2007 INFINITI QX56 ignition

AV-90
< SERVICE INFORMATION >
NAVIGATION SYSTEM
49 – Shield ground – – – –Video display in-
terference.
61 (R/L) GroundIllumination
signalInput ONLighting switch in 1st
positionBattery voltageDisplay unit illu-
mination does
not change
when lighting
switch is turned
to 1st position.- Lighting switch is
OFF3V or less
63 (G/R) Ground Ignition signal Input ON – Battery voltageNavigation cur-
rent location
mark does not
indicate the cor-
rect position.
65 (G/W) GroundReverse
signalInput ONA/T selector lever in
R positionBattery voltageThe navigation
current-location
mark moves
strangely when
the vehicle is
moving back-
wards. A/T selector lever
not in R position0V
66 (W/R) GroundVeh icl e
speed signal
(8-pulse)Input ONWhen 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) GroundCommunica-
tion signal (+)Input/
outputON –System does not
work properly.
70 (P) GroundCommunica-
tion signal (–)Input/
outputON –System does not
work properly.
73 74 GPS signal Input ONConnector is not
connected.5VNavigation sys-
tem GPS correc-
tion is not
possible. Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
PKIA1935E
SKIA0175E
SKIA0176E

NAVIGATION SYSTEM
AV-91
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
AV
N
O
P
Terminal and Reference Value for Display Control unitINFOID:0000000003533714
Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
1 (Y) GroundBattery Pow-
erInput OFF – Battery voltageSystem does not
work properly.
2 (L/W) GroundPower Supply
(Inverter) Output ON – 9 VScreen is not
shown.
3 (B) Ground Ground – ON – 0 V –
4 (L/R) GroundPower Supply
(Signal) Output ON – 9 VScreen is not
shown.
5 (P) Ground(Inverter)
Ground –ON – 0 V –
6 (GR) GroundReverse
signalInput ONSelector lever in R
positionBattery voltage
Impossible to
gain direction of
vehicle. Selector lever not in
R position0 V
7 (P/L) Ground(Signal)
Ground –ON – 0 V –
10 (O) Ground ACC signal Input ACC – Battery voltageSystem does not
work properly.
12 (G/R) Ground Ignition signal Input ON – Battery voltageVehicle informa-
tion setting is not
possible.
13 (B) Ground Ground – ON – 0 V –
14 (R/L) GroundIllumination
signalInput OFFLighting switch posi-
tion 1st or 2ndBattery voltageDisplay unit
does not change
when lighting
switch is turned
to 1st position. Lighting switch posi-
tion OFF0 V
16 (W/R) GroundVehicle
speed signal
(8–pulse)Input ONWhen 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) GroundCommunica-
tion signal (+)Input/
OutputON –System does not
work properly.
29 – Shield ground – – – – –
SKIA0168E
SKIA0175E

AV-96
< SERVICE INFORMATION >
NAVIGATION SYSTEM
Terminal and Reference Value for AV Switch
INFOID:0000000003533716
18 (B) 7RGB signal
(B: blue)Input ONSelect “Display Di-
agnosis (DCU)” of
CONFIRMATION/
ADJUSTMENT
function.Screen looks
yellowish.
19 (G) 21RGB syn-
chronizing
signalInput ONPress the “TRIP”
button.NAVI screen is
rolling.
20 (W) 21Vertical syn-
chronizing
(VP) signalOutput ON –Operating
screen for audio
and A/C is not
displayed when
showing NAVI
screen.
21 – Shield ground – – – – –
22 (L) 23Display com-
munication
signal
(DSP-DCU)Output ON –Though a screen
is displayed, it is
impossible to ad-
just brightness.
23 – Shield ground – – – – – Terminal No. (Wire
color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Igni-
tion
switchOperation
SKIA4982E
SKIA0164E
SKIA4983E
SKIA4363E
Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Vo l ta g e
(Approx.)Example of
symptom
+–Ignition
switchOperation
1 (Y) Ground Battery power Input OFF - Battery voltageSystem does not
work properly.
2 (V) Ground ACC signal Input ACC - Battery voltageSystem does not
work properly.
3 (R/L) GroundIllumination
signalInput OFFLighting switch is
ON (position 1).Battery voltageAV switch illumi-
nation does not
come on when
lighting switch is
ON (position 1). Turn lighting switch
OFF.3.0V or less

