Nissan X-Trail 32. Manual - part 302

CO-34

< PREPARATION >

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PREPARATION

PREPARATION

PREPARATION

Commercial Service Tools

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Lubricant or/and Sealant

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Tool name

Description

Radiator cap tester

Checking radiator and radiator cap

Radiator cap tester adapter

Adapting radiator cap tester to radiator cap 
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)

PBIC1982E

S-NT564

Name

Description

Note

Three bond 1303

Cooling fan

Fan moter shaft

DESCRIPTION

CO-35

< SYSTEM DESCRIPTION >

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SYSTEM DESCRIPTION

DESCRIPTION

Engine Cooling System

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Cylinder head

Cylinder block

Water pump

Thermostat

Water inlet

Radiator

Thermostat housing (Cylinder block)

Water outlet

To electric throttle control actuator

To oil cooler

To CVT oil warmer

To heater

From heater

From electric throttle control actuator

From oil cooler

From CVT oil warmer

JPBIA6488GB

CO-36

< SYSTEM DESCRIPTION >

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DESCRIPTION

Engine Cooling System Schematic

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JPBIA6489GB

OVERHEATING CAUSE ANALYSIS

CO-37

< SYMPTOM DIAGNOSIS >

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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 and water con-
trol valve stuck closed

—

Damaged radiator 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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Improper engine coolant 
mixture ratio

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—

—

Poor engine coolant quality

—

Engine coolant density

—

Insufficient engine coolant

Engine coolant leakage

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 leaks into cool-
ing system

Cylinder head deterioration

Cylinder head gasket deteri-
oration