check engine NISSAN ALMERA N15 1995 Service Manual

SEC5658Enginecoolant temperature sensor

Check engine coolant temperature sensorresistance.

Key-in switch

Check continuity betweenterminals ofkey-in switch connector.

11.5
5.6
3.7
1.2

Resistance
kfl
Continuity
No continuity
Continuity shouldexist.
Ignition
key
Not inserted
Inserted
Coolant
temp.°C('F)

-15 (5)

0(32)

10 (50)
40 (104)
TROUBLE
DIAGNOSES
Quick-glow System(Cont'd)

3. Install glowplugconnecting platesecurely.

Connecting
plate
Spring washer
~GIOwnut
Glow harness
Alternator
Refer to"CHARGING SYSTEM"inEL section.

EC-398

TROUBLEDIAGNOSES ~
Partial LoadAdvance (PLA)Control (Cont'd)

II
~i5
D~CONNECTORII
lOB

~i5

ECM
M
CONNECTOR
II

10B
SEF040Q
SEF949P
INSPECTION
START
CHECK OVERALL FUNCTION.
1) Start engine.
2) Check voltage between ECMterminal

COO
andground.
Voltage: Engine coolant temperature is
lower than10'C (50'F)
Battery voltage
Engine coolant temperature is
higher than60'C (140'F)

OV

CHECK INPUTSIGNAL CIRCUIT.
1) Disconnect ECMharness connector.
2) Disconnect injectionpumpharness
connector.
3) Check harness continuity between
ECM terminal
COO
andterminal
@.

Continuity shouldexist.

OK

CHECK COMPONENT
(Solenoid timer,engine speedsensor).
Refer to"COMPONENT INSPECTION"
on next page.

OK

Disconnect andreconnect harnesscon-
nectors inthe circuit. Thenretest.
Trouble isnot fixed.
Check ECMpin
terminals
fordamage
or the connection ofECM harness con-
nector. Reconnect ECMh~rness con-
nector andretest.

EC-402 OK
NG
NG
INSPECTION
END
Repair harness orcon-
nectors.
Replace solenoid timer,

engine
speedsensor.

If
NG, replace powersteering oilpressure switch.

Solenoid
timer

1. Disconnect solenoidtimerharness connector.
2. Apply battery voltage tosolenoid timerterminals andlisten
for operating sound.

•

No

Operating
sound

Yes

Condition
With battery voltage applied
Without batteryvoltage applied

TROUBLE
DIAGNOSES ~
Partial LoadAdvance (PLA)Control (Cont'd)
COMPONENT INSPECTION
Engine speedsensor

1. Disconnect enginespeedsensor harness connector.
2. Check resistance betweenterminals
@
and
CID.

Resistance: Approximately 1.6Q

If
NG, replace fuelpump.

EC-403

TROUBLEDIAGNOSES
Cooling FanControl (Cont'd)

Checkcooling fanlow
speed control circuit.
(Go to
I
PROCEDURE C
P

Check cooling fanhigh
speed control circuit.
(Go to
I
PROCEDURE D
I.)

NG
NG

INSPECTION
START

OK

CHECK COOLING FANHIGH SPEED
OPERATION. 1) Turn ignition switch"OFF".
2) Reconnect coolingfanrelay-2 and
cooling fanrelay-3.
3) Turn ignition switch"ON".
4) Make surethatcooling fanoperates
at high speed.
CHECK
COOLING FANLOW SPEED
OPERATION. 1) Turn ignition switch"OFF".
2) Disconnect enginecoolant tempera-
ture sensor connector.

SEF168R
3)Disconnect coolingfanrelays 1,2
and 3.
4) Turn ignition switch"ON".
5) Reconnect coolingfanrelay 1.
6) Make surethatcooling fanoperates
at low speed.

SEC163BA OK

INSPECTION END

EC-408

ENGINELUBRICATION
&

COOLING SYSTEMS
SECTION
LC
CONTENTS
•

PRECAUTION
2

PREPARATION
3

GA

ENGINE LUBRICATION SYSTEM
5

Lubrication Circuit.. 5
Oil Pressure Check 6
Oil Pump 7
ENGINE COOLING SySTEM 9
Cooling Circuit 9
Water HoseDrawing 10
System Check 12
Water Pump 13
Thermostat 14
Water Outlet 15
Radiator 16
SR
ENGINE LUBRICATION SYSTEM 17
Lubrication Circuit. 17
Oil Pressure Check 17
Oil Pump 18
Oil FiIter 20
ENGINE COOLING SYSTEM 21
Cooling Circuit 21
System Check 21
Cooling SystemInspection 21
Water Pump 22
Thermostat 23
Water Outlet 24
Radiator 25CO
ENGINE LUBRICATION SYSTEM 26
Lubrication Circuit... 26
Oil Pressure Check 27
Oil Pump ,27
Oil Cooler 30
ENGINE COOLING SYSTEM 31
Cooling Circuit 31
System Check 32
Water Pump ,33
Thermostat 34
Radiator 35
GA,SR,CO
ENGINE COOLING SYSTEM 37
Radiator (Aluminum type) 37
GA,SR
SERVICE DATAANDSPECIFICATIONS (SOS)40
Engine Lubrication System(GA) 40
Engine Cooling System(GA) 40
Engine Lubrication System(SR) 40
Engine Cooling System(SR) 40
CO
SERVICE DATAANDSPECIFICATIONS (SOS)41
Engine Lubrication System .41
Engine Cooling System 41

ENGINELUBRICATION SYSTEM

3. Install pressure gauge.
4. Start engine andwarm itup tonormal operating tempera-
ture.
5. Check oilpressure withengine running underno-load.

