NISSAN ALMERA N15 1995 Service Manual

@@

'1: Heated oxygen sensor(ForEurope
and Israel, andAustralia AITmod-
els) Oxygen sensor(Except forEurope
and Israel, andAustralia AITmod-
els)

Ii

1

Race engine twoorthree times under no-load, thenrunengine atidle
speed.

1

Check "CO"%.

Idle CO:Less than10%

[!J

After checking COOJo,

00
1)
Touch "BACK".

@
1)
Disconnect theresistor fromterminals ofengine coolant tem-
perature sensorh.arness connector.
2) Connect enginecoolant temperature sensorharness connector
to engine coolant temperature sensor.
NG OK
Replace oxygensensor'1.

m

00
1.
See
"M/R
FIC
MNT" in"Data monitor" mode.
2. Maintaining engineat2,000 rpmunder no-load
(engine iswarmed upsufficiently.), checkthat
the monitor fluctuates between"LEAN"and
"RICH" morethan5times during 10seconds.

1 time :RICH
->
LEAN
->
RICH
2 times: RICH
->
LEAN
-+
RICH
->
LEAN
->

RICH
OR

Ii)

@
1.
Set "Oxygen sensormonitor" indiagnostic test
.mode II.
(See page EC-47.)
2. Maintaining
engineat2,000 rpmunder no-load,
check thatthemalfunction indicatorlamponthe
instrument panelgoesONand OFF more than5
times during 10seconds.

I
NG OK

SEF913J

2000rpm
RICH

1;:(

NO FAIL
0
SEF248F

CMPS.RPM (REF)
MIR
FIC
MNT

1;:(

MONITOR
BASIC
SERVICE PROCEDURE ~
Idle Speed/Ignition TiminglldleMixtureRatio
Adjustment (Cont'd)

~\\~\\\\""1"'1///1.
@

#'
7 5~

~ ~
{2{ 6~

?1 7-=1

:;::. .;f

~o 84

xl000 rlmin

SEF987K

(gJ~
~~~~N

l~~i~V-=~
-~

Data linkconnector forCONSULT
(Connect CHKandIGNterminals
with asuitable harness.)

__
R_E_C_O_R_D __
I

SEF515Q
SEF909P EC-42

BASICSERVICE PROCEDURE []KJ
Idle Speed/Ignition Timing/IdleMixtureRatio
Adjustment (Cont'd)

@

Connect oxygensensorharness connector tooxygen
sensor.
Check fuelpressure regulator.
(See page EC-33.)

.

Check massairflow sensor anditscircuit.
(See page EC-107.)
Check injector anditscircuit.
(See page EC-141.)
Clean orreplace ifnecessary.
Check engine coolant temperature sensoranditscir-
cuit. (See page EC-112.)
Check ECMfunction* bysubstituting anotherknown
good ECM.
*.ECM maybethe caus
but this israrely thece
of aproblem,
ase.
•

EC-43

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION

\ I/

'e/'

-
CHECK-

/
.......

/ I\
Malfunction indicator
lamp SEF051PA
Malfunction
Indicatorlamp(Mil)

1. The malfunction indicatorlampwilllight upwhen theigni-
tion switch isturned ONwithout theengine running. Thisis
a bulb check.

• If
the malfunction indicatorlampdoes notlight up,refer to
EL section ("WARNING LAMPSANDCHIME") orsee

EC-223.

2. When theengine isstarted, themalfunction indicatorlamp
should gooff.

Condition Diagnostic
Diagnostic
Test Mode I TestMode II
Engine
stopped BULBCHECK SELF-DIAGNOSTIC
Ignition

~
RESULTS
switch in
"ON" posi-
tion Engine

*1
~
running
MALFUNCTION
OXYGENSENSOR

ID
WARNING
MONITOR
*1: Heated oxygen sensor(ForEurope andIsrael, andAustralia AITmodels)
Oxygen sensor(Except forEurope andIsrael, andAustralia AITmodels)

EC-44

Turnignition switch"ON".
(Do notstart engine.)

ON-BOARD
DIAGNOSTIC SYSTEMDESCRIPTION

Malfunction Indicatorlamp(Mil)(Cont'd)

HOW TOSWITCH DIAGNOSTIC TESTMODES

Diagnostic TestMode I- BULB CHECK
DiagnosticTestMode I
- MALFUNCTION WARNING
(Turn diagnostic testmode
selector onECM fullyclockwise.)
o,~yr;;~N

~-~

Data linkconnector forCONSULT
(Connect CHKandIGNterminals
with asuitable harness.)
•

Wait atleast 2seconds.
(Turn diagnostic testmode
selector fullycounterclockwise.)
O,~/~N

~-~

Data linkconnector forCONSULT
(Disconnect CHKandIGNterminals
with asuitable harness.)

DIAGNOSTIC TESTMODE II ~
Q~

- SELF-DIAGNOSTIC RESULTS ON~
S art engine. Diagnostic
TestMode II
- OXYGEN SENSOR MONITOR*1
Wait atleast 2seconds.

1
*1:
Heated oxygen sensor(ForEurope andIsrael,
and Australia AfTmodels)
Oxygen sensor(Except forEurope andtsrael,
and Australia AfTmodels)

•
Switching themodes isnot possi-
ble when theengine isrunning.
• When ignition switchisturned off
during diagnosis, powertoECM
will drop afterapprox. 5second.
The diagnosis willautomatically
return toDiagnostic TestMode I.
• Turn backdiagnostic testmode
selector tothe fully counterclock-
wise position whenever vehicleis
in use.

~~Ol
W:jr

g2g~E;V

