Qashqai J11. Engine cooling system - part 5

CO-66

< PERIODIC MAINTENANCE >

[K9K]

ENGINE COOLANT

• Never put additive such as waterleak preventive, since it may cause cooling waterway clogging.
• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality

mixed with water (distilled or demineralized). Refer to 

MA-59, "Fluids and Lubricants"

.

1.

Install reservoir tank if removed and radiator drain plug (1).

CAUTION:

Be sure to clean drain plug and install with new O-ring.

2.

Check that each hose clamp has been firmly tightened.

3.

Disconnect heater hose (1) at position (

) in the figure.

• Enhance heater hose as high as possible.

4.

Fill reservoir tank with engine coolant.

CAUTION:

Never adhere the engine coolant to electronic equipments (alternator etc.).
• Pour coolant slowly of less than 3   (2-5/8 Imp qt) per minute to allow air in system to escape.

•

5.

When engine coolant spill from heater hose with continuous
flow, connect heater hose and continue filling reservoir tank until
reach “MAX” level 

6.

7.

Install radiator cap.

8.

Warm up engine at 3000 rpm until thermostat is opened.
• Check thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.

CAUTION:

Watch water temperature gauge so as not to overheat engine.

E1BIA1139ZZ

: Vehicle front

JPBIA4208ZZ

Engine coolant capacity
(With reservoir tank at “MAX” level)

Refer to 

CO-81, "Periodical Maintenance Specifica-

tion"

.

A

:  MAX

B

:  MIN

Reservoir tank engine coolant capacity 
(At “MAX” level)

Refer to 

CO-81, "Periodical Maintenance Specification"

.

JPBIA0102ZZ

ENGINE COOLANT

CO-67

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9.

Stop the engine and cool down to less than approximately 50

°

C (122

°

F).

• Cool down using fan to reduce the time.
• If necessary, refill radiator up to filler neck with engine coolant.

CAUTION:

Never adhere the engine coolant to electronic equipments (alternator etc.).

10. Refill reservoir tank to “MAX” level line with engine coolant.

11. Repeat steps 7 through 10 two or more times with radiator cap installed until engine coolant level no

longer drops. 

12. Check cooling system for leakage with engine running.
13. Warm up the engine, and check for flowing noise while repeat at least three time slow acceleration from

idle up to 3,000 rpm.

14. If flowing noise is heard, bleed air from cooling system by repeating step 7 through 13 until the flowing

noise is longer heard. 

Flushing

INFOID:0000000010464139

1.

Install reservoir tank if removed and radiator drain plug (1). 

CAUTION:

Be sure to clean drain plug and install with new O-ring.

2.

Disconnect heater hose (1) at position (

) in the figure.

• Enhance heater as high as possible.

3.

Fill reservoir tank with water.
• When engine coolant over flows disconnected heater hose, connect heater hose, and continue filling the

engine coolant.

4.

Install radiator cap.

5.

Run the engine and warm it up to normal operating temperature.

6.

Rev the engine two or three times under no-load.

7.

Stop the engine and wait until it cools down.

8.

Drain water from the system. Refer to 

CO-65, "Draining"

.

9.

Repeat steps 1 through 8 until clear water begins to drain from radiator.

E1BIA1139ZZ

: Vehicle front

JPBIA4208ZZ

CO-68

< PERIODIC MAINTENANCE >

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RESERVOIR TANK CAP

RESERVOIR TANK CAP

Inspection

INFOID:0000000010450962

• Fit the adapter to the reservoir tank cap tester [SST: — (M.S. 554-

07)] (A) as shown.

• When connecting the reservoir tank cap to the reservoir tank cap

tester, apply water or LLC to the reservoir tank cap seal part.

• Check reservoir tank cap relief pressure.

• Replace the reservoir tank cap if the engine coolant passes

through it, or if any fur signs is detected.

CAUTION:

When installing reservoir tank cap, thoroughly wipe out the res-
ervoir tank filler neck to remove any waxy residue or foreign
material.

Standard: Refer to 

CO-106, "Radiator"

.

