Nissan Pathfinder. Manual - part 121

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-311

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

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

>> Repair or replace harness or connectors.

3.

CHECK CONTROL UNIT GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M42.

3. Check continuity between A/C and AV switch assembly connector M98 terminal 9 and AV control unit con-

nector M42 terminal 10.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness or connectors.

4.

CHECK SWITCH GROUND CIRCUIT

Check continuity between A/C and AV switch assembly connector M98 terminal 1 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connectors.

A/C and AV switch assembly

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M98

3

—

Ignition switch: ACC

Battery voltage

A/C and AV switch assembly

AV control unit

Continuity 

Connector

Terminal

Connector

Terminal

M98

9

M42

10

Yes

A/C and AV switch assembly

Ground

Continuity 

Connector

Terminal

M98

1

—

Yes

AV-312

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

CENTER SPEAKER

CENTER SPEAKER

Diagnosis Procedure

INFOID:0000000009174592

Regarding Wiring Diagram information, refer to 

AV-242, "Wiring Diagram"

.

1.

CONNECTOR CHECK

Check the BOSE speaker amp. 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 CENTER SPEAKER SIGNAL CIRCUIT CONTINUITY

1. Disconnect BOSE speaker amp. connector B130 and center speaker connector.

2. Check continuity between BOSE speaker amp. connector B130 and center speaker connector.

3. Check continuity between BOSE speaker amp. connector B130 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK CENTER SPEAKER SIGNAL

1. Connect BOSE speaker amp. connector B130 and center speaker connector.

2. Turn ignition switch to ACC.

3. Push AV control unit POWER switch.

4. Check signal between BOSE speaker amp. connector B130 and ground.

Is the inspection result normal?

BOSE speaker amp.

Center speaker

Continuity

Connector

Terminal

Connector

Terminal

B130

69

M110

1

Yes

70

2

BOSE speaker amp.

Ground

Continuity

Connector

Terminal

B130

69

—

No

70

BOSE speaker amp. connector B130

Condition

Reference value

(+)

(

−)

Terminal

Terminal

69

70

Audio signal output

SKIB3609E

AV

CENTER SPEAKER

AV-313

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

YES

>> Replace center speaker. Refer to 

AV-376, "Removal and Installation"

.

NO

>> GO TO 4.

4.

CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY

1. Disconnect AV control unit connector M143 and BOSE speaker amp. connector B130.

2. Check continuity between AV control unit connector M143 and BOSE speaker amp. connector B130.

3. Check continuity between AV control unit connector M143 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 M143 and BOSE speaker amp. connector B130.

2. Turn ignition switch to ACC.

3. Push AV control unit POWER switch.

4. Check signal between the terminals of AV control unit connector M143.

Is the inspection result normal?

YES

>> Replace BOSE speaker amp. Refer to 

AV-372, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-365, "Removal and Installation"

.

AV control unit

BOSE speaker amp.

Continuity

Connector

Terminal

Connector

Terminal

M143

113

B130

75

Yes

119

76

109

73

115

74

AV control unit

Ground

Continuity

Connector

Terminal

M143

113

—

No

119

109

115

AV control unit connector M143

Condition

Reference value

(+)

(

−)

Terminal

Terminal

113

119

Audio signal output

109

115

SKIB3609E

AV-314

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITH BOSE]

INSTRUMENT PANEL SPEAKER/TWEETER

INSTRUMENT PANEL SPEAKER/TWEETER

Diagnosis Procedure

INFOID:0000000009174593

Regarding Wiring Diagram information, refer to 

AV-242, "Wiring Diagram"

.

1.

CONNECTOR CHECK

Check the BOSE speaker amp. 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 INSTRUMENT PANEL TWEETER SIGNAL CIRCUIT CONTINUITY

1. Disconnect BOSE speaker amp. connector B129 and suspect instrument panel tweeter connector.

2. Check continuity between BOSE speaker amp. connector B129 and suspect instrument panel tweeter

connector.

3. Check continuity between BOSE speaker amp. connector B122 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK INSTRUMENT PANEL TWEETER SIGNAL

1. Connect BOSE speaker amp. connector B129 and suspect instrument panel tweeter connector.

2. Turn ignition switch to ACC.

3. Push AV control unit POWER switch.

4. Check signal between BOSE speaker amp. connector B129 and ground.

BOSE speaker amp.

Instrument panel tweeter

Continuity

Connector

Terminal

Connector

Terminal

B129

41

M62 (LH)

1

Yes

42

2

45

M73 (RH)

1

46

2

BOSE speaker amp.

Ground

Continuity

Connector

Terminal

B129

41

—

No

42

45

46

BOSE speaker amp.

Condition

Reference value

(+)

(

−)

Terminal

Terminal