Infiniti G37 Coupe. Manual — part 169
AV
U1244 GPS ANTENNA
AV-429
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1244 GPS ANTENNA
Description
INFOID:0000000001558838
DTC Logic
INFOID:0000000001558839
Diagnosis Procedure
INFOID:0000000001558840
1.
GPS ANTENNA CHECK
Visually check GPS antenna and antenna feeder.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK AV CONTROL UNIT VOLTAGE
1.
Disconnect GPS antenna connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit terminal 110 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace AV control unit.
Part name
Description
GPS ANTENNA
GPS signal is received and transmitted to AV control unit.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1244
GPS ANETNNA CONN
[U1244]
GPS antenna connection malfunction is detected.
GPS antenna disconnection.
110 - Ground
: Approx. 5 V
AV-430
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1250 CAMERA CONTROL UNIT
U1250 CAMERA CONTROL UNIT
Description
INFOID:0000000001558841
DTC Logic
INFOID:0000000001558842
Diagnosis Procedure
INFOID:0000000001558843
1.
CHECK CAMERA-CONNECTION RECOGNITION SIGNAL CIRCUIT
1.
Disconnect AV control unit connector and camera control unit connector.
2.
Check continuity between AV control unit harness connector terminal 40 and camera control unit harness
connector terminal 14.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
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 terminal 40 and ground.
Is the inspection result normal?
YES
>> Replace camera control unit.
NO
>> Replace AV control unit.
Part name
Description
CAMERA CONTROL UNIT
• Camera image signal is input from rear view camera, and camera image is in-
dicated on the display.
• Power (camera ON signal) is transmitted to rear view camera.
• Controlled by AV communication transmitted from AV control unit.
• AV control unit recognizes the presence of camera system with camera con-
nection recognition signal.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1250
CAMERA CONT. CONN
[U1250]
Malfunction is detected in Camera-connection recognition
signal circuit.
Camera-connection recognition sig-
nal circuit.
40 - 14
: Continuity should exist.
40 - Ground
: Approx. 5 V
AV
U1258 SATELLITE RADIO ANTENNA
AV-431
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1258 SATELLITE RADIO ANTENNA
Description
INFOID:0000000001558847
DTC Logic
INFOID:0000000001558848
Diagnosis Procedure
INFOID:0000000001558849
1.
SATELLITE RADIO ANTENNA CHECK
Visually check satellite radio antenna and antenna feeder.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK AV CONTROL UNIT VOLTAGE
1.
Disconnect satellite radio antenna connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit terminal 108 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace AV control unit.
Part name
Description
SATELLITE RADIO ANTENNA
Satellite radio signal is received and transmitted to AV control unit.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1258
XM ANTENNA CONN
[U1258]
Satellite radio antenna connection malfunction is detect-
ed.
Satellite radio antenna disconnection.
108 - Ground
: Approx. 5 V
AV-432
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1300 AV COMM CIRCUIT
U1300 AV COMM CIRCUIT
Description
INFOID:0000000001558850
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
U121F
• AV COMM CIRCUIT
[U1300]
• INTERNAL COMM
[U121F]
• Malfunction is detected in AV control unit power sup-
ply and ground circuits.
• AV control unit malfunction is detected.
• AV control unit power supply and
ground circuits.
• When there is no malfunction, AV
control unit is malfunctioning.
U1300
U1240
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• Multifunction switch power supply and ground circuits
malfunction is detected.
• Malfunction is detected in AV communication circuits
between AV control unit and multifunction switch.
• Malfunction is detected in AV communication signal
between AV control unit and multifunction switch.
• Multifunction switch power supply
and ground circuits.
• AV communication circuits between
AV control unit and multifunction
switch.
U1300
U1252
• AV COMM CIRCUIT
[U1300]
• REAR CAMERA
LAN CONN [U1252]
• Malfunction is detected in camera control unit power
supply and ground circuits.
• Malfunction is detected in AV communication signal
between AV control unit and camera control unit.
Camera control unit power supply and
ground circuits.
U1300
U1254
• AV COMM CIRCUIT
[U1300]
• IPOD CONN [U1254]
• iPod adapter power supply and ground circuits mal-
function is detected.
• Malfunction is detected in AV communication circuits
between camera control unit and iPod adapter.
• Malfunction is detected in AV communication signal
between AV control unit and iPod adapter
• iPod adapter power supply and
ground circuits.
• AV communication circuits between
camera control unit and iPod adapt-
er.
U1300
U1252
U1254
• AV COMM CIRCUIT
[U1300]
• REAR CAMERA
LAN CONN [U1252]
• IPOD CONN [U1254]
Malfunction is detected in AV communication circuits
between camera control unit and the junction of AV con-
trol unit and multifunction switch.
AV communication circuits between
camera control unit and the junction of
AV control unit and multifunction
switch.
U1300
U1240
U1252
U1254
• AV COMM CIRCUIT
[U1300]
• SWITCH CONN
[U1240]
• REAR CAMERA
LAN CONN [U1252]
• IPOD CONN [U1254]
Malfunction is detected in AV communication circuits
between AV control unit and the junction of camera con-
trol unit and multifunction switch.
AV communication circuits between
AV control unit and the junction of
camera control unit and multifunction
switch.
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