1995 NISSAN ALMERA N15 Service Manual

SAEJ1930 TERMINOLOGY LIST
SAE J1930 Terminology List(Cont'd)

NEW TERM NEW
ACRONYM /
OLDTERM
ABBREVIATION
Manifold surfacetemperature MST
...

Manifold surfacetemperature sensor MSTS
...

Manifold vacuumzone MVZ
...

Manifold vacuumzonesensor MVZS
...

Mass airflow sensor
MAFSAirflow meter
Mixture controlsolenoid valve
MCsolenoid valve Air-fuelratiocontrol solenoid valve
Multipart fuelinjection System MFIsystem Fuelinjection control
Neutral position switch
...

Neutralswitch
Non-volatile randomaccessmemory
NVRAM
...

On-board diagnostic system OBOsystem Self-diagnosis
Open loop
OLOpen
loop
Oxidation catalyst
OCCatalyst
Oxidation catalyticconverter system OCsystem
...

Oxygen sensor
02SExhaust
gassensor
Park position switch
...

Parkswitch
Park/neutral positionswitch
PNPswitch Park/neutralswitch
Periodic trapoxidizer system
PTOXsystem
...

Powertrain controlmodule PCM
...

Programmable readonlymemory PROM
...

Pulsed secondary airinjection controlsole-
PAIRCsolenoid valve AIV
control solenoid valve
noid valve
Pulsed secondary airinjection system PAIRsystem Air
induction valve(AIV)control
Pulsed secondary airinjection valve PAIR
valve Airinduction valve
Random accessmemory RAM
...

Read onlymemory ROM
...

Scan tool ST
...

Secondary airinjection pump AIRpump
...

Secondary airinjection system AIR
system
...

Sequential multiportfuelinjection system SFI
system Sequentialfuelinjection

.

Service reminder indicator SRI
...

Simultaneous multipartfuelinjection system
...

Simultaneousfuelinjection
Smoke pufflimiter system SPL
system
...

Supercharger SC
...

Supercharger bypass 5CB
...

System readiness test 5RT
...

Tank fueltemperature sensor
...

...

Thermal vacuumvalve TVV
Thermal
vacuumvalve
Three waycatalyst TWC
Catalyst
Three waycatalytic converter system TWC
system
...

Three way+oxidation catalyst TWC+OC Catalyst

GI-47

SAEJ1930 TERMINOLOGY LIST
SAE J1930 Terminology List(Cont'd)

"':Not applicable
NEW TERM NEW
ACRONYM
I

OLDTERM
ABBREVIATION
Three way
+
oxidation catalyticconverter sys-
TWC
+
OC system
..

,

tem
Throttle body TBThrottlechamber
SPI body
Throttle bodyfuelinjection system TBI
system
Fuelinjection control
Throttle position TP
Throttleposition
Throttle position sensor TPSThrottlesensor
Throttle position switch
TP
switch Throttleswitch
Torque converter clutchsolenoid valve TCCsolenoid valve Lock-upcancelsolenoid

.

Lock-upsolenoid
Turbocharger TC
Turbocharger
Vacuum cutvalve
..

,

Vacuumcontrolvalve
Vacuum cutvalve bypass valve
..

,

...

Vehicle speedsensor VSS
Vehiclespeedsensor
Volume airflow sensor VAFSAir
flow meter
Warm upoxidation catalyst WU-OC
Catalyst
Warm upoxidation catalyticconverter systemWU-OC
system
..

,

Warm upthree waycatalyst WU-TWC
Catalyst
Warm upthree waycatalytic converter systemWU-TWC system
..

,

Wide open throttle position switch WOTP
switch Fullswitch

GI-48

HEATER
&

AIR CONDITIONER
SECTION
HA
CONTENTS
When youread wiring diagrams:
• Read GIsection, "HOWTOREAD WIRING DIAGRAMS" .
• See ELsection, "POWER SUPPLYROUTING" forpower distribution circuit.
When youperform troublediagnoses, readGIsection, "HOWTOFOLLOW FLOWCHART
IN TROUBLE DIAGNOSES" and"HOW TOPERFORM EFFICIENT DIAGNOSIS FORAN
ELECTRICAL INCIDENT".
PRECAUTIONS
ANDPREPARATION 2

Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System) 2
Supplemental RestraintSystem(SRS)"AIR
BAG", (Single AirBag System) 2
Precautions forWorking withHFC-134a (R-
134a) 3
General Refrigerant Precautions 3
Precautions forRefrigerant Connection 4
Precautions forServici ngCompressor. ..5
Special Service Tools 5
HFC-134a (R-134a)ServiceToolsand
Equipment. 6
Precautions forService Equipment 8

