2007 INFINITI QX56 service

AUDIO ANTENNA
AV-55
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•When measuring continuity, wrap tin foil around the top of
probe. Then, press the foil against the wire with your finger.
2. If an element is broken, no continuity will exist.
3. To locate a break, move probe along element. Tester indication
will change abruptly when probe passes the broken point.
ELEMENT REPAIR
Refer to GW-81, "Filament Repair".
SEL122R
SEL252I
SEL253I

AV-56
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TELEPHONE
TELEPHONE
Component Parts and Harness Connector LocationINFOID:0000000003533692
System DescriptionINFOID:0000000003533693
BLUETOOTH® HANDS-FREE PHONE SYSTEM
Refer to the Owner's Manual for Bluetooth telephone system operating instructions.
NOTE:
Cellular telephones must have their wireless connection set up (paired) before using the Bluetooth telephone
system.
WKIA4565E
1. Fuse block (J/B) 2. Fuse and fusible link box 3. Fuse and relay box
4. Combination meter
M245. AV switch
M986. Audio unit
M45
7. BCM
M18, M198. Steering wheel audio control
switches9. Microphone
R108
10. Bluetooth ON indicator
R1611. Bluetooth control unit
B141, B142
(View with seat removed)

TELEPHONE
AV-57
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Bluetooth telephone system allows users who have a Bluetooth cellular telephone to make a wireless connec-
tion between their cellular telephone and the Bluetooth control unit. Hands-free cellular telephone calls can be
sent and received. Personal memos can be created using the Infinity Voice Recognition system. Some Blue-
tooth cellular telephones may not be recognized by the Bluetooth control unit. When a cellular telephone or
the Bluetooth control unit is replaced, the telephone must be paired with the Bluetooth control unit. Different
cellular telephones may have different pairing procedures. Refer to the cellular telephone operating manual.
Bluetooth Telephone System Diagram
Bluetooth Control Unit
When the ignition switch is turned to ACC or ON, the Bluetooth control unit will power up. During power up, the
Bluetooth control unit is initialized and performs various self checks. Initialization may take up to 10 seconds.
During this time the Bluetooth ON indicator will flash until initialization is complete. Infinity Voice Recognition
will then become active and the Bluetooth ON indicator will remain on. Bluetooth telephone functions can be
turned off using the voice recognition system.
BCM
The BCM supplies power for the Bluetooth ON indicator.
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 Bluetooth control module uses this
signal to perform various functions while navigating 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
AV Switch
Call volume can be adjusted using the AV switch.
Microphone
The microphone is located in the roof console assembly. The microphone sends a signal to the Bluetooth con-
trol unit.
Combination Meter
The combination meter supplies speed signals to the Bluetooth control unit. Vehicle speed signals are used to
determine which voice command functions will be disabled based on driving conditions.
Bluetooth ON Indicator
The Bluetooth ON indicator is located in the overhead console. The indicator will flash during power up while
the Bluetooth control unit is initializing. This process may take up to 10 seconds. After initialization, the indica-
tor will remain on to indicate that the system is ready for voice commands.
WKIA4569E

AV-58
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TELEPHONE
Audio Unit
The audio unit receives signals from the Bluetooth control unit and sends audio signals to the speakers.
Wiring Diagram - H/PHONE -INFOID:0000000003533694
WKWA3603E

