1995 NISSAN ALMERA N15 stop start

•

Check
thefollowing.
• 10A fuse
• 30A fusible link
• Harness foropen or
short between cooling
fan relay-1 andfuse
• Harness foropen or
short between cooling
fan relay-1 andbattery
If NG, repair harness or
connectors.

OK
PROCEDURE
A

INSPECTION START
CHECK POWER SUPPLY. NG
1. Stop engine.
2. Disconnect coolingfanrelay-1.
3. Turn ignition switch"ON".
4. Check voltage between terminals
G),

@
and ground.

Voltage: Batteryvoltage
SEF193R
TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
Cooling FanControl (Cont'd)
DIAGNOSTIC PROCEDURE
MEC342B
CHECKGROUND CIRCUIT.
1. Turn ignition switch"OFF".
2. Disconnect coolingfanmotor-1 har-
ness connector andcooling fan
motor-2 harness connector.

I!l
3.Check harness continuity
between terminal
CD
and termi-
nal
@.
Continuity shouldexist.

If OK, check harness forshort.

Ii
4.Check harness continuity
between terminal
@
and body
ground orterminal
@
and body
ground.

Continuity shouldexist.

If OK, check harness forshort.

OK

@
NG

Repair harness orcon-
nectors.

EC-163

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Cooling FanControl (Cont'd)

•

PROCEDURE
B

INSPECTION START

1:1
CHECK POWER SUPPLY. NG
Check thefollowing.

----..

1. Stop engine. •Harness foropen or
2. Disconnect coolingfanrelay-2. short
between cooling
3. Turn ignition switch"ON". fan
relay-2 andfuse
4. Check voltage between terminals
G),
•
Harness foropen or

@
and ground. short
between cooling

Voltage: Batteryvoltage
fan
relay-2 andfusible

.
OK link

If
NG, repair harness or
connectors.
CHECK GROUND CIRCUIT. NG
Repair harness orcon-
1. Turn ignition switch"OFF".
----..

nectors.
2. Disconnect coolingfanmotor-1 har-
ness connector andcooling fan
motor-2 harness connector.

o
3.Check harness continuity
between terminal
@
and termi-
nal
@.

Continuity shouldexist.

If OK, check harness forshort.

II
4.Check harness continuity
between terminal
@
and termi-
nal
@,
terminal
(!)
and body
ground.

Continuity shouldexist.

If OK, check harness forshort.
OK

II
CHECK OUTPUT SIGNALCIRCUIT. NG
Check thefollowing.
1. Disconnect ECMharness connector.
----..

•Harness connectors
2. Check harness continuity between
@,@

ECM terminal
@
or
@l
and terminal •
Harness connectors

@.
@,@D

Continuity shouldexist.
•
Harness foropen or
If OK, check harness forshort. short
between ECM
OK and
cooling fanrelay-2

If
NG, repair harness or
connectors.

MEC346B

o

•
ACTIVE TEST.
COOLING FAN
OFF

COOLAN TEMP/S 88°C

=
= =
MONITOR
== =

1:1
~i5
~3
7 5

2 1

EC-165

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
EVAP Canister PurgeControl Solenoid Valve
GA16DE MITmodels exceptforEurope, Israeland
Australia
SYSTEM DESCRIPTION

Camshaft positionsensor
Engine coolant temperature sensor
Mass airflow sensor
Throttle positionsensor
Ignition switch
Vehicle speedsensor Engine
speed
Engine coolant temperature
Amount ofintake air
Throttle position
Start signal
Vehicle speed ECM
(ECCS
control
module) EVAP
canister
purge control
solenoid valve

•

This system cutsandcontrols theport vacuum
applied tothe EVAP canister purgecontrol sole-
noid valve tosuit engine operating conditions.
This cut-and-control operationisaccomplished
through theECM. When theECM detects anyof
the following conditions, currentflowsthrough
the solenoid valveinthe EVAP canister purge
control solenoid valvecontrol vacuum line. This
causes theport vacuum tobe discharged
into theatmosphere sothat theEVAP canister
purge lineremains closed.
• Engine starting
• Closed throttle position
• Low andhigh engine coolant temperature
• During deceleration
• Engine stopped
• Vehicle speed:below10km/h (6MPH)
• Mass airflow sensor malfunction