~~~;::
or

-~

Data linkconnector forCONSULT
(Disconnect CHKandIGNterminals
with asuitable harness.)

[gJ~~~~~~

~~r

0'
~!~~:V

-~

Data linkconnector forCONSULT
(Connect CHKandIGNterminals
with asuitable harness.)

EC-45

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION @KJ

Malfunction Indicatorlamp(Mil)(Cont'd)

DIAGNOSTIC TESTMODE I-BULB CHECK

In this mode, theMALFUNCTION INDICATORLAMPonthe instrument panelshould stayON.Ifitremains
OFF, check thebulb. Refer toEL section ("WARNING LAMPSANDCHIME") orsee EC-223.

DIAGNOSTIC TESTMODE I-MALFUNCTION WARNING
MALFUNCTION INDICATORLAMP
ON
OFF Condition
Engine coolant temperature sensorcircuitmalfunction oroverheating isdetected, or
the ECM's CPUismalfunctioning.
No malfunction.

• These Diagnostic TroubleCodeNumbers areclarified inDiagnostic TestMode II(SELF-DIAGNOS-
TIC RESULTS).

DIAGNOSTIC TESTMODE II-SELF-DIAGNOSTIC RESULTS

In this mode, adiagnostic troublecodeisindicated bythe number ofblinks ofthe MALFUNCTION INDI-
CATOR LAMPasshown below.

Example: Diagnostic troublecodeNo.12and No.43

ON
0.6
03

111-'1
0.6

II
0.3
OFF
j
~

~~ -I.
--.1
-4--1--

Q9 O~ 21 OB Q9

'--------v----' '--------v------~

Diagnostic troublecodeNo.12 DiagnostictroublecodeNo.43
2.1
Unit:second
AEC490
• SELF-DIAG RESULTS.
0

FAILURE DETECTED TIME
NATS MALFUNCTION
0

I
ERASE

II
PRINT

I

SEF288Q

Long
(0.6second) blinkingindicates thenumber often digits, andshort (0.3second) blinkingindicates
the number ofsingle digits. Forexample, themalfunction indicatorlampblinks 4times forabout 2.5
seconds (0.6secx4 times) andthen itblinks threetimes forabout 1second (0.3secx3 times). This
indicates theDTC "43" andrefers tothe malfunction ofthe throttle position sensor.
In this way, allthe detected malfunctions areclassified bytheir diagnostic troublecodenumbers. The
DTC "55" refers tono malfunction. (SeeDIAGNOSTIC TROUBLECODECHART, refertoEC-62.)

