1995 NISSAN ALMERA N15 engine wiring

Drainplug(Radiator)
SFA110A
SFA 1538
SEM534D ENGINE
REMOVAL

1. Remove engineundercovers andsplash covers.
2. Remove frontexhaust tube.
3. Drain coolant anddisconnect lowerwater hosefromradia-
tor.
4. Drain transaxle oil.
5. Disconnect electricalwiringfromcooling fan.
6. Remove powersteering mounting bolt. •
7. Drain coolant fromcylinder block.
8. Disconnect waterhoses andremove radiator.
9. Disconnect fueltubes andvacuum tubes.
10. Release powersteering beltadjusting nutand remove
power steering pumpfromengine.
Bind pump properly tothe vehicle.
11. Disconnect orremove electrical wiringwhere necessary.
12. Release clutchlevercable andaccelerator cable.
13. Remove speedometer pinionconnector fromtransaxle.
14. Remove frontwheels.
15. Remove brakecaliper mounting boltsandbind caliper prop-
erly tovehicle (coilspring) LH
&
RH.
16. Remove lowerballjoint nutsandrelease theupper hub
mounting bolts.
17. Release steering armballjoint using asuitable tool.
Remove driveshafts fromtransaxle.
1) RH: Split drive shaftcenter thrustbearing.
2) RH
&
LH: Remove hubmounting boltsandremove drive
shaft carefully fromtransaxle.
18. Mount suitable slingers tocylinder head.Fithoist with
studge andhoist engine torelease forceonengine mount-
ings.

EM-141

GENERALINFORMATION •
SECTION
G
I

CONTENTS
PRECAUTIONS 2

Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System) 2
Supplemental RestraintSystem(SRS)"AIR
BAG" (Single AirBag System) 2
Precautions forNATS V2.0(ForGasoline
Engine Model) 3
General Precautions 3
Precautions forMultiport FuelInjection
System orECCS Engine 5
Precautions forThree WayCatalyst 5
Engine Oils 5
Precautions forFuel 6

HOW TOUSE THIS
MANUAL 7

HOW TOREAD WIRING DIAGRAMS 9

Sample/Wiring Diagram-EXAMPL - 9
Description 11
Wiring Diagram Codes(CellCodes) 17

HOW TOPERFORM EFFICIENT DIAGNOSIS FOR
AN ELECTRICAL INCIDENT 18

Work Flow 18
Incident Simulation Tests 19
Circuit Inspection 23
HOW
TOFOLLOW FLOWCHART INTROUBLE
DIAGNOSES 29
CONSULT CHECKING SYSTEM
32

Function andSystem Application 32
Lithium BatteryReplacement.. 32
Checking Equipment 32

IDENTIFICATION INFORMATION 33

Model Variation 33
Identification Number 36
Di mens ions 39
Wheels andTires 39

LIFTING POINTSANDTOW TRUCK TOWING ..40

Preparation 40
Board-on
Lift
40
Garage JackandSafety Stand 41
2-pole Lift 42
Tow Truck Towing 43

TIGHTENING TORQUEOFSTANDARD BOLTS
44

SAE J1930 TERMINOLOGY LIST 45

SAE J1930 Terminology List.. 45

HOWTOREAD WIRING DIAGRAMS
Description (Cont'd)

FOLDOUT PAGE

The foldout pageshould beopened whenreading wiringdiagram.

Super multiple junction (SMJ)

In wiring diagram, connectors consistingofterminals havingterminal numbers withanalphabet (81,
DO, etc.) areSMJ connectors.
If connector numbersareshown inReference Area,these connector symbolsarenotshown inConnec-
tor Area. Forterminal arrangement ofthese connectors, refertothe foldout pageatthe end ofthis
manual.

Joint connector

Joint connector symbolsareshown inConnector Areainthe wiring diagram concerned. Foldoutpage
also carries
insidewiring
layouttogether withsuch jointconnector symbols.

Example SuperMultiple Junction
(SMJ)
L----S

I
(Main
I

R harness)

@
BR

1~~_~_5 __
1~1

....... @ID .......

