Nissan Teana J32. Manual — part 95
AV
U1300 AV COMM CIRCUIT
AV-235
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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U1300 AV COMM CIRCUIT
Description
INFOID:0000000003765676
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
TION SWITCH : Diagnosis Proce-
dure"
.
• AV communication circuits be-
tween AV control unit and multi-
function switch.
U1300
U1248
• AV COMM CIRCUIT
[U1300]
• DVD DECK CONN
[U1248]
When either one of the following items is detected:
• DVD player power supply and ground circuits are mal-
functioning.
• AV communication circuits between BOSE amp. and
DVD player are malfunctioning.
• AV communication signal between AV control unit and
DVD player is malfunctioning.
• DVD player power supply and
• AV communication circuits be-
tween BOSE amp. and DVD player.
U1300
U124E
• AV COMM CIRCUIT
[U1300]
• AMP CONN [U124E]
When either one of the following items is detected:
• BOSE amp. power supply and ground circuits are mal-
functioning.
• AV communication signal between AV control unit and
BOSE amp. is malfunctioned.
BOSE amp. power supply and ground
circuits.
Refer to
U1300
U1252
• AV COMM CIRCUIT
[U1300]
• REAR-CAMERA LAN
CONN [U1252]
Camera control unit power supply and ground circuits are
malfunctioning.
Camera control unit power supply
and ground circuits.
Refer to
TROL UNIT : Diagnosis Procedure"
U1300
U1248
U124E
• AV COMM CIRCUIT
[U1300]
• DVD DECK CONN
[U1248]
• AMP CONN [U124E]
When either one of the following items is detected:
• AV communication circuits between NAVI control unit
and BOSE amp. are malfunctioning.
• AV communication signal between NAVI control unit
and BOSE amp. is malfunctioning.
AV communication circuits between
NAVI control unit and BOSE amp.
U1300
U1248
U124E
U1252
• AV COMM CIRCUIT
[U1300]
• DVD DECK CONN
[U1248]
• AMP CONN [U124E]
• REAR-CAMERA LAN
CONN [U1252]
With rear control switch
When either one of the following items is detected:
• malfunction is detected in AV communication circuits
between rear control switch and camera control unit.
• malfunction is detected in AV communication circuits
between camera control unit and BOSE amp.
• 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:
• malfunction is detected in AV communication circuits
between multifunction switch and camera control unit.
• malfunction is detected in AV communication circuits
between camera control unit and BOSE amp.
AV communication circuits between
multifunction switch and camera con-
trol unit.
U1300
U1240
U1248
U124E
U1252
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• DVD DECK CONN
[U1248]
• AMP CONN [U124E]
• 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-236
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000003901178
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:0000000003901179
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
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-237
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
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2.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect the harness connector between display unit and AV control unit.
3.
Check continuity between display unit harness connector and AV control unit harness connector.
4.
Check continuity between display unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE)
1.
Connect the AV control unit harness connector.
2.
Turn ignition switch ACC.
3.
Check voltage between AV control unit harness connector and ground.
Is inspection result normal?
YES
>> INSPECTED END.
NO
>> Replace AV control unit.
4.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect display unit connector.
3.
Check continuity between display unit harness connector and ground.
Is inspection result normal?
YES
>> INSPECTED END.
NO
>> Repair harness or connector.
MULTIFUNCTION SWITCH
MULTIFUNCTION SWITCH : Diagnosis Procedure
INFOID:0000000003901181
1.
CHECK FUSE
Check for blown fuses.
Is inspection result normal?
Signal name
Display unit
AV control unit
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
Ground
M49
2
M129
59
Existed
3
47
Signal name
Display unit
Ground
Continuity
Connector No.
Terminal No.
Inverter VCC
M49
2
Not existed
Signal VCC
3
Signal name
Connector No.
Terminal No.
Ignition switch position
Voltage (Approx.)
Inverter VCC
M129
59
ACC
9 V
Signal VCC
47
Signal name
Display unit
Ground
Continuity
Connector No.
Terminal No.
Ground
M49
1
Existed
Power source
Fuse No.
Ignition switch ACC or ON
19
AV-238
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between multifunction switch harness connector and ground.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between multifunction switch and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect multifunction switch connector.
3.
Check continuity between multifunction switch harness connector and ground.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
BOSE AMP.
BOSE AMP. : Diagnosis Procedure
INFOID:0000000003901182
1.
CHECK FUSE
Check for blown fuses.
Is the 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 BOSE amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between BOSE amp. and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BOSE amp. connector.
3.
Check continuity between BOSE amp. harness connector and ground.
Signal name
Connector No.
Terminal No.
Ignition switch position
Voltage (Approx.)
ACC power supply
M125
3
ACC
Battery voltage
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M125
1
OFF
Existed
Power source
Fuse No.
Battery
32, 33
Ignition switch ACC
19
Signal name
Connector No.
Terminal No.
Ignition switch position
Voltage (Approx.)
Battery power supply
B224
10
OFF
Battery voltage
11
ACC power supply
B225
20
ACC
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