climate control NISSAN ALMERA N16 2003 Electronic Repair Manual

Self-Diagnosis FunctionNJEL0602DESCRIPTIONNJEL0602S01Diagnosis function consists of the self-diagnosis mode performed automatically and the confirmation/
adjustment mode operated manually.
Self-diagnosis mode checks connections between all units and performs individual unit diagnosis for all
units in system. Results are displayed on LCD display.
Check/adjustment mode is used to perform trouble diagnosis that require operation and judgment by an
operator (trouble that cannot be automatically judged by the system), to check/change the set value, and
to display the error record of the navigation system.
SELF-DIAGNOSIS ITEMNJEL0602S02
Mode Diagnosis content
Self-diagnosisControl unit diagnosis (DVD-ROM drive will not be diagnosed when no
map DVD-ROM is in it.)
Performs diagnosis of connections between C/U and GPS antenna and
between C/U and all units.
Confirmation/
adjustmentDisplayColor tone and shading of the screen can be checked by the display of a
color bar and a gray scale.
Vehicle signalsThe following signals can be diagnosed: vehicle speed, parking brake,
light, IGN (IGN SW), and reverse.
History of ErrorsDisplays the navigation system-related problems that occurred in the past
and the number of their occurrence. When a trouble symptom is selected,
the time and place of the latest occurrence will be shown.
Auto Climate ControlAll A/C screen displays on LCD monitor and the A/C SW indicator lamp
are illuminated.
NavigationDisplay Longitude &
LatitudeDisplay the map. Use the joystick to adjust position. Longitude and latitude
will be displayed.
Angle adjustmentCorrects difference between actual turning angle of a vehicle and turning
angle of the car mark on the display.
Distance adjustmentCorrects difference between the current-location mark on the display and
actual position of the vehicle.
Initialize LocationLocation memorized by AV and NAVI control unit can be initialized in this
mode.
Service Service schedule can be changed in this mode.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
NAVIGATION SYSTEM
Self-Diagnosis Function
EL-457

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