DESCRIPTION 10

Refrigeration Cycle .10
Component Layout 11
Discharge AirFlow 12
Control Operation 13

TROUBLE DIAGNOSES 14

Contents 14Wiring
Diagram -HEATER - 36
Wiring Diagram -
AIC - 38
SERVICE PROCEDURES 66

HFC-134a (R-134a)ServiceProcedure 66
Maintenance ofLubricant Quantityin
Compressor 68
Refrigerant Lines 70
Compressor Mounting 75
Belt Tension 76
Fast IdleControl Device(FICO) 76
Compressor -Model DKV-11D andDKV-14D
(ZEXEL make) 77
Compressor Clutch 77
Thermal Protector 80
Compressor -Model CR-14 (Calsonic make)80
Compressor Clutch ..80
Thermal Protector 82
Ventilation AirFilter 83

SERVICE DATAANDSPECIFICATIONS (SDS)84

General Specifications 84
Inspection andAdjustment 84

•

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 onany 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" andused along withaseat belt,helps toreduce therisk
or severity ofinjury tothe driver inafrontal collision. TheSupplemental RestraintSystemconsists of
an 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 anauthorized 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.
HA-2

PRECAUTIONSANDPREPARATION
Precautions forWorking withHFC-134a (R-134a)

WARNING:
• CFC-12 (R-12)refrigerant andHFC-134a (R-134a)refrigerant arenotcompatible. Theserefrigerants
must never bemixed, eveninthe smallest amounts. Ifthe refrigerants aremixed, compressor fail-
ure islikely tooccur .
• Use only specified lubricantforthe HFC-134a (R-134a)
A/C
system andHFC-134a (R-134a)compo-
nents. Iflubricant otherthanthatspecified isused, compressor failureislikely tooccur .
• The specified HFC-134a (R-134a)lubricant rapidlyabsorbs moisture fromtheatmosphere. Thefol-
lowing handling precautions mustbeobserved:
a: When removing refrigerant components fromavehicle, immediately cap(seal) thecomponent
to minimize theentry ofmoisture fromtheatmosphere.
b: When installing refrigerant components toavehicle, donot remove thecaps (unseal) untiljust
before connecting thecomponents. Connectallrefrigerant loopcomponents asquickly aspos-
sible tominimize theentry ofmoisture intosystem.
c: Only usethespecified lubricantfr.omasealed container. Immediately resealcontainers of
lubricant. Withoutpropersealing, lubricant willbecome moisture saturated andshould notbe
used.
d: Avoid breathing
A/C
refrigerant andlubricant vaporormist. Exposure mayirritate eyes,nose
and throat. Remove R-134afromthe
A/C
system, usingcertified serviceequipment meeting
requirements ofSAE J2210 (R-134a recycling eqUipment), orJ2209 (R-134a recovery equipment).
If accidental systemdischarge occurs,ventilate workareabefore resuming service.Additional
health andsafety information maybeobtained fromrefrigerant andlubricant manufacturers.
e: Do not allow lubricant (Nissan
A/C
System OilType S)tocome incontact withstyrofoam parts.
Damage mayresult.

GeneralRefrigerant Precautions

WARNING:
• Donot release refrigerant intotheair. Use approved recoverylrecycling equipmenttocapture the
refrigerant everytimeanair conditioning systemisdischarged.
• Always weareyeand hand protection (gogglesandgloves) whenworking withanyrefrigerant or
air conditioning system.
• Donot store orheat refrigerant containersabove52°C(125°F).
• Donot heat arefrigerant containerwithanopen flame; ifcontainer warmingisrequired, placethe
bottom ofthe container inawarm pailofwater.
• Donot intentionally drop,puncture, orincinerate refrigerant containers.
• Keep refrigerant awayfromopen flames: poisonous gaswillbeproduced ifrefrigerant burns.
• Refrigerant willdisplace oxygen,therefore becertain towork inwell ventilated areastoprevent
suffocation.
• Donot introduce compressed airtoany refrigerant containerorrefrigerant component.