NAVIGATION SYSTEM
AV-97
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
AV
N
O
P
Terminal and Reference Value for BCMINFOID:0000000003533717
Refer to BCS-11, "Terminal and Reference Value for BCM".
On Board Self-Diagnosis FunctionINFOID:0000000003533718
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 indi-
vidual 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 judg-
ment 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.
4 (BR) GroundIllumination
control signalInput ONIllumination control
switch is operated
by lighting switch in
1st position.Changes between 0 and 12V.AV switch illumi-
nation cannot be
controlled.
5 (B) Ground Ground - ON - 0V -
6 (V) GroundCommunica-
tion signal (+)Input/
outputON -System does not
work properly.
7 - Shield ground - - - - -
8 (LG) GroundCommunica-
tion signal (-)Input/
outputON -System does not
work properly.
12 (R) GroundRemote con-
trol AInput ONPress MODE switch 0V
Steering wheel
audio controls
do not function. Press SEEK UP
switch0.75V
Press VOL UP
switch2V
Except for above 5V
13 (G) GroundRemote con-
trol BInput ONPress POWER
switch 0V
Steering wheel
audio controls
do not function. Press SEEK
DOWN switch0.75V
Press VOL DOWN
switch2V
Except for above 5V
14 (L) -Remote con-
trol ground-- - -Steering wheel
audio controls
do not function. Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Vol tag e
(Approx.)Example of
symptom
+–Ignition
switchOperation
SKIA0175E
SKIA0176E

AV-98
< SERVICE INFORMATION >
NAVIGATION SYSTEM
DIAGNOSIS ITEM
NOTE:
Make the status that is set by D/N function be shown.
Self-Diagnosis Mode (DCU)INFOID:0000000003533719
OPERATION PROCEDURE
1. Start the engine.
2. Turn the audio system off.
Mode Description
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 anten-
na and operation of each unit.
CONFIRMATION/
ADJUSTMENTDisplay diagnosisIn 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 signalsIn display control unit mode, analyzes the following vehicle signals: Vehicle
speed signal, light signal
NOTE, ignition switch signal, and reverse signal.
Auto Climate Control A/C self-diagnosis of A/C system.
NavigationDisplay diagnosisIn 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 signalsIn NAVI C/U mode, analyzes the following vehicle signals: Vehicle speed
signal, light signal, ignition switch signal, and reverse signal.
History of ErrorsDiagnosis 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-
tionDisplay Lon-
gitude & Lat-
itudeDisplay the map. Use the joystick to adjust position. Longitude and latitude
will be displayed.
Speed Cali-
brationUnder ordinary conditions, the navigation system distance measuring func-
tion will automatically compensate for minute decreases in wheel and tire
diameter caused by tire wear or low-pressure. Speed calibration immedi-
ately restores system accuracy in cases such as when distance calibration
is needed because of the use of tire chains in inclement weather.
Angle ad-
justmentCorrects difference between actual turning angle of a vehicle and turning
angle of the car mark on the display.
Initialize Lo-
cationThis 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.

