display INFINITI QX56 2006 Factory Service Manual

NAVIGATION SYSTEMAV-101
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Revision: November 2009 2006 QX56
61 (R/L) GroundIllumination
signal Input ON Lighting switch in
1st position Battery voltage
Display unit illu-
mination does
not change
when lighting
switch is turned
to 1st position.-
Lighting switch is
OFF 3V or less
63 (G/R) Ground Ignition signal Input ON –Battery voltage Navigation cur-
rent location
mark does not
indicate the cor-
rect position.
65 (G/W) Ground Reverse
signal Input ON A/T selector lever in
R position Battery voltage
The navigation
current-location
mark moves
strangely when
the vehicle is
moving back-
wards.
A/T selector lever
not in R position 0V
66 (W/R) Ground Ve h ic l e
speed signal
(8-pulse) Input ON
When vehicle speed
is approx. 40 km/h
(25 MPH) Navigation cur-
rent location
mark does not
indicate the cor-
rect position.
68 –Shield
ground –– –
––
69 (L) Ground Communica-
tion signal (+) Input/
output ON
– System does not
work properly.
70 (P) Ground Communica-
tion signal ( –) Input/
output ON
– System does not
work properly.
73 74 GPS signal Input ON Connector is not
connected. 5VNavigation sys-
tem GPS correc-
tion is not
possible.
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltage
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
PKIA1935E
SKIA0175E
SKIA0176E

AV-102
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for Display Control unitEKS00BJL
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltag e
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
1 (Y) Ground Battery
Power Input OFF
–Battery voltage System does not
work properly.
2 (L/W) Ground Power Sup-
ply (Inverter) Output ON
–9 VScreen is not
shown.
3 (B) Ground Ground –ON – 0 V –
4 (L/R) Ground Power Sup-
ply (Signal) Output ON
–9 VScreen is not
shown.
5 (P) Ground (Inverter)
Ground –
ON – 0 V –
6 (GR) Ground Reverse
signal Input ON Selector lever in R
position Battery voltage
Impossible to
gain direction of
vehicle.
Selector lever not in
R position 0 V
7 (P/L) Ground (Signal)
Ground –
ON – 0 V –
10 (O) Ground ACC signal Input ACC –Battery voltage System does not
work properly.
12 (G/R) Ground Ignition signal Input ON –Battery voltage Vehicle informa-
tion setting is not
possible.
13 (B) Ground Ground –ON – 0 V –
14 (R/L) Ground Illumination
signal Input OFF Lighting switch posi-
tion 1st or 2nd Battery voltageDisplay unit
does not change
when lighting
switch is turned
to 1st position.
Lighting switch posi-
tion OFF 0 V
16 (W/R) Ground Vehicle
speed signal
(8 –pulse) Input ON
When vehicle speed
is approx. 40 km/h
(25 MPH) Value of vehicle
speed informa-
tion is not accu-
rately displayed.
25 (L) –CAN-H –– – ––
26 (P) –CAN-L –– – ––
28 (V) Ground Communica-
tion signal (+) Input/
Output ON
– System does not
work properly.
29 –Shield
ground –– –
––
SKIA0168E
SKIA0175E

NAVIGATION SYSTEMAV-103
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Revision: November 2009 2006 QX56
30 (LG) GroundCommunica-
tion signal ( –) Input/
output ON
– System does not
work properly.
32 (L) Ground Communica-
tion signal (+) Input/
output ON
– System does not
work properly.
33 –Shield
ground –– – – –
34 (P) Ground Communica-
tion signal ( –) Input/
output ON
– System does not
work properly.
36 (B/W) 37 Display Com-
munication signal
(DCU-DSP) Output ON
Press the “
TRIP”
button. Though a screen
is displayed, it is
impossible to
adjust bright-
ness.
37 –Shield
ground –– –
––
38 (L) 37 Display Com-
munication
signal
(DSP-DCU) Input ON
Press the “
TRIP”
button. Though a screen
is displayed, it is
impossible to
adjust bright-
ness.
39 –Shield
ground –– –
––
40 (O/L) Ground Audio TX
Communica- tion signal Output ON
Operate audio
volume. Audio does not
operate properly.
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltage
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
SKIA0176E
SKIA0175E
SKIA0176E
SKIA4364E
SKIA4363E
SKIA4402E

