Nissan Murano Z51 (2008 year). Manual — part 51
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-589
< FUNCTION DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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• Change Application ID
- Any application ID'-s required to receive traffic information from the
satellite radio system can be set.
Delete Unit Connection Log
Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been
removed.)
Initialize Settings
Deletes data stored in HDD.
CONSULT-III Function (MULTI AV)
INFOID:0000000003356565
CONSULT-III FUNCTIONS
CONSULT-III performs the following functions via the communication with the AV control unit.
AV COMMUNICATION
When “AV communication” of “CAN Diag Support Monitor” is selected, the following function will be performed.
ECU IDENTIFICATION
The part number of AV control unit is displayed.
JSNIA0093GB
JSNIA0088GB
JSNIA0095GB
Diagnosis mode
Description
Ecu Identification
The part number of AV control unit can be checked.
Self Diagnostic Result
Performs a diagnosis on the AV control unit and a connection diagnosis for the communication
circuit of the MULTI AV system, and displays the current and past malfunctions collectively.
Data Monitor
The diagnosis of vehicle signal that is input to the AV control unit can be performed.
AV communication
AV&NAVI C/U
Displays the communication status from AV control unit to each unit as well as the error
counter.
AUDIO
Displays the AV control unit communication status and the error counter.
Revision: 2008 October
2009 Murano
AV-590
< FUNCTION DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
SELF DIAGNOSIS RESULT
• In CONSULT-III self-diagnosis, self-diagnosis results and error history are displayed collectively.
• A current malfunction indicates “crnt”. a past malfunction indicates “past”.
• The timing is displayed as “0” if any of the error codes [U1000], [U1010], [U1300] and [U1310] is detected.
the counter increases by 1 if the status is normal at the next ignition switch on cycle.
Self-diagnosis Results Display Item
Error item
Description
Possible malfunction factor/Action to take
CAN COMM CIRCUIT [U1000]
CAN communication malfunction is detect-
ed.
Refer to
.
CONTROL UNIT (CAN) [U1010]
CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit.
CONTROL UNIT (AV) [U1310]
AV communication circuit initial diagnosis
malfunction is detected.
Control Unit FLASH-ROM [U1200]
AV control unit malfunction is detected.
Gyro NO CONN [U1201]
CAN CONT [U1216]
BLUETOOTH CONN [U1217]
HDD CONN [U1218]
HDD READ [U1219]
XM SERIAL COMM [U1220]
HDD WRITE [U121A]
HDD COMM [U121B]
HDD ACCESS [U121C]
DSP CONN [U121D]
DSP COMM [U121E]
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 mal-
function in those components, replace AV
control unit.
GPS COMM [U1204]
GPS malfunction is detected.
An intermittent error caused by strong radio
interference may be detected unless a
symptom (GPS reception error, etc.) oc-
curs.
Replace the AV control unit if the malfunc-
tion occurs constantly.
GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]
FRONT DISP CONN [U1243]
When either one of the following items are
detected:
• front display unit power supply and
ground circuits are malfunctioning.
• 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 mal-
functioning.
• Front display unit power supply and
ground circuits.
• Serial communication circuits between
AV control unit and display unit.
GPS ANTENNA CONN [U1244]
GPS antenna connection malfunction is de-
tected.
GPS antenna.
CAMERA CONT CONN [U1250]
Malfunction is detected in camera connec-
tion recognition circuit between AV control
unit and camera control unit.
Camera-connection recognition circuit be-
tween AV control unit and camera control
unit.
XM ANTENNA CONN [U1258]
Satellite radio antenna connection malfunc-
tion is detected.
• Satellite radio antenna feeder.
• Antenna base.
Revision: 2008 October
2009 Murano
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-591
< FUNCTION DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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NOTE:
*: Non-equipped item is not displayed.
DATA MONITOR
All Signals
• Displays the status of the following vehicle signals inputted into the AV control unit.
• For each signal, the actual signal can be compared with the status recognized on the system.
• 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 mal-
function in those components, replace AV
control unit.
• 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.
• 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 mul-
tifunction switch and camera control unit
is 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 mul-
tifunction switch and camera control unit.
• 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 mul-
tifunction switch and iPod adapter are
malfunctioning.
• AV communication signal between AV
control unit and iPod adapter is malfunc-
tioning.
• iPod adapter power supply and ground
circuits.
• AV communication circuits between mul-
tifunction switch unit and iPod adapter.
• AV COMM CIRCUIT [U1300]
• REAR CAMERA LAN CONN [U1252]
• IPod CONN [U1254]
*
Malfunction is detected in AV communica-
tion circuits between camera control unit
and the junction of AV control unit and mul-
tifunction switch.
AV communication circuits between cam-
era control unit and the junction of AV con-
trol unit and multifunction switch.
• AV COMM CIRCUIT [U1300]
• SWITCH CONN [U1240]
• REAR CAMERA LAN CONN [U1252]
• IPod CONN [U1254]
*
Malfunction is detected in AV communica-
tion circuits between AV control unit and
multifunction switch.
AV communication circuits between AV
control unit and the junction of camera con-
trol unit and multifunction switch.
• AV COMM CIRCUIT [U1300]
• INTERNAL COMM [U121F]
• SWITCH CONN [U1240]
• REAR CAMERA LAN CONN [U1252]
• IPod CONN [U1254]*
Malfunction is detected in AV communica-
tion circuits.
Check and repair the short circuit in AV
communication circuits.