E1BIA0057ZZ

RADIATOR

CO-69

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RADIATOR

Inspection

INFOID:0000000010416372

Check radiator for mud or clogging. If necessary, clean radiator as follows.

CAUTION:

• Never bend or damage the radiator fins.
• When radiator is cleaned without removal, remove all surrounding parts such as radiator fan, radia-

tor shroud and horns. Then tape the harness and connectors to prevent water from entering.

1.

Apply water by hose to the back side of the radiator core vertically downwards.

2.

Apply water again to all radiator core surface once per minute.

3.

Stop washing if any stains no longer flow out from the radiator.

4.

Blow air into the back side of radiator core vertically downwards.

• Use compressed air lower than 490 kPa (4.9 bar 5 kg/cm

2

, 71psi) and keep distance more than 30 cm (11.8

in). 

5.

 Blow air again into all the radiator core surface once per minute until no water sprays out.

CO-70

< REMOVAL AND INSTALLATION >

[K9K]

RADIATOR

REMOVAL AND INSTALLATION

RADIATOR

Exploded View

INFOID:0000000010438803

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Removal and Installation

INFOID:0000000010416380

REMOVAL

WARNING:

• Never remove reservoir tank cap when engine is hot. Serious burns may occur from high-pressure

engine coolant escaping from radiator. 

• Wrap a thick cloth around the reservoir tank cap. Slowly turn it a quarter of a turn to release built-up

pressure. Then turn it all the way.

1.

Radiator core support

2.

Radiator hose (upper)

3.

Radiator hose (lower)

4.

Cooling fan assembly

5.

Clip

6.

Air guide (LH)

7.

Mounting rubber

8.

Radiator

9.

Air guide (Lower)

10. Air guide (RH)

11.

Intercooler

12. Radiator mounting bracket

E1BIA1116GB

RADIATOR

CO-71

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NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.

1.

Drain engine coolant from radiator. Refer to 

CO-11, "Draining"

.

CAUTION:

• Perform this step when the engine is cold.
• Never spill engine coolant on drive belt.

2.

Remove front bumper. Refer to 

EXT-19, "Removal and Installation"

.

3.

Remove air inlet tube and air inlet hose. Refer to 

EM-27, "Removal and Installation"

.

4.

Remove charge air cooler. Refer to 

EM-27, "Removal and Installation"

.

5.

Separate condenser from radiator.

6.

Remove radiator hose (upper and lower).

7.

Disconnect harness connectors from cooling fan, and move harness aside.

8.

Remove radiator and cooling fan assembly.

CAUTION:

Be careful not to damage radiator core and condenser  core.
NOTE:
In case of lower pin radiator is damaged, it can be repaired instead of replacing the radiator.

INSTALLATION

Note the following, and install in the reverse order of removal.

CAUTION:

• Replace water hose clamp if it is removed.
• Use genuine mounting bolts for the cooling fan assembly and strictly observe the tightening torque.

(Breakage prevention for radiator)
Never reuse o-ring

NOTE:
• Insert the radiator hose (1) all the way to the stopper (2) or by 33 mm (1.30in) (hose without a stopper)

• For the orientation of the hose clamp pawl, refer to the figure.

*: Refer to the illustrations for the specific position each hose clamp tab.

Unit: mm (in)

A.

Radiator side

B.

Engine side

JPBIA4294GB

Radiator hose

Hose end

Paint mark

Position of hose clamp*

Radiator hose (upper)

Radiator side

Upper

A

Engine side

Upper

B

Radiator hose (lower)

Radiator side

Lower

C

Engine side

Upper

D

CO-72

< REMOVAL AND INSTALLATION >

[K9K]

RADIATOR

• The angle (b) created by the hose clamp pawl and the specified

line (A) must be within 

±

30

°

 as shown in the figure.

• To install hose clamps (1), check that the dimension (A) from the

end of the paint mark (2) on the radiator hose to the hose clamp is
within the reference value.

Inspection

INFOID:0000000010438804

INSPECTION AFTER INSTALLATION

• Check for leakage of engine coolant using the radiator cap tester adapter (commercial service tool) and the

radiator cap tester (commercial service tool). Refer to 

CO-19, "Inspection"

.