HOW TOERASE DIAGNOSTIC TESTMODE II(Self-diagnostic results)

The diagnostic troublecodecanbeerased fromthebackup memory inthe ECM when thediagnostic
test mode ischanged fromDiagnostic TestMode IIto Diagnostic TestMode
I.
(Refer to"HOW TO
SWITCH DIAGNOSTIC TESTMODES" onprevious page.)

• Ifthe battery terminal isdisconnected, thediagnostic troublecodewillbelost from thebackup
memory within24hours.
• Becareful nottoerase thestored memory before
startin~
troublediagnoses.

• If
the MIL blinks or"NATS MALFUNCTION" isdisplayed on
"SELF-OIAG RESULTS"screen,perform self-diagnostic
results modewithCONSULT usingNATS program card
(NATS-E940). RefertoEL section.
• Confirm noself-diagnostic resultsofNATS isdisplayed
before touching "ERASE" in"SELF-DIAG RESULTS"mode
with CONSULT.
• When replacing ECM,initialisation ofNATS V2.0system and
registration ofall NATS V2.0ignition key10smust becar-
ried outwith CONSULT usingNATS program card(NATS-
E940).
Therefore, besure toreceive allkeys from vehicle owner.
Regarding theprocedures ofNATS initialisation andNATS
ignition key10registration, refertoCONSULT operation
manual, NATS V2.0.
EC-46

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION
[QKJ

Malfunction Indicatorlamp(Mil)(Cont'd)

DIAGNOSTIC TESTMODE II-OXYGEN SENSOR*1MONITOR

In this mode, theMALFUNCTION INDICATORLAMPdisplays thecondition ofthe fuel mixture (leanor
rich) which ismonitored bythe oxygen sensor*1.

MALFUNCTION INDICATORLAMPFuelmixture condition inthe exhaust gas
Airfuel ratio feedback controlcondition
ON Lean
OFF RichClosed
loopsystem
*2 Remains ONorOFF Anycondition
Openloopsystem
*2: Maintains conditions justbefore switching toopen loop.

To check theoxygen sensor*1 function,startengine inDiagnostic TestMode II.Then warm itup until
engine coolant temperature indicatorpointstomiddle ofgauge. •
Next runengine atabout 2,000rpmforabout 2minutes underno-load conditions. Makesurethatthe
MALFUNCTION INDICATORLAMPcomes ONmore than5times within 10seconds withengine running
at 2,000 rpmunder no-load. .

*1: Heated oxygen sensor(ForEurope andIsrael, andAustralia
AfT
models)
Oxygen sensor(Except forEurope andIsrael, andAustralia
AfT
models)

EC-47

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION

for
CONSULT

E3==/

NISSAN
CONSULT
EE940
+

I !DiI
I

START

I
SUB
MODE

I

SEF253Q
~ SELECT~S_Y_S_T_EM
I

ENGINE----~

SEFS95K
~ SELECT DIAGMODE
lill

WORK SUPPORT
I

SELF-DIAG RESULTS
I

DATA MONITOR

I
ACTIVE TEST

I
ECM PART NUMBER

I
FUNCTION TEST
SEF136PCONSULT
CONSULT INSPECTION PROCEDURE

1. Turn offignition switch.
2. Connect "CONSULT" todata linkconnector forCONSULT.
(Data linkconnector forCONSULT islocated behindthefuse
box cover.)
3. Turn onignition switch.
4. Touch "START".

+:
Program card

AE930: ForAustralia
EE940: ExceptforAustralia
5. Touch "ENGINE".
6. Perform eachdiagnostic testmode according toeach ser-
vice procedure.

