Nissan Juke (2014 year). Service Repair Manual - part 44

DESCRIPTION

CO-5

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Engine Cooling System Schematic

INFOID:0000000009749823

M/T models

CVT models

JPBIA4335GB

JPBIA4334GB

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CO-6

< SYMPTOM DIAGNOSIS >

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OVERHEATING CAUSE ANALYSIS

SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

INFOID:0000000009749824

Symptom

Check items

Cooling sys-
tem parts 
malfunction

Poor heat transfer

Water pump malfunction

Worn or loose drive belt

—

Thermostat and water con-
trol valve stuck closed

—

Damaged 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

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 leakage into 
cooling system

Cylinder head deterioration

Cylinder head gasket deteri-
oration

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OVERHEATING CAUSE ANALYSIS

CO-7

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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

Power train system mal-
function

—

Installed improper size 
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air 
flow

Blocked bumper

—

—

Blocked radiator grille

Installed car brassiere

Mud contamination or paper 
clogging

Blocked radiator

—

Blocked condenser

Blocked air flow

Installed large fog lamp

Symptom

Check items

Revision: 2013 October

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CO-8

< PERIODIC MAINTENANCE >

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ENGINE COOLANT

PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

INFOID:0000000009749825

LEVEL 

• Check that the reservoir tank engine coolant level is within the

“MIN” to “MAX” when the engine is cool.

• Adjust the engine coolant level if necessary.

CAUTION:

Refill Genuine NISSAN Long Life Antifreeze/Coolant (blue) or
equivalent in its quality mixed with water (distilled or deminer-
alized). Refer to 

MA-10, "Fluids and Lubricants"

.

LEAKAGE

• To check for leakage, apply pressure to the cooling system with the

radiator cap tester (commercial service tool) (A) and the radiator
cap tester adapter (commercial service tool) (B).

WARNING:

Never remove radiator cap when engine is hot. Serious burns
may occur from high-pressure engine coolant escaping from
engine cooling system.

CAUTION:

Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

• If anything is found, repair or replace damaged parts.

Draining

INFOID:0000000009749826

WARNING:

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

coolant escaping from radiator. 

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

sure. Then turn it all the way.

1.

Connect drain hose.
• Use a genera-purpose hose with the dimensions show in the

figure.

A

:  MAX

B

:  MIN

JPBIA0102ZZ

Testing pressure: Refer to 

CO-27, "Radiator"

.

PBIC5121J

A

: 

φ

 8  mm (0.31 in)

B

: 300 mm (11.81 in)

JPBIA4770ZZ

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ENGINE COOLANT

CO-9

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2.

Open radiator drain plug (A) at the bottom of radiator, and then
remove radiator cap. 

CAUTION:

Perform this step when engine is cold.
• When draining all of engine coolant in the system, open water

drain plugs on cylinder block. Refer to 

EM-69, "Setting"

.

3.

Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing.
Refer to 

CO-14, "Exploded View"

.

4.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to 

CO-10, "Flushing"

.

5.

Disconnect drain hose.

Refilling

INFOID:0000000009749827

CAUTION:

• Do not reuse O-rings.
• Do not 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-10, "Fluids and Lubricants"

.

1.

Install reservoir tank if removed, and install radiator drain plug.

CAUTION:

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

• If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-69, "Setting"

.

2.

Check that each hose clamp has been firmly tightened.

3.

Remove air duct (suction side). Refer to 

EM-25, "Exploded View"

.

4.

Disconnect vacuum hose break booster side, and removal vacuum tube from clamp. Refer to 

BR-37,

"Exploded View"

.

5.

Disconnect heater hose (1) at position (

) in the figure.

• Enhance heater hose as high as possible.

6.

 Fill radiator (1) to specified level.

CAUTION:

Never adhere the engine coolant to electronic equipments
(alternator etc.).
• Pour coolant slowly of less than 2   (2-1/8 US qt, 1-3/4

Imp qt) a minute to allow air in system to escape.

• When engine coolant overflows disconnected heater

hose, connect heater hose, and continue filling the engine
coolant. 

: Vehicle front

JPBIA4452ZZ

Radiator drain plug

: Refer to 

CO-14, "Exploded View"

.

: Vehicle front

JPBIA4453ZZ

JPBIA0819ZZ

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CO-10

< PERIODIC MAINTENANCE >

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ENGINE COOLANT

7.

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

8.

Install air duct (suction side). Refer to 

EM-25, "Exploded View"

.

