Nissan Titan A60. Instruction — part 215

CO-6

< SYSTEM DESCRIPTION >

COOLING SYSTEM

SYSTEM DESCRIPTION

COOLING SYSTEM

Cooling Circuit

INFOID:0000000006179338

WBIA0439E

COOLING SYSTEM

CO-7

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

Schematic

INFOID:0000000006179339

WBIA0463E

CO-8

< SYSTEM DESCRIPTION >

OVERHEATING CAUSE ANALYSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

INFOID:0000000006179340

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

—

High resistance to fan rota-
tion

Damaged fan blades

Damaged radiator shroud

—

Radiator shroud

—

Improper engine coolant
mixture ratio

—

Coolant viscosity

—

Poor engine coolant quality

—

Engine coolant density

—

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

OVERHEATING CAUSE ANALYSIS

CO-9

< SYSTEM DESCRIPTION >

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

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

Powertrain system malfunc-
tion

—

Installed improper size
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air
flow

Blocked radiator grille

Installed car brassiere

—

Mud contamination or paper
clogging

Blocked bumper

Blocked radiator

Blocked condenser

Blocked air flow

Installed large fog lamp

Symptom

Check items