Page 2798 of 3189

the color bar will change as follows.
R (red) signal error: Screen looks bluish
G (green) signal error: Screen looks yellowish
B (blue) signal error: Screen looks reddish
When the color of the screen looks unusual, EL-477, Color of
RGB Image Is Not Proper.
SKIA1406E
VEHICLE SIGNALSNJEL0604S03A comparison check can be made of each actual vehicle sig-
nal and the signals recognized by the system.
Diagnosis item Display Condition Remarks
Vehicle speedON 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
LightsON Lighting switch ON
—
OFF Lighting switch OFF
IGNON Ignition switch ON
—
OFF Ignition switch ACC or OFF
ReverseON 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
If vehicle speed is NG, EL-471, “Vehicle Speed Signal Check”.
If light is NG, EL-472, “Illumination Control Signal Check”.
If IGN is NG, EL-473, “Ignition signal Check”.
If reverse is NG, EL-474, “Reverse Signal Check”.
SKIA1616E
NAVIGATIONNJEL0604S04Display Longitude & LatitudeNJEL0604S0401Adjust the pointer with using the joystick and touch “Set”.
NAVIGATION SYSTEM
Confirmation/Adjustment Mode (Cont’d)
EL-462
Page 2799 of 3189
SKIA1617E
The longitude and latitude are displayed.
SKIA1517E
Angle AdjustmentNJEL0604S0402Adjusts turning angle output detected by the gyroscope.
SKIA0365E
Speed CalibrationNJEL0604S0403During normal driving, distance error caused by tire wear and
tire pressure change is automatically adjusted for by the auto-
matic distance correction function. This function, on the other
hand, is for immediate adjustment, in cases such as driving
with tire chain fitted on tires.
Initialize LocationNJEL0604S0404Description
Location data for GPS in the Center control unit is initialized in
Europe by this mode. Then it is possible for Center control unit
to receive GPS signals for short time.
SKIA1618E
How to perform “Initialize location” mode
1. Select “Initialize Location”, and push “ENTER”.
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NAVIGATION SYSTEM
Confirmation/Adjustment Mode (Cont’d)
EL-463
Page 2800 of 3189

SKIA1619E
2. A message “Please wait.” is displayed and then backs to
another display of “Confirmation/Adjustment” mode.
NOTE:
To continue GPS initialized operation, operate as follows back
to “Map” screen.
− Push “BACK” button twice.
− Push “MAP” button.
After above operation, GPS indicator changes to green color
within half a minute, unless improper GPS located condition.
This operation should be performed in outside field.
HISTORY OF ERRORSNJEL0604S05
SKIA1518E
DIAGNOSIS BY HISTORY OF ERRORSNJEL0604S06The “Self-diagnosis” results indicate whether an error occurred dur-
ing the period from when the ignition switch is turned to ON until
“Self-diagnosis” is completed.
If an error occurred before the ignition switch was turned to ON and
does not occur again until the “Self-diagnosis” is completed, the
diagnosis result will be judged normal. Therefore, those errors in
the past, which cannot be found by the “Self-diagnosis,” must be
found by diagnosing the “History of Errors”.
The History of Errors 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 AV and NAVI con-
trol 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 max 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, num-
ber and place (longitude/latitude) of error occurrence (or delete the
NAVIGATION SYSTEM
Confirmation/Adjustment Mode (Cont’d)
EL-464
Page 2801 of 3189

