Nissan Murano. Instruction — part 116
AV-242
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
U1300 AV COMM CIRCUIT
U1300 AV COMM CIRCUIT
Description
INFOID:0000000009721749
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
DTC detection condition
Possible malfunction factor
U1300
U1240
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
When either one of the following items are detected:
• multifunction switch power supply and ground circuits
are malfunctioning.
• AV communication circuits between AV control unit
and multifunction switch are malfunctioning.
• Multifunction switch power supply
and ground circuits.
• AV communication circuits between
AV control unit and multifunction
switch.
U1300
U1256
• AV COMM CIRCUIT
[U1300]
• HAND FREE CONN
[U1256]
When either one of the following items are detected:
• TEL adapter unit power supply and ground circuits are
malfunctioning.
• AV communication circuits between AV control unit
and TEL adapter unit are malfunctioning.
• TEL adapter unit power supply and
ground circuits.
• AV communication circuits between
AV control unit and TEL adapter unit.
U1300
U1240
U1256
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• HAND FREE CONN
[U1256]
AV communication circuits between AV control unit and
multifunction switch are malfunctioning.
AV communication circuits between AV
control unit and multifunction switch.
AV
U1310 AV CONTROL UNIT
AV-243
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1310 AV CONTROL UNIT
DTC Logic
INFOID:0000000009721750
DTC
Display contents of
CONSULT
DTC detection condition
Possible malfunction factor
U1310
CONTROL UNIT (AV)
[U1310]
An initial diagnosis error is detected in AV communication
circuit.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to
AV-244
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009721751
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 AV control unit harness connectors and ground.
Is the 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 the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000009721752
1.
CHECK POWER SUPPLY CIRCUIT (DISPLAY SIDE)
Check voltage between display unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
1.
Turn ignition switch OFF.
2.
Disconnect AV control unit connector and display unit connector.
3.
Check continuity between AV control unit harness connector and display unit harness connector.
Power source
Fuse No.
Battery
35
Ignition switch ACC or ON
19
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Battery power supply
M171
19
OFF
Battery voltage
ACC power supply
7
ACC
Battery voltage
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M171
20
OFF
Existed
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Inverter VCC
M194
2
ACC
9.0 V
Signal VCC
3
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-245
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
4.
Check continuity between display unit harness connector and ground.
Is the 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 the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace AV control unit. Refer to
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 the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
BOSE AMP.
BOSE AMP. : Diagnosis Procedure
INFOID:0000000009721753
1.
CHECK FUSE
Check for blown fuses.
Is the inspection result normal?
AV control unit
Display unit
Continuity
Connector
Terminal
Connector
Terminal
M172
48
M194
2
Existed
36
3
Existed
Display unit
Ground
Continuity
Connector
Terminal
M194
2
Not existed
3
Not existed
(+)
(
−
)
Ignition switch
position
Voltage (Ap-
prox.)
AV control unit
Connector
Terminal
M172
48
Ground
ACC
9.0 V
36
9.0 V
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M194
1
OFF
Existed
Power source
Fuse No.
Battery
23
24
25
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