• Start and warm up the engine. Check visually that there is no leakage of engine coolant.

E.

View E

f.

45

°

g.

45

°

: Vehicle upper

JSBIA1059ZZ

JPBIA4295ZZ

Dimension “A”

: 3 mm (0.12 in)

JPBIA4374ZZ

COOLING FAN

CO-73

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COOLING FAN

Exploded View

INFOID:0000000010438805

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Removal and Installation

INFOID:0000000010416382

REMOVAL

1.

Drain engine coolant from radiator. Refer to 

CO-11, "Draining"

.

CAUTION:

• Perform this step engine is cold.
• Never spill engine coolant on drive belt.

2.

Remove front bumper. Refer to 

EXT-19, "Removal and Installation"

 .

3.

Remove air inlet tube and air inlet hose. Refer to 

EM-27, "Removal and Installation"

.

4.

Remove charge air cooler. Refer to 

EM-27, "Removal and Installation"

.

5.

Disconnect harness connectors from cooling fan, and move harness to aside.

6.

Remove cooling fan assembly.

CAUTION:

Be careful not to damage or scratch on radiator core when removing.

INSTALLATION

Note the following, and install in the reverse order of removal.

CAUTION:

Only use genuine parts for fan shroud mounting bolt and observe the specified torque (to prevent
radiator from being damaged).
NOTE:
Cooling fan is controlled by ECM. For details, Refer to 

ECK-21, "Cooling Fan"

.

1.

Fan shroud

2.

Fan motor

3.

Resistor

4.

Radiator

E1BIA1117GB

CO-74

< REMOVAL AND INSTALLATION >

[K9K]

COOLING FAN

Disassembly and Assembly

INFOID:0000000010438806

DISASSEMBLY

1.

Remove cooling fan mounting nut, and then remove the cooling fan.

2.

Remove fan motor.

ASSEMBLY

Note the following, and assemble in the reverse order of disassembly.
• Apply genuine high strength thread locking sealant on fan motor shaft.

Inspection

INFOID:0000000010438807

INSPECTION AFTER DISASSEMBLY

Cooling Fan

Inspect cooling fan for crack or unusual bend.
• If anything is found, replace cooling fan.

WATER PUMP

CO-75

< REMOVAL AND INSTALLATION >

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WATER PUMP

Exploded View

INFOID:0000000010416383

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Removal and Installation

INFOID:0000000010416384

WARNING:

Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.

NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.

REMOVAL

1.

Drain engine coolant. Refer to 

CO-65, "Draining"

.

CAUTION:

Perform when engine is cold. 

2.

Remove front wheel RH.

3.

Remove fender protector (RH). Refer to 

EXT-32, "Removal and Installation"

4.

Remove drive belt. Refer to 

EM-273, "Removal and Installation"

.

5.

Remove timing belt and inner cover. Refer to 

EM-305, "Removal and Installation"

.

6.

Remove the water pump.
• Coolant will leak from the cylinder block, so have a receptacle ready below.

CAUTION:

• Handle the water pump vane so that it does not contact any other parts.
• Water pump cannot be disassembled and should be replaced as a unit.

INSTALLATION

• Install in the reverse order of removal.

CAUTION:

Never reuse gasket

Inspection

INFOID:0000000010416385

INSPECTION AFTER REMOVAL

MBIB1232E

1.

Water pump

2.

Gasket

3.

Cylinder block

CO-76

< REMOVAL AND INSTALLATION >

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WATER PUMP

• Visually make sure there is no significant dirt or rusting on the

water pump body and vane.

• Make sure there is no looseness in the vane shaft, and that it turns

smoothly when rotated by hand.

• If there are any unusualness, replace the water pump assembly.

INSPECTION AFTER INSTALLATION

• Check for engine coolant leaks using reservoir tank cap tester. Refer to 

CO-19, "Inspection"

.

MBIB0546E

THERMO PLUNGER UNIT

CO-77

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THERMO PLUNGER UNIT

Exploded View

INFOID:0000000010438937

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Removal and Installation

INFOID:0000000010438938

REMOVAL

CAUTION:

Make sure that the engine is cool down before operating, in order to avoid hot coolant outflow, as the
electric pump is turned on even if the engine is off. On the other hand the pump is turned off when the
engine is on. In this case as the electric pump is working, the thermostat will have to stay open due to
high temperatures.
1.

