NISSAN ALMERA N16 2003 Electronic Repair Manual

System DescriptionNJEL0555MULTIFUNCTION SWITCH SYSTEMNJEL0555S01Refer to Owner′s Manual for multifunction switch operating instruc-
tions.
Using the multifunction switch at the center of the instrument panel,
it can be operating the following systems:
Auto A/C system
Board computer
Audio system
POWER SUPPLY AND GROUNDNJEL0555S02Power is Supplied at All TimesNJEL0555S0201through 15A fuse (No. 40, located in fuse and fusible link box)
to display unit terminal 23
to audio unit terminals 3 and 4.
When Ignition Switch is in ACC or ON Position, Power
is Supplied
NJEL0555S0202through 10A fuse [No. 1, located in fuse block (J/B)]
to display unit terminal 24,
to multifunction switch terminal 6 and
to audio unit terminal 2.
When Ignition Switch is in ON or START Position,
Power is Supplied
NJEL0555S0203through 10A fuse [No. 1, located in fuse block (J/B)]
to display unit terminal 22.
Ground is SuppliedNJEL0555S0204to multifunction switch terminal 1 and
to display unit terminal 21
through body grounds M28, M67 and F118 (Gasoline engine
models).
AV COMMUNICATION LINENJEL0555S03Display unit is communicated by the following unit with communi-
cation line.
Multifunction switch
Audio unit
Auto A/C unit
Combination meter
Display unit received operation signal from multifunction switch,
and it send operation signal to audio unit, auto A/C unit or combi-
nation meter.
BOARD COMPUTERNJEL0555S04Refer to Owner′s Manual for board computer operating instruc-
tions.
Board computer is monitoring to the following five type information.
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VFD DISPLAY
System Description
EL-215

YEL827D
1. Press “INFO” switch to display vehicle information display.
2. Indication can be changed by in the following order by push-
ing multifunction switch.
Range
Journey distance
Journey time
Average fuel economy
Average vehicle speed
Board computer Display
Range (km or MILES) Displays range to empty with a range of 000.0 to 999.9.
Journey distance (km or MILES) Displays journey distance with a range of 000.0 to 9999
Journey time Displays journey time with a range of 0000:00:00 to 9999:59:59.
Average fuel consumption (/100 km or
MPG)Displays fuel consumption with a range of 00.0 to 999.
Average vehicle speed (km/h or MPH) Displays average vehicle speed with a range of 000 to 999.
RangeNJEL0555S0401The elapsed time indication provides driver with an estimation
of the distance that can be driven before refuelling.The range
is conducted by fuel tank level sensor unit (fuel remaining),
ECM pulse signal (fuel consumption) and vehicle speed signal.
Indication will be renewed every 30 seconds.
When fuel remaining is less than approx. 7.8(6-7/8 Imp qt),
indication will blink as a warning. If the fuel remaining less than
approx. 6.8(6 Imp qt), “– –.–” will be indicated. In this case,
the mode will change to the RANGE mode automatically even
though the display is showing a different item. (See NOTE.)
The range mode includes a low range warning feature: when
the fuel level is low, the range mode is automatically selected
and the digits blink in order to draw the driver′s attention. Press
the “INFO” switch if you wish to return to the mode that was
selected before the warning occurred. The range mark will
remain blinking until next refuelling. When the fuel level drops
even lower, the range display will change to “– – – –”.
Journey DistanceNJEL0555S0402Journey distance indication is conducted by vehicle speed sig-
nal.
If journey distance is reset, journey time will be reset at the
same time.
When pushing “INFO” switch more than approximately 1
second, driving distance will be reset.
Journey TimeNJEL0555S0403Journey time indication is conducted by integration of ignition
ON time.
If journey time is reset, journey distance will be reset at the
same time.
Average Fuel ConsumptionNJEL0555S0404Average fuel consumption indication is conducted by ECM
pulse signal and vehicle speed signal after system is reset.
Indication will be renewed every 30 seconds.
VFD DISPLAY
System Description (Cont’d)
EL-216

When pushing “INFO” switch more than approximately 1
second, average fuel economy will be reset.
If average fuel consumption is reset, average vehicle speed
will be reset at the same time.
After reset operation, the display shows “– –. –” until the
vehicle is driven 500 m (1,600 ft) or 30 seconds has passed.
Average Vehicle SpeedNJEL0555S0405Average vehicle speed indication is conducted by running dis-
tance and running time.
Indication will be renewed every 30 seconds.
When pushing “INFO” switch more than approximately 1
second, average speed will be reset.
If average vehicle speed is reset, average fuel consumption
will be reset at the same time.
After reset operation, the displays shows “– –.–” for 30 sec-
onds.
HOW TO CHANGE/RESET INDICATIONNJEL0555S05Indication can be changed by in following order by pushing “INFO”
switch less than approximately 1 second.
RANGE,JOURNEY DISTANCE,JOURNEY TIME,AVER-
AGE FUEL CONSUMPTION,AVERAGE VEHICLE SPEED
Continuous pushing the “INFO” switch (more than 3 second)
can reset the indication of journey distance (trip), journey time
(hour meter), average fuel consumption and average vehicle
speed.
NOTE:
After the display changes automatically, the indication can be
changed to the last mode by pushing the switch. In this case, the
cursor will blink as a warning.
Component Parts and Harness Connector and
Harness Connector Location
NJEL0556For details, refer to “ELECTRICAL UNIT LOCATION” (EL-543) and
“HARNESS LAYOUT” (EL-550).
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VFD DISPLAY
System Description (Cont’d)
EL-217

Wiring Diagram — COMM —NJEL0557
YEL736D
VFD DISPLAY
Wiring Diagram — COMM —
EL-218

YEL737D
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VFD DISPLAY
Wiring Diagram — COMM — (Cont’d)
EL-219