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

NAVIGATION SYSTEMAV-105
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Revision: November 2009 2006 QX56
51 (B) 49RGB area
(YS) signal Output ON
Press the
“TRIP ”
button. RGB screen is
not shown.
52 (R/W) 47 RGB signal
(G: green) Output ON Select
“Display
Diagnosis (DCU) ” of
CONFIRMATION/ ADJUSTMENT function. Screen looks
reddish.
53 (W) 49 Vertical syn-
chronizing
(VP) signal Input ON
– Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
54 (B) 47 RGB signal
(B: blue) Output ON Select
“Display
Diagnosis (DCU) ” of
CONFIRMATION/ ADJUSTMENT
function. Screen looks
yellowish.
55 (R) 49 Horizontal
synchroniz-
ing (HP) sig- nal Input ON
– Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
56 (G) 49 RGB syn-
chronizing signal Output ON
Press the “
TRIP”
button. NAVI screen is
rolling.
Terminal No.
(Wire color)
ItemSignal
input/
output Condition
Voltage
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
SKIA0162E
SKIA4981E
SKIA4983E
SKIA4982E
SKIA4983E
SKIA0164E

AV-106
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Terminals and Reference Value for Display unitEKS00BJM
Terminal No. (Wire
color)
ItemSignal
input/
output Condition
Voltage
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
1 (B) Ground Ground –ON – 0 V –
2 (L/W) Ground Power sup-
ply (Inverter) Input ON
– 9 VScreen is not
shown.
3 (L/R) Ground Power sup-
ply (Signal) Input ON
– 9 VScreen is not
shown.
6 (R/W) 7 RGB signal
(G: green) Input ON Select
“Display
Diagnosis (DCU) ” of
CONFIRMATION/
ADJUSTMENT function. Screen looks
reddish.
7 –Shield
ground –– –
––
8 (R) 21 Horizontal
synchroniz-
ing (HP) sig-
nal Output ON
– Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
9 (B) 21 RGB area
(YS) signal Input ON Press the “
TRIP”
button. RGB screen is
not shown.
11 (B/W) 23 Display com-
munication signal
(DCU-DSP) Input ON
– Though a screen
is displayed, it is
impossible to
adjust bright-
ness.
13 (P) Ground (Inverter)
Ground –
ON – 0 V –
14 (P/L) Ground (Signal)
Ground –
ON – 0 V –
17 (R/L) 7 RGB signal
(R: red) Input ON Select
“Display
Diagnosis (DCU) ” of
CONFIRMATION/ ADJUSTMENT
function. Screen looks
bluish.
SKIA4981E
SKIA4983E
SKIA0162E
SKIA4364E
SKIA4980E

NAVIGATION SYSTEMAV-107
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Revision: November 2009 2006 QX56
18 (B) 7RGB signal
(B: blue) Input ON Select
“Display
Diagnosis (DCU) ” of
CONFIRMATION/
ADJUSTMENT function. Screen looks
yellowish.
19 (G) 21 RGB syn-
chronizing signal Input ON
Press the
“TRIP ”
button. NAVI screen is
rolling.
20 (W) 21 Ve r ti c a l s y n -
chronizing
(VP) signal Output ON
– Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
21 –Shield
ground –– –
––
22 (L) 23 Display com-
munication signal
(DSP-DCU) Output ON
– Though a screen
is displayed, it is
impossible to
adjust bright-
ness.
23 –Shield
ground –– –
––
Terminal No. (Wire
color)
ItemSignal
input/
output Condition
Vo l ta g e
(Approx.) Example of
symptom
+ – Igni-
tion
switch Operation
SKIA4982E
SKIA0164E
SKIA4983E
SKIA4363E

NAVIGATION SYSTEMAV-111
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Revision: November 2009 2006 QX56
On Board Self-Diagnosis FunctionEKS00BJP
DESCRIPTION

Diagnosis function consists of the self-diagnosis mode performed automatically and the CONFIRMATION/
ADJUSTMENT mode operated manually.

Self-diagnosis mode checks for connections between the units constituting this system, analyzes each
individual unit at the same time, and displays the results on the LCD screen.

CONFIRMATION/ADJUSTMENT mode is used to perform trouble diagnosis that require operation and
judgment by an operator (trouble that cannot be automatically judged by the system), to check/change the
set value, and to display the History of Errors of the navigation system.
DIAGNOSIS ITEM
NOTE:
Make the status that is set by D/N function be shown.
ModeDescription
Self-diagnosis (DCU) Display control unit diagnosis.
Self-diagnosis (NAVI)

NAVI Control unit diagnosis (DVD-ROM drive) will not be diagnosed
when no map DVD-ROM is in it.

