Nissan Pathfinder. Manual - part 85

AV

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

AV-167

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITHOUT BOSE]

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VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009174486

Regarding Wiring Diagram information, refer to 

AV-88, "Wiring Diagram"

.

1.

CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M136 and display unit connector.

3. Check continuity between AV control unit connector M136 terminal 74 and display unit connector M93 ter-

minal 20.

4. Check continuity between AV control unit connector M136 terminal 74 and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

1. Connect AV control unit connector M136 and display unit connector.

2. Turn ignition switch ON.

3. Check signal between display unit connector M93 terminal 20 and ground.

Is inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-187, "Removal and Installation"

.

NO

>> Replace display unit. Refer to 

AV-191, "Removal and Installation"

.

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M136

74

M93

20

Yes

AV control unit

Ground

Continuity

Connector

Terminal

M136

74

No

Display unit

Ground

Reference value

(+)

(

−)

Connector

Terminal

M93

20

—

SKIB3598E

AV-168

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITHOUT BOSE]

COMPOSITE IMAGE SIGNAL CIRCUIT

COMPOSITE IMAGE SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009174487

Regarding Wiring Diagram information, refer to 

AV-88, "Wiring Diagram"

.

1.

CHECK COMPOSITE IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M136 and display unit connector.

3. Check continuity between AV control unit connector M136 terminal 53 and display unit connector M93 ter-

minal 15.

4. Check continuity between AV control unit connector M136 terminal 53 and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK COMPOSITE IMAGE SIGNAL GROUND CIRCUIT CONTINUITY

Check continuity between AV control unit connector M136 terminal 54 and display unit connector M93 terminal

4.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK COMPOSITE IMAGE SIGNAL

1. Connect AV control unit connector M136 and display unit connector.

2. Turn ignition switch ON.

3. Check signal between display unit connector M93 terminal 15 and ground.

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M136

53

M93

15

Yes

AV control unit

Ground

Continuity

Connector

Terminal

M136

53

No

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M136

54

M93

4

Yes

Display unit

Ground

Condition

Reference value

(+)

(

−)

Connector

Terminal

M93

15

—

Camera image dis-

played.

SKIB2251J

AV

COMPOSITE IMAGE SIGNAL CIRCUIT

AV-169

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITHOUT BOSE]

C

D

E

F

G

H

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J

K

L

M

B

A

O

P

Is inspection result normal?

YES

>> Replace display unit. Refer to 

AV-191, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-187, "Removal and Installation"

.

AV-170

< DTC/CIRCUIT DIAGNOSIS >

[MID AUDIO WITHOUT BOSE]

AUX IMAGE SIGNAL CIRCUIT

AUX IMAGE SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009174488

Regarding Wiring Diagram information, refer to 

AV-88, "Wiring Diagram"

.

1.

CHECK AUX IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M137 and front auxiliary input jacks connector.

3. Check continuity between AV control unit connector M137 terminal 83 and front auxiliary input jacks con-

nector M205 terminal 7.

4. Check continuity between AV control unit connector M137 terminal 83 and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK AUX IMAGE SIGNAL GROUND CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M137 and front auxiliary input jacks connector.

3. Check continuity between AV control unit connector M137 terminal 91 and front auxiliary input jacks con-

nector M205 terminal 8.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK AUX IMAGE SIGNAL

1. Connect AV control unit connector M137 and front auxiliary input jacks connector.

2. Turn ignition switch ON.

3. Check signal between front auxiliary input jacks connector M205 terminal 7 and ground.

AV control unit

Front auxiliary input jacks

Continuity

Connector

Terminal

Connector

Terminal

M137

83

M205

7

Yes

AV control unit

Ground

Continuity

Connector

Terminal

M137

83

No

AV control unit

Front auxiliary input jacks

Continuity

Connector

Terminal

Connector

Terminal

M137

91

M205

8

Yes