engine NISSAN ALMERA N15 1995 Service Manual

Referto"TROUBLE
DIAGNOSES" inHA sec-
tion.
Check thefollowing.
• Harness connectors

QD,@

• Harness connectors

@,@

• Harness foropen or
short between IACV-
AAC valve orIACV-
FICO solenoid valve
harness connector and
air conditioner relay
If NG, repair harness or
connectors.
O~L.-
__I_N_S_P_E_CT_I_O_N_E_N_D __
NG
NG
NG
INSPECTION
START
DIAGNOSTIC
PROCEDURE
Check ifair conditioner compressor
functions normally.
OK
OK
CHECK
POWER SUPPLY.
1. Turn airconditioner switch"OFF"
and stop engine.
2. Disconnect IACV-AACvalveorIACV-
FICO solenoid valveharness connec-
tor.
3. Restart engine, thenturnaircondi-
tioner switch andblower fanswitch

"ON".

4. Check voltage between terminal
(1)

and ground withCONSULTor tester.
Voltage: Batteryvoltage
SEF187R
MEC289BA
MEF634E
TROUBLE
DIAGNOSIS FORNON-DETECTABLE ITEMS
IACV-FICD SolenoidValve(Cont'd)
COMPONENT DESCRIPTION

When theairconditioner ison, the IACV-FICD solenoidvalve
supplies additional airtoadjust tothe increased load.

~n

* 1: For Europe andIsrael ~
t

* 2: Except forEurope andIsrael
GA14DE,
GA16DEforEurope an
Israel
~'IACV_FIICI~'~O~~'d~

(\ ~valve harness~
~ connector

/

GA
6DE except forEurope andIsrael

'""k,
mM,o"l \

~m

[' ~.CHECKOVERALL FUNCTION.
1. Start engine andwarm itup suffi-
{ iAcv-AAC valve(with / ciently.
IACV-FICD solenoidvalve)
harness connector MEC286BA 2.Check idlespeed.
Refer toEC-36.
If NG, adjust idlespeed.
3. Turn airconditioner switchand
blower fanswitch "ON".
4. Recheck idlespeed.
900 rpm ormore (AITin
"N"
posi-
tion)
EC-208

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS~
Torque Converter ClutchSolenoid Valve(Cont'd)
SYSTEM DESCRIPTION

Throttle position sensor Throttle
valveopening angle
Engine coolant temperature sensorEnginecoolant temperature ECM
(ECCS
control
module) Torque
converter
clutch solenoid
valve
Vehicle speedsensor Vehicle
speed

The
AfT
lock-up iscontrolled bythe ECM through
the torque converter clutchsolenoid valve.When
the ECM detects anyofthe following conditions,
the ECM switches thetorque converter clutch
solenoid valveOFFtoaccomplish lock-upDpera-
tion. While thevehicle isin conditions otherthan
below, thetorque converter clutchsolenoid valve
is always settoON, releasing thelock-up oper-
ation.
•
•
•
Throttle
position isopen .
Engine coolant temperature is60°C (140°F) or•
more.
Vehicle speedis58 kmfh (36MPH) ormore .

m ~
i3~

II
ECM
HCONNECTORII

30 115

ID
cf6~H

~i3~

II
ECM E
CONNECTOR
II

30 115

iIJ
ID
cf6~H

@> :
AIT
models forAustralia

@:
AlTmodels exceptforEurope
and Israel, andAustralia
SEF189RDIAGNOSTIC
PROCEDURE

INSPECTION START
CHECK CONTROL FUNCTION.
1. Jack updrive wheels.
2. Start engine andwarm itup suffi-
ciently.
3. Shift selector leverto"D" position.
4. Check voltage between ECMterminal

GID
or
@
and ground underthe
following conditions.

Voltage: Accelerator pedalisdepressed
[Vehicle speedisabove

58 km/h (36MPH).]

Battery voltage
Accelerator pedalisfully
released ApprOXimately OV
OK

CHECK COMPONENT
(Torque converter clutch
solenoid valve).
Refer to"Electrical Com-
ponents Inspection" in
AT section.
If NG, replace torque
converter clutchsolenoid
valve.

OK

INSPECTION END

MEC279BA NG
EC-221

TROUBLEDIAGNOSIS FORNON-DETECTABLE ITEMS
@]

Torque Converter ClutchSolenoid Valve(Cont'd)
@

@ :
AIT
models forAustralia

@:
NTmodels exceptforEurope
and Israel, andAustralia
I!J

1

CHECK POWER SUPPLY. NG
Check thefol/owing.
1. Stop engine.
--.--..

•Harness connectors
2. Disconnect torqueconverter clutch

@),
solenoid valveharness connector. •10A fuse
3. Turn ignition switch"ON".
•Harness foropen or
4. Check voltage between terminal
@

shortbetween torque
and ground. converterclutchsole-

Voltage: Batteryvoltage
noidvalve andfuse
" NG, repair harness or
OK connectors.