Remove the battery negative cable.

2.

Lift the vehicle. 

3.

Remove front fender protector (LH). Refer to 

EXT-32, "Removal and Installation"

4.

Drain the engine coolant. 

CO-65, "Draining"

5.

Remove the ground cable bolt.

6.

Disconnect thermo plunger unit connector.

7.

Remove the thermo plunger connection caps.

8.

Remove the thermo plunger connection nuts using the appropriate tool.

9.

Remove the water hose from thermo plunger unit.

10. Remove the thermo plunger unit fixing bolts.  

11. Remove the thermo plunger unit.

1.

Water hose

2.

Clamp Thermo plunger control unit

3.

Thermo plunger control unit

4.

Earth lead

5.

Bracket stay

6.

Water hose 

7.

Water hose clip

E1BIA1144GB

CO-78

< REMOVAL AND INSTALLATION >

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THERMO PLUNGER UNIT

INSTALLATION

NOTE:
• Thermo plunger caps must be correctly installed after removal.
• The hoses must be fully pushed onto pipe before tightening the clamp.
• Clamp must be fixed 5mm MIN from end of hose.

Installation is basically the reverse order of the removal.

 Thermo plunger bracket stay bolt: 10 N.m (1 kg-m, 7 ft-lb)

THERMOSTAT

CO-79

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THERMOSTAT

Inspection

INFOID:0000000010416388

• Place a thread so that it is caught in the valves of the thermostat.

Immerse fully in a container filled with water. Heat while stirring.
(The example in the figure shows the thermostat.) 

• The valve opening temperature is the temperature at which the

valve opens and falls from the thread.

• Continue heating. Check the full-open lift amount.
• After checking the full-open lift amount, lower the water tempera-

ture and check the valve closing temperature. 

• If the measured value is out of the standard value or unusual valve

seating condition is found, replace water inlet and thermostat
assembly.

SLC949A

Items

Temperature 

°

C (

°

F)

Start of opening

Refer to 

CO-81, "Thermostat"

     

CO-80

< REMOVAL AND INSTALLATION >

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WATER OUTLET

WATER OUTLET

Exploded View

INFOID:0000000010416389

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

Removal and Installation

INFOID:0000000010416390

REMOVAL

NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.

1.

Remove battery. Refer to 

PG-155, "Removal and Installation"

.

2.

Remove vacuum hose. Refer to 

EM-292, "Exploded View"

.

3.

Remove vacuum pump. Refer to 

EM-292, "Exploded View"

.

4.

Drain engine coolant. Refer to 

CO-11, "Draining"

.

CAUTION:

Perform when engine is cold.

5.

Remove radiator upper hose. Refer to 

CO-70, "Exploded View"

.

6.

Remove water hose.

7.

Remove water outlet.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

Never reuse gasket and o-ring

1.

Water outlet 

2.

Gasket

3.

Thermostat

4.

O-ring

5.

Lock plate

6.

 Engine coolant temperature sensor

7.

O-ring

8.

Water hose Air relief plug

A.

To radiator hose upper

B.

To heater core

E1BIA0903GB

SERVICE DATA AND SPECIFICATIONS (SDS)

CO-81

< SERVICE DATA AND SPECIFICATIONS (SDS) 

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Periodical Maintenance Specification

INFOID:0000000010416391

ENGINE COOLANT CAPACITY (APPROXIMATE)

Unit: 

 (Imp qt)

Radiator

INFOID:0000000010416392

Unit: kPa (bar, kg/cm

2

, psi)

Thermostat

INFOID:0000000010416393

Standard

Engine coolant capacity (With reservoir tank at “MAX” level)

6.3 (5-1/2)

Reservoir tank engine coolant capacity (At “MAX” level)

0.8 (3/4)

Reservoir tank cap relief pressure

140 (1.4, 1.4, 20)

Leakage testing pressure

140 (1.4, 1.4, 20)

Item

Temperature 

°

C (

°

F)

Start of opening

83 (181)