Nissan Juke (2016 year). Service Repair Manual — part 94

RADIATOR

CO-37

< BASIC INSPECTION >

[MR EXCEPT FOR NISMO RS MODELS]

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BASIC INSPECTION

RADIATOR

Cleaning the Radiator

INFOID:0000000012197552

Check radiator for mud or clogs, and follow the procedure below to remove any that are found.

CAUTION:

• Never bend or damage radiator fin.

• When cleaning radiator mounted to the vehicle, remove surrounding parts such as cooling fan

assembly and horn. Cover harnesses and connectors with tape, never expose those parts to water.

1. Flush with water vertically by hose from back of radiator.

• Repeat cleaning. Be careful not to wash continuously with water at the same location.

2. Clean dirt from radiator completely.
3. Blow-dry vertically from back of radiator with compressed air.

CAUTION:

Blow-dry from a location 30 cm or more away from radiator, using a pressure of less than
0.49 MPa (5 kg/cm

2

).

• Do not blow-dry continuously at the same location. Continue blow-drying until there is no water.

Revision: November 2015

2016 JUKE

CO-38

< SYMPTOM DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

OVERHEATING CAUSE ANALYSIS

SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Diagnosis Chart by Symptom

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Symptom

Inspection item

Cooling sys-
tem mal-
functions

Poor heat radiation

Water pump malfunction

Drive belt looseness or
wear

—

Multi-way control valve is
stuck closed.

—

Damage of radiator fins

Clogging by mud or foreign
substance

Physical damage

Clogged radiator hose

Foreign substance intru-
sion (corrosion, mud, sand,
etc.)

Reduced cooling airflow

Cooling fan does not oper-
ate

Cooling fan assembly

—

Poor cooling fan rotation

Damage of cooling fan

Damage of radiator shroud

—

—

—

Incorrect LLC concentra-
tion

—

—

—

Deteriorated coolant

—

LLC concentration

—

Low coolant level

Coolant leakage

Radiator hose

Loose hose clamps

Cracks and fractures of
hose

Water pump

Poor seal

Radiator cap

Looseness

Poor seal

Radiator

Damage, deterioration, or
poor installation of O-ring

Cracks and fractures of ra-
diator tank

Cracks and fractures of ra-
diator core

Reservoir tank

Cracking of reservoir tank
cap

Overflow of coolant from
the reservoir tank

Entry of combustion gas
into the cooling system

Cylinder head distortion

Deterioration of cylinder
head gasket

Revision: November 2015

2016 JUKE

OVERHEATING CAUSE ANALYSIS

CO-39

< SYMPTOM DIAGNOSIS >

[MR EXCEPT FOR NISMO RS MODELS]

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Malfunction
other than
the cooling
system

—

Engine overload

High-load driving

High engine speed with no
load

Driving in low gear for a
long period of time

Extreme continuous high-
speed driving

Power train system mal-
function

—

Size of installed wheel or
tire

Dragging of brakes

Ignition timing

Obstruction of outside air
inflow

Blocked bumper opening

—

—

Blocked radiator grille

Installation of bumper cov-
er

Blocked by mud or foreign
substance

Clogged radiator fins

—

Clogged condenser fan

Obstruction of outside air
inflow path

Blocked due to installation
of fog lamps

Symptom

Inspection item

Revision: November 2015

2016 JUKE

CO-40

< PERIODIC MAINTENANCE >

[MR EXCEPT FOR NISMO RS MODELS]

ENGINE COOLANT

PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

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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-11, "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:

If a case that engine coolant decreases, replenish radiator with engine coolant.

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

Draining and Filling

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CAUTION:

• Never apply additive agent like anti-leakage sealant. Doing so may cause coolant passage clog.

• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality

mixed with water (distilled or demineralized). Refer to

MA-11, "Fluids and Lubricants"

.

• Never dilute using water.

DRAINING

WARNING:

Never open the radiator cap or drain plug when the engine is hot. Hot liquid may spray out, causing

serious injury.

CAUTION:

• Never spill coolant on the drive belt while working.

• Be sure to perform this operation when coolant temperature is cold.

1. Turn the ignition switch ON, wait for 10 seconds or more, and then turn it OFF again.
2. Connect drain hose.

A : MAX
B : MIN

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Testing pressure: Refer to

CO-58, "Radiator"

.

PBIC5121J

Revision: November 2015

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ENGINE COOLANT

CO-41

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[MR EXCEPT FOR NISMO RS MODELS]

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• Use a general-purpose hose with the dimensions show in the

figure.

3. 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-287, "Disassembly

and Assembly"

.

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

Refer to

CO-46, "Exploded View"

.

5. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,

flush the engine cooling system. Refer to

CO-44, "Flushing"

.

6. Disconnect drain hose.

REFILLING

1. Install reservoir tank. Refer to

CO-46, "Exploded View"

.

2. Install the radiator drain plug.

• Replace the drain plug O-ring with a new one.

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-287, "Disas-

sembly and Assembly"

.

3. Check that each hose clamp is firmly tightened.
4. Remove the cowl top extension. Refer to

EXT-30, "Removal and Installation"

.