[;J
CHECK OUTPUT SIGNALCIRCUIT. NG
Check thefollowing.
1. Turn ignition switch"OFF".
--.--..

•Harness connectors
2. Disconnect ECMharness connector.
aD,@

3. Check harness continuity between •Harness connectors
ECM terminal
(ill)
or
@
and termi-
@,@!)

nal (D. •Harness connectors

Continuity shouldexist.
@),@D

" OK, check harness forshort. •
Harness foropen or
short between ECM
OK andtorque converter
clutch solenoid valve

If
NG, repair harness or
connectors.
CHECK COMPONENT NG
Replace torqueconverter
(Torque converter clutchsolenoid
~

clutchsolenoid valve.
valve).
Refer to"Electrical Components
Inspection" inAT section.
OK
Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpinterminals fordamage
or the connection ofECM harness con-
nector. Reconnect ECMharness con-
nector andretest.

.

INSPECTION END

SEF190R
SEF513Q
rilio
ECM
HCONNECTORII

115 30

~i5

~

II

EC-222

ENGINEANDEMISSION CONTROL OVERALLSYSTEM
Circuit Diagram

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HEC001
EC-226

ENGINEANDEMISSION CONTROLOVERALLSYSTEM
System Diagram

•

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Ol

C C

0
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Ql

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C
tl
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0
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CD

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0

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f-

SEF306R
EC-227

ENGINEANDEMISSION CONTROLOVERALLSYSTEM
ECCS Component PartsLocation
EGR valve
IACV.air regulator
EGRC-BPTvalve
Injector
IACV.AAC valve
IACV.FICD solenoidvalve
Engine coolant temperature sensor
Knock sensor Pressure
regulator
Heated oxygen
sensor Camshaft
positionsensor,
ignition coiland power
transistor builtintodistributor
EC-228
SEF307R

ENGINEANDEMISSION CONTROL OVERALLSYSTEM ~
ECCS Component PartsLocation (Cont'd)
Engine coolant temperature sensor
IACV.FICD solenoidvalve
•

IACV.air regulator
Knock sensor
SEF308R
EC-229

ENGINEANDEMISSION CONTROLOVERALLSYSTEM
ECCS Component PartsLocation (Cont'd)

Camshaft

L
position
sensor
Metal tipofignition coiltower
(Terminal ofsecondary coilcircuit)
NOTE: Powertransistor, camshaftpositionsensor,
and ignition coilhave tobe replaced asa
distributor assembly.

EC-230
Terminal
forignition coil

SEF853NA

ENGINEANDEMISSION CONTROLOVERALLSYSTEM
Vacuum HoseDrawing
Pressure regulator
VIEWA
Throttle body~

5

EGR valve
&
EVAP canister
purge control solenoid valve

(1)
Pressure regulator tovacuum
gallery

@
Airduct tovacuum gallery

@
EVAP canister (vacuum line)to
vacuum gallery

@
EVAP canister (purgeline)to
intake manifold collector /-
Vacuum gallery

A

@
Throttle bodytoEGR valve
&

EVAP canister purgecontrol
solenoid valve

@
EGR valve
&
EVAP canister
purge control solenoid valveto
vacuum gallery

(J)
EGR valve
&
EVAP canister
purge control solenoid valveto
vacuum gallery
EC-231 EGR
valve
VIEW B
EGRvalve
SEF309R
@ Intake manifold collectorto
vacuum gallery

@
EGRC-BPT valvetoEGR tube

@
EGRC-BPT valvetovacuum
gallery
@ EGR valve toEGRC-BPT valve
•

ENGINEANDEMISSION CONTROLOVERALLSYSTEM
System Chart

Camshaft positionsensor Fuel

injection
&
mixture ratio
•
I

I
control Injectors
Mass airflow sensor

I

Distributorignitionsystem

r
~1
Power transistor
Engine coolant temperature
.

sensor

I
IACV-AAC valveand
Idle aircontrol system
IACV-FICDsolenoidvalve
Heated oxygen sensor

I

IACV-airregulator control

~--..j
IACV-air regulator

I

Ignition switch

I

I
Throttle position sensor

~-+
Fuel
pump control Fuel
pump relay
ECM
(ECCS
control
Neutral position/Inhibitor
.

module) Heatedoxygen sensor
switch monitor
&
on-board diagnos-
~-+
Malfunction
indicatorlamp
tic system (On
theinstrument panel)

I
Air conditioner switch

t~

EGRvalve
&
EVAP canister

1---+
EGR
valve
&
EVAP canister
purge control purge
control solenoid valve
Knock sensor

.....

Frontheated oxygen sensor Front
heated oxygen sensor
Battery voltage
.
heater
control heater

I
.

Power steering oilpressure

~

Coolingfancontrol

--
Cooling
fanrelay
switch
Vehicle speedsensor
.....

Airconditioning cutcontrol Air
conditioner relay

EC-232