Nissan Murano Z51 (2008 year). Manual — part 52
AV
U121C AV CONTROL UNIT
AV-605
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U121C AV CONTROL UNIT
Description
INFOID:0000000003356592
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356593
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, and vehicle information functions.
• It is connected to ECM, A/C auto amp. and combination meter via CAN com-
munication to obtain necessary information for the vehicle information function.
• It is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U121C
HDD-ACCESS
[U121C]
Internal malfunction of AV control unit (HDD access error)
is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-606
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U121D AV CONTROL UNIT
U121D AV CONTROL UNIT
Description
INFOID:0000000003356594
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356595
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, and vehicle information functions.
• It is connected to ECM, A/C auto amp. and combination meter via CAN com-
munication to obtain necessary information for the vehicle information function.
• It is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U121D
DSP CONN
[U121D]
Internal malfunction of AV control unit (DSP connection
error) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV
U121E AV CONTROL UNIT
AV-607
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U121E AV CONTROL UNIT
Description
INFOID:0000000003356596
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356597
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, and vehicle information functions.
• It is connected to ECM, A/C auto amp. and combination meter via CAN com-
munication to obtain necessary information for the vehicle information function.
• It is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U121E
DSP COMM
[U121E]
Internal malfunction of AV control unit (DSP communica-
tion error) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-608
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U121F AV CONTROL UNIT
U121F AV CONTROL UNIT
Description
INFOID:0000000003356598
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356599
Diagnosis Procedure
INFOID:0000000003356600
1.
CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check AV control unit power supply and ground circuit. Refer to
AV-619, "AV CONTROL UNIT : Diagnosis
.
Is the inspection result normal?
YES
>> Replace AV control unit.
NO
>> Repair or replace malfunctioning parts.
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, and vehicle information functions.
• It is connected to ECM, A/C auto amp. and combination meter via CAN com-
munication to obtain necessary information for the vehicle information function.
• It is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U121F
INTERNAL COMM
[U121F]
Internal malfunction of AV control unit (internal communi-
cation error) is detected.
AV control unit power supply and
ground circuit.
Revision: 2008 October
2009 Murano
AV
U1204 GPS
AV-609
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1204 GPS
Description
INFOID:0000000003356601
An intermittent error caused by strong radio interference may be detected unless any symptom (GPS recep-
tion error, etc.) occurs. Replace the AV control unit if the malfunction occurs constantly. Refer to
DTC Logic
INFOID:0000000003356602
Diagnosis Procedure
INFOID:0000000003356603
1.
PERFORM THE SELF-DIAGNOSIS
1.
Delete the self-diagnosis results. Turn ignition switch OFF.
2.
Turn ignition switch ON. Perform the self-diagnosis again.
3.
Check that the DTC is detected again.
Is any DTC detected?
YES
>> Replace AV control unit.
NO
>> The intermittent malfunction caused by strong radio interference can be detected.
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, 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 is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U1204
GPS CONN
[U1204]
Internal malfunction of AV control unit (GPS malfunction)
is detected.
An intermittent error caused by strong
radio interference may be detected
unless a symptom (GPS reception er-
ror, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Revision: 2008 October
2009 Murano
AV-610
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1205 GPS
U1205 GPS
Description
INFOID:0000000003556528
An intermittent error caused by strong radio interference may be detected unless any symptom (GPS recep-
tion error, etc.) occurs. Replace the AV control unit if the malfunction occurs constantly. Refer to
DTC Logic
INFOID:0000000003356605
Diagnosis Procedure
INFOID:0000000003356606
1.
PERFORM THE SELF-DIAGNOSIS
1.
Delete the self-diagnosis results. Turn ignition switch OFF.
2.
Turn ignition switch ON. Perform the self-diagnosis again.
3.
Check that the DTC is detected again.
Is any DTC detected?
YES
>> Replace AV control unit.
NO
>> The intermittent malfunction caused by strong radio interference can be detected.
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, 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 is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U1205
GPS ROM
[U1205]
Internal malfunction of AV control unit (GPS malfunction)
is detected.
An intermittent error caused by strong
radio interference may be detected
unless a symptom (GPS reception er-
ror, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Revision: 2008 October
2009 Murano
AV
U1206 GPS
AV-611
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1206 GPS
Description
INFOID:0000000003556529
An intermittent error caused by strong radio interference may be detected unless any symptom (GPS recep-
tion error, etc.) occurs. Replace the AV control unit if the malfunction occurs constantly. Refer to
DTC Logic
INFOID:0000000003356608
Diagnosis Procedure
INFOID:0000000003356609
1.
PERFORM THE SELF-DIAGNOSIS
1.
Delete the self-diagnosis results. Turn ignition switch OFF.
2.
Turn ignition switch ON. Perform the self-diagnosis again.
3.
Check that the DTC is detected again.
Is any DTC detected?
YES
>> Replace AV control unit.
NO
>> The intermittent malfunction caused by strong radio interference can be detected.