W>
Vacuum
signal
SEF240PG COMPONENT
DESCRIPTION

The EVAP canister purgecontrol solenoid valveresponds to
signals fromtheECM. When theECM sends anON (ground)
signal, thecoil inthe solenoid valveisenergized. Aplunger will
then move tocut the vacuum signal(fromtheintake manifc,ld
to the EVAP canister purgecontrol solenoid valve).
When theECM sends anOFF signal, thevacuum signalpasses
through thesolenoid valve.Thesignal thenreaches theEVAP
canister purgecontrol solenoid valve.

EC-179

•

INSPECTION
START

m
CHECK VACUUM SOURCETOEVAP OK
CHECK COMPONENT
CANISTER.
L---.

(EVAPcanister).
1. Jack updrive wheels. (See
page EC-29.)
2. Start engine andwarm itup suffi- If
NG, replace EVAPcan-
ciently. ister.
3. Perform diagnostic testmode II(Self-
diagnostic results).Makesurethat
9iagnostic troublecodeNo.55isdis-
played.
4. Disconnect vacuumhosetoEVAP
canister.
5. Set shift lever to1st position.
6. Make surethatvacuum existsunder
the following conditions.

At Idle:
Vacuum shouldnotexist.
Racing enginefromIdleto3,000 rpm:
Vacuum shouldexist.

NG

Ii)
[!J

CHECK CONTROL FUNCTION. OK
Check vacuum hosefor
1. Check voltage between ECMterminal
--..

clogging, cracksor

@
andground withCONSULTor improperconnection.
tester underthefollowing conditions.

Voltage: At idle
Approximately OV
Engine speedisabout 2,000rpm
Battery voltage

NG

I!l
CHECK POWER SUPPLY. NG
Check thefollowing.
1. Stop engine.
I-----.

•Harness connectors
2. Disconnect EVAPcanister purgecon-
QD,@

trol solenoid valveharness connector. •10A fuse
3. Turn ignition switch"ON". •
Harness foropen or
4. Check voltage between terminal
@
short
between EVAP
and ground withCONSULTor tester. canister
purgecontrol

Voltage: Batteryvoltage
solenoid
valveandfuse

r
K If
NG, repair harness or
connectors.

SEF816F
SEF488Q
MEC325B
MEC296BB
Clogging TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
[ill

EVAP Canister PurgeControl Solenoid Valve
(Cont'd)
DIAGNOSTIC PROCEDURE
~i5
ECM
B
CONNECTOR
II
'f
~VV1

~ Crack

~i5
~

=:5---

~ Improperconnection

@
EC-181

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
EGR Valve andEVAP Canister PurgeControl
Solenoid Valve
For Europe, IsraelandAustralia, andGA15DE MIT
models
SYSTEM DESCRIPTION

Camshaft positionsensor
Engine coolant temperature sensor
Mass airflow sensor
Throttle position sensor
Ignition switch
Vehicle speedsensor Engine
speed
Engine coolant temperature
Amount ofintake air
Throttle position
Start signal
Vehicle speed ECM
(ECCS
control module) EGR
valve
&

EVAP canister
purge control
solenoid valve

•

This system cutsandcontrols theport vacuum
applied tothe EGR valve andEVAP canister
purge control solenoid valvetosuit engine oper-
ating conditions.
This cut-and-control operationisaccomplished
through theECM. When theECM detects anyof
the following conditions, currentflowsthrough
the solenoid valveinthe EGR valve andEVAP
canister purgecontrol solenoid valvecontrol vac-
uum line. This
causes theport vacuum tobe discharged
into theatmosphere sothat theEGR valve and
EVAP canister purgelineremains closed.
• Engine starting
• Closed throttle position
• Low andhigh engine coolant temperature
• During deceleration
• Engine stopped
• Vehicle speed:below10km/h (6MPH)
• Mass airflow sensor malfunction

SEF783K

l#
Intake
manifold
vacuum signal
SEF240PF COMPONENT
DESCRIPTION
Exhaust gasrecirculation (EGR)valve

The EGR valve controls theamount ofexhaust gasrouted tothe
intake manifold. Vacuumisapplied tothe EGR valve in
response tothrottle valveopening. Thevacuum controls the
movement ofataper valve connected tothe vacuum diaphragm
in the EGR valve.