History of Errors), then turn the ignition switch from OFF to ON to
reproduce the malfunction. Check the History of Errors to find the
items which show an increased number of occurrences, and diag-
nose the item.
Error itemPossible causes
Example of symptom
Action/symptom
Gyro sensor
disconnectedCommunications malfunction between NAVI control unit and
internal gyro
Navigation location detection performance
has deteriorated.
(Angular velocity cannot be detected.) Perform the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference.
GPS discon-
nectedCommunication error between AV and NAVI control unit and
internal GPS substrateNavigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)
GPS receiving status remains gray. Perform the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference.
GPS trans-
mission cable
malfunctionMalfunctioning transmission wires to AV and NAVI control unit
and internal GPS substrate
During self-diagnosis, GPS diagnosis is not
performed. Perform the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference.
GPS input
line connec-
tion errorMalfunctioning receiving wires to AV and NAVI control unit and
internal GPS substrateNavigation location detection performance
has deteriorated.
(Location correction using GPS is not per-
formed.)
GPS receiving status remains gray. Perform the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference.
GPS TCX0
over
GPS TCX0
underOscillating 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 the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference, or the control unit may have been sub-
jected to excessively high or low temperatures.
GPS ROM
malfunction
GPS RAM
malfunctionContents of ROM (or RAM) in GPS substrate are malfunctioning.Location detection accuracy of the navigation
system will deteriorate, depending on the
failed area in the memory, because GPS
cannot make correct positioning.
(Location correction using GPS is not per-
formed.) Perform the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference.
GPS RTC
malfunctionClock 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 position-
ing becomes possible. (The GPS receiver
starts positioning without re-collecting the
whole satellite information when it judged the
data stored in the receiver is correct.)
Correct time of error occurrence may not be
stored in the “History of Errors”. Perform the self-diagnosis.
When the AV and NAVI control unit is judged normal by self-
diagnosis, the symptom may be intermittent, caused by strong
radio interference.
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NAVIGATION SYSTEM
Confirmation/Adjustment Mode (Cont’d)
EL-465
Page 2802 of 3189

Error itemPossible causes
Example of symptom
Action/symptom
GPS antenna
disconnectedMalfunctioning connection between GPS substrate in AV and
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 the self-diagnosis.
When connection between AV and NAVI control unit and GPS
antenna is judged normal by self-diagnosis, the symptom may
be intermittent, caused by impact or vibration.
Low voltage
of GPSThe 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 the self-diagnosis.
When connection between AV and NAVI control unit and GPS
antenna is judged normal by self-diagnosis, the symptom may
be intermittent, caused by impact or vibration.
DVD-ROM
Malfunction
DVD-ROM
Read error
DVD-ROM
Response
ErrorMalfunctioning AV and 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
displayed.
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 the self-diagnosis.
When AV and NAVI control unit is judged normal by self-
diagnosis, the symptom is judged intermittent, caused by
vibration.
AUTO CLIMATE CONTROLNJEL0604S07“ATC Automatic Air Conditioner” ATC-42, “Self-diagnosis Func-
tion” for the details.
SKIA1621E
SERVICENJEL0604S08To set Service schedule, change Journey distance with joy-
stick. At the same time, the marker of journey distance will be
moved.
SKIA1622E
To reset to initial distance, select “Reset” and push “ENTER”.
When the indicator of “Service Information Display” is set
green, the color of the journey distance marker will be red. And
automatically Service information screen will be displayed
when journey distance is reached on service schedule.
NAVIGATION SYSTEM
Confirmation/Adjustment Mode (Cont’d)
EL-466
Page 2805 of 3189
Check Display Unit, Multifunction Switch
Power, and Ground Circuit
=NJEL0606
1 CHECK FUSE
Check for blown fuses at display unit along with multifunction switch fuses listed below.
MTBL1518
OK or NG
OK GO TO 2.
NG Replace the fuse.
2 POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect display unit or multifunction switch connector.
2. Check voltage between as following unit and ground.
MKIB0259E
MTBL1519
OK or NG
OK GO TO 3.
NG Replace display unit or multifunction switch power circuit harness.
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NAVIGATION SYSTEM
Check Display Unit, Multifunction Switch Power, and Ground Circuit
EL-469
Page 2806 of 3189
3 GROUND CIRCUIT INSPECTION
Check continuity between display unit or multifunction switch and ground.
SKIA1409E
MTBL1520
OK or NG
OK Normal.
NG Replace ground circuit harness of display unit or multifunction switch.
NAVIGATION SYSTEM
Check Display Unit, Multifunction Switch Power, and Ground Circuit (Cont’d)
EL-470
Page 2811 of 3189
RGB Screen Is Not ShownNJEL0611
1 HARNESS CHECK
1. Turn the ignition switch OFF.
2. Disconnect AV and NAVI control unit connector and Display connector.
3. Check continuity between AV and NAVI control unit and Display.
SKIA1415E
MTBL1525
4. Check continuity between AV and NAVI control unit and ground.
MTBL1526
OK or NG
OK GO TO 2.
NG Repair harness.
Check connector housings for disconnected or loose terminals.
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NAVIGATION SYSTEM
RGB Screen Is Not Shown
EL-475