L (Engine BR

I
room
I

harness) AlB1Cl
01ElFIGl
A2B2 C202 E2F2G2
A3B3C3 E3F3G3
A4B4
@]
F4G4
5 B5 F55
A6B6
0
F6G6
A7B7 F77
A8B8C8 E8F8G8

09

A989C9 E9F9G9
AO BOCO DO EOFOGO Gl
FlEl 01ClBlAl
2F2E202C2B2A2
G3 F3E3 C3B3 A3
G4F4
C
B4A4
G5 F5 B5A5
G6 F6 86A6
G7F7 B7A7
G8F8 E8 C888A8

09

G9 F9E9 C989A9
GO FOEO 0 COBO AO

r-
BR
(Mainharness) (Engine
roomharness) BR----{

rDI.TI:IImP
[ill![ill]
@g)
JOINT
CONNECTOR
Terminal Arrangement

*
r::t::rrm::m:J

'M'i'

[ill]II!J ~

*

~

rll"
!! !
I
!
I II
!I
I
'J ~

~lllll!I!!lIllbV ~

SUPER
MULTIPLE UNCTION(SMJ)

Terminal Arangement
*
@)

~=fH+H=1
[II

STARTING
SYSTEM
G
SYSTEM
Diagram
~r-

[Jcheck

CJ

OCh~'

o
[J

STARTI
Wirin

@(3)

'tffB'
@)
Qfu@

@)

@

"-)-~
y

Connector Area
ReferenceArea:
Refer tothe foldout pageforthe terminal arrangement
of the connectors shownhereinthe "Reference Area".

SG1859-A

GI-16

HOWTOREAD WIRING DIAGRAMS
Wiring Diagram Codes(CellCodes)

Use thechart below to'find outwhat each wiring diagram code•
stands for,

Code Section WiringDiagram Name
AACIV ECIACV-AAC
Valve
ABS BR
Anti-lock BrakeSystem
A/C HAManualAirConditioner
A/CCUT ECAir
Conditioner CutControl
A/T ATAutomatic Transmission
AIM ELHeadlamp System
AIRREG ECIACV-Air Regulator
AT/C ECA/TControl
AUDIO ELAudio
BACK/L ELBack-up Lamp
CHARGE ELCharging System
CHIME ELWarning Chime
CMPS EC
Camshaft PositionSensor
COOllF ECCooling
FanControl
DEF ELRearWindow Defogger
D/LOCK ELPowerDoorLock
DTRL ELHeadlamp
-With Daytime Light
System
ECTS ECEngine
Coolant Temperature
Sensor
EGR andcanister ControlSolenoid
EGRCIV EC
Valve
FCUT ECFuel
CutSolenoid Valve
F/FOG ELFront
FogLamp
FICO ECIACV-FICD
SolenoidValve
F/PUMP ECFuel
Pump
GLOW ECQuick-glow
system
H/LAMP ELHeadlamp
-Without Daytime
Light System
H/SEAT ELHeated
Seat
HEAT HA
Heater
HLC ELHeadlamp
Washer
H02S ECHeated
Oxygen Sensor
HORN ELHorn,
Cigarette Lighter,Clock
IATS ECIntake
AirTemperature Sensor
IGN/SG ECIgnition
Signal
ILL ELIllumination
INJECT ECInjector
INT/L ELInterior,
SpotandTrunk Room
Lamps Code
Section WiringDiagram Name
KS ECKnock
Sensor
LKUP ECTorque
Converter ClutchSolenoid
Valve
LOAD ECLoadSignal
MAFS ECMass
AirFlow Sensor
MAIN ECMain
Power Supply andGround
Circuit
METER ELSpeedometer,
Tachometer,Temp.
and Fuel Gauges
MIL ECMIL,
Data LinkConnector For
CONSULT
MIRROR ELDOOR
MIRROR
NATS ELNISSAN
ANTI-THEFT SYSTEM
02S ECOXYGEN
SENSOR
EC EVAP
CANISTER PURGECON-
PGCIV TROLSOLENOID VALVE
PLA ECPARTIAL
LOADADVANCE CON-
TROL
EC PARK/NEUTRAL
POSITION
PNP/SW SWITCH
POWER ELPOWER
SUPPLY ROUTING
POWER STEERING OILPRESSURE
PST/SW EC
SWITCH
R/FOG ELREAR
FOGLAMP
SROOF ELSUN
ROOF
SUPPLEMENTAL RESTRAINTSYS-
SRS RS
TEM
S/SIG ECST
ART SIGNAL
START ELSTARTING
SYSTEM
STOP/L ELSTOP
LAMP
TAllIL ELCLEARANCE,
LICENSE,ANDTAIL
LAMPS
TPS ECTHROTTLE
POSITIONSENSOR
TURN SIGNAL ANDHAZARD
TURN EL
WARNING LAMPS
VSS ECVEHICLE
SPEEDSENSOR
VTC ECVTC
SOLENOID VALVE
WARN ELWARNING
LAMPS
WINDOW ELPOWER
WINDOW
WIPER ELFRONT
WIPERANDWASHER
WIP/R ELREAR
WIPER ANDWASHER
GI-17

