Nissan Note E12. Instruction — part 112

CO-4

< SYSTEM DESCRIPTION >

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DESCRIPTION

SYSTEM DESCRIPTION

DESCRIPTION

Engine Cooling System

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M/T models

CVT models

JSBIA1096GB

JSBIA1297GB

DESCRIPTION

CO-5

< SYSTEM DESCRIPTION >

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Engine Cooling System Schematic

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M/T models

CVT models

AWBIA1141GB

AWBIA1142GB

CO-6

< SYMPTOM DIAGNOSIS >

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OVERHEATING CAUSE ANALYSIS

SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

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Symptom

Check items

Cooling sys-
tem parts
malfunction

Poor heat transfer

Water pump malfunction

Worn or loose drive belt

—

Thermostat stuck closed

Thermostat

Damaged fins

Dust contamination or pa-
per clogging

Physical damage

Clogged radiator cooling
tube

Excess foreign material
(rust, dirt, sand, etc.)

Reduced air flow

Cooling fan does not oper-
ate

Fan assembly

—

High resistance to fan rota-
tion

Damaged fan blades

Damaged radiator shroud

—

Radiator shroud

—

Improper engine coolant
mixture ratio

—

Engine coolant viscosity

—

Poor engine coolant quality

—

Periodic maintenance

—

Insufficient engine coolant

Engine coolant leaks

Cooling hose

Loose clamp

Cracked hose

Water pump

Poor sealing

Radiator cap

Loose

Poor sealing

Radiator

O-ring for damage, deterio-
ration or improper fitting

Cracked radiator tank

Cracked radiator core

Reservoir tank

Cracked reservoir tank

Overflowing reservoir tank

Exhaust gas leaking into
cooling system

Cylinder head deterioration

Cylinder head gasket deteri-
oration

OVERHEATING CAUSE ANALYSIS

CO-7

< SYMPTOM DIAGNOSIS >

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F

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P

O

Except cool-
ing system
parts mal-
function

—

Overload on engine

Abusive driving

High engine rpm under no
load

Driving in low gear for ex-
tended time

Driving at extremely high
speed

Power train system mal-
function

—

Installed improper size
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air
flow

Blocked bumper

Installed front bumper fas-
cia cover

—

Blocked radiator grille

Mud contamination or paper
clogging

Blocked radiator

Blocked air flow

Blocked condenser

Installed large fog lamp

Symptom

Check items