Nissan Murano Z51. Manual — part 80
AV
U1243 DISPLAY UNIT
AV-99
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK COMMUNICATION SIGNAL
1.
Connect front display unit connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between front display unit harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit.
4.
CHECK COMMUNICATION SIGNAL
Check signal between front display unit harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace front display unit.
(+)
(
−
)
Condition
Signal
Front display unit
Connector
Terminal
M49
11
Ground
When adjusting display bright
ness.
PKIB5039J
(+)
(
−
)
Condition
Signal
Front display unit
Connector
Terminal
M49
22
Ground
When adjusting display bright
ness.
PKIB5039J
AV-100
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
U1247 REAR DISP CONN
U1247 REAR DISP CONN
Description
INFOID:0000000005528495
DTC Logic
INFOID:0000000005528496
Diagnosis Procedure
INFOID:0000000005528497
1.
CHECK REAR DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check rear display unit power supply and ground circuits. Refer to
AV-108, "REAR DISPLAY UNIT : Diagnosis
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK CONTINUITY SERIAL COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect rear display unit connector and video distributor connector.
3.
Check continuity between rear display unit harness connector and video distributor harness connector.
4.
Check continuity between rear display unit harness connector and ground.
Part name
Description
REAR DISPLAY UNIT
• The rear display unit has functions of remote control receiver and headphone
amp.
• Transmits the headphone sound signal when receiving headphone ON signal
from the video distributor.
• Headphone sound signal is input from DVD player via hard wires and outputs
the signal to headphones via infrared wireless communication.
• Receives the operation signal from the remote controller and transmits the sig-
nal to the video distributor via serial communication.
• Rear display image is controlled by the serial communication from video dis-
tributor.
• RGB image signal is input from video distributor (RGB image and RGB area).
Composite image signal (DVD and auxiliary images) is input from the video
distributor.
• Synchronize signal (HP, VP) is output to video distributor.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1247
REAR DISP CONN
[U1247]
When either one of the following items are detected:
• rear display unit power supply and ground circuits are
malfunctioning.
• serial communication circuits between video distributor
and rear display unit are malfunctioning.
• serial communication signal between video distributor
and rear display unit is malfunctioning.
• Rear display unit power supply and
ground circuits.
• Serial communication circuits be-
tween video distributor and rear
display unit.
Rear display unit
Video distributor
Continuity
Connector
Terminals
Connector
Terminals
R152
9
M257
39
Existed
10
40
AV
U1247 REAR DISP CONN
AV-101
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK SERIAL COMMUNICATION SIGNAL
1.
Connect rear display unit connector and video distributor connector.
2.
Turn ignition switch ON.
3.
Check signal between rear display unit harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace rear display unit.
4.
CHECK SERIAL COMMUNICATION SIGNAL
Check signal between rear display unit harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace video distributor.
Rear display unit
Ground
Continuity
Connector
Terminals
R152
9
Not existed
10
(+)
(
−
)
Condition
Signal
Front display unit
Connector
Terminal
R152
9
Ground
Rear seat remote controller opera-
tion.
PKIB5039J
(+)
(
−
)
Condition
Signal
Front display unit
Connector
Terminal
R152
10
Ground
Rear seat remote controller opera-
tion.
PKIB5039J
AV-102
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
U1250 CAMERA CONTROL UNIT
U1250 CAMERA CONTROL UNIT
Description
INFOID:0000000005528498
DTC Logic
INFOID:0000000005528499
Diagnosis Procedure
INFOID:0000000005528500
1.
CHECK CAMERA-CONNECTION RECOGNITION SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and camera control unit connector.
3.
Check continuity between AV control unit harness connector and camera control unit harness connector.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK AV CONTROL UNIT VOLTAGE
1.
Connect AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace camera control unit.
NO
>> Replace AV control unit.
Part name
Description
CAMERA CONTROL UNIT
• Camera image signal is input from rear view camera. Camera image signal
output to AV control unit.
• Power (camera ON signal) is transmitted to rear view camera.
• AV control unit recognizes the presence of camera system with camera con-
nection recognition signal.
• Camera control unit is connected via AV communication.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1250
CAMERA CONT. CONN
[U1250]
Malfunction is detected in camera-connection recognition
signal circuit.
Camera-connection recognition sig-
nal circuit.
AV control unit
Camera control unit
Continuity
Connector
Terminal
Connector
Terminal
M130
68
B60
14
Existed
(+)
(
−
)
Voltage
(Approx.)
AV control unit
Connector
Terminal
M130
68
Ground
5.0 V
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