display INFINITI QX56 2006 Factory Service Manual

AV-116
NAVIGATION SYSTEM
Revision: November 20092006 QX56

When display unit has a malfunction, you cannot start. Refer to AV- 1 5 3 , "Screen is Not Shown" .
Self-diagnosis codes
Diagnosis
No. Possible cause Reference
page
1 NAVI control unit malfunction. Refer to
AV- 1 6 6
2 No map DVD-ROM is inserted in the NAVI control unit. Refer to
AV- 1 4 0
3 When
“DVD-ROM error. Please check disc. ” is shown.
1. Eject map DVD-ROM and check if it is compatible with the system.
2. Check ejected DVD-ROM for dirt, damage, and warpage.
3. If no error is found, insert a known good map DVD-ROM of the same type and perform self-diagno- sis again. If same result is shown, the NAVI control unit is malfunctioning. If result is normal, the map
DVD-ROM is malfunctioning. Refer to
AV- 1 4 1
4 If “
Error found in DVD-ROM or DVD-ROM driver in control unit. Please perform diagnosis in accor-
dance with service manual ” is shown, carry out same inspection as diagnosis No. 3. Refer to
AV- 1 4 1
5 GPS antenna system.
1. Visually check for a broken wire in the GPS antenna coaxial cable.
2. Disconnect GPS antenna connector, and make sure approximately 5V is supplied from the NAVI
control unit. If not, the NAVI control unit is malfunctioning. If 5V is supplied, replace the GPS
antenna. If the connection is still malfunction after the replacement of the GPS antenna, the NAVI
control unit is malfunctioning. Refer to
AV- 1 4 1

NAVIGATION SYSTEMAV-117
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Confirmation/Adjustment ModeEKS00GE1
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.
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.
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AV-118
NAVIGATION SYSTEM
Revision: November 20092006 QX56
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- 1 4 6 , "Color of RGB Image is Not Proper (All
Screens Look Bluish)" , AV- 1 4 7 , "Color of RGB Image is Not Proper (All Screens Look Reddish)" and
AV- 1 4 8 , "
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
accurately displayed.
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R (red) signal error : Screen looks bluish
G (green) signal error : Screen looks reddish
B (blue) signal error : Screen looks yellowish
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Diagnosis item Display Condition Remarks
Vehicle speed ON Vehicle speed > 0 km/h (0 MPH)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal.
OFF Vehicle speed = 0 km/h (0 MPH)
– Ignition switch in ACC position
Light ON Lighting switch ON
–
OFF Lighting switch OFF
IGN ON Ignition switch ON
–
OFF Ignition switch ACC
Reverse ON Selector lever in R position
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal.
OFF Selector lever in other than R position
– Ignition switch in ACC position

NAVIGATION SYSTEMAV-119
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If vehicle speed is NG, refer to AV- 1 3 2 , "Vehicle Speed Signal Check for Display Control Unit" .

If light is NG, refer to AV- 1 3 3 , "Illumination Signal Check for Display Control Unit" .

If IGN is NG, refer to AV- 1 3 4 , "Ignition Signal Check for Display Control Unit" .

If reverse is NG, refer to AV- 1 3 4 , "Reverse Signal Check for Display Control Unit" .
NAVIGATION
1. The initial confirmation/adjustment screen will be shown, and
items “Display Diagnosis”, “Vehicle Signals”, “Navigation ”,
"Error History “ and "Delete Unit Connection Log ” will become
selective.
2. 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- 1 4 3 , "Color of RGB Image is Not Proper (Only
NAVI Screen Looks Bluish)" , AV- 1 4 4 , "Color of RGB Image is Not Proper (Only NAVI Screen Looks Red-
dish)" and AV- 1 4 5 , "Color of RGB Image is Not Proper (Only NAVI Screen Looks Yellowish)" .
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R (red) signal error : Screen looks bluish
G (green) signal error : Screen looks reddish
B (blue) signal error : Screen looks yellowish

AV-120
NAVIGATION SYSTEM
Revision: November 20092006 QX56
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 light switch (normal setting).

OFF: D (Day mode)

ON: N (Night mode)
Unless mode is in above setting, light signal (ON/OFF) may
not be accurately displayed.

If vehicle speed is NG, refer to AV- 1 3 1 , "Vehicle Speed Signal Check for NAVI Control Unit" .

If light is NG, refer to AV- 1 3 3 , "Illumination Signal Check for NAVI Control Unit" .

If IGN is NG, refer to AV- 1 3 3 , "Ignition Signal Check for NAVI Control Unit" .

If reverse is NG, refer to AV- 1 3 4 , "Reverse Signal Check for NAVI Control Unit" .
ERROR HISTORY
DIAGNOSIS BY ERROR HISTORY
The “Self-diagnosis ” results indicate whether an error occurred during the period from when the ignition switch
is turned to ON until “Self-diagnosis” is completed.
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Diagnosis item Display Condition Remarks
Vehicle speed ON Vehicle speed > 0 km/h (0 MPH)
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal.
OFF Vehicle speed = 0 km/h (0 MPH)
– Ignition switch in ACC position
Lights ON Lighting switch ON
–
OFF Lighting switch OFF
Ignition ON Ignition switch ON
–
OFF Ignition switch ACC
Reverse ON Selector lever in R position
Changes in indication may be delayed by
approx. 1.5 seconds. This is normal.
OFF Selector lever in other than R position
– Ignition switch in ACC position
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NAVIGATION SYSTEMAV-121
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If an error occurred before the ignition switch was turned to ON and does not occur again until the “Self-diag-
nosis ” is completed, the diagnosis result will be judged normal. Therefore, those errors in the past which can-
not be found by the “Self-diagnosis” must be found by diagnosing the “Error History”.
The Error History displays the time and place of the most recent occurrence of that error. However, take note
of the following points.

Correct time of the error occurrence may not be displayed when the GPS antenna substrate within the
NAVI control unit has malfunctioned.

Place of the error occurrence is represented by the position of the current-location mark at the time when
the error occurred. If the current-location mark has deviated from the correct position, then the place of
the error occurrence may be located correctly.

The maximum number of occurrences which can be stored is 50. For the 51st and later occurrences, the
displayed number remains 50.
When a reproducible malfunction occurred but its cause cannot be identified because several errors are
present, record the item, number and place (longitude/latitude) of error occurrence (or delete the Error His-
tory), then turn the ignition switch from OFF to ON to reproduce the malfunction. Check the Error History to
find the items which show an increased number of occurrences, and diagnose the item.
Error item Possible causes
Example of symptom
Action/symptom
Gyro sensor
disconnected Communications malfunction between NAVI control unit and inter-
nal gyro.

Navigation location detection performance
has deteriorated.
(Angular velocity cannot be detected.)
Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS discon-
nected Communication error between NAVI control unit and internal GPS
substrate.

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS trans-
mission cable
malfunction Malfunctioning transmission wires to NAVI control unit and internal
GPS substrate.

During self-diagnosis, GPS diagnosis is not
performed.
Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS input
line connec-
tion error Malfunctioning receiving wires to NAVI control unit and internal
GPS substrate.

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS TCX0
over
GPS TCX0
under Oscillating frequency of the GPS substrate frequency synchroniz-
ing oscillation circuit exceeded (or below) the specification

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference, or the control unit may have been subjected to exces-
sively high or low temperatures.
GPS ROM
malfunction
GPS RAM
malfunction Contents of ROM (or RAM) in GPS substrate are malfunctioning.

Location detection accuracy of the navigation
system will deteriorate, depending on the error
area in the memory, because GPS cannot
make correct positioning.
(Location correction using GPS is not per-
formed.)

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.

AV-122
NAVIGATION SYSTEM
Revision: November 20092006 QX56
NAVIGATION
1. The navigation screen will be shown, and items “Display Longi-
tude & Latitude ”, “Speed Calibration ”, “Angle Adjustment ” and
“Initialize Location ” will become selective.
2. Select each switch on “NAVIGATION” screen to display the rele- vant diagnosis screen.
GPS RTC
malfunction Clock IC in GPS substrate is malfunctioning.

Correct time may not be displayed.

After the power is turned on, the system
always takes some time until GPS positioning
becomes possible. (The GPS receiver starts
positioning without re-collecting the whole sat-
ellite information when it judged the data
stored in the receiver is correct.)

Correct time of error occurrence may not be
stored in the ″
Error History″.

Perform self-diagnosis.

When the NAVI control unit is judged normal by self-diagnosis,
the symptom may be intermittent, caused by strong radio inter-
ference.
GPS antenna
disconnected Malfunctioning connection between GPS substrate in NAVI control
unit and GPS antenna.

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When connection between NAVI control unit and GPS antenna
is judged normal by self-diagnosis, the symptom may be inter-
mittent, caused by impact or vibration.
Low voltage
of GPS The power voltage supplied to the GPS circuit board has
decreased.

Navigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)

GPS receiving status remains gray.

Perform self-diagnosis.

When connection between NAVI control unit and GPS antenna
is judged normal by self-diagnosis, the symptom may be inter-
mittent, caused by impact or vibration.
DVD-ROM
Malfunction
DVD-ROM
Read error
DVD-ROM
Response
Error Malfunctioning NAVI control unit.
-
Dedicated map DVD-ROM is in the system, but the data cannot be
read.

The map of a particular location cannot be dis-
played.

Specific guidance information cannot be dis-
played.

Map display is slow.

Guidance information display is slow.

System has been affected by vibration.

Is map DVD-ROM damaged, warped, or dirty?
–If damaged or warped, the map DVD-ROM is malfunctioning.
–If dirty, wipe the DVD-ROM clean with a soft cloth.

Perform self-diagnosis.

When NAVI control unit is judged normal by self-diagnosis, the
symptom is judged intermittent, caused by vibration.
Error item
Possible causes
Example of symptom
Action/symptom
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AV-124
NAVIGATION SYSTEM
Revision: November 20092006 QX56
CAN DIAG SUPPORT MONITOREKS00GE2
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.
5. Select “CAN DIAG SUPPORT MONITOR ”.
6. Display status of CAN communication.

If the ignition is turned on and UNKWN is shown on the screen, the value of the counter will be up.
(MAX50)

The value of the counter does not change if the ignition changes to OFF. (MAX50)

If the counter shows the value of 50 and UNKWN is shown, the value of 50 will not be changed.
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Item ContentError counter
CAN_COMM OK/NG0-50
CAN_CIRC_1 OK/UNKWN 0-50
CAN_CIRC_2 OK/UNKWN 0-50
CAN_CIRC_3 OK/UNKWN 0-50
CAN_CIRC_4 OK/UNKWN 0-50
CAN_CIRC_5 OK/UNKWN 0-50
CAN_CIRC_6 OK/UNKWN 0-50
CAN_CIRC_7 OK/UNKWN 0-50
CAN_CIRC_8 OK/UNKWN 0-50
CAN_CIRC_9 OK/UNKWN 0-50
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NAVIGATION SYSTEMAV-127
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Power Supply and Ground Circuit Check for Display Control UnitEKS00GE5
1. CHECK FUSE
Make sure the following fuses of the display 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 display control unit connector M94.
2. Check voltage between connector terminals and ground as fol- lows.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between display control unit and fuse.
3. CHECK GROUND CIRCUIT
Check continuity between the following display control unit connec-
tor terminals and ground.
OK or NG
OK >> Inspection End.
NG >> Repair or replace harness.
Terminals Power source Fuse No.
Connector Terminal
M94 1
Battery power 31
10 ACC power4
Terminals Ignition switch position
(+) (– )OFFACC ON
Connector Terminal
M94 1
Ground Battery
voltage Battery
voltage Battery
voltage
10 0VBattery
voltage Battery
voltage
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Terminals Ignition switch Continuity
Connector Terminal—
M94 3Ground OFF Yes
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AV-128
NAVIGATION SYSTEM
Revision: November 20092006 QX56
Power Supply and Ground Circuit Check for Display UnitEKS00GE6
1. CHECK POWER SUPPLY AND GROUND CIRCUIT FOR DISPLAY CONTROL UNIT
1. Check power supply and ground circuit for display control unit. Refer to AV- 1 2 7 , "
Power Supply and
Ground Circuit Check for Display Control Unit" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning part.
2. CHECK POWER SUPPLY CIRCUIT FOR DISPLAY UNIT
1. Disconnect display unit connector M93.
2. Turn ignition switch ON.
3. Check voltage between display unit harness connector M93 ter- minals 2, 3 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display control unit connector M94.
3. Check continuity between display control unit harness connector M94 terminals 2, 4 and display unit har- ness connector M93 terminals 2, 3.
4. Check continuity between display unit and ground.
OK or NG
OK >> Replace display control unit. Refer to AV- 1 6 7 , "DISPLAY CONTROL UNIT" .
NG >> Repair harness. Approx. 9V
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Terminals
Continuity
Display control unit Display unit
Connector Terminal Connector Terminal
M94 2
M93 2
Ye s
4 3
Terminals Continuity
Display unit
—
Connector Terminal
M93 2
GroundNo
3
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