EGR valve andEVAP canister purgecontrol solenoid
valve

The EGR valve andEVAP canister purgecontrol solenoid valve
responds tosignals fromtheECM. When theECM sends anON
(ground) signal,thecoil inthe solenoid valveisenergized. A
plunger willthen move tocut the vacuum signal(fromthethrot-
tle body tothe EGR valve andEVAP canister purgevalve).
When theECM sends anOFF signal, thevacuum signalpasses
through thesolenoid valve.Thesignal thenreaches theEGR
valve andEVAP canister.

EC-183

2:
1

:>
Q)

Ol

~

0
>

::;
c.

::;

0
,,"--

0
-

Rich- Idealratio _
Lean
Mixlure ratio
SEF288D
•

Zirconia
tube SEF406H
TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
Heated Oxygen Sensor(H02S)(Cont'd)

The heated oxygen sensorisplaced intotheexhaust manifold.
It detects theamount ofoxygen inthe exhaust gascompared
to the outside air.The heated oxygen sensorhasaclosed-end
tube made ofceramic zirconia. Thezirconia generates voltage
from approximately 1Vinricher conditions to
av
inleaner con-
ditions. Theheated oxygen sensorsignalissent tothe ECM.
The ECM adjusts theinjection pulseduration toachieve the
ideal air-fuel ratio.Theideal air-fuel ratiooccurs neartherad-
ical change from1Vto
av.

L
Healerpad
Isolalion
bearing

m
•MIXTURE RATIOTEST.
ACCELERATE TO2000
RPM AND HOLD THEN
TOUCH START

I£J

1800
20002200

~J

NEXT

II
START

SEF815L

m
*
MONITOR
*

NO FAIL

D

CMPS.RPM (REF)2000rpm
MIR FICMNT RICH
DIAGNOSTIC
PROCEDURE
RECORD
\ I/

........ e",/

- CHECK-

",/
........

/ I\
I

SEF522Q
INSPECTION
START
CHECK OXYGEN SENSORCIRCUIT.
1) Start engine andwarm itup suffi-
ciently.

(F.i\
2)Perform "MIXTURE RATIO
~ TEST"in"FUNCTION TEST"
mode withCONSULT.

OR

(F.i\
2)Make surethat"M/R
FIC

~ MNT"in"DATA MONITOR"
mode indicates "RICH"and
"LEAN" periodically more
than 5times during 10 sec-
onds at2,000 rpm.

OR

fti>\
2)Stop engine andsetECM
~ Diagnostic TestMode
/I

(Heated oxygensensormoni-
tor).
3) Restart engineandrunitat
about 2,000rpmforabout 2
minutes underno-load.
4) Keep engine speedat2,000
rpm andmake surethatthe
malfunction indicatorlampon
the instrument panelgoeson
and offmore than5times dur-
ing 10seconds.

NG

@
OK

INSPECTION END

Malfunction indicator
lamp SEF051PA
EC-191

I;)
1

CHECK INPUTSIGNAL CIRCUIT. NG
Repair harness orcon-
1. Stop engine.
--.

nectors.
2. Disconnect ECMharness connector
and heated oxygen sensorharness
connector.
3. Check harness continuity between
ECM terminal
@
or
@
and terminal

@.

Continuity shouldexist.
If OK, check harness forshort.

1
0K
CHECK HEATED OXYGEN SENSOR OK
Goto"CHECK
HEATER CIRCUIT.
--.