HA-3
•

PRECAUTIONSANDPREPARATION
Precautions forRefrigerant Connection

WARNING: Make sureallrefrigerant isdischarged intotherecycling equipment andthepressure inthe system is
less than atmospheric pressure.Thengradually loosenthedischarge sidehose fitting andremove it.
CAUTION:
When replacing orcleaning refrigerant cyclecomponents, observethefollowing.
• When thecompressor isremoved, storeitin the same position asitis when mounted onthe car.
Failure todo sowill cause lubricant toenter thelow pressure chamber.
• When connecting tubes,always useatorque wrench andaback-up wrench.
• After disconnecting tubes,immediately plugallopenings toprevent entryofdirt and moisture.
• When installing anair conditioner inthe vehicle, connect thepipes asthe final stage ofthe opera-
tion. Donot remove theseal caps ofpipes andother components untiljustbefore required forcon-
nection.
• Allow components storedincool areas towarm toworking areatemperature beforeremoving seal
caps. Thisprevents condensation fromforming inside
AIC
components.
• Thoroughly removemoisture fromtherefrigeration systembeforecharging therefrigerant.
• Always replace usedO-rings.
• When connecting tube,apply lubricant toportions showninillustration. Becareful nottoapply
lubricant tothreaded portion.
Lubricant name:Nissan
AIC
System OilType R
Part number: KLHOO-PAGRO
• O-ring mustbeclosely attached toinflated portionoftube.
• After inserting tubeintounion untilO-ring isno longer visible, tightennuttospecified torque.
• After connecting line,conduct leaktestand make surethatthere isno leakage fromconnections.
When thegas leaking pointisfound, disconnect thatlineand replace theO-ring. Thentighten con-
nections ofseal seattothe specified torque.

O-ring
Apply lubrication oil.

NG

NG
OK -
Inflated portion
SHA525DA
HA-4

PRECAUTIONSANDPREPARATION
Precautions forServicing Compressor

• Plug allopenings toprevent moisture andforeign matterfromentering.
• When thecompressor isremoved, storeitin the same position asitis when mounted onthe car.
• When replacing orrepairing compressor, follow"Maintenance ofLubricant QuantityinCompressor"
exactly. RefertoHA-68.
• Keep friction surfaces betweenclutchandpulley clean.
If
the surface iscontaminated, withlubricant,
wipe itoff byusing aclean waste clothmoistened withthinner.
• After compressor serviceoperation, turnthecompressor shaftbyhand more thanfiveturns inboth
directions. Thiswillequally distribute lubricantinsidethecompressor. Afterthecompressor is
installed, letthe engine idleandoperate thecompressor forone hour.
• After replacing thecompressor magnetclutch,applyvoltage tothe new oneandcheck fornormal
operation.

SpecialService Tools

DKV-11D andDKV-14D compressors

Tool number
Tool name

KV99231260

Clutch disc
wrench

KV99232340

Clutch discpuller Description

NT204
Removing
shaftnutand clutch disc
Removing clutchdisc

NT206
KV99234330
Installing
pulley
PUlley installer

~
NT207
KV99233130
Removing
pulley
Center pulleypuller

C
•

NT208
HA-5

PRECAUTIONSANDPREPARATION
Special Service Tools(Cont'd)
CR-14 compressor

Tool number
Tool name
KV99106700
Clutch discwrench
KV991 06800
Pulley installer Description

NT351
NT352
Removing
shaftnutand clutch disc
Installing pulley

HFC-134a (R-134a)ServiceToolsandEquipment

Never mixHFC-134a refrigerant and/oritsspecified lubricantwithCFC-12 (R-12)refrigerant and/orits
lubrication oil.
Separate andnon-interchangeable serviceequipment mustbeused foreach typeofrefrigerant/
lubricant.
Refrigerant containerfittings,servicehosefittings andservice equipment fittings(equipment which
handles refrigerant and/orlubricant) aredifferent between CFC-12(R-12)andHFC-134a (R-134a).This
is to avoid mixed useofthe refrigerants/lubricant.
Adapters thatconvert onesize fitting toanother mustnever beused: refrigerant/lubricant contamina-
tion willoccur andcompressor failurewillresult.

Tool name
Description Note
HFC-134a (R-134a)refrig-

~~
Container
color:Lightblue
erant Containermarking:HFC-134a (R-134a)
Fitting size:Thread size
• large contai ner1/2"-16 ACME

NT196

Nissan A/CSystem Oil Type:Polyalkyline glycoloil(pAG), typeR
Type R

~
Application:
HFC-134a(R-134a)vanerotary
(Part No.:KLHOO-PAGRO)
compressors(Nissanonly)
Lubricity: 40me (1.4 Imp
fI
oz)

NT197

Recovery/Recycling/
~
Function:
Refrigerant RecoveryandRecy-
Recharging equipment

":'s
Q"'~
cling
andRecharging

==

•

~ t:J
~

II

NT195
HA-6