Infiniti QX56 (JA60). Manual — part 68
AV-80
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
RGB (B: BLUE) SIGNAL CIRCUIT
RGB (B: BLUE) SIGNAL CIRCUIT
Description
INFOID:0000000005146315
Transmit the image displayed with AV control unit with RGB signal to the display unit.
Diagnosis Procedure
INFOID:0000000005146316
Regarding Wiring Diagram information, refer to
.
1.
CHECK CONTINUITY RGB (B: BLUE) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M43.
3. Check continuity between display unit harness connector M93
(A) terminal 18 and AV control unit harness connector M43 (B)
terminal 23.
4. Check continuity between display unit harness connector M93
(A) terminal 18 and ground.
Are continuity results as specified?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK RGB (B: BLUE) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 18 and ground.
Are voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-171, "Removal and Installation"
NO
>> Replace AV control unit. Refer to
AV-169, "Removal and Installation"
.
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
18
M43
23
Yes
A
—
Continuity
Connector
Terminal
M93
18
Ground
No
ALNIA0411GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
18
Ground
Receive
audio sig-
nal
ALNIA0387GB
SKIB2237J
AV
RGB SYNCHRONIZING SIGNAL CIRCUIT
AV-81
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
RGB SYNCHRONIZING SIGNAL CIRCUIT
Description
INFOID:0000000005146317
Transmit the RGB synchronizing signal to the display unit so as to synchronize the RGB image displayed with
AV control unit.
Diagnosis Procedure
INFOID:0000000005146318
Regarding Wiring Diagram information, refer to
.
1.
CHECK CONTINUITY RGB SYNCHRONIZING SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M43.
3. Check continuity between display unit harness connector M93
(A) terminal 19 and AV control unit harness connector M43 (B)
terminal 25.
4. Check continuity between display unit harness connector M93
(A) terminal 19 and ground.
Are continuity results as specified?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK RGB SYNCHRONIZING SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 19 and ground.
Are voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-171, "Removal and Installation"
NO
>> Replace AV control unit. Refer to
AV-169, "Removal and Installation"
.
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
19
M43
25
Yes
A
—
Continuity
Connector
Terminal
M93
19
Ground
No
ALNIA0412GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
19
Ground
Receive
audio sig-
nal
ALNIA0389GB
SKIB3603E
AV-82
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
RGB AREA (YS) SIGNAL CIRCUIT
RGB AREA (YS) SIGNAL CIRCUIT
Description
INFOID:0000000005146319
Transmits the display area of RGB image displayed by AV control unit with RGB area (YS) signal to display
unit.
Diagnosis Procedure
INFOID:0000000005146320
Regarding Wiring Diagram information, refer to
.
1.
CHECK CONTINUITY RGB AREA (YS) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M43.
3. Check continuity between display unit harness connector M93
(A) terminal 9 and AV control unit harness connector M43 (B)
terminal 27.
4. Check continuity between display unit harness connector M93
(A) terminal 9 and ground.
Are continuity results as specified?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK RGB SYNCHRONIZING SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 9 and ground.
Are voltage readings as specified?
YES
>> Replace display unit. Refer to
AV-171, "Removal and Installation"
NO
>> Replace AV control unit. Refer to
AV-169, "Removal and Installation"
.
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
9
M43
27
Yes
A
—
Continuity
Connector
Terminal
M93
9
Ground
No
ALNIA0413GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
9
Ground
Receive
audio sig-
nal
ALNIA0391GB
PKIB4948J
AV
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
AV-83
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
Description
INFOID:0000000005146321
In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.
Diagnosis Procedure
INFOID:0000000005146322
Regarding Wiring Diagram information, refer to
.
1.
CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit con-
nector M43.
3. Check continuity between display unit harness connector M93
(A) terminal 8 and AV control unit harness connector M43 (B)
terminal 28.
4. Check continuity between display unit harness connector M93
(A) terminal 8 and ground.
Are continuity results as specified?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter-
minal 8 and ground.
Are voltage readings as specified?
YES
>> Replace AV control unit. Refer to
AV-169, "Removal and Installation"
.
NO
>> Replace display unit. Refer to
AV-171, "Removal and Installation"
A
B
Continuity
Connector
Terminal
Connector
Terminal
M93
8
M43
28
Yes
A
—
Continuity
Connector
Terminal
M93
8
Ground
No
ALNIA0414GB
(+)
(-)
Condition
Reference signal
Connector
Terminal
M93
8
Ground
Receive
audio sig-
nal
ALNIA0396GB
SKIB3601E
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