1995 NISSAN ALMERA N15 RS SRS

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

SECTION

CONTENTS
MAINTENANCE

MA
•

PRECAUTIONS ANDPREPARATION
3

Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System) 3
Supplemental RestraintSystem(SRS)"AIR
BAG" (Single AirBag System) 3
Special Service Tools 4
Commercial ServiceTool 4

PRE-DELIVERY INSPECTIONITEMS
5

GENERAL MAINTENANCE 6
PERIODIC MAINTENANCE (Exceptfor
Europe) 7
Engine andEmission ControlService 7
Chassis andBody Service 8
Maintenance UnderSevere DrivingConditions 9

PERIODIC MAINTENANCE (ForEurope) 10

Engine Oil
&
Minor Service 10
Engine andEmission ControlService 11
Chassis andBody Services 12
Maintenance UnderSevere Driving Conditions 13

RECOMMENDED LUBRICANTSANDFLUIDS 14

Lubricants andFluids 14
SAE Viscosity Number 15
Anti-freeze CoolantMixtureRatio 16

~ --ll
GA
I I

ENGINE MAINTENANCE 17

Checking DriveBelts 17
Changing EngineCoolant... 19
Checking CoolingSystem 21
Checking FuelLines 22
Changing FuelFilter 22
Cleaning andChanging AirCleaner Filter 23
Changing EngineOil 24
Changing OilFilter 24
Checking andChanging SparkPlugs 25
Checking IgnitionWires 26Changing
PositiveCrankcase Ventilation
(PCV) Filter 26
Checking EVAPVapor Lines 26
Checking OxygenSensor(02S)orHeated
Oxygen Sensor(H02S) 27

~ --ll
SR
I I

ENGINE MAINTENANCE 28

Checking DriveBelts 28
Changing EngineCoolant... 29
Checking CoolingSystem 31
Checking FuelLines 32
Changing FuelFilter 32
Changing AirCleaner Filter 33
Changing EngineOil 33
Changing OilFilter 34
Changing SparkPlugs(Platinum-tipped type)34
Checking IgnitionWires 35
Checking EVAPVapor
&
Purge Lines 36
Checking HeatedOxygen Sensor(H02S) 37

~_~ ..-JI
CD
I I

ENGINE MAINTENANCE
38
Manifold NutCheck 38
Checking DriveBelt 38
Changing EngineCoolant. 38
Checking CoolingSystem .40
Checking FuelLine .40
Changing AirCleaner Filter 41
Water Draining, FuelFilter Check and
Replacement 41
Changing EngineOil .41
Changing EngineOilFilter 42
Checking InjectionNozzle 43
Checking IdleSpeed .44
Replacing TimingBelt 44

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
i

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", 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.
MA-3

RESTRAINTSYSTEM
SECTION
RS
CONTENTS
PRECAUTION 2

Supplemental RestraintSystem(SRS)"AIR
BAG" (DualAirBag System) 2
Supplemental RestraintSystem(SRS)"AIR
BAG" (Single AirBag System) 2

SEAT BELTS
3

Front SeatBelt 3
Rear SeatBel!. 5

SUPPLEMENTAL RESTRAINTSYSTEM(SRS) 8

Precautions forSRS "AirBag" and"Seat Belt
Pre-tensioner" Service 8
Special Service Tools 8
Description 9
SRS Component PartsLocation 10
Maintenance Items 11
Removal andInstallation -Diagnosis Sensor
Unit. 12
Removal andInstallation -Seat BeltPre-
tensioner (Mechanical Type) 13
Removal andInstallation -Air Bag Module
and Spiral Cable(DualAirBag System) 14
Removal andInstallation -Air Bag Module
and Spiral Cable(Single AirBag System) 14
Removal -Air Bag Module andSpiral Cable 15
Removal -Front Passenger AirBag Module
(Dual AirBag System) 16Installation
-Air Bag Module andSpiral
Cable 17
Installation -Front Passenger AirBag
Module (DualAirBag System) 18
Disposal ofAir Bag Module andSeat Belt
Pre-tensioner 19

