1995 NISSAN ALMERA N15 Service Manual

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
Park/Neutral PositionSwitch(Cont'd)

@:
ForAustralia

@:
Except forAustralia

iii

II
~i5
~i5

ECM E
CONNECTOR
II
Effij

35 22

SEF237R
iii

CHECK INPUTSIGNAL CIRCUIT.
1. Check harness continuity between
ECM terminal
@
or
@
and terminal

@.
Continuity shouldexist.
If
OK, check harness forshort.

OK

CHECK COMPONENT
(Inhibitor switch).
Refer to"Electrical Components
Inspection" of"TROUBLE DIAGNOSES"
in AT section.

OK

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpin terminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.
INSPECTION END

EC-178 NG
NG
Check
thefollowing.
• Harness connectors

QD,@)

• Harness connectors

@,@D

• Harness connectors

@),@D

• Harness foropen or
short between ECM
and inhibitor switch

If
NG, repair harness or
connectors.
Replace inhibitorswitch.

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

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS~
EVAP Canister PurgeControl Solenoid Valve
(Cont'd)

MIl
models exceptforEurope andIsrael

EC-PGC/V-01

IGNITION SWITCH
ON or START

10A

1251
FUSE
BLOCK
(JIB)

~
Refer
toEL-POWER.
_. Detectable line
for DTC
-: Non-detectable
line forDTC

BR

IlIDl

',=@

BR

I

BR

OCIEVAP CANISTER

PURGE CONTROL
SOLENOID VALVE

'4=JlCW
P

I

~cm

a:IID
G
fmjl

I
I~
CEID

45678 WP
~

PURGE ECM
(ECCS
CONTROL
MODULE)

. (ill

Refertolast page
(Foldout page).

HEC041
EC-180

•

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

Repairharness orcon-
nectors.

NG

@

1

CHECK OUTPUT SIGNALCIRCUIT.
1. Turn ignition switch"OFF".
2. Disconnect ECMharness connector.
3. Check harness continuity between
ECM terminal
Gill
andterminal
G).
Continuity shouldexist.

If OK, check harness forshort.

SEF489Q

~io

dfu

TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
[ill

EVAP Canister PurgeControl Solenoid Valve
(Cont'd)

~io

ECM
E
CONNECTOR
II

105

II

OK

CHECK COMPONENT
(EVAP canister purgecontrol solenoid

valve).

Refer to"COMPONENT INSPECTION".

OK
NG
Replace EVAPcanister
purge control solenoid

valve.

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage or
the connection ofECM harness connec-
tor. Reconnect ECMharness connector
and retest.
INSPECTION END

MEC488B COMPONENT
INSPECTION
EVAP canister purgecontrol solenoid valve

Check airpassage continuity.

Airpassage Airpassage
Condition
.

continuity continuity
between
@
and
CID
between

@
and
@

12V direct current sup-
ply between terminals Yes No

G)
and
@

No supply NoYes

If
NG, replace solenoid valve.

EC-182

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~
EGR Valve andEVAP Canister PurgeControl
Solenoid Valve(Cont'd)
For Europe andIsrael

EC-EGRC/V-01

ECM (ECCS
CONTROL
MODULE)

em

FUSE
RefertoEL-POWER.
BLOCK
(JIB)

~

~CW

(ill)
B
B1~II(ij

@

3456 W
IN~91

BR

I

SR

dJ~
~Cffi
SR

I

BR
([) EGRVALVE
&
EVAP

CANISTER PURGE
CONTROL SOLENOID
VALVE

I4=!ICW
P

I

p

~
EGR -:
Detectable line
for DTC
-: Non-detectable
line forDTC

Refer tolast page
(Foldout page).

HEC042
EC-184

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS@K]
EGR Valve andEVAP Canister PurgeControl
Solenoid Valve(Cont'd)
GA 16DE forAustralia

EC-EGRC/V-01

IGNITION SWITCH
ON orSTART
ECM(ECCS
CONTROL
MODULE)

em
•

-: Detectable 1ine
for DTC
-: Non-detectable
line forDTC
Refer
toEL-POWER.
FUSE
BLOCK
(JIB)

~
10A

1251

BR

IITJ,@

=r='@
BR

I

BR

I!i
EGRVALVE
&

EVAP CANISTER
PURGE CONTROL
SOLENOID
II 111 VALVE

=r='

P

I

P
~
EGR

till
I
I
fij
em

3456 W
~(ffi

G
Refer
tolast page
(Foldout page).

101 102
103

107 108 109
113 114
115 104
105106
110 111
112

116
117
118

HEC074
EC-185