2010 INFINITI QX56 Air

AV-24
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
HANDS-FREE PHONE SYSTEM
HANDS-FREE PHONE SYSTEM
System DiagramINFOID:0000000005146238
System DescriptionINFOID:0000000005146239
Refer to the Owner's Manual for Bluetoot
h telephone system operating instructions.
NOTE:
Cellular telephones must have their wireless connection set up (paired) before using the Bluetooth telephone
system.
Bluetooth telephone system allows users who have a Bluetooth equipped cellular telephone to make a wire-
less connection between their cellular telephone and the AV control unit. Hands-free cellular telephone calls
can be sent and received. Personal memos can be created using the Nissan Voice Recognition system. Some
Bluetooth cellular telephones may not be recognized by t he AV control unit. When a cellular telephone or the
AV control unit is replaced, the telephone must be pair ed with the AV control unit. Different cellular telephones
may have different pairing procedures. Refer to the cellular telephone operating manual and the vehicle
Owner’s Manual for more information.
AV CONTROL UNIT
When the ignition switch is turned to ACC or ON, the AV control unit will power up. During power up, the Blue-
tooth feature is initialized and performs various self checks. Initialization may take up to 10 seconds. If a
phone is present in the vehicle and paired with the AV control unit, Nissan Voice Recognition will then become
active. Bluetooth telephone functions can be turned off using the Nissan Voice Recognition system.
STEERING WHEEL AUDIO CONTROL SWITCHES
When buttons on the steering wheel audio control switch are pushed, the resistance in steering wheel audio
control switch circuit changes depending on which button is pushed. The AV control unit uses this signal to
perform various functions while navigati ng through the voice recognition system.
The following functions can be performed using the steering wheel audio control switch:
• Initiate Self Diagnosis of the Bluetooth telephone system
• Start a voice recognition session
• Answer and end telephone calls
• Adjust the volume of calls
• Record memos
MICROPHONE
The microphone is located in the roof console assembly . The microphone sends a signal to the AV control unit.
The microphone can be actively tested during self-diagnosis.
AWNIA0131GB
Revision: April 20092010 QX56

AV-34
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
XM SAT SUBSCRIPTION STATUS
The XM NavTraffic subscription status can be checked.
Error History
The self-diagnosis results are judged depending on whether any
error occurs from when “Self-diagnosis” is selected until the self-
diagnosis results are displayed.
However, the diagnosis results are judged normal if an error has
occurred before the ignition SW is turned ON and then no error has
occurred until the self-diagnosis start. Check the “Error History” to
detect any error that may have occurred before the self-diagnosis
start because of this situation.
Count up method A
• The counter resets to 0 if an error occurs when IGN switch is
turned ON. The counter increases by 1 if thecondition is normal at
a next IGN ON cycle.
• The counter upper limit is 39. Any counts exceeding 39 are ignored. The counter can be reset (no error- record display) with the “Delete log” switch or CONSULT-III.
Count up method B
• The counter increases by 1 if an error occurs when IGN switch is ON. The counter will not decrease even
ifthe condition is normal at the next IGN ON cycle.
• The counter upper limit is 50. Any counts exceeding 50 are ignored. The counter can be reset (no error- record display) with the “Delete log” switch or CONSULT-III.
Error item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items
ALNIA0225GB
Display method of occur- rence frequency Error history diplay item
Count up method A CAN communication line, control unit (CAN), AV communication line, control unit (AV communica-
tion)
Count up method B Other than above
Error item DescriptionPossible malfunction factor/Action to take
CAN COMM CIRCUIT CAN communication malfunction is detect-
ed.Perform diagnosis with CONSULT-III, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to
AV- 3 8 , "
AV CONTROL UNIT :
CONSULT-III Function".
ALNIA0226GB
Revision: April 20092010 QX56

AV-38
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been
removed)
Inititialize Settings
Initializes the AV control unit memory.
AV CONTROL UNIT : CONSULT-III FunctionINFOID:0000000005146243
CONSULT-III can display each diagnostic item us
ing the diagnostic test modes shown following.
Self-diagnosis results
• In CONSULT-III self-diagnosis, self-diagnosis results and error history are displayed collectively.
• The current malfunction indicates “CRNT”. The 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 condition is normal at the next ignition switch ON cycle.
Self-diagnosis results display item
ALNIA0239GB
ALNIA0240GB
MULTI AV diagnosis mode Description
SELF-DIAG RESULTS Displays AV control unit self-diagnosis results.
DATA MONITOR Displays AV control unit input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
AV COMM MONITOR Allows the technician to monitor the status of the Multi AV system communication signals.
ECU PART NUMBER The part number of AV control unit can be checked.
Error item DescriptionPossible malfunction factor/Action to take
CAN COMM CIRCUIT[U1000] CAN communication malfunction is detect-
ed.Perform diagnosis with CONSULT-III, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to
AV- 3 8 , "
AV CONTROL UNIT :
CONSULT-III Function".
Revision: April 20092010 QX56

