1995 NISSAN ALMERA N15 fuel

FUELSYSTEM

WARNING:
When replacing fuellineparts, besure toobserve thefollowing:
• Put a"CAUTION: INFLAMMABLE" signinworkshop.
• Donot smoke whileservicing fuelsystem. Keepopenflames andsparks awayfromwork area.
• Besure todisconnect batterygroundcablebefore conducting operations.
• Besure tofurnish workshop withaCO
2
fireextinguisher.
• Put drained fuelinan explosion-proof containerandputlidon securely.
CAUTION:
• For ECCS engine models, releasefuelpressure fromfuelline. Refer toEC section ("FuelPressure
Release", "BASICSERVICE PROCEDURE").
• Donot disconnect anyfuel lineunless absolutely necessary.
• Plug hose andpipe openings toprevent entryofdust ordirt.
• Always replace O-ringandclamps withnewones.
• Donot kink ortwist hose andtube when theyareinstalled.
• Donot tighten hoseclamps excessively toavoid damaging hoses. •
• When installing fuelcheck valve, becareful ofits designated direction.RefertoEC section ("FUEL
CHECK VALVE", "EVAPORATIVE EMISSIONSYSTEM").
• After installation, runengine andcheck forfuel leaks atconnections.

SFE414A

CD
engine models

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28•35 (2.8 -3.6, 20•26)

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28-35

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GA

&
SR engine models
SEC. 172 ~
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(0.20•0.26,

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N. m (kg-m, It-Ib)

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N'm (kg-m, in-Ib)

CD
Fuelgauge
@ Chamber @
Fuelpump
@

Fueltank

FE-3

Connector
/

SFE145A

t2Front
SFE366AFUEL
SYSTEM
Fuel Pump andGauge
REMOVAL
1. Release fuelpressure fromfuelline.
Refer toEC section ("FuelPressure Release", "BASICSER-
VICE PROCEDURE").
2. Remove inspection holecover located undertherear seat.
3. Disconnect fueloutlet, returntubeandconnectors.
4. Remove thesixscrews.
5. Remove fuelgauge assembly anddisconnect tubesand
connector.
6. Remove fuelpump withfueltank chamber asshown inthe
figure.
a. Pull upthe front offuel pump.
b. Slide itforward.

Fuel pump harness
Fuel pump

SFE366A
7.
Remove fueltank chamber fromfuelpump.

INSTALLATION

To install, reverse theremoval procedure.

CAUTION:
• Tighten tospecified torque.
• Install fuelpump harness onthe leftside ofthe feed hose
as shown inthe figure.
FE-4

ENGINECONTROL SYSTEM
SECTION
EC
CONTENTS
•

PRECAUTIONS ANDPREPARATION
4

Special Service Tools 4
Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System) 7
Supplemental RestraintSystem(SRS)"AIR
BAG" (Single AirBag System) 7
GA,SR
PRECAUTIONS ANDPREPARATION
8

Engine Fuel
&
Emission ControlSystem 8
Precautions forECCS Trouble Diagnosis of
Engine 9
Precautions 9
ENGINE ANDEMISSION CONTROLOVERALL
SYSTEM 11
Circuit Diagram -Except forAustralia 11
Circuit Diagram -For Australia 12
System Diagram -GA 14DE, GA16DE for
Europe andIsrael 13
System Diagram -GA15DE 14
System Diagram -GA 16DE except for
Europe, IsraelandAustralia 15
System Diagram -GA 16DE forAustralia 16
ECCS Component PartsLocation -GA 14DE,
GA 16DE forEurope andIsrael 17
ECCS Component PartsLocation -GA15DE 18
ECCS Component PartsLocation -GA 16DE
except forEurope, IsraelandAustralia 19
ECCS Component PartsLocation -GA 16DE
for Austral ia 20
ECCS Component PartsLocation 21
Vacuum HoseDrawing 22

c=
~

GA
ENGINE
ANDEMISSION BASICCONTROL
SYSTEM DESCRiPTION 23
System Chart.. 23
Multiport FuelInjection (MFI)System 24
Distributor Ignition(01)System 27
Air Conditioning CutControl 28
Fuel CutControl (atnoload &high engine
speed) 28
EVAPORATIVE EMISSIONSYSTEM
29

