2011 INFINITI QX56 Factory Service Manual

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Page 313 of 5598

INFINITI QX56 2011 Factory Service Manual
AV
POWER SUPPLY AND GROUND CIRCUITAV-165
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
SONAR CONTROL UNIT (WITH AROUND VIEW MONITOR)
SONAR CONTROL UNIT (WITH AROUND VIEW MONITOR) : Diagnosi

Page 314 of 5598

INFINITI QX56 2011 Factory Service Manual
AV-166
< DTC/CIRCUIT DIAGNOSIS >
RGB DIGITAL IMAGE SIGNAL CIRCUIT
RGB DIGITAL IMAGE SIGNAL CIRCUIT
DescriptionINFOID:0000000006216326
Transmit the image displayed with AV control unit with RGB digita

Page 315 of 5598

INFINITI QX56 2011 Factory Service Manual
AV
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DIS-
PLAY UNIT)
AV-167
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
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K L
M B A
O P
COMPOSITE IMAGE SIGNAL CIRCUI T (AV CONTROL UNIT TO FRONT
DIS

Page 316 of 5598

INFINITI QX56 2011 Factory Service Manual
AV-168
< DTC/CIRCUIT DIAGNOSIS >
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO VIDEO DISTRIB-
UTOR)
COMPOSITE IMAGE SIGNAL CIRCUI T (AV CONTROL UNIT TO VIDEO
DISTRIBUTOR)
DescriptionINFOID:00000

AV-168
< DTC/CIRCUIT DIAGNOSIS >
COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO VIDEO DISTRIB-
UTOR)
COMPOSITE IMAGE SIGNAL CIRCUI T (AV CONTROL UNIT TO VIDEO
DISTRIBUTOR)
DescriptionINFOID:0000000006216330
DVD is played by inserting DVD into the AV control unit.
DVD image signals are transmitted to the front display unit and video distributor.
AV control unit receives the image signal from the front auxiliary input jacks and then transmits it to the front
display unit.
AV control unit receives the image signal from the USB (video data) and then transmits it to the front display
unit and video distributor.
Video distributor receives the image signal from the AV control unit and then transmits it to the headrest dis-
play unit.
Diagnosis ProcedureINFOID:0000000006216331
1.CHECK CONTINUITY COMPOS ITE IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector and video distributor connector.
3. Check continuity between AV control unit har ness connector and video distributor harness connector.
4. Check continuity between video distributor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK COMPOSITE IMAGE SIGNAL
1. Connect AV control unit connector and video distributor connector.
2. Turn ignition switch ON.
3. Check signal between video distributor harness connector and ground.
Is the inspection result normal?
YES >> Replace video distributor. Refer to AV-215, "Removal and Installation".
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
AV control unit Video distributor
Continuity
Connector Terminal Connector Terminal
M209 34 M218 34 Existed
Video distributor GroundContinuity
Connector Terminal
M218 34 Not existed
(+) (− ) Condition Reference value
Video distributor
Connector Terminal
M218 34 Ground When DVD, USB or front AUX im-
age is displayed on headrest dis-
play unit LH or RH.
SKIB2251J
Revision: 2010 May2011 QX56

Page 317 of 5598

INFINITI QX56 2011 Factory Service Manual
AV
COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO HEADREST
DISPLAY UNIT)
AV-169
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO HEA

Page 318 of 5598

INFINITI QX56 2011 Factory Service Manual
AV-170
< DTC/CIRCUIT DIAGNOSIS >
COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO HEADREST
DISPLAY UNIT)
*1: Headrest display unit LH
*2: Headrest display unit RH
Is the inspection result normal

Page 319 of 5598

INFINITI QX56 2011 Factory Service Manual
AV
AUX IMAGE SIGNAL CIRCUIT (FRONT AUXILIARY INPUT JACKS TO AV CON-
TROL UNIT)
AV-171
< DTC/CIRCUIT DIAGNOSIS >
C
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F
G H
I
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K L
M B A
O P
AUX IMAGE SIGNAL CIRCUIT (FRONT AUXILIARY INPUT JACKS TO

Page 320 of 5598

INFINITI QX56 2011 Factory Service Manual
AV-172
< DTC/CIRCUIT DIAGNOSIS >
AUX IMAGE SIGNAL CIRCUIT (REAR AUXILIARY INPUT JACKS TO VIDEO DIS-
TRIBUTOR)
AUX IMAGE SIGNAL CIRCUIT (REAR AUXILIARY INPUT JACKS TO VID-
EO DISTRIBUTOR)
Description

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