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, 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 is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U1206
GPS RAM
[U1206]
Internal malfunction of AV control unit (GPS malfunction)
is detected.
An intermittent error caused by strong
radio interference may be detected
unless a symptom (GPS reception er-
ror, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Revision: 2008 October
2009 Murano
AV-612
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1207 GPS
U1207 GPS
Description
INFOID:0000000003556530
An intermittent error caused by strong radio interference may be detected unless any symptom (GPS recep-
tion error, etc.) occurs. Replace the AV control unit if the malfunction occurs constantly. Refer to
DTC Logic
INFOID:0000000003356611
Diagnosis Procedure
INFOID:0000000003356612
1.
PERFORM THE SELF-DIAGNOSIS
1.
Delete the self-diagnosis results. Turn ignition switch OFF.
2.
Turn ignition switch ON. Perform the self-diagnosis again.
3.
Check that the DTC is detected again.
Is any DTC detected?
YES
>> Replace AV control unit.
NO
>> The intermittent malfunction caused by strong radio interference can be detected.
Part name
Description
AV CONTROL UNIT
• Integrates hard disk drive (HDD) 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 communication. It operates each system according to communication
signals from the AV control unit.
• The AV control unit includes the audio, hands-free phone, voice control, navi-
gation, satellite radio, 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 is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• It inputs the illumination signals that are required for the display dimming con-
trol.
• It inputs the signals for driving status recognition (vehicle speed, reverse and
parking brake).
• Update of map data is performed with the CONSULT-III and the applicable ca-
ble.
• It includes the TEL adapter and Bluetooth
™
function.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U1207
GPS RTC
[U1207]
Internal malfunction of AV control unit (GPS malfunction)
is detected.
An intermittent error caused by strong
radio interference may be detected
unless a symptom (GPS reception er-
ror, etc.) occurs.
Replace the AV control unit if the mal-
function occurs constantly.
Revision: 2008 October
2009 Murano
AV
U1243 DISPLAY UNIT
AV-613
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1243 DISPLAY UNIT
Description
INFOID:0000000003356613
DTC Logic
INFOID:0000000003356614
Diagnosis Procedure
INFOID:0000000003356615
1.
CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check front display unit power supply and ground circuit. Refer to
AV-619, "FRONT DISPLAY UNIT : Diagno-
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK CONTINUITY COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front display unit connector and AV control unit connector.
3.
Check continuity between front display unit harness connector and AV control unit harness connector.
4.
Check continuity between front display unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK COMMUNICATION SIGNAL
1.
Connect front display unit connector and AV control unit connector.
Part name
Description
FRONT DISPLAY UNIT
• Front display image is controlled by the serial communication from AV control
unit.
• RGB image signal is input from AV control unit (RGB, RGB area and RGB syn-
chronizing). Auxiliary image signal is input from the auxiliary input jack. Cam-
era image signal is input from camera control unit.
• Synchronize signal (HP, VP) is output to AV control unit.
• Touch panel function can be operated for each system by touching a display
directly.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Possible causes
U1243
FRONT DISP CONN
[U1243]
When either one of the following items are detected:
• serial communication circuits between AV control unit
and front display unit are malfunctioning.
• serial communication signal between AV control unit
and front display unit is malfunctioning.
• Front display unit power supply and
ground circuits.
• Serial communication circuits be-
tween AV control unit and display
unit.
Front display unit
AV control unit
Continuity
Connector
Terminals
Connector
Terminals
M49
11
M146
70
Existed
22
71
Front display unit
Ground
Continuity
Connector
Terminals
M49
11
Not existed
22
Revision: 2008 October
2009 Murano
AV-614
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1243 DISPLAY UNIT
2.
Turn ignition switch ON.
3.
Check signal between front display unit harness connector terminal and ground using an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit.
4.
CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace front display unit.
(+)
(
−
)
Condition
Signal
Front display unit
Connector
Terminal
M49
11
Ground
When adjusting display bright
ness.
PKIB5039J
(+)
(
−
)
Condition
Signal
Front display unit
Connector
Terminal
M49
22
Ground
When adjusting display bright
ness.
PKIB5039J
Revision: 2008 October
2009 Murano
AV
U1244 GPS ANTENNA
AV-615
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1244 GPS ANTENNA
Description
INFOID:0000000003356616
DTC Logic
INFOID:0000000003356617
Diagnosis Procedure
INFOID:0000000003356618
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 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 ANTENNA CONN
[U1244]
GPS antenna connection malfunction is detected.
GPS antenna disconnection.
(+)
(
−
)
Voltage
(Approx.)
AV control unit
Connector
Terminal
M380
110
Ground
5.0 V
Revision: 2008 October
2009 Murano
AV-616
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1250 CAMERA CONTROL UNIT
U1250 CAMERA CONTROL UNIT
Description
INFOID:0000000003356619
DTC Logic
INFOID:0000000003356620
Diagnosis Procedure
INFOID:0000000003356621
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 and camera control unit harness connector.
