Infiniti F50. Manual - part 180

NAVIGATION SYSTEM

AV-85

Speed Calibration

●

During 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.

HISTORY OF ERRORS

SKIA0365E

SKIA0366E

AV-86

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 AV
and 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 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, number and place (longitude/latitude) of error occurrence (or delete the History of
Errors), then turn 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 item

Possible causes

Example of symptom

Action/symptom

Gyro sen-
sor discon-
nected

Communications malfunction between NAVI control unit and
internal gyro

●

Navigation location detection performance has
deteriorated.
(Angular velocity cannot be detected.)

●

Perform 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 dis-
connected

Communication error between AV and NAVI control unit and
internal GPS substrate

●

Navigation location detection performance has
deteriorated.
(Location correction using GPS is not performed.)

●

GPS receiving status remains gray.

●

Perform 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 mal-
function

Malfunctioning transmission wires to AV and NAVI control unit
and internal GPS substrate

●

During self-diagnosis, GPS diagnosis is not per-
formed.

●

Perform 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 con-
nection
error

Malfunctioning receiving wires to AV and NAVI control unit and
internal GPS substrate

●

Navigation location detection performance has
deteriorated.
(Location correction using GPS is not performed.)

●

GPS receiving status remains gray.

●

Perform 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
under

Oscillating frequency of the GPS substrate frequency synchro-
nizing oscillation circuit exceeded (or below) the specification

●

Navigation location detection performance has
deteriorated.
(Location correction using GPS is not performed.)

●

GPS receiving status remains gray.

●

Perform 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.

NAVIGATION SYSTEM

AV-87

REAR VIEW CAMERA

●

Refer to

DI-174, "Confirmation/Adjustment Mode"

for details.

GPS ROM
malfunction
GPS RAM
malfunction

Contents of ROM (or RAM) in GPS substrate are malfunctioning.

●

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

●

Perform 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
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 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 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
antenna
discon-
nected

Malfunctioning 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 performed.)

●

GPS receiving status remains gray.

●

Perform 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 volt-
age 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 performed.)

●

GPS receiving status remains gray.

●

Perform 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
Error

Malfunctioning 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 dis-
played.

●

Specific guidance information cannot be displayed.

●

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 AV and NAVI control unit is judged normal by self-diag-
nosis, the symptom is judged intermittent, caused by vibration.

Error item

Possible causes

Example of symptom

Action/symptom

AV-88

NAVIGATION SYSTEM

CONSULT-II Function

EKS001LX

OPERATION PROCEDURE

With the ignition switch OFF, connect “CONSULT-II” and “CON-
SULT-ll CONVERTER” to the data link connector, and turn igni-
tion switch ON.

Touch “START(NISSAN BASED VHCL)”.

Touch “MULTIAV”.
If “MULTIAV” is not indicated, go to

GI-38, "CONSULT-II Data

Link Connector (DLC) Circuit"

Select “VERSION”, ”SELF-DIAG RESULTS” or “SIGNAL MONITOR”.

SHIA0179E

SKIA3098E

PIIA0183E

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