Infiniti FX35, FX50 (S51). Manual — part 81
AV
U1255 SATELLITE RADIO TUNER
AV-97
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT NAVIGATION]
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Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit.
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 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace satellite radio tuner.
M206
129
Ground
7.5 V
130
7.0 V
(+)
(
−
)
Voltage
(Approx.)
Satellite radio tuner
Connector
Terminal
B236
10
Ground
7.0 V
AV-98
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT NAVIGATION]
U1263 USB
U1263 USB
DTC Logic
INFOID:0000000005528951
Diagnosis Procedure
INFOID:0000000005528952
1.
CHECK USB HARNESS
Visually check USB harness.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
NO
>> Replace USB harness.
DTC
Display contents of
CONSULT-III
DTC detection condition
Possible malfunction factor
U1263
USB OVERCURRENT
[U1263]
Detection of overcurrent in USB connector.
Check USB harness between the AV
control unit and USB connector.
AV
U1300 AV COMM CIRCUIT
AV-99
< DTC/CIRCUIT DIAGNOSIS >
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U1300 AV COMM CIRCUIT
Description
INFOID:0000000005246803
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
DTC Detection Condition
Possible causes
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.
• Multifunction switch power supply
and ground circuits.
• AV communication circuits be-
tween AV control unit and multi-
function switch.
U1300
U1256
• AV COMM CIRCUIT
[U1300]
• HAND FREE CONN
[U1256]
When either one of the following items is 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 be-
tween AV control unit and TEL
adapter unit.
U1300
U1240
U1256
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• HAND FREE CONN
[U1256]
Malfunction is detected in AV communication circuits be-
tween AV control unit and multifunction switch.
AV communication circuits between
AV control unit and multifunction
switch.
AV-100
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT NAVIGATION]
U1310 AV CONTROL UNIT
U1310 AV CONTROL UNIT
DTC Logic
INFOID:0000000005528961
DTC
Display contents of
CONSULT-III
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.
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