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
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
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]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
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
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