Nissan Versa Note. Instruction — part 164

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

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Radiator shroud

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Improper engine coolant
mixture ratio

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Engine coolant viscosity

—

Poor engine coolant quality

—

Periodic maintenance

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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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Except cool-
ing system
parts mal-
function

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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

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Installed improper size
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air
flow

Blocked bumper

Installed front bumper fas-
cia cover

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Blocked radiator grille

Mud contamination or paper
clogging

Blocked radiator

Blocked air flow

Blocked condenser

Installed large fog lamp

Symptom

Check items

CO-8

< PERIODIC MAINTENANCE >

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ENGINE COOLANT

PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

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CHECKING COOLING SYSTEM HOSES

Check hoses for the following:

• Improper attachment

• Leaks

• Cracks

• Damage

• Loose connections

• Chafing

• Deterioration

CHECKING RESERVOIR LEVEL

• Check that the reservoir tank engine coolant level is within the

MAX (A) to MIN (B) range when the engine is cool.

• Adjust the engine coolant level if necessary.

CAUTION:

Refill the engine cooling system with the specified coolant or

equivalent. Refer to

MA-11, "Fluids and Lubricants"

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CHECKING COOLING SYSTEM FOR LEAKS

WARNING:

Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure

engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly push down and

turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down

and turning it all the way.

CAUTION:

• Perform this step when the engine is cold.

• Do not spill engine coolant on drive belt.

To check for leaks, apply pressure to the cooling system using suit-

able tool (A) and Tool (B).

Draining Engine Coolant

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WARNING:

Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure

engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly push down and

turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down

and turning it all the way.
1. Remove front under cover. Refer to

EXT-37, "FRONT UNDER COVER : Removal and Installation"

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JPBIA0102ZZ

Tool number (B)

: EG17650301 (J-33984-A)

Testing pressure

: Refer to

CO-12, "RADIATOR

: Inspection"

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PBIC5121J