Infiniti QX56 (JA60). Manual - part 70

 

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Infiniti QX56 (JA60). Manual - part 70

 

 

AV-88

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

FRONT TWEETER

FRONT TWEETER

Description

INFOID:0000000005146327

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the

audio signals before sending them to the tweeters using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000005146328

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

HARNESS CHECK

1. Disconnect BOSE speaker amp. connector M112 and suspect

tweeter connector.

2. Check continuity between BOSE speaker amp. harness connec-

tor M112 (A) and suspect tweeter harness connector (B).

3. Check continuity between BOSE speaker amp. harness connec-

tor M112 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 2.

NO

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

• Repair harness or connector.

2.

FRONT TWEETER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

M112

4

D12

1

Yes

5

2

8

D112

1

13

2

A

Continuity

Connector

Terminal

M112

4

Ground

No

5

8

13

ALNIA0342GB

AV

FRONT TWEETER

AV-89

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1. Connect BOSE speaker amp. connector M112 and suspect

tweeter connector.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between BOSE speaker amp. harness connec-

tor M112 terminals with CONSULT-III or oscilloscope.

Is audio signal voltage as specified?

YES

>> Replace suspect tweeter. Refer to 

AV-172, "Removal

and Installation"

.

NO

>> GO TO 3.

3.

HARNESS CHECK

1. Disconnect AV control unit connector M42 and BOSE speaker

amp. connector M113.

2. Check continuity between AV control unit harness connector

M42 (A) and BOSE speaker amp. harness connector M113 (B).

3. Check continuity between AV control unit harness connector

M42 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 4.

NO

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

• Repair harness or connector.

4.

FRONT SPEAKER SIGNAL CHECK

Connec-

tor

Terminal

Condition

Reference

signal

(+)

(-)

M112

4

5

Receive 
audio sig-
nal

8

13

ALNIA0343GB

SKIA0177E

A

B

Continuity

Connector

Terminal

Connector

Terminal

M42

2

M113

18

Yes

3

32

11

19

12

20

Continuity

Connector

Terminal

M42

2

Ground

No

3

11

12

ALNIA0416GB

AV-90

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

FRONT TWEETER

1. Connect AV control unit connector and BOSE speaker amp.

connector.

2. Turn ignition switch ACC.

3. Push “POWER” switch.

4. Check the signal between AV control unit harness connector

M42 terminals with CONSULT-III or oscilloscope.

Are the audio signal voltage readings as specified?

YES

>> Replace BOSE speaker amp. Refer to 

AV-182,

"Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-169, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M42

2

3

Receive 
audio sig-
nal

11

12

ALNIA0417GB

SKIA0177E

AV

CENTER SPEAKER

AV-91

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

CENTER SPEAKER

Description

INFOID:0000000005146329

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the

audio signals before sending them to the center speaker using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000005146330

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

HARNESS CHECK

1. Disconnect BOSE speaker amp. connector M113 and center

speaker connector M110.

2. Check continuity between BOSE speaker amp. harness connec-

tor M113 (A) and center speaker harness connector M110 (B).

3. Check continuity between BOSE speaker amp. harness connec-

tor M113 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 2.

NO

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

• Repair harness or connector.

2.

CENTER SPEAKER SIGNAL CHECK

1. Connect BOSE speaker amp. connector M113 and center

speaker connector M110.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between BOSE speaker amp. harness connec-

tor M113 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage reading as specified?

A B

Continuity

Connector

Terminal

Connector

Terminal

M113

15

M110

1

Yes

28

2

Continuity

Connector

Terminal

M113

15

Ground

No

28

ALNIA0349GB

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M113

15

28

Receive 
audio sig-
nal

ALNIA0842GB

SKIA0177E

 

 

 

 

 

 

 

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