Nissan Maxima. Instruction — part 102
AV-228
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/O BOSE]
U1255 SATELLITE RADIO TUNER
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
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 M116
and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit. Refer to
AV-311, "Removal and Installation"
4.
CHECK SATELLITE RADIO TUNER
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector.
3. Connect satellite radio tuner.
4. Turn ignition switch ON.
5. Check voltage between satellite radio tuner harness connector
terminal ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace satellite radio tuner. Refer to
AV-324, "Removal and Installation"
M116
28
Ground
No
29
30
(+)
(
−)
Voltage
(Approx.)
Connector
Terminals
M116
28
Ground
7.0V
29
ALNIA1179ZZ
(+)
(
−)
Voltage
(Approx.)
Connector
Terminal
B111
30
Ground
7.0V
ALNIA1180ZZ
AV
U1300 AV COMM CIRCUIT
AV-229
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/O BOSE]
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U1300 AV COMM CIRCUIT
Description
INFOID:0000000010064870
U1300 is indicated when a communication signal malfunction occurs. U1300 is indicated along with DTCs that
identify components connected to the AV control unit through communication lines. Determine the possible
malfunction cause from the table below.
SELF-DIAGNOSIS RESULTS DISPLAY ITEM
DTC
Display contents of
CONSULT
DTC Detection Condition
Possible causes
U1300
U1240
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
When either one of the following items are detected:
• A/C and AV switch assembly power supply and ground
circuits are malfunctioning.
• AV communication circuits between AV control unit and
A/C and AV switch assembly are malfunctioning.
• AV communication signal between AV control unit and
A/C and AV switch assembly is malfunctioning.
• A/C and AV switch assembly power
supply and ground circuits.
• AV communication circuits be-
tween AV control unit and A/C and
AV switch assembly.
AV-230
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/O BOSE]
U1310 AV CONTROL UNIT
U1310 AV CONTROL UNIT
Description
INFOID:0000000010064871
Replace the AV control unit if this DTC is displayed. Refer to
AV-311, "Removal and Installation"
.
DTC Logic
INFOID:0000000010064872
Part name
Description
AV CONTROL UNIT
• It is the master unit of the MULTI AV system and it is connected to each control
unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.
• AV control unit includes audio function and vehicle information function.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It inputs the automatic brightness ON/OFF signals that are required for the dis-
play dimming control.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
DTC
Display contents of
CONSULT
DTC Detection Condition
Action to take
U1310
CONTROL UNIT (AV)
[U1310]
An initial diagnosis error is detected in AV communication
circuit.
Replace AV control unit. Refer to
311, "Removal and Installation"
.
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-231
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/O BOSE]
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POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000010064873
Regarding Wiring Diagram information, refer to
AV-282, "Wiring Diagram - Without BOSE Audio System With-
1.
CHECK FUSES
Check that the following fuses of the AV control unit are not blown.
Are the fuses OK?
YES
>> GO TO 2.
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
POWER SUPPLY CIRCUIT CHECK
1. Disconnect AV control unit connectors M115 and M119.
2. Check voltage between the AV control unit connectors M115
and M119 and ground.
Are the voltage results as specified?
YES
>> GO TO 3.
NO
>> • Check connector housings for disconnected or loose
terminals.
• Repair harness or connector.
3.
GROUND CIRCUIT CHECK
Unit
Terminals
Signal name
Fuse No.
AV control unit
19
Battery power
24
7
Ignition switch ACC or ON
17
104
Ignition switch ON or START
3
(+)
(-)
OFF
ACC
ON
Connector
Terminal
M115
7
Ground
0V
Battery
voltage
Battery
voltage
19
Ground
Battery
voltage
Battery
voltage
Battery
voltage
M119
104
Ground
0V
0V
Battery
voltage
AWNIA1581ZZ
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