sensor NISSAN ALMERA N15 1995 Service Manual

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

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Heated Oxygen Sensor(H02S)
For Europe andIsrael

EC-H02S-01

IGNITION SWITCH
ON orSTART

10A

mJ

IN~OI

BR/Y

. I

BR/Y

I[~]I~

'=r='@

BR/Y

I

BR/Y

rn
FUSE
BLOCK
(J/B)

~
Refer
toEL-POWER.
-: Detectable line
for DTC
-: Non-detectable
line forOTC
•

HEATED
OXYGEN
SENSOR

I4=Jl I4=Jl


- OR W

OR

~
02H
F
-;

tl
I

I
I
I

I
JOINT

I
CONNECTOR-6

: @

W.~-~

mn
In

02S ECM B8 8
(Eg~iROL
...1..__
I
..J
1

MODULE)

(IT)
(ffi)(ffi)

Bjl
Illjj
@

3456 W
~

~GY ~cw

[I[I]1]I[ill]
GY
Refer
tolast page
(Foldout page).

HEC048
EC-189

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Heated Oxygen Sensor(H02S)(Cont'd)
GA16DE forAustralia (A/Tmodels)

EC-H02S-01

IGNITION SWITCH
ON or START
10A FUSE
BLOCK

rnJ
(J/B)

~

IN~OI

BR/Y
I

BR/Y

I$I~
@

BR/Y

I

BR/Y

rn
HEATEO
OXYGEN
SENSOR

~
Ibi=ll
<0

-
OR W Refer
toEL-POWER.

-: Detectable line

for DTC

-: Non-detectable

line forDTC

~II
I'ti}
@

3456 W
OR

uil5il
02H
~

;

tl
I
I

I
I

I JOINT

I
CONNECTOR-6

: CW

W.~~~

rr16il
In

02S ECM BB B
(~g~¥ROL
,_I.J
1_

MODULE)
-L

(IT)
~

~cw

IIITIIII[ll!]
GY
Refer
tolast page

(Foldout page).

101 102103
107 108109
113 114115 104
105
106
110 111112
116
117
118

EC-190
HEeDBD

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

Heated Oxygen Sensor(H02S)(Cont'd)

@

Loosen andretighten engineground
screws.

OK

CHECK COMPONENT
(Heated oxygensensorheater).
Refer to"COMPONENT INSPECTION"
below.

OK

Disconnect andreconnect harnesscon-
ne~tors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
Troubleisnot fixed.
Replace heatedoxygen sensor.

COMPONENT INSPECTION NG

Replace heatedoxygen
sensor.

•

DISCONNECT
I~J

00
SEF586Q
Heated
oxygen sensorheater

Check resistance betweenterminals
@
and
CD.

Resistance: 2.3-4.3Q at25°C (77°F)

Check continuity betweenterminals @and
CD,
@
and @.

Continuity shouldnotexist.

If NG, replace theheated oxygen sensor.
CAUTION:

• Discard anyoxygen sensorwhichhasbeen dropped from
a height ofmore than0.5m(19.7 in)onto ahard surface
such asaconcrete floor;useanew one.

EC-193

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Oxygen Sensor(02S)
Except forEurope andIsrael

02S

~
w
ECM
(ECCS
CONTROL
MODULE)

em
EC-02S-01

_. Detectable line

for
DTC

-: Non-detectable

line for
DTC

rn
JOINT

CONNECTOR-6

@

1

(-

~,------
....
1
1

I

I

I

1
1

I
I
I

1
1

I

1

I
I
1

I
I
I
I
I

I

I

I
I
1

I

I

- _I

-
-)

~@

rn:II.ITIIillJ
GY
w

rn
OXYGEN
SENSOR

@
n

8 8 8

i.J
1

m m

EC-194 HEC049

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Oxygen Sensor(02S)(Coni'd)
GA16DE forAustralia
(M/T
models)
EC-02S-01

ECM
-:

Detectable
line
(ECCS for
OTC
CONTROL
-:

Non-detectable
MODULE) line
forOTC
02S

•

1~61

w

-
~

~-

1 1

I I

I
I

1 1
1
I

1 1

I
I

1
I

1
I

I

I
I

I
I

1
1
rn
1

I
JOINT

I
CONNECTOR-6

1
@

I

1
1

1
1

I

I

1
I

1
I

I
I
1-
_I

r
)

~

-

w
n

m
BB B

OXYGEN
~...J

1

SENSOR

~
-!-

(F13)
(F14)

-

~cw
ITIIIITill.IIJ
GY

101 102 103
107 10B 109
113 114 115 104
105
106
110 111112
116
117
llB

HEC081
EC-195

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

•

Repair
harness orcon-
nectors.

NG
OK

Loosen andretighten engineground
screws. CHECK
INPUTSIGNAL CIRCUIT.
1. Stop engine.
2. Disconnect ECMharness connector
and oxygen sensorharness connec-
tor.
3. Check harness continuity between
ECM terminal
@
or
@
and terminal

CD.

Continuity shouldexist.

If OK, check harness forshort.

~iV
@

TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
Oxygen Sensor(02S)(Conl'd)
@

~Io

ECM
19'
CONNECTOR
II

46 19

II

OK

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.

@:
ForAustralia M/Tmodels

@:
Except forEurope andIsrael
SEF182R
Trouble
isnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
Troubleisnot fixed.
Replace oxygensensor.

CAUTION:
• Discard anyoxygen sensorwhichhasbeen dropped from
a height ofmore than0.5m(19.7 in)onto ahard surface
such asaconcrete floor;useanew one.
EC-197