NISSAN ALMERA N15 1995 Service Manual

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
Special Service Tools

Tool number
Tool name Description Engine
application

SR GA
EG11140000
Ignition coiladapter
harness

KV10117100

Heated oxygen sensor
wrench

KV10114400

Oxygen sensorwrench
NT338
NT630
NT636
Measuring
enginespeed
Loosening ortightening
heated oxygen sensor
Loosening orlightening
heated oxygen sensor

a: 22 mm (0.87 in)
x

x
x

x

FOR CDENGINE VE-TYPE INJECTION PUMP
Adjusting deviceonvehicle

Tool number
Tool name Description

KV11229352

Measuring device

CD
KV11229350

Holder

@ KV11229360
Nut
@ KV11229370

Pin

@ KV11254410

Dial gauge

KV11102900

Pulley puller
NT570
NT647
EC-4
Measuring
setlength ofplunger spring
Removing injectionpumpsprocket

PRECAUTIONSANDPREPARATION
Special Service Tools(Cont'd)
FOR CDENGINE INJECTION NOZZLE

Tool number
Description
Tool name

KV11289004

Nozzle cleaning kit

CD
KV11290012

Box
@
KV11290110

Brush

@ KV11290122

Nozzle oilsump

•

scraper

@ KV11290140

Nozzle needle tip
cleaner
@
KV11290150

Nozzle seatscraper

@ KV11290210

Nozzle holder

!J) KV11290220

Nozzle holecleaning
needle
NT296
KV11292010

Nozzle centering device

NT293
KV11100300

Nozzle holdersocket

NT563
EC-5

NOTE PRECAUTIONS
ANDPREPARATION
EC-6

PRECAUTIONSANDPREPARATION
Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System)

The Supplemental RestraintSystem"AirBag", usedalong withaseat belt,helps toreduce therisk or
severity ofinjury tothe driver andfront passenger inafrontal collision. TheSupplemental Restraint
System consists ofair bag modules (locatedinthe center ofthe steering wheelandonthe instrument
panel onthe passenger side),adiagnosis sensorunit,warning lamp,wiring harness andspiral cable.
Information necessarytoservice thesystem safelyisincluded inthe
RSsection
ofthis Service Manual.

WARNING:
• Toavoid rendering theSRS inoperative, whichcouldincrease therisk ofpersonal injuryordeath
in the event ofacollision whichwould resultinair bag inflation, allmaintenance mustbeperformed
by an authorized NISSANdealer. •
• Improper maintenance, includingincorrectremovalandinstallation ofthe SRS, canlead topersonal
injury caused byunintentional activationofthe system.
• Donot use electrical testequipment ~nany circuit related tothe SRS unless instructed tointhis
Service Manual. SRSwiring harnesses arecovered withyellow insulation eitherjustbefore the
harness connectors orfor the complete harness,foreasy identification.
Supplemental RestraintSystem(SRS)"AIR
BAG" (Single AirBag System)

The Supplemental RestraintSystem"AirBag", usedalong withaseat belt, helps toreduce therisk or
severity ofinjury tothe driver inafrontal collision. TheSupplemental RestraintSystemconsists ofan
air bag module (located inthe center ofthe steering wheel),adiagnosis sensorunit,warning lamp,
wiring harness andspiral cable. Information necessarytoservice thesystem safelyisincluded inthe

RS section
ofthis Service Manual.

WARNING: • Toavoid rendering theSRS inoperative, whichcouldincrease therisk ofpersonal injuryordeath
in the event ofacollision whichwould resultinair bag inflation, allmaintenance mustbeperformed
by an authorized NISSANdealer.
• Improper maintenance, includingincorrectremovalandinstallation ofthe SRS, canlead topersonal
injury caused byunintentional activationofthe system.
• Donot use electrical testequipment onany circuit related tothe SRS unless instructed tointhis
Service Manual.
EC-7

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

PRECAUTIONSANDPREPARATION
I

GA, SR
I

Precautions forECCS Trouble Diagnosis of
Engine

CAUTION:
• Besure toturn theignition switch"OFF" anddisconnect thenegative batteryterminal beforeany
repair orinspection work.Theopen/short circuitofrelated switches, sensors,solenoidvalves,etc.
will cause malfunction.
• Besure toconnect andlock theconnectors securelyafterwork. Aloose (unlocked) connectorwill
cause malfunction duetothe open circuit. (Besure theconnector isfree from water, grease, dirt,
bent terminals, etc.)
• Besure toroute andclamp theharnesses properlyafterwork. Theinterference ofthe harness with
a bracket, etc.may cause malfunction duetothe short circuit.
• Besure toconnect rubbertubesproperly afterwork. Amisconnected ordisconnected rubbertube•
may cause malfunction.
• Besure toerase theunnecessary malfunctioninformation(repairscompleted) inthe ECM before
returning thevehicle tothe customer.

Precautions

• Before connecting ordisconnecting theECM harness
connector, turnignition switchOFFanddisconnect negative
battery terminal. Failuretodo somay damage theECM
because batteryvoltage isapplied toECM even ifignition
switch isturned off.

SEF289H
•When connecting ECMharness connector, tightensecuring
bolt until redprojection isin line with connector face.

SEF725H
•When connecting ordisconnecting pinconnectors intoor
from ECM, takecare nottodamage pinterminals (bendor
break). Make surethatthere arenotany bends orbreaks onECM
pin terminal, whenconnecting pinconnectors.

Bend Break

SEF291H
EC-9

PRECAUTIONSANDPREPARATION
I
GA, SR
I

Precautions (Cont'd)

• Before replacing ECM,perform Terminals andReference
Value inspection andmake sureECM functions properly.
Refer toEC-281 forSR engine modelandEC-78 forGA
engine model.

/
"

MEF040D
\ I/

'~/"

- CHECK-

/
.......

/
,
\

SEF051P

NG

@~ )

~K

Circuit tester
.1

SEF34BN
•
After performing eachTROUBLE DIAGNOSIS, perform
"OVERALL FUNCTIONCHECK"or"DTC (Diagnostic Trou-
ble Code) CONFIRMATION PROCEDURE".
The DTC should notbedisplayed inthe "DTC CONFIRMA-
TION PROCEDURE" ifthe repair iscompleted. The"OVER-
ALL FUNCTION CHECK"shouldbeagood result ifthe
repair iscompleted.
• When measuring ECMsignals withacircuit tester, never
allow thetwo tester probes tocontact.
Accidental contactofprobes willcause ashort circuit and
damage theECM power transistor.

EC-10

ENGINEANDEMISSION CONTROL OVERALLSYSTEM
Circuit Diagram -Except forAustralia

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EC-11