Page 659 of 3383
AV-66
TELEPHONE
Revision: November 20092006 QX56
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.
Audio Unit
The audio unit receives signals from the Bluetooth control unit and sends audio signals to the speakers.
Page 662 of 3383

TELEPHONEAV-69
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Revision: November 2009 2006 QX56
Terminals and Reference Value for Bluetooth Control UnitEKS00GBO
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symptom
+ – Ignition
switch Operation
1 (Y) Ground Battery
powerInput
–– Battery voltageSystem does not
work properly.
2 (V) Ground ACC power Input ACC/
ON –
Battery voltage System does not
work properly.
3 (G/R) Ground IGN power Input ON/
START –
Battery voltage System 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 ) –Mute –– – ––
12 (R/G) Ground Remote
control A Input ON Press MODE
switch Approx. 0V
Steering wheel audio
controls do not func-
tion.
Press SEEK UP
switch Approx. 0.75V
Press VOL UP switch Approx. 2V
Except for above Approx. 5V
13 (G/W) Ground Remote
control B Input ON Press POWER
switch Approx. 0V
Steering wheel audio
controls do not func-
tion.
Press SEEK
DOWN switch Approx. 0.75V
Press VOL
DOWN switch Approx. 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) Ground AV switch 1 Output On Press MODE
switch Approx. 0V
Steering wheel audio controls do not func- tion.
Press SEEK UP
switch Approx. 0.75V
Press VOL UP switch Approx. 2V
Except for above Approx 5V
18 (G/O) Ground AV switch 2 Output ON Press POWER
switch Approx. 0V
Steering wheel audio controls do not func- tion.
Press SEEK
DOWN switch Approx. 0.75V
Prees VOL
DOWN switch Approx. 2V
Except for above Approx 5V
19 (R/B) - AV switch
ground -- -
-Steering wheel audio
controls do not func- tion.
21 (B) - Ground - - -- –
Page 663 of 3383
AV-70
TELEPHONE
Revision: November 20092006 QX56
28 (W/R)–Speed sig-
nal –– –
––
29 (R/W) –Microphone
power –– –
––
33 –Bluetooth
antenna sig-
nal Input
–– ––
Terminal
(Wire color) ItemSignal
input/
output Condition
Reference value
(Approx.) Example of symptom
+ – Ignition
switch Operation
Page 664 of 3383

TELEPHONEAV-71
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Revision: November 2009 2006 QX56
Bluetooth Control Unit Self-Diagnosis FunctionEKS00GBP
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.
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.
WKIA4446E
WKIA4447E
Page 665 of 3383

AV-72
TELEPHONE
Revision: November 20092006 QX56
Power Supply and Ground Circuit Check for Bluetooth Control UnitEKS00GBQ
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 malfunction before installing new fuse. Refer to PG-
4, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect Bluetooth control unit connector B141.
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.
Terminals Ignition SwitchFuse No.
Connector Terminal
B141 1
All positions31
2 ACC/ON4
3 ON/START12
Terminals Ignition switch position
(+) (– )OFFACC ON
Connector Terminal
B141 1
Ground Battery
voltage Battery
voltage Battery
voltage
20 VBattery
voltage Battery
voltage
30 V0V Battery
voltage
WKIA4389E
Terminals Continuity
Connector Terminal—
B141 4
Ground Yes
21
WKIA4556E
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TELEPHONEAV-73
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Revision: November 2009 2006 QX56
Removal and InstallationEKS00GBR
BLUETOOTH CONTROL UNIT
Removal
1. Disconnect battery negative terminal.
2. Remove front passenger seat. Refer to SE-91, "
FRONT SEAT" .
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
CAUTION:
To avoid damage use care when removing console finisher.
Sunroof switch (2).
Microphone (3).
Front personal/map lamp LH (4).
Interior lamp switch (5).
Front personal/map lamp RH (6).
1. Remove console assembly, roof finisher.
2. Release Bluetooth ON indicator tabs.
3. Disconnect Bluetooth ON indicator connector.
4. Remove Bluetooth ON indicator (1).
Installation
Installation is in the reverse order of removal.
MICROPHONE
Removal
CAUTION:
To avoid damage use care when removing console finisher.
Bluetooth on indicator (1).
Sunroof switch (2).
LKIA0681E
LKIA0667E
Page 693 of 3383

AV-100
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for NAVI Control UnitEKS00GC1
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltag e
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
1 (B) Ground Ground –ON – 0V–
2 (Y) Ground Battery
power Input OFF
–Battery voltage System does not
work properly.
5 (O) Ground ACC signal Input ACC –Battery voltage System does not
work properly.
12 (B) 14 (W) Voice guide
signal Output ON
Press the “
GUIDE/
VOICE ” button. Only route guide
and operation
guide are not
heard.
13 –Shield
ground –– –
–Audio noise
interference.
44 (R) 47 RGB signal
(R: red) Output ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/ ADJUSTMENT function. NAVI screen
looks bluish.
45 (R/W) 47 RGB signal
(G: green) Output ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/ ADJUSTMENT
function. NAVI screen
looks reddish.
46 (B) 47 RGB signal
(B: blue) Output ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/
ADJUSTMENT function. NAVI screen
looks yellowish.
47 –Shield
ground –– –
–Video display
interference.
48 (BR) 49 RGB syn-
chronizing signal Output ON
Press the
“MAP ”
button. NAVI screen is
rolling.
49 –Shield
ground –– –
–Video display
interference.
SKIA0171J
SKIA4977E
SKIA4978E
SKIA4979E
SKIA0164E
Page 697 of 3383

AV-104
NAVIGATION SYSTEM
Revision: November 20092006 QX56
41–Shield
ground –– –
––
42 (W/L) Ground Audio RX
communica- tion signal Input ON
Operate audio
volume. Audio does not
operate properly.
43 (W) 41 RGB syn-
chronizing signal Input ON
Press the
“MAP ”
button. NAVI screen is
rolling.
44 (R/L) 45 RGB signal
(R: red) Input ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/
ADJUSTMENT function. NAVI screen
looks bluish.
45 –Shield
ground –– –
––
46 (R/W) 45 RGB signal
(G: green) Input ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/ ADJUSTMENT function. NAVI screen
looks reddish.
47 –Shield
ground –– –
––
48 (B) 45 RGB signal
(B: blue) Input ON Select
“Display
Diagnosis (NAVI) ” of
CONFIRMATION/
ADJUSTMENT function. NAVI screen
looks yellowish.
49 –Shield
ground –– –
––
50 (R/L) 47 RGB signal
(R: red) Output ON Select
“Display
Diagnosis (DCU) ” of
CONFIRMATION/ ADJUSTMENT
function. NAVI screen
looks bluish.
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltag e
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
SKIA4403E
SKIA0164E
SKIA4977E
SKIA4978E
SKIA4979E
SKIA4980E