HOWTOPERFORM EFFICIENT DIAGNOSIS FORANELECTRICAL INCIDENT
Work Flow
- - - -- - -- ------ -- - -- STEP 1
--------------------- STEP2
----------------------- STEP3
- - -- ---- - --- - -- --- --- - - --- -- STEP 4
--------- -------------------- STEP5
- - - - ---- -- -- -- -- -- --- --- STEP 6
SGI838

STEP
STEP 1 DESCRIPTION
Get detailed information abouttheconditions andtheenvironment whentheincident occurred.
The following arekey pieces ofinformation requiredtomake agood analysis:

HOW

WHEN
WHAT
WHERE
Vehicle
Model,Engine, Transmission andtheSystem (i.e.Radio).
Date, TimeofDay, Weather Conditions, Frequency.
Road Conditions, AltitudeandTraffic Situation.
System Symptoms, OperatingConditions (OtherComponents Interaction).
Service Historyandifany After Market Accessories havebeen installed.
Operate thesystem, roadtestifnecessary.
Verify theparameter ofthe incident.
If the problem cannotbeduplicated, referto"Incident Simulation Tests"nextpage.
STEP
2
STEP 3Get
theproper diagnosis materialstogetherincluding:
POWER SUPPLY ROUTING
System Operation Descriptions
Applicable ServiceManualSections
Identify wheretobegin diagnosis baseduponyourknowledge ofthe system operation andthecustomer com-
ments.
STEP 4
STEP 5
STEP 6 Inspect
thesystem formechanical binding,looseconnectors orwiring damage.
Determine whichcircuits andcomponents areinvolved anddiagnose usingthePower Supply Routing andHar-
ness Layouts.
Repair orreplace theincident circuitorcomponent.
Operate thesystem inall modes. Verifythesystem worksproperly underallconditions. Makesureyouhave
not inadvertently createdanew incident duringyourdiagnosis orrepair steps.

GI-18

HOWTOPERFORM EFFICIENT DIAGNOSIS FORANELECTRICAL INCIDENT
Incident Simulation Tests
INTRODUCTION

Sometimes thesymptom isnot present whenthevehicle isbrought infor service.
If
possible, re-create
the conditions presentatthe time ofthe incident. Doingsomay help avoid aNo Trouble FoundDiag-
nosis. Thefollowing sectionillustrates waystosimulate theconditionslenvironment underwhich the
owner experiences anelectrical incident.
The section isbroken intothesixfollowing topics:
• Vehicle vibration
• Heat sensitive
• Freezing
• Water intrusion
• Electrical load
• Cold orhot start up
Get athorough description ofthe incident fromthecustomer. Itis important forsimulating thecondi-
tions ofthe problem.

VEHICLE VIBRATION

The problem mayoccur orbecome worsewhiledriving onarough roadorwhen engine isvibrating
(idle with
AIC
on). Insuch acase, youwillwant tocheck foravibration relatedcondition. Refertothe
illustration below.

Connectors
&
harness

Determine whichconnectors andwiring harness wouldaffecttheelectrical systemyouareinspecting.

