Nissan Juke F15. Manual - part 188

DESCRIPTION

CO-35

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

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Engine Cooling System Schematic

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CVT models

JPBIA7036GB

CO-36

< SYSTEM DESCRIPTION >

[MR EXCEPT FOR NISMO RS MODELS]

DESCRIPTION

M/T models

JSBIA5998GB

RADIATOR

CO-37

< BASIC INSPECTION >

[MR EXCEPT FOR NISMO RS MODELS]

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BASIC INSPECTION

RADIATOR

Cleaning the Radiator

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Check radiator for mud or clogs, and follow the procedure below to remove any that are found.

CAUTION:

• Never bend or damage radiator fin.

• When cleaning radiator mounted to the vehicle, remove surrounding parts such as cooling fan

assembly and horn. Cover harnesses and connectors with tape, never expose those parts to water.

1. Flush with water vertically by hose from back of radiator.

• Repeat cleaning. Be careful not to wash continuously with water at the same location.

2. Clean dirt from radiator completely.
3. Blow-dry vertically from back of radiator with compressed air.

CAUTION:

Blow-dry from a location 30 cm or more away from radiator, using a pressure of less than
0.49 MPa (5 kg/cm

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• Do not blow-dry continuously at the same location. Continue blow-drying until there is no water.

CO-38

< SYMPTOM DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

OVERHEATING CAUSE ANALYSIS

SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Diagnosis Chart by Symptom

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Symptom

Inspection item

Cooling sys-
tem mal-
functions

Poor heat radiation

Water pump malfunction

Drive belt looseness or 
wear

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Multi-way control valve is 
stuck closed.

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Damage of radiator fins

Clogging by mud or foreign 
substance

Physical damage

Clogged radiator hose

Foreign substance intru-
sion (corrosion, mud, sand, 
etc.)

Reduced cooling airflow

Cooling fan does not oper-
ate

Cooling fan assembly

—

Poor cooling fan rotation

Damage of cooling fan

Damage of radiator shroud

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Incorrect LLC concentra-
tion

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Deteriorated coolant

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LLC concentration

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Low coolant level

Coolant leakage

Radiator hose

Loose hose clamps

Cracks and fractures of 
hose

Water pump

Poor seal

Radiator cap

Looseness

Poor seal

Radiator

Damage, deterioration, or 
poor installation of O-ring

Cracks and fractures of ra-
diator tank

Cracks and fractures of ra-
diator core

Reservoir tank

Cracking of reservoir tank 
cap

Overflow of coolant from 
the reservoir tank

Entry of combustion gas 
into the cooling system

Cylinder head distortion

Deterioration of cylinder 
head gasket