Infiniti Q45. Manual — part 170

NAVIGATION SYSTEM

AV-109

C

D

E

F

G

H

I

J

L

M

A

B

AV

DISPLAY DIAGNOSIS

●

If RGB signal is malfunctioning, the tint of the color bar display is as follows.

SKIB7628E

R (red) signal error

: Light blue (Cyan) tint

G (green) signal error

: Purple (Magenta) tint

B (blue) signal error

: Yellow tint

AV-110

NAVIGATION SYSTEM

VEHICLE SIGNALS

A comparison check can be made of each actual vehicle signal and
the signals recognized by the AV and NAVI control unit.

NOTE:
If ignition signal is NG, each vehicle signal of vehicle speed and reverse is not displayed.

SKIA1997E

Diagnosis item

Display

Condition

Remarks

Vehicle Speed

ON

When vehicle speed is more than 0 km/h (0 MPH)

Changes in indication may be delayed.
This is normal.

OFF

When vehicle speed is 0 km/h (0 MPH)

—

Ignition switch in ACC position

Lights

ON

Lighting switch is ON, and then optical sensor is
not illuminated

—

OFF

Lighting switch OFF

Lighting switch is ON, and then optical sensor is
illuminated

Ignition

ON

Ignition switch ON

—

OFF

Ignition switch ACC position

Reverse

ON

Selector lever in R position

Changes in indication may be delayed.
This is normal.

OFF

Selector lever in any position other than R position

—

Ignition switch in ACC position

NAVIGATION SYSTEM

AV-111

C

D

E

F

G

H

I

J

L

M

A

B

AV

HISTORY OF ERRORS

Diagnosis results of self-diagnosis depend on if any error occurred during the time after selecting “Self Diag-
nosis” until self-diagnosis results is displayed.
Meanwhile, when an error occurs before selecting “Self Diagnosis”, and if an error does not occur until self-
diagnosis results is displayed, a diagnosis result is judged as normal.
Consequently, a diagnosis needs to be performed with “History of Errors” for the past error that is not available
with self-diagnosis.
“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 vehicle mark at the time when the error
occurred. If the vehicle mark has deviated from the correct position, then the place of the error occurrence
may not be located correctly.

●

“History of Errors” stores error occurrences up to 50, and errors after the 51st are displayed as the 50th.

SKIA0366E

AV-112

NAVIGATION SYSTEM

Diagnosis by History of Errors

When having a difficulty on the investigation of cause due to multiple errors with a reproducible malfunction,
turn ON the ignition switch from OFF mode after making a memo of the item and number of time (or delete
“History of Errors”). Check “History of Errors” again after the malfunction was reproduced, and then perform
diagnosis focusing on the item of which number of time increased.

Error item

Possible causes

Example of symptom

Action/symptom

Gyro sensor
disconnected

Communications malfunction between AV and 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 discon-
nected

Communication error between AV and NAVI control unit and inter-
nal 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 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
malfunction

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

●

During self-diagnosis, GPS diagnosis 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 input
line connec-
tion 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 per-
formed.)

●

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 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 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 subjected
to excessively 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 may have deteriorated, depending on
the error area in the memory, because GPS
could not make correct positioning.
(Location correction using GPS 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 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

″

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.