Qashqai J11. Engine cooling system — part 4

CO-50

< REMOVAL AND INSTALLATION >

[MR20DD]

WATER PUMP

• Check visually that there is no significant dirt or rusting on water

pump body and vane

.

• Check that there is no looseness in vane shaft, and that it turns

smoothly when rotated by hand.

• Replace water pump, if necessary.

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-38, "Inspection"

.

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

PBIC3313J

THERMOSTAT

CO-51

< REMOVAL AND INSTALLATION >

[MR20DD]

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THERMOSTAT

Exploded View

INFOID:0000000010665088

Removal and Installation

INFOID:0000000010665089

REMOVAL

1.

Drain engine coolant from radiator. Refer to

CO-38, "Draining"

.

CAUTION:

Perform this step when engine is cold.

2.

Disconnect radiator hose (lower) from water inlet.

3.

Remove water inlet and thermostat.
• Engine coolant leakage from cylinder block, so have a receptacle ready below.

4.

Disconnect the battery cable from the negative terminal. Refer to

PG-154, "Exploded View"

.

5.

Remove thermostat housing with the following procedure:

a.

Remove water pump. Refer to

CO-49, "Exploded View"

.

b.

Remove alternator. Refer to

CHG-52, "MR20DD : