Nissan Teana J32. Manual — part 56
AV
U1250 CAMERA CONTROL UNIT
AV-79
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
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U1250 CAMERA CONTROL UNIT
Description
INFOID:0000000003882728
DTC Logic
INFOID:0000000003882729
Diagnosis Procedure
INFOID:0000000003901201
1.
CHECK CONTINUITY 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.
4.
Check continuity between display unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK AV CONTROL UNIT VOLTAGE
1.
Connect AV control unit connector and camera control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between AV control unit harness connector terminal and ground using an oscilloscope.
Is inspection result normal?
YES
>> 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 supply 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 recogni-
tion signal circuit.
Camera connection recognition sig-
nal circuit.
AV control unit
Camera control unit
Continuity
Connector
Terminals
Connector
Terminals
M130
68
B251
14
Existed
AV control unit
Ground
Continuity
Connector
Terminals
M130
68
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
AV control unit
Connector
Terminal
M130
68
Ground
Connected camera
control unit connector
0 V
Disconnect camera
control unit connector
5 V
AV-80
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
U1250 CAMERA CONTROL UNIT
NO
>> Replace camera control unit.
AV
U1300 AV COMM CIRCUIT
AV-81
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
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U1300 AV COMM CIRCUIT
Description
INFOID:0000000003882731
U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta-
neously, without fail, with the malfunction of control units connected to AV control unit with communication line.
Determine the possible malfunction cause from the table below.
Self-diagnosis results display item
DTC
Display contents of
CONSULT-III
Description
Possible malfunction factor/Action to
take
U1300
U1240
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
When either one of the following items is detected:
• multifunction switch power supply and ground circuits
are malfunctioning.
• AV communication circuits between AV control unit and
multifunction switch are malfunctioning.
• AV communication signal between AV control unit and
multifunction switch is malfunctioning.
• Multifunction switch power supply
and ground circuits
Refer to
• AV communication circuits be-
tween AV control unit and multi-
function switch
U1300
U1252
• AV COMM CIRCUIT
[U1300]
• REAR-CAMERA LAN
CONN [U1252]
With rear control switch
When either one of the following items is detected:
• camera control unit power supply and ground circuits
are malfunctioning.
• AV communication signal between AV control unit and
camera control unit is malfunctioning.
• AV communication circuits between multifunction
switch and rear control switch are malfunctioning.
• AV communication circuits between rear control switch
and camera control unit are malfunctioning.
• Camera control unit power supply
TROL UNIT : Diagnosis Proce-
dure"
.
• AV communication circuits be-
tween multifunction switch and rear
control switch
• AV communication circuits be-
tween rear control switch and cam-
era control unit
Without rear control switch
When either one of the following items is detected:
• camera control unit power supply and ground circuits
are malfunctioning.
• malfunction is detected in AV communication circuits
between multifunction switch and camera control unit.
• AV communication signal between AV control unit and
multifunction switch is malfunctioning.
• Camera control unit power supply
TROL UNIT : Diagnosis Proce-
dure"
.
• AV communication circuits be-
tween multifunction switch and
camera control unit
U1300
U1240
U1252
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• REAR-CAMERA LAN
CONN [U1252]
When either one of the following items is detected:
• AV communication circuits between AV control unit and
multifunction switch are malfunctioning.
• AV communication signal between AV control unit and
multifunction switch is malfunctioning.
AV communication circuits between
AV control unit and multifunction
switch
AV-82
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000003901202
1.
CHECK FUSE
Check for blown fuses.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between AV control unit harness connectors and ground.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between AV control unit and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connectors.
3.
Check continuity between AV control unit harness connectors and ground.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000003901446
1.
CHECK POWER SUPPLY CIRCUIT (DISPLAY SIDE)
Check voltage between display unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
Power source
Fuse No.
Battery
31
Ignition switch ACC or ON
19
Ignition switch ON or START
4
Signal name
Connector No.
Terminal No.
Ignition switch position
Voltage (Approx.)
Battery power supply
M127
19
OFF
Battery voltage
ACC power supply
7
ACC
Ignition signal
M131
104
ON
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M127
20
OFF
Existed
M131
85
Signal name
Connector No.
Terminal No.
Ignition switch position
Voltage (Approx.)
Inverter VCC
M49
2
ACC
9 V
Signal VCC
3
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