amplifies the audio signals before send-
ing them to the rear door tweeters using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000005274954

Regarding Wiring Diagram information, refer to 

AV-141, "Wiring Diagram"

.

1.

SPEAKER HARNESS CHECK

1.

Disconnect audio amp. connectors B159 and suspect speaker
connector.

2.

Check continuity between audio amp. harness connectors B159
(A) and suspect speaker harness connector (B).

3.

Check continuity between audio amp. harness connectors B159
(A) and ground.

Are the continuity test results as specified?

YES

>> GO TO 2

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

2.

SPEAKER SIGNAL CHECK

A

B

Continuity

Connector

Terminal

Connector

Terminal

B159

11

D208

1

Yes

27

2

12

D308

1

28

2

Connector

Terminal

-

Continuity

B159

11

Ground

No

27

12

28

ALNIA0726GB

AV

REAR DOOR TWEETER

AV-123

< COMPONENT DIAGNOSIS >

[PREMIUM AUDIO (CREW CAB)]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1.

Connect audio amp. connectors and suspect speaker connec-
tor.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between audio amp. harness connectors B159
terminals with CONSULT-III or oscilloscope.

Are audio signal voltage readings as specified?

YES

>> Replace suspect speaker. Refer to 

AV-171, "Removal

and Installation"

.

NO

>> GO TO 3

3.

PRE-AMP HARNESS CHECK

1.

Disconnect audio unit connector M66 and audio amp. connector
B159.

2.

Check continuity between audio unit harness connector M66 (A)
and audio amp. harness connector B159 (B).

3.

Check continuity between audio unit harness connector M66 (A)
and ground.

Are the continuity test results as specified?

YES

>> GO TO 4

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

4.

PRE-AMP SIGNAL CHECK

Connector

Terminals

Condition

Reference

signal

(+)

(-)

B159

11

27

Receive 
audio sig-
nal

12

28

ALNIA0727GB

SKIA0177E

A

B 

Continuity

Connector

Terminal

Connector

Terminal

M66

13

B159

8

Yes

14

24

15

7

16

23

A

—

Continuity

Connector

Terminal

M66

13

Ground

No

14

15

16

ALNIA0729GB