For further information, seetheCONSULT OperationManual.

EC-48

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION
CONSULT (Cont'd)
ECCS COMPONENT PARTS/CONTROL SYSTEMSAPPLICATION
DIAGNOSTICTESTMODE
Item WORKSELF-DI-
ACTIVEFUNC-
DATA
SUPPORT AGNOSTIC
MONITOR TION
TEST
RESULTS TEST

Camshaft positionsensor
X
X

Mass airflow sensor
X
X

Engine coolant temperature sensor
X
X X

Oxygen sensor'1
X
X X

Vehicle speedsensor
XX

Throttle positionsensor
XX
X X

Intake airtemperature sensor.'2
X
X

INPUT
Knock
sensor'3
X

Ignition switch(startsignal)
XX

I/)
Closed
throttle position
X
X

l-

ll:
Airconditioner switch
X

<

~

Park/Neutralpositionswitch
X
X

I-

Z

UJ
Powersteering oilpressure switch
XX

z

0
Electricalloadsignal
X

~

:E

0
Batteryvoltage
X

u

I/)
Injectors
XX
X

u
u
UJ
X(Ignition
Power transistor (Ignitiontiming) X X
XX
signal)
IACV-AAC valve X
XX
X
Valve timing control solenoid valve XX

X

OUTPUT
Air
conditioner relay
X

Fuel pump relay XX
XX
Cooling fan XX
X
EVAP canister purgecontrol solenoid
XX X
valve'4
EGR valve
&
EVAP canister purgecontrol
XX

X

solenoid valve'5
X: Applicable
'1: Heated oxygen sensor(ForEurope andIsrael, andAustralia AITmodels)
Oxygen sensor(Except forEurope andIsrael, andAustralia AITmodels)
'2: For Australia
'3: Except forAustralia
'4: GA16DE
MIT
models exceptforEurope andIsrael, andAustralia
'5: For Europe andIsrael andAustralia, andGA15DE
MIT
models

EC-49
•

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION
CONSULT (Cont'd)
FUNCTION
Diagnostictestmode
Function
A technician canadjust somedevices
Work support
fasterandmore accurately byfollowing
indications onCONSULT.
Self-diagnostic results Self-diagnostic
resultscanberead and
erased quickly.
Data monitor
Input/Outputdatainthe ECM canberead.
CONSUL Tdrives someactuators apart
Active test
fromtheECM's andalso shifts some
parameters inaspecified range.
ECM partnumbers ECMpartnumbers canberead.
Conducted byCONSULT insteadofatech-
Function test
niciantodetermine whethereachsystem
is "OK" or"NG".
WORK SUPPORT MODE
WORK ITEM
CONDITION USAGE
THRTL POSSENADJ
CHECKTHETHROTTLE POSITIONSENSORSIGNAL. Whenadjusting throttleposition
ADJUST iTTO THE SPECIFIED VALUEBYROTATING
sensorinitialposition
THE SENSOR BODYUNDER THEFOLLOWiNG CONDI-
TIONS .
• IGN SW"ON"
• ENG NOTRUNNING
• ACC PEDAL NOTPRESSED
IGNITION TIMINGADJ
•IGNITION TIMINGFEEDBACK CONTROLWILLBE Whenadjusting initialignition
HELD BYTOUCHING "START".AFTERDOINGSO,
timing
ADJUST IGNITION TIMINGWITHATIMING LIGHTBY
TURNING THECAMSHAFT POSITIONSENSOR.
IACV-AAC VALVEADJ SETENGINE SPEEDATTHE SPECIFIED VALUEUNDER

-

THE FOllOWING CONDITIONS.
• ENGINE WARMED UP
• NO-LOAD
FUEL PRESSURE RELEASE •FUEL PUMP WillSTOP BYTOUCHING "START" Whenreleasing fuelpressure
DURING IDLING. fromfuelline
CRANK AFEW TIMES AFTER ENGINE STALLS.
EC-50