Analyzes connection between the NAVI control unit and the GPS
antenna and operation of each unit.
CONFIRMATION/
ADJUSTMENT Display diagnosis
In display control unit mode, color tone and shading of the screen can be
checked by the display of a color bar and a gray scale.
Vehicle signals In display control unit mode, analyzes the following vehicle signals: Vehi-
cle speed signal, light signal
NOTE , ignition switch signal, and reverse sig-
nal.
Auto Climate Control A/C self-diagnosis of A/C system.
Navigation Display diagnosis
In NAVI C/U mode, color tone and shading of the screen can be checked
by the display of a color bar and a gray scale.
Vehicle signals In NAVI C/U mode, analyzes the following vehicle signals: Vehicle speed
signal, light signal, ignition switch signal, and reverse signal.
History of Errors Diagnosis results previously stored in the memory (before turning ignition
switch ON) are displayed in this mode. Time and location when/where the
errors occurred are also displayed.
Naviga-
tion Display Lon-
gitude & Lat-
itude
Display the map. Use the joystick to adjust position. Longitude and latitude
will be displayed.
Speed Cali-
bration Under ordinary conditions, the navigation system distance measuring
function will automatically compensate for minute decreases in wheel and
tire diameter caused by tire wear or low-pressure. Speed calibration imme-
diately restores system accuracy in cases such as when distance calibra-
tion is needed because of the use of tire chains in inclement weather.
Angle
adjustment Corrects difference between actual turning angle of a vehicle and turning
angle of the car mark on the display.
Initialize
Location This mode is for initializing the current location. Use when the vehicle is
transported a long distance on a trailer, etc.
CAN DIAG SUPPORT MONITOR Display status of CAN communication.

NAVIGATION SYSTEMAV-113
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Revision: November 2009 2006 QX56
6. When the self-diagnosis completes, optional part confirmation
screen will be shown.

When connection of an optional part is judged error, a screen
to check if the optional part is actually fitted on the vehicle or
not will be shown. When fitted, select the switch of the part on
the screen and press “End”. Then the “SELF DIAGNOSIS”
screen will be shown.

When the optional part is connected normally, the switch for
the part will not appear on the screen.
7. On the “SELF DIAGNOSIS ” screen, each unit name will be col-
ored according to the diagnosis result, as follows.

If several malfunctions are present in a unit, color of its switch
on the screen will be either red, yellow, or gray, determined by
the malfunction of the highest priority.
8. Select a switch on the “SELF DIAGNOSIS ” screen and com-
ments for the diagnosis results will be shown.

When the switch is green, the following comment will be
shown. “Self-diagnosis was successful. Further diagnosis and
adjustments are recommended. Follow the “confirmation/
adjustment ” menu or refer to the service manual. ”

When the switch is yellow, the following comment will be
shown. “Connection to the following unit is abnormal. See the
service manual for further details ”.

When the switch is red, the following comment will be shown.
“DCU is abnormal”.
SELF–DIAGNOSIS RESULT
Quick reference table
1. Select a malfunctioning diagnosis No. in the diagnosis result quick reference table.
2. Find estimated malfunctioning system in the diagnosis No. table and perform check by referring to AV- 9 7 ,
"Wiring Diagram — COMM —" .
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: DCU = Display control unit
CAUTION:

When AV switch has a malfunction, you cannot start. Refer to AV- 1 5 5 , "Unable to Operate All of AV
Switches (Unable to Start Self-Diagnosis)" .

When display unit has a malfunction, you cannot start. Refer to AV- 1 5 3 , "Screen is Not Shown" .
SKIA4209E
Green : Not malfunctioning.
Yellow : Cannot be judged by self-diagnosis results.
Red : Unit is malfunctioning.
Gray : Diagnosis has not been done.
WKIA1189E
SKIA4211E
Screen switch
Diagnosis No.
Switch color DCU* DISPLAY Audio unit Navigation GPS
antenna
Red × 1
Gray ×
x2
xx 3
×× ×4

AV-114
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Self-Diagnosis Codes
Self-Diagnosis Mode (NAVI)EKS00GE0
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
3. While pressing the “MEMORY 4” button, turn the volume control
dial clockwise or counterclockwise for 30 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)

Shifting from current screen to previous screen is performed
by pressing “BACK” button.
4. The initial self-diagnosis screen will be shown, and items “Self- Diagnosis (DCU) ”, “Self-Diagnosis (NAVI) ”, “Confirmation/
Adjustment” and “CAN DIAG SUPPORT MONITOR ” will
become selective.
Diagnosis
No. Possible cause
Reference
page
1 Display control unit malfunction Refer to AV-167
.
2 Display communication line between display control unit and display unit Refer to AV-138
.
3 Audio unit power supply and ground circuit
Audio communication line between display control unit and audio unit
Refer to
AV-136
.
4 NAVI control unit power supply and ground circuit
AV communication line between display control unit and NAVI control unit Refer to AV-135
.
WKIA4439E
SKIA4207E