TELEPHONE
AV-59
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AWNWA0332G

AV-60
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TELEPHONE
Terminal and Reference Value for Bluetooth Control Unit
INFOID:0000000003533695
Bluetooth Control Unit Self-Diagnosis FunctionINFOID:0000000003533696
The Bluetooth control unit has two diagnostic checks. The first diagnostic check is performed automatically
every ignition cycle during control unit initialization. The second diagnostic check is performed by the techni-
cian using the steering wheel audio control switches prior to trouble diagnosis.
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
1 (Y) GroundBattery pow-
erInput – – Battery voltageSystem does not
work properly.
2 (V) Ground ACC power InputACC/
ON– Battery voltageSystem does not
work properly.
3 (G/R) Ground IGN power InputON/
START– Battery voltageSystem does not
work properly.
4 (B) – Ground – – – – –
6–Shield –– – – –
7 (B) 8 (R/L) Mic-in signal Input ON – – –
9 (R/W) 10 (R) Audio out Output – – – –
11 ( B ) – M u t e – – – – –
12 (R/G) GroundRemote
control AInput ONPress MODE
switch Approx. 0V
Steering wheel audio
controls do not func-
tion. Press SEEK UP
switchApprox. 0.75V
Press VOL UP
switchApprox. 2V
Except for above Approx. 5V
13 (G/W) GroundRemote
control BInput ONPress POWER
switch Approx. 0V
Steering wheel audio
controls do not func-
tion. Press SEEK
DOWN switchApprox. 0.75V
Press VOL
DOWN switchApprox. 2V
Except for above Approx. 5V
14 (Y/R) -Remote
control
ground-- - -Steering wheel audio
controls do not func-
tion.
15 (GR) - LED - - - - -
17 (V) - - - - - - -
18 (G/O) - - - - - - -
19 (R/B) - - - - - - -
21 (B) – Ground – – – – –
28 (W/R) –Speed sig-
nal–– – – –
29 (R/W) –Microphone
power–– – – –
33 –Bluetooth
antenna sig-
nalInput – – – –

TELEPHONE
AV-61
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BLUETOOTH CONTROL UNIT INITIALIZATION CHECKS
• Internal control unit failure
• Bluetooth antenna connection open or shorted
• Steering wheel audio control switches (SEND/END) stuck closed
• Vehicle speed pulse count
• Microphone connection test (with playback to operator)
• Bluetooth inquiry check
STARTING THE DIAGNOSTIC MODE
1. Turn ignition switch to ACC or ON.
2. Wait for the Bluetooth system to complete initialization and the Bluetooth ON indicator to stop flashing.
This may take up to 10 seconds.
3. Press and hold the steering wheel audio control switch SEND
button for at least 5 seconds. The Bluetooth system will begin to
play a verbal prompt.
4. While the prompt is playing, momentarily press both the steering
wheel audio control switches SEND and END buttons simulta-
neously. The Bluetooth system will sound a 5 second beep.
5. While the beep is sounding, momentarily press both the steering
wheel audio control switches SEND and END buttons simulta-
neously again.
6. The Bluetooth system has now entered into the diagnostic
mode. Results of the diagnostic checks will be verbalized to the
technician by the system.
Power Supply and Ground Circuit Inspection for Bluetooth Control UnitINFOID:0000000003533697
1.CHECK FUSES
Make sure the following fuses for the Bluetooth control unit are not blown.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of blown fuse before installing new fuse. Refer to PG-
3.
2.CHECK POWER SUPPLY CIRCUIT
1. Disconnect Bluetooth control unit connector B141.
WKIA4446E
WKIA4447E
Te r m i n a l s
Ignition Switch Fuse No.
Connector Terminal
B1411 All positions 31
2 ACC/ON 4
3 ON/START 12

AV-62
< SERVICE INFORMATION >
TELEPHONE
2. Check voltage between connector terminals and ground as fol-
lows.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between Bluetooth control unit and fuse.
3.CHECK GROUND CIRCUITS
1. Turn ignition switch OFF.
2. Check continuity between the following Bluetooth control unit
terminals and ground.
OK or NG
OK >> Inspection End.
NG >> Repair or replace harness.
Removal and InstallationINFOID:0000000003533698
BLUETOOTH CONTROL UNIT
Removal
1. Disconnect battery negative terminal.
2. Remove front passenger seat. Refer to SE-83
.
3. Remove Bluetooth control unit kick shield screws (A) and
remove bluetooth control unit kick shield (1).
4. Disconnect Bluetooth control unit harness connectors.
5. Remove Bluetooth control unit screws (B).
6. Remove Bluetooth control unit (2) from bluetooth control unit
bracket.
Installation
Installation is in the reverse order of removal.
NOTE:
When replacing bluetooth control unit, Perform pairing procedure. Refer to Owner's Manual Pairing Proce-
dure.
BLUETOOTH ON INDICATOR
Removal
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Connector Terminal
B1411
GroundBattery
voltageBattery
voltageBattery
voltage
20VBattery
voltageBattery
voltage
30V0VBattery
voltage
WKIA4389E
Te r m i n a l s
Continuity
Connector Terminal —
B1414
Ground Yes
21
WKIA4556E
LKIA0681E