Inspection 29
POSITIVE CRANKCASE VENTILATION 31
Description 31
Inspection 32
BASIC SERVICE PROCEDURE 33
Fuel Pressure Release 33
Fuel Pressure Check 33
Fuel Pressure Regulator Check 33
Injector Removal andInstallation 34
Idle Speed/lgnition Timing/ldleMixtureRatio
Adjustment ,35
ON-BOARD DIAGNOSTIC SYSTEMDESCRIPTION .44
Malfunction IndicatorLamp(MIL) 44
CONSULT .48
TROUBLE DIAGNOSIS -General Description
58

Introduction 58
Work Flow 59
Description forWork Flow 60
Diagnostic Worksheet 61
Diagnostic TroubleCode(DTC) Chart 62
Fail-Safe Chart 64
Basic Inspection 65
Fast IdleCam (FIC) Inspection and
Adjustment -For Europe andIsrael 68
Fast IdleCam (FIC) Inspection and
Adjustment -Except forEurope andIsrael. 68
Symptom MatrixChart 71

CONTENTS(Cont'd.)

CONSULT Reference ValueinData Monitor
Mode 74
Major Sensor Reference GraphinData
Monitor Mode 76
ECM Terminals andReference Value 78

TROUBLE DIAGNOSIS FORPOWER SUPPLY 88

Main Power Supply andGround Circuit.. 88

TROUBLE DIAGNOSIS FORDTC11 94

Camshaft PositionSensor(CMPS) 94

TROUBLE DIAGNOSIS FORDTC
12 101
Mass AirFlow Sensor (MAFS) 101

TROUBLE DIAGNOSIS FORDTC
13 108
Engine Coolant Temperature Sensor(ECTS) 108

TROUBLE DIAGNOSIS FORDTC
21 113
Ignition Signal 113

TROUBLE DIAGNOSIS FORDTC
34 119
Knock Sensor (KS) 119

TROUBLE DIAGNOSIS FORDTC
41 124
Intake AirTemperature Sensor(IATS) 124

TROUBLE DIAGNOSIS FORNON-DETECTABLE
ITEMS , '"
.128
Throttle Position Sensor 128
Vehicle SpeedSensor (VSS) 133
Start Signal 138
Injector 141
Fuel Pump 145
Idle AirControl Valve(IACV) -Auxiliary Air
Control (AAC)Valve 150
Cooling FanControl 156
Power Steering OilPressure Switch 169
Park/Neutral PositionSwitch 173
EVAP Canister PurgeControl Solenoid Valve179
EGR Valve andEVAP Canister PurgeControl
Solenoid Valve 183
Heated Oxygen Sensor(H02S) 189
Oxygen Sensor(02S) 194
Valve Timing Control (VTC) 198
IACV-FICD SolenoidValve 204
Electrical LoadSignal 211
Torque Converter ClutchSolenoid Valve 219
MIL
&
Data LinkConnectors 223

SR
ENGINE ANDEMISSION CONTROL OVERALL
SYSTE M
226
Circuit Diagram 226
System Diagram 227
ECCS Component PartsLocation 228
Vacuum HoseDrawing 231
System Chart... 232
ENGINE
ANDEMISSION BASICCONTROL
SYSTEM DESCRiPTION
233
Multipart FuelInjection (MFI)System 233
Distributor Ignition
(01)
System 235
Air Conditioning CutControl 236
Fuel CutControl (atnoload
&
high engine
speed) 237

EVAPORATIVE EMISSIONSYSTEM
238
Description 238
Inspection 238

POSITIVE CRANKCASE VENTILATION
240
Description 240
Inspection 240

BASIC SERVICE
PROCEDURE 241
Fuel Pressure Release 241
Fuel Pressure Check 241
Fuel Pressure Regulator Check 242
Injector Removal andInstallation 242
Idle Speed/Ignition Timing/IdleMixtureRatio
Adjustment 243

ON-BOARD DIAGNOSTIC SYSTEMDESCRIPTION ..250

Malfunction IndicatorLamp(MIL) 250
CONSULT 254

TROUBLE DIAGNOSIS -General Description
264
Introduction 264
Work Flow 265
Description forWork Flow 266
Diagnostic Worksheet 267
Diagnostic TroubleCode(DTC) Chart 268
Fail-Safe Chart 270
Basic Inspection 271
Symptom MatrixChart. 274
CONSULT Reference ValueinData Monitor
Mode 277
Major Sensor Reference GraphinData
Monitor Mode 279
ECM"Terminals andReference Value 281

