Nissan Pathfinder. Manual — part 188
A V
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO VIDEO DISTRIB-
UTOR)
AV-579
< DTC/CIRCUIT DIAGNOSIS >
[PREMIUM AUDIO WITH NAVIGATION]
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COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO VIDEO
DISTRIBUTOR)
Diagnosis Procedure
INFOID:0000000009174779
Regarding Wiring Diagram information, refer to
.
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
.
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
< DTC/CIRCUIT DIAGNOSIS >
[PREMIUM AUDIO WITH NAVIGATION]
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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
.
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
< DTC/CIRCUIT DIAGNOSIS >
[PREMIUM AUDIO WITH NAVIGATION]
IMAGE SWITCH SIGNAL CIRCUIT
IMAGE SWITCH SIGNAL CIRCUIT
Diagnosis Procedure
INFOID:0000000009174782
Regarding Wiring Diagram information, refer to
.
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
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