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 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
circuit between AV control unit and camera control unit.
Camera-connection recognition cir-
cuit between AV control unit and cam-
era control unit.
AV control unit
Camera control unit
Continuity
Connector
Terminal
Connector
Terminal
M145
40
B60
14
Existed
(+)
(
−
)
Voltage
(Approx.)
AV control unit
Connector
Terminal
M145
40
Ground
5.0 V
Revision: 2008 October
2009 Murano
AV
U1258 SATELLITE RADIO ANTENNA
AV-617
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1258 SATELLITE RADIO ANTENNA
Description
INFOID:0000000003356622
DTC Logic
INFOID:0000000003356623
Diagnosis Procedure
INFOID:0000000003356624
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 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace AV control unit.
Part name
Description
SATELLITE RADIO ANTENNA
Satellite radio waves are 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 feeder.
• Satellite radio antenna.
(+)
(
−
)
Voltage
(Approx.)
AV control unit
Connector
Terminal
M372
108
Ground
5.0 V
Revision: 2008 October
2009 Murano
AV-618
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1300 AV COMM CIRCUIT
U1300 AV COMM CIRCUIT
Description
INFOID:0000000003356625
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
NOTE:
*: Non-equipped item is not displayed.
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 supply
and ground circuits.
Check AV control unit power supply
and ground circuits. When detecting no
malfunction in those components, re-
place AV control unit.
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.
• AV communication signal between AV control unit and
multifunction switch is malfunctioning.
• 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]
When either one of the following items are detected:
• camera control unit power supply and ground circuits
are malfunctioning.
• AV communication circuits between multifunction and
camera control unit are malfunctioning.
• AV communication signal between AV control unit and
camera control unit is malfunctioning.
• Camera control unit power supply
and ground circuits.
• AV communication circuits between
multifunction switch and camera
control unit.
U1300
U1254
• AV COMM CIRCUIT
[U1300]
• IPod CONN [U1254]
When either one of the following items are detected:
• iPod adapter power supply and ground circuits are
malfunctioning.
• AV communication circuits between multifunction
switch and iPod adapter are malfunctioning.
• AV communication signal between AV control unit and
iPod adapter is malfunctioning.
• iPod adapter power supply and
ground circuits.
• AV communication circuits between
multifunction switch unit and iPod
adapter.
U1300
U1252
U1254
*
• AV COMM CIRCUIT
[U1300]
• REAR CAMERA LAN
CONN [U1252]
• IPod CONN [U1254]
*
Malfunction is detected in AV communication circuits be-
tween camera control unit and the junction of AV control
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 be-
tween AV control unit and multifunction switch.
AV communication circuits between AV
control unit and the junction of camera
control unit and multifunction switch.
U1300
U121F
U1240
U1252
U1254
*
• AV COMM CIRCUIT
[U1300]
• INTERNAL COMM
[U121F]
• SWITCH CONN
[U1240]
• REAR CAMERA LAN
CONN [U1252]
• IPod CONN [U1254]*
Malfunction is detected in AV communication circuits.
Check and repair the short circuit in AV
communication circuits.
Revision: 2008 October
2009 Murano
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-619
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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P
POWER SUPPLY AND GROUND CIRCUIT
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000003356626
1.
CHECK FUSE
Check for blown fuses.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate the 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.
FRONT DISPLAY UNIT
FRONT DISPLAY UNIT : Diagnosis Procedure
INFOID:0000000003356627
1.
CHECK FUSE
Check for blown fuses.
Power source
Fuse No.
Battery
35
Ignition switch ACC or ON
19
Ignition switch ON or START
3
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Battery power supply
M144
19
OFF
Battery voltage
M145
22
24
ACC power supply
M144
7
ACC
Battery voltage
M145
25
Ignition signal
M145
35
ON
Battery voltage
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M145
21
OFF
Existed
23
Power source
Fuse No.
Battery
35
Ignition switch ACC or ON
19
Revision: 2008 October
2009 Murano
AV-620
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate the cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between display unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between Display unit and fuse.
3.
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.
MULTIFUNCTION SWITCH
MULTIFUNCTION SWITCH : Diagnosis Procedure
INFOID:0000000003356628
1.
CHECK FUSE
Check for blown fuses.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate the cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between multifunction switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between multifunction switch and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect multifunction switch connector.
3.
Check continuity between multifunction switch harness connector and ground.
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
Battery power supply
M49
2
OFF
Battery voltage
ACC power supply
3
ACC
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M49
1
OFF
Existed
13
Power source
Fuse No.
Ignition switch ACC or ON
19
Signal name
Connector No.
Terminal No.
Ignition switch position
Value (Approx.)
ACC power supply
M125
3
ACC
Battery voltage
Signal name
Connector No.
Terminal No.
Ignition switch position
Continuity
Ground
M125
1
OFF
Existed
Revision: 2008 October
2009 Murano
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