9.

Install radiator cap.

10. Warm up engine until opening thermostat. Standard for warming-up time is approximately 10 minutes at

3,000 rpm.
• 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.

11. 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.).

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

13. Repeat steps 6 through 11 two or more times with radiator cap installed until engine coolant level no

longer drops. 

14. Check cooling system for leakage with engine running.

15. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to

3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.
• Sound may be noticeable at heater unit.

16. Repeat step 15 three times.

17. If sound is heard, bleed air from cooling system by repeating step 6 through 11 until reservoir tank level no

longer drops. 

Flushing

INFOID:0000000009749828

1.

Install radiator drain plug.

CAUTION:

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

• If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-69, "Setting"

.

2.

Remove air duct (suction side), air cleaner cover assembly and air cleaner body assembly. Refer to 

EM-

25, "Exploded View"

.

3.

Disconnect vacuum hose break booster side, and remove vacuum tube from clamp. Refer to .

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

 Refer to 

CO-27, "Periodical Maintenance Specifica-

tion"

.

A

:  MAX

B

:  MIN

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

Refer to 

CO-27, "Periodical Maintenance Specification"

.

JPBIA0102ZZ

Radiator drain plug

: Refer to 

CO-14, "Exploded View"

.

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ENGINE COOLANT

CO-11

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4.

Disconnect heater hose (1) at position (

) in the figure.

• Enhance heater as high as possible.

5.

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

engine coolant.

6.

Connect vacuum hose, and install vacuum tube. 

7.

Install air duct (suction side), air cleaner cover assembly and air cleaner body assembly. Refer to 

EM-25,

"Exploded View"

.

8.

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

9.

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

10. Stop the engine and wait until it cools down.

11. Drain water from the system. Refer to 

CO-8, "Draining"

.

12. Repeat steps 1 through 9 until clear water begins to drain from radiator.

: Vehicle front

JPBIA4453ZZ

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CO-12

< PERIODIC MAINTENANCE >

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RADIATOR

RADIATOR

RADIATOR CAP

RADIATOR CAP : Inspection

INFOID:0000000009749829

• Check valve seat (A) of radiator cap. 

- Check that valve seat is swollen to the extent that the edge of the

plunger cannot be seen when watching it vertically from the top.

- Check that valve seat has no soil and damage.

• Pull negative-pressure valve to open it, and that it close completely

when released.

- Check that there is no dirt or damage on the valve seat of radiator

cap negative-pressure valve. 

- Check that there are no unusualness in the opening and closing

conditions of negative-pressure valve.

• Check radiator cap relief pressure.

- When connecting radiator cap to the radiator cap tester (commer-

cial service tool) (A) and the radiator cap tester adapter (commer-
cial service tool) (B), apply engine coolant to the cap seal surface. 

• Replace radiator cap if there is an unusualness related to the above three.

CAUTION:

When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.

RADIATOR

RADIATOR : Inspection

INFOID:0000000009749830

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

CAUTION:

• Be careful not to bend or damage radiator fins.
• When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan

assembly and horns. Then tape harness and harness connectors to prevent water from entering.

1.

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

2.

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

3.

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

B : Metal plunger

JPBIA0108ZZ

SMA967B

Standard and Limit

: Refer to 

CO-27, "Radiator"

.

PBIC5122J

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RADIATOR

CO-13

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4.

Blow air into the back side of radiator core vertically downward.
• Use compressed air lower than 490 kPa (4.9 bar, 5 kg/cm

2

, 71 psi) and keep distance more than 30 cm

(11.81 in). 

5.

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

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CO-14

< REMOVAL AND INSTALLATION >

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RADIATOR

REMOVAL AND INSTALLATION

RADIATOR

Exploded View

INFOID:0000000009749831

Removal and Installation

INFOID:0000000009749832

REMOVAL

WARNING:

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

coolant escaping from engine cooling system. 

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

sure. Then turn it all the way.

NOTE:

1.

Cooling fan assembly

2.

Mounting rubber (upper)

3.

Radiator 

4.

Mounting rubber (lower)

5.

O-ring

6.

Drain plug

7.

Clamp

8.

Radiator hose (lower) (LH)

9.

Reservoir tank hose

10. Reservoir tank 

11.

Reservoir tank cap

12. Clamp

13. Radiator hose (upper) 

14. Water outlet adaptor

15. Radiator cap

16. Radiator hose pipe

17. Bracket

18. Radiator hose (lower) (RH)

A.