TROUBLE DIAGNOSES -Supplemental
Restraint System(SRS) 25

How toPerform TroubleDiagnoses forQuick
and Accurate Repair 25

TROUBLE DIAGNOSES -Supplemental
Restraint System(SRS)-Dual AirBag System 28

Schematic 28
Wiring Diagram -SRS - 29
Self-diagnosis 32
Trouble Diagnoses forAir Bag Warning Lamp38

COLLISION DIAGNOSIS -Dual AirBag System .40
TROUBLE DIAGNOSES -Supplemental
Restraint System(SRS)-Single AirBag •
System 41•

Schematic 41
Wiring Diagram -SRS - 42
Self-diagnosis 43

COLLISION DIAGNOSIS -Single AirBag
System .45
COLLISION DIAGNOSIS -Seat Belt
Pre-tensioner
.46

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".

PRECAUTION
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.

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", 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.

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.
RS-2

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Precautions forSRS "AirBag" and"Seat Belt
Pre-tensioner" Service

• Donot use acircuit testertocheck SRScircuits.
• Before servicing theSRS. turnignition switch"OFF", disconnect bothbattery cablesandwait forat
least 10minutes.
For approximately 10minutes afterthecables areremoved, itis still possible forthe airbag to
deploy. Therefore, donot work onany SRS connectors orwires untilatleast 10minutes havepassed.
• For single airbag system, donot separate diagnosis sensorunitfrom steering wheel.
• For dual airbag system. diagnosis sensorunitmust always beinstalled withtheir arrow marks
"Q"

pointing towards thefront ofthe vehicle forproper operation. Alsocheck diagnosis sensorunitfor
cracks. deformities orrust before installation andreplace asrequired.
• The spiral cablemustbealigned withtheneutral position sinceitsrotations arelimited. Donot
attempt toturn steering wheelorcolumn afterremoval ofsteering gear.
• Handle airbag module carefully. Alwaysplaceitwith thepad side facing upward.
• Donot use oldbolts afterremoving anySRS parts; replace withnewones. Conduct self-diagnosis
to check entire SRSforproper function.
• For dual airbag system, instrument panelassembly shouldbereplaced afterairbag inflates.

X

X

Use
forspecial bolts
[TAMPER RESISTANT
TORX (SizeT50))

a:
3.5 (0.138)
dia.

b: 8.5 -8.6
(0.335 •0.339) dia.

c: approx.
10

(0.39) sq.

c

NT354
a

HT61961000
and
HT62152000 com-
bined *1 Special torxbit
Special
Service Tools

Application
Tool number
Description Seat
belt DualAir Single
Tool name
pre-ten-BagAirBag
sioner*2 Sstem Sstem
KV991072So Disposingofair bag
Air bag deployment kit module
KV991 06400
X
X

Deployment tool
KV991065So
Deployment tool
adapters
X

For passenger
air bag module
NT353

KV991 05300 Anchorthepassenger
Passenger airbag
airbag module
bracket
X

NT361
Unit:
mm(in)

*1: Special toolorcommercial equivalent
*2: Tools arenotapplicable becauseofits mechanical type.

RS-8

SUPPLEMENTALRESTRAINTSYSTEM(SRS)
Description

The airbag deploys ifthe diagnosis sensorunitactivates whiletheignition switchisinthe "ON" or
"START" position.

Single anddual airbag systems

Ignition
switch

(ON orSTART)
Driver
air
bag module
Diagnosis sensorunit
• Auxiliary powersource (condenser)

• CPU

Battery

Seat beltpre-tensioner

G-Iorce whendecelerating
(greater thanthepredetermined setting)
o

Drive circuit
• G sensor
• Saling sensor Passenger
airbag module
(For dual airbag system)

MRS069AB

Mechanical sensor
Seat belt Mechanical
trigger
Retractor shaft Piston
andwire rope

•

Combined intoseat beltretractor

SRS126
RS-9