If difference isextreme, checkoilpassage andoilpump foroil
leaks.

6. Install oilpressure switchwithsealant.

Oil
Pressure Check
WARNING: • Becareful nottoburn yourself, asthe engine andoilmay
be hot.
• Oilpressure checkshould bedone in"Neutral" gearposi-
tion.

1. Check oillevel.
2. Remove oilpressure switch.

ST25051001 SLC926-A
Engine
speed
rpm
Idle speed
2,000
6,000 Approximate
dischargepressure
kPa (bar,
kg/cm
2,
psi)
More than59(0.59, 0.6,9)
More than245(2.45, 2.5,36)
More than422(4.22, 4.3,61)

LC-6

ENGINELUBRICATION SYSTEM
SEC.
135.150

lil
N.m(kg-m, in-Ib)
~. N.m(kg-m, ft-Ib)

rJ .
Liquid gasket
Oil
Pump

Frontcover side

a~:oo"

Oil pump
cover side

SLC985AA
•

CD
Oilpump cover

@
Inner gear

@
Outer gear

@
Front cover
I])

O-ring

@J
Oilstrainer

(J)
Regulator valve
@

Spring

@
Washer

@)
Plug
Spring]
I

Regulator valve
7
I
REGULATOR
VALVEINSPECTION

1. Visually inspectcomponents forwear anddamage.
2. Check oilpressure regulator valvesliding surface andvalve
spring.
3. Coat regulator valvewithengine oil.Check thatitfalls freely
into thevalve holebyitsown weight.

If damaged, replaceregulator valvesetoroil pump assembly.
SLC986A OILPRESSURE RELIEFVALVEINSPECTION

Inspect oilpressure reliefvalve formovement, cracksand
breaks bypushing theball. Ifreplacement isnecessary, remove
valve byprying itout with suitable tool.
Front Installanew valve inplace bytapping it.

•
Cylinder
block

SLC418A
LC-7

0.045-0.091 (0.0018 -0.0036)
0.110
-0.200 (0.0043 -0.0079)
0.217 -0.327 (0.0085 -0.0129)
0.21 -0.32 (0.0083 -0.0126)
0.05 -0.09 (0.0020 -0.0035)
0.05 -0.11 (0.0020 -0.0043)

Body
toouter gearclearance
CD

Inner geartocrescent clearance @
Outer geartocrescent clearance
@

Body toinner gearclearance @
Body toouter gearclearance @
Inner geartobrazed portionof
housing clearance
@

• Ifthe tipclearance (@)exceeds thelimit, replace gearset.
• Ifbody togear clearances (
(1), ~,
@,
@,
@)
exceed the
limit, replace frontcover assembly.

Using
afeeler gauge, checkthefollowing clearance.

Unit:mm(in)

SLC420A
ENGINE
LUBRICATION SYSTEM
Oil Pump (ConI'd)
DISASSEMBLY ANDASSEMBLY
• Always replace oilseal withanew one.
• When installing oilpump, applyengine oiltogears.
• Make surethatO-ring isfitted properly.
OIL PUMP INSPECTION
Feeler gauge
SLC419A
b SLC222A
LC-8

ENGINECOOLING SYSTEM
System Check

WARNING: Never remove theradiator capwhen theengine ishot; serious
burns couldbecaused byhigh pressure fluidescaping fromthe
radiator.
Wrap athick cloth around capandcarefUlly loosenita quarter
turn torelease built-uppressure. Thenremove thecap com-
pletely.

CHECKING COOLINGSYSTEMHOSES

Check hosesforimproper attachment, leaks,cracks, damage,
loose connections, chafinganddeterioration.

CHECKING RADIATORCAP

To check radiator cap,apply pressure tocap with atester.
Radiator caprelief pressure:
Standard
78 -98 kPa
(0.78 -0.98 bar,0.8-1.0 kg/cm
2,
11-14 psi)
Limit
59 -98 kPa
(0.59 -0.98 bar,0.6-1.0 kg/cm
2,
9-14 psi)

SLC613-A
Pullthenegative pressure valvetoopen it.Check thatitcloses
completely whenreleased.

CHECKING COOLINGSYSTEMFORLEAKS

To check forleakage, applypressure tothe cooling systemwith
a tester.
Testing pressure:
157 kPa (1.57 bar,1.6kg/cm
2,
23psi)
CAUTION: Higher thanthespecified pressure maycause radiator damage.

SLC422A LC-12

ENGINECOOLING SYSTEM

IiJ
6.28 -8.34 (0.641 -0.851, 55.6-73.8)

SEC.
210 Water
Pump

~ 6.28 -8.34 (0.641 -0.851, 55.6-73.8)

WaterpumppUlley
l

~Liquid gasket
~ N.m(kg-m, in-Ib)

SLC989AB
•

CAUTION:
• When removing waterpumpassembly, becareful nottoget
coolant ontiming chain.
• Water pumpcannot bedisassembled andshould be
replaced asaunit.
• After installing waterpump, connect hoseandclamp
securely, thencheck forleaks using radiator captester.
REMOVAL
1. Drain coolant fromradiator andcylinder block.
2. Remove drivebeltsforcompressor, powersteering pump
and alternator.
3. Remove waterpumppulley.
4. Remove waterpump.

INSPECTION
1. Check bodyassembly forrust orcorrosion.
2. Check forrough operation duetoexcessive endplay.

SLC162A LC-13