AV-58
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U121F AV CONTROL UNIT
U121F AV CONTROL UNIT
DescriptionINFOID:0000000005146281
DTC LogicINFOID:0000000005146282
Diagnosis ProcedureINFOID:0000000005146283
1.CHECK AV CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Check AV control unit power supply and ground circuit. Refer to AV-68, "
AV CONTROL UNIT : Diagnosis Pro-
cedure".
Is inspection result OK?
YES >> Inspection End.
NO >> Repair malfunctioning parts.
Part name Description
AV CONTROL UNIT • Integrates HDD (hard disk dr
ive) 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
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: April 20092010 QX56

AV-60
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1243 DISPLAY UNIT
U1243 DISPLAY UNIT
DescriptionINFOID:0000000005146286
DTC LogicINFOID:0000000005146287
Diagnosis ProcedureINFOID:0000000005146288
Regarding Wiring Diagram information, refer to
AV-116, "Wiring Diagram".
1.CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check display unit power supply and ground circuit. Refer to AV-69, "
DISPLAY UNIT : Diagnosis Procedure".
Is inspection result OK?
YES >> GO TO 2.
NO >> Repair malfunctioning parts.
2.CHECK CONTINUITY CO MMUNICATION CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M93 and AV control unit connector M43.
3. Check continuity between display unit harness connector M93 (A) terminals 11, 22 and AV control unit harness connector M43
(B) terminals 30, 31.
4. Check continuity between display unit harness connector M93 (A) terminals 11, 22 and ground.
Part name Description
DISPLAY UNIT • 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 the 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] • Display unit power supply and ground circuit malfunc-
tion is detected.
• Malfunction is detected on communication circuit be- tween display unit and AV control unit.
• Malfunction is detected on communication signal be-
tween display unit and AV control unit. • Display unit power supply and
ground circuit.
• Communication circuit between display unit and AV control unit.
AB Continuity
Connector Terminal Connector Terminal
M93 11
M43 30
Ye s
22 31
A —Contin u it y
Connector Terminal
M93 11
Ground No
22
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Revision: April 20092010 QX56

AV
U1243 DISPLAY UNITAV-61
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
Are continuity results as specified?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK COMMUNICATION SIGNAL
1. Connect display unit connector M93 and AV control unit connec-
tor M43.
2. Turn ignition switch ON.
3. Check signal between display unit harness connector M93 ter- minal 11 and ground.
Are voltage readings as specified?
YES >> GO TO 4.
NO >> Replace AV control unit. Refer to AV-169, "
Removal and Installation".
4.CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector M93 terminal
22 and ground.
Are voltage readings as specified?
YES >> Inspection end.
NO >> Replace display unit. Refer to AV-171, "
Removal and Installation".
Connector Te r m i n a l s
Reference Signal
(+) (-)
M93 11 Ground
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PKIB5039J
Connector Te r m i n a l s
Reference Signal
(+) (-)
M93 22 Ground
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PKIB5039J
Revision: April 20092010 QX56

AV-62
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1244 GPS ANTENNA
U1244 GPS ANTENNA
DescriptionINFOID:0000000005146289
DTC LogicINFOID:0000000005146290
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000005146291
Regarding Wiring Diagram information, refer to
AV-116, "Wiring Diagram".
1.GPS ANTENNA CHECK
Inspect GPS antenna and antenna feeder for damage or poor connection.
Is the GPS antenna and feeder clean and undamaged?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning parts.
2.CHECK AV CONTROL UNIT VOLTAGE
1. Turn ignition switch ON.
2. Check voltage between AV control unit connector M124 terminal 116 and ground.
Is the voltage reading as specified?
YES >> Replace GPS antenna. Refer to AV-186, "Removal and
Installation".
NO >> Replace AV control unit. Refer to AV-169, "
Removal and
Installation".
Part Name Description
GPS ANTENNA GPS signal is detected and transmitted to the AV control unit.
DTC CONSULT-III display Detection condition
U1244 GPS ANTENNA CONN
[U1244]
GPS antenna connection malfunction is detected.
116 - Ground
: Approx. 5V
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Revision: April 20092010 QX56

AV
U1250 CAMERA CONTROL UNITAV-63
< COMPONENT DIAGNOSIS > [AUDIO SYSTEM]
C
D
E
F
G H
I
J
K L
M B A
O P
U1250 CAMERA CONTROL UNIT
DescriptionINFOID:0000000005146292
DTC LogicINFOID:0000000005146293
Diagnosis ProcedureINFOID:0000000005146294
Regarding Wiring Diagram information, refer to AV-116, "Wiring Diagram".
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 M45 (A) terminal 84 and camera control unit harness connector
B73 (B) terminal 5.
3. Check continuity between AV control unit harness connector M45 (A) terminal 84 and ground.
Are the continuity results as specified?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK AV CONTROL UNIT VOLTAGE
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 sent to rear view camera.
• Controlled by audio communication sent 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 Condit
ion Possible causes
U1250 CAMERA CONT. CONN
[U1250] A malfunction is detected in camera-connection recogni-
tion signal circuit. Camera-connection recognition sig-
nal circuit.
AB
Continuity
Connector Terminal Connector Terminal
M45 84 B73 5 Yes
A —Con tin uit y
Connector Terminal
M45 84Ground No
ALNIA0401GB
Revision: April 20092010 QX56