TROUBLE DIAGNOSIS FORPOWER SUPPLY
286
Main Power Supply andGround Circuit.. 286

TROUBLE DIAGNOSIS FORDTC
11 289
Camshaft PositionSensor(CMPS) 289

TROUBLE DIAGNOSIS FORDTC
12 293
Mass AirFlow Sensor (MAFS) 293

TROUBLE DIAGNOSIS FORDTC
13 297
Engine Coolant Temperature Sensor(ECTS) 297

TROUBLE DIAGNOSIS FORDTC
21 301
Ignition Signal 301

TROUBLE DIAGNOSIS FORDTC
34 306
Knock Sensor (KS) 306

CONTENTS(Cont'd.)
TROUBLE DIAGNOSIS FORDTC
43 309
Throttle Position Sensor 309

TROUBLE DIAGNOSIS FORNON-DETECTABLE
ITEMS
314
Vehicle SpeedSensor (VSS) 314
Start Signal 317
Exhaust GasRecirculation (EGR)Valveand
EVAP Canister PurgeControl 319
Injector 324
Fuel Pump 327
Idle AirControl Valve(IACV)-Air Regulator 332
Idle AirControl Valve(IACV) -Auxiliary Air
Control (AAC)Valve :335
Idle AirControl Valve(IACV)-FICD Solenoid
Valve '"339
Cooling FanControl 343
Power Steering OilPressure Switch 354
Park/Neutral PositionSwitch 357
Heated Oxygen Sensor(H02S) 362
Torque
Converter
ClutchSolenoid Valve 367
Malfunction IndicatorLamp(MIL)
&
Data Link
Connector (DLC)forCONSULT 370

CD
INJECTION SYSTEM
371

VE.TYPE INJECTION PUMP
372
Removal 372
Installation 373
Adjustment 374

INJECTION NOZZLE
376
Removal andInstallation 376
Disassembly 376
Inspection 377
Cleaning 377
Assembly 378
Test andAdjustment 379
FUEL
SYSTEM CHECK
381
Priming PumpCheck 381
Fuel CutSolenoid Valve 381

CRANKCASE VENTILATION SYSTEM
382
Ventilation Hose 382

ENGINE ANDEMISSION CONTROLOVERALL
SYSTEM
383
Component PartsLocation 383
System Diagram 384
Circuit Diagram ,385
System Chart. 386

TROUBLE DIAGNOSES
387
ECM Terminals andReference Values 387
Quick-glow System 390
Partial LoadAdvance (PLA)Control 399
Cooling FanControl 404
Air Conditioner CutControl 413
Fuel CutControl 416

GA

SERVICE DATAANDSPECIFICATIONS
(505).417
General Specifications 417
Inspection andAdjustment.. 417

SR
SERVICE DATAANDSPECIFICATIONS
(505).418
General Specifications 418
Inspection andAdjustment.. .418

CD
SERVICE DATAANDSPECIFICATIONS
(505).419
VE-type Injection Pump 419
Injection Nozzle 419
•

When youread wiring diagrams:
• Read GIsection, "HOWTOREAD WIRING DIAGRAMS" .
• See Elsection, "POWER SUPPLYROUTING" forpower distribution circuit.
When youperform troublediagnoses, readGIsection, "HOWTOFOllOW FLOWCHART INTROU-
BLE DIAGNOSES" and"HOW TOPERFORM EFFICIENT DIAGNOSIS FORANELECTRICAL INCIDENT".