COMPONENT".
1. Reconnect harnessconnectors.
2. Start engine.
3. Check voltage between ECMterminal

@
(ForEurope andIsrael) or
@

(For Australia AfTmodels) and
ground withCONSULTor tester
under thefollowing conditions.
Voltage:
Engine speedisbelow 3,200rpm
Approximately OV
Engine speedisabove 3,200rpm
Battery voltage
NG

[!J

CHECK POWER SUPPLY. NG
Check thefollowing.
1. Stop engine.
~

•Harness connectors
2. Disconnect heatedoxygen sensor

aD,@

harness connector. •10A fuse
3. Turn ignition switch"ON".
•Harness foropen or
4. Check voltage between terminal
@
shortbetween heated
and ground. oxygensensorand
Voltage: Batteryvoltage fuse
If NG, repair harness or
OK connectors.
CHECK OUTPUT SIGNALCIRCUIT. NG
Repair harness orcon-
1. Turn ignition switch"OFF".
-----...

nectors.
2. Disconnect ECMharness connector.
3, Check harness continuity between
terminal
G)
and ECM terminal
@

(For Europe andIsrael) orGill (For
Australia
AfT
models) .
Continuity shouldexist.
If OK, check harness forshort.

t
OK

SEF180R
SEF646P
SEF181R

~i5

cilltD

@:
ForAustralia NTmodels

@:
ForEurope andIsrael

TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
Heated Oxygen Sensor(H02S) (Cont'd)
@
~
~

I;) ~i5

Il
ECM
'QcoNNECTORII

46 19

For Europe andIsrael, andGA15DE.L.J
engine models
Engineground
@,
@

----- \
~ ~
'1

\
.~

,~\ C/

Power steering",
fluid reservoir __\ ~

W~
:'C"",,

EC-192

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Oxygen Sensor(02S)(Cont'd)

The 028 isplaced intotheexhaust manifold. Itdetects the
amount ofoxygen inthe exhaust gascompared tothe outside
air. The sensor hasaclosed-end tubemade ofceramic zirco-
nia. The zirconia generates voltagefromapproximately 1Vin
richer conditions toOV inleaner conditions. Thesensor signal
is sent tothe ECM. TheECM adjusts theinjection pulsedura-
tion toachieve theideal air-fuel ratio.Theideal air-fuel ratio
occurs neartheradical change from1VtoOV.

r

Connector
Isolation bushing
Contact plate
Oxygen
sensor
Louver
Zirconia tube
Holder AEC854

,'--

~

:>
Q)

OJ

.!!1

~ '5
0-

'5

o

o

Rich --- Idealratio
Mixture ratio_
Lean
SEF288D

m
•MIXTURE RATIOTEST.
ACCELERATE TO2CXXJ
RPM AND HOLD THEN
TOUCH START
~
1800 2CXXJ2200

~J

NEXT

II
START

SEF815L

m
1;{MONITOR 1;{NO FAIL
D
CMPS.RPM (REF)
2000rpm
MIR FICMNT RICH
RECORD \ I/

'~/'

- CHECK-

/
"-

I
I\
I

SEF522Q DIAGNOSTIC
PROCEDURE
INSPECTION START
CHECK OXYGEN SENSORCIRCUIT.
1. Start engine andwarm itup suffi-
ciently.

(F.i\
2.Perform "MIXTURE RATIO
~ TEST"in"FUNCTION TEST"
mode withCONSULT.

OR

(F.i\
2.Make surethat"M/R FIC

\..!!J
MNT"in"DATA MONITOR"
mode indicates "RICH"and
"LEAN" periodically more
than 5times during 10sec-
onds at2,000 rpm.

OR

~ 2.Stop engine and'set ECM
~ Diagnostic TestMode II(Oxy-
gen sensor monitor).
3. Restart engineandrunitat
about 2,000rpmforabout 2
minutes underno-load.
4. Keep engine speedat2,000
rpm andmake surethatthe
malfunction indicatorlampon
the instrument panelgoeson
and offmore than5times dur-
ing 10seconds.
NG

@
OK
INSPECTION END
Malfunction indicator
lamp SEF051PA
EC-196