To water outlet

B.

To water inlet

 : N·m (kg-m, in-lb)

 : Always replace after every disassembly.

 : Indicates that the parts is connected at points with symbols in actual vehicle.

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RADIATOR

CO-15

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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-8, "Draining"

.

CAUTION:

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

2.

Remove engine cover. Refer to 

EM-24, "Exploded View"

.

3.

Remove engine under cover.

4.

Remove radiator hose (upper and lower).

5.

Remove front bumper. Refer to 

EXT-12, "Exploded View"

.

6.

Remove radiator core support upper. Refer to 

DLK-134, "Removal and Installation"

 (With Intelligent Key)

or 

DLK-257, "Removal and Installation"

 (Without Intelligent Key).

7.

Disconnect cooling fan harness connector.

8.

Remove reservoir tank.

9.

Remove cooling fan assembly.

CAUTION:

Never damage or scratch the radiator core.

10. Remove condenser from radiator and temporarily fasten it on vehicle with a rope.
11. Pull up and remove the radiator assembly (1).

CAUTION:

Never damage radiator core and condenser assembly core.

INSTALLATION

CAUTION:

Do not reuse O-rings.
Note the following, and install in the reverse order of removal.
NOTE:
• Insert the radiator hose (1) all the way to the stopper (2) or by 33 mm (1.30 in) (hose without a stopper).

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

JPBIA4455ZZ

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

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CO-16

< REMOVAL AND INSTALLATION >

[MR16DDT ]

RADIATOR

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

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

line (A) must be within 

±

15

°

 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:0000000009749833

INSPECTION AFTER INSTALLATION

Radiator hose (lower) (RH)

Radiator side

Upper

C

Engine side

Front side

D

Radiator hose (lower) (LH)

Radiator side

Rear side

E

Engine side

Rear side

F

Radiator hose

Hose end

Paint mark

Position of hose clamp*

G.

View G

h.

45

°

: Vehicle upper

JPBIA4375ZZ

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Dimension “A”

3 mm (0.12 in)

JPBIA4374ZZ

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RADIATOR

CO-17

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• 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-8, "Inspection"

.

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

Revision: 2013 October

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CO-18

< REMOVAL AND INSTALLATION >

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COOLING FAN

COOLING FAN

Exploded View

INFOID:0000000009749834

Removal and Installation

INFOID:0000000009749835

REMOVAL

1.

Drain engine coolant. Refer to 

CO-8, "Draining"

.

CAUTION:

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

2.

Remove engine cover. 

3.

Remove front bumper. Refer to 

EXT-12, "Exploded View"

.

4.

Remove radiator core support upper. Refer to 

DLK-134, "Removal and Installation"

 (With Intelligent Key)

or 

DLK-257, "Removal and Installation"

 (Without Intelligent Key).

5.

Disconnect cooling fan harness connector.

6.

Remove reservoir tank. Refer to 

CO-14, "Exploded View"

. 

7.

Remove radiator hose (upper). Refer to 

CO-14, "Exploded View"

.

8.

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 

EC-531, "Component Function Check"

.

1.

Fan motor

2.

Fan shroud

3.

Cooling fan

A.

Apply on fan motor shaft

 : N·m (kg-m, in-lb)

 

: Apply genuine high strength thread locking sealant or equivalent.

JPBIA4337GB

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COOLING FAN

CO-19

< REMOVAL AND INSTALLATION >

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Disassembly and Assembly

INFOID:0000000009749836

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:0000000009749837

INSPECTION AFTER DISASSEMBLY

Cooling Fan

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

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CO-20

< REMOVAL AND INSTALLATION >

[MR16DDT ]

WATER PUMP

WATER PUMP

Exploded View

INFOID:0000000009749838

Removal and Installation

INFOID:0000000009749839

REMOVAL

1.

Drain engine coolant from radiator. Refer to 

CO-8, "Draining"

.

CAUTION:

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

2.

Steer front wheel to the right.

3.

Remove front fender protector (RH). Refer to 

EXT-27, "Exploded View"

.

4.

Remove drive belt. Refer to 

EM-18, "Exploded View"

.

5.

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

CAUTION:

• Handle 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.

Inspection

INFOID:0000000009749840

INSPECTION AFTER REMOVAL

1.

Gasket

2.

Water pump

 : N·m (kg-m, ft-lb)

 : Always replace after every disassembly.

JPBIA4338GB

Revision: 2013 October

2014 JUKE