ON-BOARDDIAGNOSTIC SYSTEMDESCRIPTION
CONSULT (ConI'd)
SELF-DIAGNOSTIC MODE
Regarding itemsdetected in"SELF-DIAG RESULTS"mode,referto"Diagnostic TroubleCode(DTC)
Chart" (RefertoEC-62.)
DATA MONITOR MODE

Monitored item ECM
Main
[Unit] input
signals Description
Remarks
signals
CMPS.RPM •Indicates theengine speedcomputed •Accuracy becomespoorifengine
(REF) [rpm]

00
from
theREF signal (180'signal) of
speeddropsbelow theidle rpm.
the camshaft positionsensor.
•Ifthe signal isinterrupted whilethe
engine isrunning, anabnormal value
may beindicated .
MAS AIR/FL SE[V]

0 0
•
The signal voltage ofthe mass air
•When theengine isstopped, acertain
flow sensor isdisplayed .
valueisindicated.
COOLAN TEMP/S
•The engine coolant temperature •When theengine coolant temperature
['C] or['F]

00
(determined
bythe signal voltage of
sensorisopen orshort-circuited,
the engine coolant temperature sen-ECMenters fail-safe mode.The
sor) isdisplayed.
enginecoolant temperature deter-
mined bythe ECM isdisplayed .
02 SENSOR [V]

00
•
The signal voltage ofthe oxygen sen-
sor*1 isdisplayed .
M/R F/CMNT •
Display ofoxygen sensorsignaldur-
•After turning ONthe ignition switch,
[RICH/LEAN] ingair-fuel ratiofeedback control: "RICH"isdisplayed untilair-fuel mix-
RICH ...means themixture became
tureratio feedback controlbegins.

0 0
"rich",
andcontrol isbeing affected •When theair-fuel ratiofeedback is
toward aleaner mixture.
clamped,thevalue justbefore the
LEAN ...means themixture became clampingisdisplayed continuously.
"lean", andcontrol isbeing affected
toward arich mixture .
VHCL SPEED SE

00
•
The vehicle speedcomputed fromthe
[km/h] or[mph] vehicle
speedsensor signalisdis-
played .
BATTERY VOLT[V]

0 0
•
The power supply voltage ofECM is
displayed .
THRTL POSSEN[V]

0 0
•
The throttle position sensorsignal
voltage isdisplayed.
INT/A TEMP SE['C] •The intake airtemperature deter-
or ['F]*2

0
mined
bythe signal voltage ofthe
intake airtemperature sensorisindi-
cated .
START SIGNAL

00
•
Indicates [ON/OFF] conditionfromthe•After starting theengine, [OFF]isdis-
[ON/OFF] startersignal. playedregardless ofthe starter sig-
nal.
CLSD THLIPOSI •Indicates theclosed throttle position
[ON/OFF]

00
[ON/OFF]
determined bythe throttle
position sensorsignal.
ON: Closed throttle position
OFF: Other thanclosed throttle position
AIR COND SIG

00
•
Indicates [ON/OFF] conditionofthe
[ON/OFF] air
conditioner switchasdetermined
by the airconditioning signal.
PIN POSI SW

00
•
Indicates [ON/OFF] conditionfromthe
[ON/OFF] park/neutralpositionswitchsignal.
PW/ST SIGNAL •
Indicates [ON/OFF] conditionofthe
[ON/OFF]
00
power
steering oilpressure switch
determined bythe power steering oil
pressure signal.

NOTE:
Any monitored itemthatdoes notmatch thevehicle beingdiagnosed isdeleted fromthedisplay auto-
matically.

*1: Heated oxygen sensor(ForEurope andIsrael, andAustralia A/Tmodels)
Oxygen sensor(Except forEurope andIsrael, andAustralia A/Tmodels)
*2: For Australia

EC-51
•