Terminals and Reference Value for Display UnitNJEL0558
TERMINALS
SIGNALCONDITION
VOLTAGE (+)
(–)
TERMI-
NALWIRE
COLORIGNITION
SWITCHOPERATION
4 R GroundCommunica-
tion signal
(AV-ME)ONDisplay the vehicle information
screen.
SKIA0169E
5——Shield
ground—— —
6 G GroundCommunica-
tion signal
(ME-AV)ONPerform various settings on the
vehicle information screen.
SKIA0170E
7 B/W GroundCommunica-
tion signal
(+)ON —
SKIA0175E
9 L GroundCommunica-
tion signal
(−)ON —
SKIA0176E
11 – GroundShield
ground—— —
13 L/R GroundA/C commu-
nication sig-
nal (AV-AC)ON —
SKIA0172E
14 L/W GroundA/C commu-
nication sig-
nal (AC-AV)ON —
SKIA0173E
VFD DISPLAY
Terminals and Reference Value for Display Unit
EL-220

TERMINALS
SIGNALCONDITION
VOLTAGE (+)
(–)
TERMI-
NALWIRE
COLORIGNITION
SWITCHOPERATION
15 — —Shield
ground—— —
16 L GroundA/C clock
signalON —
SKIA0174E
19 L/B GroundVehicle
speed signal
(2-pulse)ONWhen vehicle speed is approx. 20
km/h (12 MPH)
ELF1080D
21 B Ground — — — —
22 Y/G GroundIgnition sig-
nalON — —
23 Y GroundBattery
powerOFF — Battery voltage
24 P Ground ACC signal ACC — —
Terminals and Reference Value for
Multifunction Switch
NJEL0559
TERMINALS
SIGNALCONDITION
DATA (+)
(–)
TERMINALWIRE
COLORIGNITION
SWITCHOPERATION
1 B Ground Ground ON — Apporox. 0V
6 P Ground ACC ACC — Battery voltage
11 L GroundCommunication
signal (+)ON —
SKIA0175E
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VFD DISPLAY
Terminals and Reference Value for Display Unit (Cont’d)
EL-221

TERMINALS
SIGNALCONDITION
DATA (+)
(–)
TERMINALWIRE
COLORIGNITION
SWITCHOPERATION
12 B/W GroundCommunication
signal (+)ON —
SKIA0175E
13 P GroundCommunication
signal (−)ON —
SKIA0176E
14 L GroundCommunication
signal (−)ON —
SKIA0176E
15 — Ground Shield ground ON — —
16 — Ground Shield ground ON — —
Trouble DiagnosisNJEL0637SELF-DIAGNOSIS FUNCTIONNJEL0637S01DescriptionNJEL0637S0101Self-diagnosis items are as follows.
Screen of all segments check
Software version and hardware version of display unit are dis-
played on the upper zone of the screen. (This information is not
used for service. Skip this step.)
Dimming steps and levels check
Can be checked communication line between A/C auto amp.,
audio unit, multifunction switch, combination meter and display
unit, and displays the results on the upper zone of the screen.
VFD DISPLAY
Terminals and Reference Value for Multifunction Switch (Cont’d)
EL-222

YEL828D
PERFORMING SELF-DIAGNOSIS MODENJEL0637S02Operation ProceduresNJEL0637S02011. Start the engine.
2. Turn the audio system off.
3. Pressing the “MOD” switch and “CLOCK” switch together for
2 second.
4. When self-diagnosis activated, then all segment will be indi-
cated. For display unit self-diagnosis result items, refer to
“SELF-DIAGNOSIS RESULT ITEM” below.
NOTE:
If any button is not pressed for 20 seconds at each step or if the
ignition switch is turned OFF, the self-diagnosis mode is exited.
CAUTION:
If self-diagnosis cannot activate, refer to EL-231, “Self-Diag-
nosis Does Not Perform”.
Self-Diagnosis Result ItemNJEL0637S0202Display of All Segments Indicate
MKIB0213E
This mode is checking the display of all segments.
If any of the segment is not displayed, replace the display unit.
Backlight Dimming Check
When lighting switch is first or second position, display is dim-
ming. This mode is checking the dimmer position.
The backlight check where there is an automatic change of
brightness level (4 steps) every 2 seconds. At the end of the
backlight check, it is necessary to press any button to advance
to the next check.
Communication Line Circuit Check
Displays the self-diagnosis results on the upper zone of the
screen. If NG, error code “1” is displayed on upper zone of
screen digits 7, 8 and 9.
Display unit can check communication line open circuit
between display unit and communication control units.
Screen of upper zone Possible case Trouble diagnosis
Error code “1” is displayed on digit 7
MKIB0214E
The circuit between display unit and combi-
nation meter is open.Refer to EL-228, “Combination meter Cir-
cuit Check.
Error code “1” is displayed on digit 8
MKIB0223E
The circuit between display unit, multifunc-
tion switch and audio unit is/are open.Refer to EL-229, “AV Communication Line
Check”.
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VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-223

Screen of upper zone Possible case Trouble diagnosis
Error code “1” is displayed on digit 9
MKIB0224E
The circuit between display unit and A/C
auto amp. is open.Refer to EL-231, “A/C Auto Amp. Circuit
Check” .
POWER SUPPLY AND GROUND CIRCUIT CHECK FOR
DISPLAY UNIT
NJEL0637S03
1 CHECK FUSE
Check that the following fuses in display are blown.
MTBL1461
OK or NG
OK GO TO 2.
NG If fuse is blown, be sure to eliminate cause of problem before installingnew fuse. Refer
to EL-12, “POWER SUPPLY ROUTING”.
VFD DISPLAY
Trouble Diagnosis (Cont’d)
EL-224