Nissan Titan. Instruction — part 68

PREPARATION

CO-5

< PREPARATION >

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Commercial Service Tool

INFOID:0000000009886468

Tool name

Description

Power tool

Loosening nuts, screws and bolts

Radiator cap tester

Checking radiator and radiator cap

PIIB1407E

PBIC1982E

CO-6

< SYSTEM DESCRIPTION >

COOLING SYSTEM

SYSTEM DESCRIPTION

COOLING SYSTEM

Cooling Circuit

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WBIA0439E

COOLING SYSTEM

CO-7

< SYSTEM DESCRIPTION >

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Schematic

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WBIA0463E

CO-8

< SYSTEM DESCRIPTION >

OVERHEATING CAUSE ANALYSIS

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

Coolant circulation

Damaged fins

Dust contamination or pa-
per clogging

Physical damage

Clogged radiator cooling
tube

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

Water cut valve malfunction

Excess foreign material
(rust, dirt, sand, etc.), phys-
ical damage

Reduced air flow

Cooling fan does not oper-
ate

Fan assembly

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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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Coolant viscosity

—

Poor engine coolant quality

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Engine coolant density

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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 leaks into cool-
ing system

Cylinder head deterioration

Cylinder head gasket deteri-
oration