Gently
shakeeachconnector andharness whilemonitoring thesystem forthe incident youaretrying
to duplicate. Thistestmay indicate aloose orpoor electrical connection.

Hint

Connectors canbeexposed tomoisture. Itis possible toget athin film ofcorrosion onthe connector
terminals. Avisual inspection maynotreveal thiswithout disconnecting theconnector. Ifthe problem
occurs intermittently, perhapstheproblem iscaused bycorrosion. Itis agood ideatodisconnect, inspect
and clean theterminals onrelated connectors inthe system.

Sensors
&
relays
Gently
applyaslight vibration tosensors andrelays inthe system youareinspecting.
This testmay indicate aloose orpoorly mounted sensororrelay.
•

Vibration test

Bendgently.

GI-19
Tap
gently.

8GI839

HOWTOPERFORM EFFICIENT DIAGNOSIS FORANELECTRICAL INCIDENT
Incident Simulation Tests(Cont'd)
Engine compartment

There areseveral reasons avehicle orengine vibration could•
cause anelectrical complaint. Someofthe things tocheck for
are:
• Connectors notfully seated.
• Wiring harness notlong enough andisbeing stressed due
to engine vibrations orrocking.
• Wires laying across brackets ormoving components.
• Loose, dirtyorcorroded groundwires.
• Wires routed tooclose tohot components.
To inspect components underthehood, startbyverifying the
integrity ofground connections. (RefertoGROUND INSPEC-
TION described later.)Firstcheck thatthesystem isproperly
grounded. Thencheck forloose connection by
gently shaking

the wiring orcomponents aspreviously explained. Usingthe
wiring diagrams inspectthewiring forcontinuity.

Behind theinstrument panel

An improperly routedorimproperly clampedharnesscan
become pinchedduringaccessory installation. Vehiclevibra-
tion canaggravate aharness whichisrouted alongabracket
or near ascrew.

Under seating areas

An unclamped orloose harness cancause wiring tobe pinched
by seat components (suchasslide guides) duringvehicle vibra-
tion. Ifthe wiring runsunder seating areas,inspect wirerout-
ing forpossible damageorpinching.

Heating test

Do not heat above 60°C(140°F).

8GI842 HEAT
SENSITIVE

The owner's problem mayoccur during hotweather orafter car
has satforashort time.Insuch cases youwillwant tocheck
for aheat sensitive condition.
To determine ifan electrical component isheat sensitive, heat
the component withaheat gunorequivalent.

Do not heat components above
60°C
(140°F).
Ifincident occurs
while heating theunit, either replace orproperly insulatethe
component.

GI-21

TROUBLEDIAGNOSES
Contents
How toPerform TroubleDiagnoses forQuick andAccurate Repair HA-15
Operational Check HA-16
Symptom Chart HA-18
Preliminary Check HA-20
PRELIMINARY CHECK1

(A/C
does notblow coldair.) HA-20
PRELIMINARY CHECK2
(Air outlet doesnotchange.) HA-21
PRELIMINARY CHECK3
(Noise) HA-22
PRELIMINARY CHECK4
(I nsufficient heating) HA-23
Performance TestDiagnoses HA-24
INSUFFICIENT COOLING HA-24
Performance Chart HA-26
TEST CONDITION HA-26
TEST READING HA-26
Trouble Diagnoses forAbnormal Pressure HA-27
Harness Layout. HA-31
Circuit Diagram -Air Conditioner HA-34
Wiring Diagram -HEATER - HA-36
Wiring Diagram -AIC - HA-38
Main Power Supply andGround CircuitCheck HA-49
Diagnostic Procedure1
(SYMPTOM: Blowermotordoesnotrotate.) HA-50
Diagnostic Procedure2
(SYMPTOM: Intake doordoes notchange.) HA-52
Diagnostic Procedure3
(SYMPTOM: Magnetclutchdoesnotoperate when
A/C
switch andfanswitch areON.)
- For GAand SRengines HA-54
- For CDengine HA-59
Electrical Components Inspection HA-62
Control Linkage Adjustment HA-64
System Description HA-65
HA-14