PRECAUTIONSANDPREPARATION
Engine Fuel
&
Emission ControlSystem
I

GA, SR
I

BATTERY • Always usea12 volt battery aspower
source.
• Do not attempt todisconnect battery
cables whileengine isrunning.
INJECTOR • Do not disconnect injectorharness
connectors withengine running.
• Do not apply battery powerdirectly to
injectors.
ECCS PARTS HANDLING
• Handle massairflow sensor carefully to
avoid damage.
• Do not disassemble massairflow
sensor.
• Do not clean massairflow sensor with
any type ofdetergent.
• Do not disassemble IACV-AACvalve.
• Even aslight leakinthe airintake
system cancause serious problems.
• Do not shock orjar the camshaft
position sensor. ECM
• Do not disassembly EGM(EGGS control
module).
• Do not turn diagnosis modeselector
forcibly.
• Ifabattery terminal isdisconnected,
the memory willreturn tothe ECM
value.
The ECM willnow start toself-control
at its initial value. Engine operation can
vary slightly whentheterminal is
disconnected. However,thisisnot an
indication ofaproblem. Donot replace
parts because ofaslight variation.
WHEN STARTING
• Do not depress accelerator pedalwhen
starting.
• Immediately afterstarting, donot revup
engine unnecessarily .
• Do not revupengine justprior to
shutdown.
EC-8 WIRELESS
EQUIPMENT
• When installing C.B.hamradio ora
mobile phone, besure toobserve the
following asitmay adversely affect
electronic controlsystems depending
on itsinstallation location.
1) Keep theantenna asfar aspossible
away fromtheEGM.
2) Keep theantenna feederlinemore than
20 em (7.9 in)away fromtheharness
of electronic controls.
Do not letthem runparallel foralong
distance.
3) Adjust theantenna andfeeder lineso
that thestanding-wave ratiocanbe
kept smaller.
4) Be sure toground theradio tovehicle
body.
FUEL PUMP
• Do not operate fuelpump whenthere
is no fuel inlines.
• Tighten fuelhose clamps tothe
specified torque.
ECCS HARNESS HANDLING
• Securely connectEGGSharness
connectors.
A poor connection cancause an
extremely high(surge) voltage to
develop incoil and condenser, thus
resulting indamage toICs .
• Keep ECGS harness atleast 10em (3.9
in) away fromadjacent harnesses, to
prevent anEGGS system malfunction
due toreceiving externalnoise,
degraded operation ofIGs, etc.
• Keep EGCS partsandharnesses dry.
• Before removing parts,turnoffignition
switch andthen disconnect battery
ground cable.
SEF320R

ENGINEANDEMISSION CONTROL OVERALLSYSTEM
ECCS Component PartsLocation -GA15DE
Distributor withbuilt-in camshaft position
sensor, powertransistor andignition coil
EGR
valve
&
EVAP canister purgecontrol solenoid valve
(Only M/Tmodels)

f
EGR valve (Only M/Tmodels)
Fuel filter
EVAPcanister
Oxygen sensor
Mass
airflow sensor
IACV-AAC valve
(with FICD
solenoid valve)
Throttle
position sensor
Engine coolant temperature
sensor
Massairflow sensor
Throttleposition sensor
SEF123R
EC-18

ENGINEANDEMISSION BASICCONTROL SYSTEMDESCRIPTION
System Chart

I
Camshaft positionsensor

'1
Fuel
injection
&
mixture
ratio control Injectors
Knock sensor
Distributorignitionsystem Powertransistor
Mass airflow sensor
Engine coolant temperature
sensor
Ignition switch Idle
aircontrol system
Fuel pump control
*4

IACV-AAC valve(WithFICD
solenoid valve)
Fuel pump relay

•

'5

Throttle
positionsensor
Neutral positionllnhibitor
switch
Air conditioner switch ECM
(ECCS
control
module)
2

Oxygen sensormonitor

&
On-board diagnostic system

5
Torque converter clutchcan-
cel solenoid valvecontrol
(A/T models) Malfunction
indicatorlamp
(On theinstrument panel)
Torque converter clutchsole-
noid valve
VTC solenoid valve

*6
Air
conditioner relays
Cooling
fanrelay
EVAP canister purgecontrol
solenoid valve
Cooling
fancontrol
Air conditioner cutcontrol
during acceleration
Valve timing control
EVAP canister purgecontrol

7

6

Power
steering oilpressure
switch Battery
voltage
Intake airtemperature sensor

*3

I

Vehicle speedsensor

*2

I
Oxygen sensor

8
'8

Electrical load
• Rear defogger switch
• Lighting switch EGR

&
EVAP canister purge
control EGR
valve
&
EVAP canister
purge control solenoid valve
*1: Except forEurope andIsrael
*2: Heated oxygen sensor(ForEurope andIsrael, andAustralia A/Tmodels)
Oxygen sensor(Except forEurope andIsrael, andAustralia A/Tmodels)
*3: For Australia
*4: IACV-AAC valveandIACV-FICD solenoidvalve(ForEurope andIsrael)
IACV-AAC valve(withFICDsolenoid valve)(Except forEurope andIsrael)
'5: Except forEurope
*6: GA16DE exceptforEurope andIsrael
*7: GA16DE MITmodels exceptforEurope, IsraelandAustralia
*8: For Europe andIsrael andAustralia, andGA15DE MITmodels

EC-23