Infiniti QX56 (JA60). Manual — part 64
AV-64
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
U1250 CAMERA CONTROL UNIT
1. Connect AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector M45
terminal 84 and ground.
Is voltage approximately 5 volts?
YES
>> Replace camera control unit. Refer to
.
NO
>> Replace AV control unit. Refer to
AV-169, "Removal and Installation"
.
Connector
Terminals
Voltage
(+)
(-)
M45
84
Ground
Approx. 5V
ALNIA0402GB
AV
U1258 SATELLITE RADIO ANTENNA
AV-65
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1258 SATELLITE RADIO ANTENNA
Description
INFOID:0000000005146295
DTC Logic
INFOID:0000000005146296
Diagnosis Procedure
INFOID:0000000005146297
Regarding Wiring Diagram information, refer to
.
1.
SATELLITE RADIO ANTENNA CHECK
Visually check satellite radio antenna and antenna feeder.
Is inspection result OK?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK AV CONTROL UNIT VOLTAGE
1. Disconnect AV control unit connector M125.
2. Turn ignition switch ON.
3. Check voltage between AV control unit connector M125 termi-
nal 118 and ground.
Is voltage approximately 5 volts?
YES
>> Inspection end.
NO
>> Replace AV control unit. Refer to
Part name
Description
SATELLITE RADIO ANTENNA
Satellite radio signal is received and sent to audio control unit.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1258
XM ANETNNA CONN
[U1258]
Satellite radio antenna connection malfunction is detect-
ed.
Satellite radio antenna disconnection.
118 - Ground
: Approx. 5 V
ALNIA0403GB
AV-66
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
U1300 AV COMM CIRCUIT
U1300 AV COMM CIRCUIT
Description
INFOID:0000000005146298
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
• AV COMM CIRCUIT
[U1300]
When AV control unit is not transmitting or receiving AV
communication signal for 2 seconds or more.
AV communication system.
AV
U1310 AV CONTROL UNIT
AV-67
< COMPONENT DIAGNOSIS >
[AUDIO SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1310 AV CONTROL UNIT
Description
INFOID:0000000005146299
Replace the AV control unit if this DTC is displayed. Refer to
AV-169, "Removal and Installation"
.
DTC Logic
INFOID:0000000005146300
Part name
Description
AV CONTROL UNIT
• Integrates HDD (hard disk drive) allowing map data and music data to be
stored.
• 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.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, and vehicle information functions.
• 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-III
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
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