Nissan Pathfinder. Manual - part 188

A V

COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO VIDEO DISTRIB-

UTOR)

AV-579

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COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO VIDEO
DISTRIBUTOR)

Diagnosis Procedure

INFOID:0000000009174779

Regarding Wiring Diagram information, refer to 

AV-442, "Wiring Diagram"

.

1.

CHECK COMPOSITE IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M164 and video distributor connector B25.

3. Check continuity between AV control unit connector M164 and video distributor connector B25.

4. Check continuity between AV control unit connector M164 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK COMPOSITE IMAGE SIGNAL

1. Connect AV control unit connector M164 and video distributor connector B25.

2. Turn ignition switch ON.

3. Check the signal between the terminals of video distributor connector B25.

Is the inspection result normal?

YES

>> Replace video distributor. Refer to 

AV-633, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-611, "Removal and Installation"

.

AV control unit

Video distributor

Continuity

Connector

Terminal

Connector

Terminal

M164

107

B25

34

Yes

105

33

AV control unit

Ground

Continuity

Connector

Terminal

M164

107

—

No

Video distributor connector B25

Condition

Reference value

(+)

(

−)

Terminal

Terminal

34

33

DVD, USB or front auxiliary in-

put jacks image is displayed on 

headrest display.

SKIB2251J

AV-580

< DTC/CIRCUIT DIAGNOSIS >

[PREMIUM AUDIO WITH NAVIGATION]

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO HEADREST 

DISPLAY UNIT)

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO HEAD-
REST DISPLAY UNIT)

Diagnosis Procedure

INFOID:0000000009174780

Regarding Wiring Diagram information, refer to 

AV-442, "Wiring Diagram"

.

1.

CHECK COMPOSITE IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect video distributor connector B24 and headrest display unit connectors.

3. Check continuity between video distributor connector B24 and headrest display unit connectors.

4. Check continuity between video distributor connector B24 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK COMPOSITE IMAGE SIGNAL

1. Connect video distributor connector B24 and headrest display unit connectors.

2. Turn ignition switch ON.

3. Check the signal between the terminals of headrest display unit connectors.

Is the inspection result normal?

YES

>> Replace headrest display unit. Refer to 

AV-616, "Removal and Installation"

.

NO

>> Replace video distributor. Refer to 

AV-633, "Removal and Installation"

.

Video distributor

Headrest display unit

Continuity

Connector

Terminal

Connector

Terminal

B24

32

B223 (driver seat)

5

Yes

31

21

28

B317 (passenger seat)

5

Yes

27

21

Video distributor

Ground

Continuity

Connector

Terminal

B24

32

—

No

28

Headrest display unit

Condition

Reference value

Connector

(+)

(

−)

Terminal

Terminal

B223 (driver seat)

5

21

DVD, USB or front 
auxiliary input jacks 
image is displayed on 
headrest display.

B317 (passenger 

seat)

5

21

SKIB2251J

A V

AUX IMAGE SIGNAL CIRCUIT (FRONT AUXILIARY INPUT JACKS TO AV CON-

TROL UNIT)

AV-581

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AUX IMAGE SIGNAL CIRCUIT (FRONT AUXILIARY INPUT JACKS TO AV
CONTROL UNIT)

Diagnosis Procedure

INFOID:0000000009174781

Regarding Wiring Diagram information, refer to 

AV-442, "Wiring Diagram"

.

1.

CHECK AUX IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect AV control unit connector M163 and front auxiliary input jacks connector M205.

3. Check continuity between AV control unit connector M163 and front auxiliary input jacks connector M205.

4. Check continuity between AV control unit connector M163 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK AUX IMAGE SIGNAL

1. Connect AV control unit connector M163 and front auxiliary input jacks connector M205.

2. Turn ignition switch ON.

3. Check the signal between the terminals of front auxiliary input jacks connector M205.

Is the inspection result normal?

YES

>> Replace front auxiliary input jacks. Refer to 

AV-627, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-611, "Removal and Installation"

.

AV control unit

Front auxiliary input jacks

Continuity

Connector

Terminal

Connector

Terminal

M163

91

M205

7

Yes

92

8

AV control unit

Ground

Continuity

Connector

Terminal

M163

91

—

No

Front auxiliary input jacks connector M205

Condition

Reference value

(+)

(

−)

Terminal

Terminal

7

8

Front auxiliary input jacks im-

age is displayed.

SKIB2251J

AV-582

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IMAGE SWITCH SIGNAL CIRCUIT

IMAGE SWITCH SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000009174782

Regarding Wiring Diagram information, refer to 

AV-442, "Wiring Diagram"

.

1.

CHECK CONTINUITY IMAGE SWITCH SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect video distributor connector B24 and headrest display unit connectors.

3. Check continuity between video distributor connector B24 and headrest display unit connectors.

4. Check continuity between video distributor connector B24 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK VIDEO DISTRIBUTOR VOLTAGE 

1. Connect video distributor connector B24 and headrest display unit connectors.

2. Turn ignition switch ON.

3. Check the voltage between the terminals of video distributor connector B24.

Is the inspection result normal?

YES

>> Replace headrest display unit. Refer to 

AV-616, "Removal and Installation"

.

NO

>> Replace video distributor. Refer to 

AV-633, "Removal and Installation"

.

Video distributor

Headrest display unit

Continuity

Connector

Terminal

Connector

Terminal

B24

10

B223 (driver seat)

7

Yes

7

23

9

B317 (passenger seat)

7

5

23

Video distributor

Ground

Continuity

Connector

Terminal

B24

10

—

No

9

Video distributor connector B24

Condition

Voltage

(Approx.)

(+)

(

−)

Terminal

Terminal

10

7

DVD, USB or front auxiliary in-
put jacks image is displayed on 
headrest display.

0.5 V

DVD, USB or rear auxiliary in-
put jacks image is displayed on 
headrest display.

4.5 V

9

5

DVD, USB or front auxiliary in-
put jacks image is displayed on 
headrest display.

0.5 V

DVD, USB or rear auxiliary in-
put jacks image is displayed on 
headrest display.

4.5 V