Nissan Qashqai J11. Manual - part 170

CO-84

< PREPARATION >

[R9M]

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000010438990

NISSAN tool number
(RENAULT too number)
Tool name

Description

WS39930000
(        —       )
Tube pressure

Pressing the tube of liquid gasket

 —
(M.S. 554-07)
Tester

Leak checking
Checking reservoir tank cap

 —
(M.S. 554-01)
Reservoir tank cap tester adapter A

Adapting tester to reservoir tank

 —
(M.S. 554-06)
Reservoir tank cap tester adapter B

Adapting tester to reservoir tank cap

NI. 205
 —
Coolant refill tool

Refilling engine cooling system

S-NT052

MLIA0012E

MLIA0013E

MLIA0014E

LMA053

DESCRIPTION

CO-85

< SYSTEM DESCRIPTION >

[R9M]

C

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SYSTEM DESCRIPTION

DESCRIPTION

Engine Cooling System

INFOID:0000000010416519

Schema

Desciption

E1BIA1150ZZ

1.

Reservoir tank 

2.

Water pump

3.

Bleed screw

4.

EGR cooler

5.

Heater core

6.

Heating elements (Thermo plungers)

7.

Thermostat

8.

Radiator

9.

Water-oil heat exchanger

10.

Water valve

CO-86

< SYSTEM DESCRIPTION >

[R9M]

DESCRIPTION

1.

Engine cold
• On cold engine start, the water valve (3) is closed to prevent the flow of water around combustion cham-

bers. 

2.

Engine warm
• Once the optimum temperature of combustion chambers is reached, the water valve (3) opens and the

cooling circuit returns to its nominal operating mode.

E1BIA0642ZZ

1.

Engine

2.

Water pump

3.

Water valve

4.

Thermostat 5.

Radiator

6.

Heater 

core

7.

EGR cooler

8.

Reservoir tank

A.

Engine cold

B.

Engine warm

OVERHEATING CAUSE ANALYSIS

CO-87

< SYMPTOM DIAGNOSIS >

[R9M]

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SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

INFOID:0000000010416520

Symptom

Check items

Cooling sys-
tem parts 
malfunction

Poor heat transfer

Water pump malfunction

Worn or loose drive belt

—

Thermostat 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

—

—

—

Improper engine coolant 
mixture ratio

—

—

—

Poor engine coolant quality

—

Engine coolant viscosity

—

Insufficient engine coolant

Engine coolant leakage

Cooling hose

Loose clamp

Cracked hose

Water pump

Poor sealing

Reservoir tank 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 leakage into 
cooling system

Cylinder head deterioration

Cylinder head gasket deteri-
oration