Error item
Description
Possible malfunction factor/Action to take
Revision: 2008 October
2009 Murano
AV-592
< FUNCTION DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Selection From Menu
allows the technician to select which vehicle signals should be displayed and displays the status of the
selected vehicle signals.
Display Item
Display
Vehicle status
Remarks
VHCL SPD SIG
On
Vehicle speed >0 km/h (0 MPH)
Changes in indication may be delayed. This is
normal.
Off
Vehicle speed =0 km/h (0 MPH)
PKB SIG
On
Parking brake is applied.
Off
Parking brake is released.
ILLUM SIG
On
Block the light beam from the auto
light optical sensor when the light
SW is ON.
—
Off
Expose the auto light optical sensor
to light when the light SW is OFF or
ON.
IGN SIG
On
Ignition switch ON
Off
Ignition switch in the ACC position
REV SIG
On
Selector lever in the “R” position
Changes in indication may be delayed. This is
normal.
Off
Selector lever in any position other
than the “R” position
Item to be selected
Description
VHCL SPD SIG
The same as when “ALL SIGNALS”
is selected.
PKB SIG
ILLUM SIG
IGN SIG
REV SIG
Revision: 2008 October
2009 Murano
AV
U1000 CAN COMM CIRCUIT
AV-593
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000003356566
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independently). In CAN communication, control units are connected with 2
communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each
control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-25, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000003356567
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003356568
1.
PERFORM SELF-DIAGNOSTIC
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Check “Self Diagnostic Result” of “MULTI AV”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to “LAN system”. Refer to
LAN-16, "Trouble Diagnosis Flow Chart"
NO
>> Refer to GI section. Refer to
GI-40, "Intermittent Incident"
.
DTC
Display contents of CON-
SULT-III
Diagnostic item is detected when...
Probable malfunction location
U1000
CAN COMM CIRCUIT
AV control unit is not transmitting or receiving
CAN communication signal for 2 seconds or
more.
CAN communication system.
Revision: 2008 October
2009 Murano
AV-594
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000003356569
Initial diagnosis of AV control unit.
DTC Logic
INFOID:0000000003356570
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003356571
1.
REPLACE AV CONTROL UNIT
When DTC U1010 is detected, replace AV control unit.
>> INSPECTION END
DTC
Display contents of CON-
SULT-III
Diagnostic item is detected when...
Probable malfunction location
U1010
CONTROL UNIT (CAN)
CAN initial diagnosis malfunction is detected.
AV control unit.
Revision: 2008 October
2009 Murano
AV
U1310 AV CONTROL UNIT
AV-595
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1310 AV CONTROL UNIT
Description
INFOID:0000000003356572
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356573
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
U1310
CONTROL UNIT (AV)
[U1310]
An initial diagnosis error is detected in AV communication
circuit.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-596
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1200 AV CONTROL UNIT
U1200 AV CONTROL UNIT
Description
INFOID:0000000003356574
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356575
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
U1200
Cont Unit
FLASH-ROM
[U1200]
An internal malfunction is detected in AV control unit
(FLASH-ROM).
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV
U1201 AV CONTROL UNIT
AV-597
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1201 AV CONTROL UNIT
Description
INFOID:0000000003356576
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356577
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
U1201
GYRO NO CONN
[U1201]
Internal malfunction of AV control unit (gyrocompass dis-
connection) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-598
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1216 AV CONTROL UNIT
U1216 AV CONTROL UNIT
Description
INFOID:0000000003356578
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356579
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
U1216
CAN CONT
[U1216]
Internal malfunction of AV control unit (CAN controller) is
detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV
U1217 AV CONTROL UNIT
AV-599
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1217 AV CONTROL UNIT
Description
INFOID:0000000003356580
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356581
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
U1217
BLUETOOTH MODULE
CONN
[U1217]
Internal malfunction of AV control unit (Bluetooth module
connection malfunction) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-600
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1218 AV CONTROL UNIT
U1218 AV CONTROL UNIT
Description
INFOID:0000000003356582
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356583
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
U1218
HDD-CONN
[U1218]
Internal malfunction of AV control unit (HDD connection
malfunction) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV
U1219 AV CONTROL UNIT
AV-601
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1219 AV CONTROL UNIT
Description
INFOID:0000000003356584
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356585
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
U1219
HDD-READ
[U1219]
Internal malfunction of AV control unit (HDD read malfunc-
tion) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-602
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1220 AV CONTROL UNIT
U1220 AV CONTROL UNIT
Description
INFOID:0000000003356586
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356587
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
U1220
XM SERIAL COMM
[U1220]
Internal malfunction of AV control unit (satellite radio tuner
communication error) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV
U121A AV CONTROL UNIT
AV-603
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U121A AV CONTROL UNIT
Description
INFOID:0000000003356588
Replace the AV control unit if this DTC is displayed. Refer to
DTC Logic
INFOID:0000000003356589
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
U121A
HDD-WRITE
[U121A]
Internal malfunction of AV control unit (HDD write mal-
function) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
AV-604
< COMPONENT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U121B AV CONTROL UNIT
U121B AV CONTROL UNIT
Description
INFOID:0000000003356590
Replace the AV control unit if this DTC is displayed. Refer to
.
DTC Logic
INFOID:0000000003356591
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
U121B
HDD-COMM
[U121B]
Internal malfunction of AV control unit (HDD communica-
tion error) is detected.
Replace AV control unit.
Revision: 2008 October
2009 Murano
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