2003 NISSAN X-TRAIL Service Repair Manual

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Page 3969 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual NAVIGATION SYSTEM
AV-79
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Initialize Location
Description
Location data for GPS in the Center control unit is intialized in Europe by this mode. Then it is possible for
Cent

Page 3970 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AV-80
NAVIGATION SYSTEM

DIAGNOSIS BY HISTORY OF ERRORS
The “Self-diagnosis” results indicate whether an error occurred during the period from when the ignition switch
is turned to ON until “Se

AV-80
NAVIGATION SYSTEM

DIAGNOSIS BY HISTORY OF ERRORS
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.
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 “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
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 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 diagnose the item.
Error itemPossible causes
Example of symptom
Action/symptom
Gyro sensor
disconnectedCommunications 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-
nectedCommunication 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
malfunctionMalfunctioning 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 errorMalfunctioning 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
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 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.

Page 3971 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual NAVIGATION SYSTEM
AV-81
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GPS ROM
malfunction
GPS RAM
malfunctionContents of ROM (or RAM) in GPS substrate are malfunctioning.
Location detection accuracy of the navigatio

NAVIGATION SYSTEM
AV-81
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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 mal-
functioning 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.
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 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 ″History of Errors″.
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
disconnectedMalfunctioning 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 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 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
ErrorMalfunctioning 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 itemPossible causes
Example of symptom
Action/symptom

Page 3972 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AV-82
NAVIGATION SYSTEM

Power Supply and Ground Circuit Check for NAVI control unitEKS00F35
1. CHECK FUSE
Check that the following fuses of the NAVI control unit are not blown.
OK or NG
OK >> GO TO

Page 3973 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual NAVIGATION SYSTEM
AV-83
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Power Supply and Ground Circuit Check for DisplayEKS00F36
1. CHECK FUSE
Check that the following fuses of the display are not blown.
OK or NG
OK >>

Page 3974 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AV-84
NAVIGATION SYSTEM

Power Supply and Ground Circuit Check for NAVI SwitchEKS00F37
1. CHECK FUSE
Check 10A fuse [No.4, located in fuse block (J/B)].
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown

Page 3975 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual NAVIGATION SYSTEM
AV-85
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Power Supply and Ground Circuit Check for Transfer unitEKS00F38
1. CHECK FUSE
Check that the following fuses of the transfer unit are not blown.
OK

Page 3976 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual AV-86
NAVIGATION SYSTEM

Communication Line Check (Between Display and NAVI switch) EKS00F39
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
1. Check system of power supply and ground circuit display. Refer

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