AV-100
< SERVICE INFORMATION >
NAVIGATION SYSTEM
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-86,
"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-134, "
Unable to Operate All of AV
Switches (Unable to Start Self-Diagnosis)".
• When display unit has a malfunction, you cannot start. Refer to AV-132, "
Screen Is Not Shown".
Self-Diagnosis Codes
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 NavigationGPS an-
tenna
Red×1
Gray×x2
xx 3
×××4
Diagnosis
No.Possible causeReference
page
1 Display control unit malfunction Refer to AV- 1 4 5
.
2 Display communication line between display control unit and display unit Refer to AV- 1 2 1
.
3Audio unit power supply and ground circuit
Audio communication line between display control unit and audio unitRefer to AV- 11 9
.
4NAVI control unit power supply and ground circuit
AV communication line between display control unit and NAVI control unitRefer to AV- 11 8
.

AV-102
< SERVICE INFORMATION >
NAVIGATION SYSTEM
6. 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.
7. 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. “Connection is normal. Please refer to the Confirma-
tion / Adjustment function or service manual for more detailed
diagnosis information."
• 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.
“Center Control Unit is abnormal”.
• When the switch is gray, the following comment will be shown.
“Self-diagnosis for DVD-ROM DRIVER of NAVI was not conducted because no DVD-ROM was avail-
able.”
SELF–DIAGNOSIS RESULT
Quick reference table
1. Select an 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-86,
"Wiring Diagram - COMM -".
3. Turn the ignition switch OFF and perform self-diagnosis again.
*: Center Control unit = NAVI control unit
CAUTION:
• When AV switch has a malfunction, you cannot start. Refer to AV-134, "
Unable to Operate All of AV
Switches (Unable to Start Self-Diagnosis)".
• When display unit has a malfunction, you cannot start. Refer to AV-132, "
Screen Is Not Shown".
Self-diagnosis codes
Green : Not malfunctioning.
Yellow : Cannot be judged by self-diagnosis results.
Red : Unit is malfunctioning.
Gray : Diagnosis has not been done.
WKIA4441E
WKIA4442E
Screen switch
Diagnosis No.
Switch color Center control unit* GPS antenna
Red×1
Gray×2
Ye l l o w×3
×4
××5
Diagnosis
No.Possible causeReference
page
1 NAVI control unit malfunction.Refer to
AV- 1 4 5
2 No map DVD-ROM is inserted in the NAVI control unit.Refer to
AV- 1 2 3

AV-104
< SERVICE INFORMATION >
NAVIGATION SYSTEM
5. When “Confirmation/Adjustment” is selected on the initial self-
diagnosis screen, the operation will enter the CONFIRMATION/
ADJUSTMENT mode. In this mode, check and adjustment of
each item will become possible.
6. The initial trouble diagnosis screen will be shown, and items
“Display Diagnosis”, “Vehicle Signals”, “Auto Climate Control”
and “Navigation” will become selective.
7. Select each switch on “CONFIRMATION/ADJUSTMENT”
screen to display the relevant diagnosis screen.
DISPLAY DIAGNOSIS
• When RGB signal error occurred in the RGB system, tone of the color bar will change as follows.
• When the color of the screen looks unusual, refer to AV-125, "
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Bluish)", AV-129, "Color of RGB Image Is Not Proper (All Screens Look Reddish)" and AV-
129, "Color of RGB Image Is Not Proper (All Screens Look Yellowish)".
VEHICLE SIGNALS
• A comparison check can be made of each actual vehicle signal
and the signals recognized by the system.
CAUTION:
In case of confirming light signal, set D/N mode to ON/OFF of
lighting switch (normal setting).
• OFF: D (Day mode)
• ON: N (Night mode)
Unless above setting, light signal (ON/OFF) may not be accu-
rately displayed.
SKIA4220E
WKIA4316E
R (red) signal error : Screen looks bluish
G (green) signal error : Screen looks reddish
B (blue) signal error : Screen looks yellowish
WKIA4306E
Diagnosis item Display Condition Remarks
Vehicle speedON Vehicle speed > 0 km/h (0 MPH)
Changes in indication may be delayed by ap-
prox. 1.5 seconds. This is normal. OFF Vehicle speed = 0 km/h (0 MPH)
– Ignition switch in ACC position