5. Perform the following procedure for draining the air from piping.

If using CONSULT

1. Turn the ignition switch ON again and use CONSULT “WORK SUPPORT” mode to perform “ENGINE

COOLANT BYPASS VALVE”. Refer to

EC-667, "CONSULT Function"

.

CAUTION:

Never start engine.

NOTE:

CONSULT can be used to open the bypass valve on the multi-way control valve.

A

:

φ

8 mm (0.31 in)

B

: 300 mm (11.81 in)

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: Vehicle front

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Radiator drain plug

: Refer to

CO-46, "Exploded View"

.

Revision: November 2015

2016 JUKE

CO-42

< PERIODIC MAINTENANCE >

[MR EXCEPT FOR NISMO RS MODELS]

ENGINE COOLANT

2. Separate the hose clamp (1) and heater hose (2) at the

position shown in the figure (

), and hold the end of the

hose at the same height.

3. Fill with coolant at a speed of 3 L/min or less (like pouring

water with a kettle) until it fills the radiator cap (1) neck.

-

If coolant comes out from the heater hose when filling with

coolant, connect the heater hose and continue filling with

coolant.

CAUTION:

•

Filling with coolant at a high speed may allow air to

mix with coolant. Be sure to fill with coolant slowly,

observing the above speed.

•

Never spill coolant on any electrical equipment (such

as the alternator) during the operation.

When not using CONSULT

1. Separate the hose clamp (1) and heater hose (2) at the

position as shown in the figure (

), and hold the end of the

hose at the same height.

2. Fill with coolant at a speed of 3 L/min or less (like pouring

water with a kettle) until it fills the radiator cap (1) neck.

-

If coolant comes out from the heater hose while adding

coolant, connect the heater hose and continue adding cool-

ant.

CAUTION:

•

Filling with coolant at a high speed may allow air to

mix with coolant. Be sure to fill with coolant slowly,

observing the above speed.

•

Never spill coolant on any electrical equipment (such

as the alternator) during the operation.

: Vehicle front

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Revision: November 2015

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ENGINE COOLANT

CO-43

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6. Fill with coolant to "MAX" line of reservoir tank.

7. Install the cowl top extension. Refer to

EXT-30, "Removal and Installation"

.

8. Install the radiator cap.
9. Perform the following operation for warming up the engine.

When using CONSULT

1. Start the engine, and set the heater control temperature to "FULL HOT".

2. Use CONSULT “WORK SUPPORT” mode to perform “ENGINE COOLANT BYPASS VALVE”. Refer

to

EC-667, "CONSULT Function"

.

NOTE:

CONSULT can be used to open the bypass valve on the multi-way control valve.

-

Check that there is no coolant leakage from the drain plug and heater hose connections.

When not using CONSULT

1. Start the engine and set the heater control temperature to "FULL HOT".

2. Warm up the engine until the bypass valve on the multi-way control valve opens. The warm-up time

should be approximately 10 minutes at 3,000 rpm.

-

Check that the bypass valve on the multi-way control valve is open by touching the radiator hose

(lower) with a hand and checking that warm water is flowing.

CAUTION:

Be careful that coolant does not overheat.

-

Check that there is no coolant leakage from the drain plug and heater hose connections.

10. Stop the engine.
11. When the engine is cold (approximately 50

°

C or less), remove the radiator cap and check the coolant

level. If the level is low, fill with coolant again until it fills the radiator cap neck, and then repeat operation

from step 7.

CAUTION:

Never spill coolant on any electrical equipment (such as the alternator) during the operation.

12. When the coolant level stabilizes, fill with coolant up to the "MAX" line of reservoir tank.

CHECK WATER FLOW SOUND

CAUTION:

Prior to check, be sure to close windows, doors, and hood, and turn off radio and other electrical

loads.

1. Allow the engine to cool (to approximately 50

°

C or less).

2. Set the temperature of the heater control to "FULL HOT".
3. Start engine. Perform the following cycle three times. Keep the engine speed at 1,000 rpm for approxi-

mately 30 seconds and then increase it gradually to 3,000 rpm.

4. During the operation described above in step 3, check for water flow sound from heater core.
5. If water flow sounds are heard, fill with coolant to the radiator cap neck at a speed of 3 L/min or less (like

pouring water with a kettle), and then repeat the operations from step 7 of "Filling Engine Coolant" to step

4 of "How to Check Water Flow Sound".

CAUTION:

• Filling with coolant at a high speed may allow air to mix with coolant. Be sure to fill with coolant

slowly, observing the speed specified above.

• Never spill coolant on any electrical equipment (such as the alternator) during the operation.

A

: MAX

B

: MIN

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Revision: November 2015

2016 JUKE

CO-44

< PERIODIC MAINTENANCE >

[MR EXCEPT FOR NISMO RS MODELS]

ENGINE COOLANT

Flushing

INFOID:0000000012197556

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-72, "Setting"

.

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

EM-

27, "Exploded View"

.

3. Disconnect vacuum hose break booster side, and remove vacuum tube from clamp.
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 overflows 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-27,

"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-40, "Draining and Filling"

.

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

Radiator drain plug

: Refer to

CO-46, "Exploded View"

.

: Vehicle front

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Revision: November 2015

2016 JUKE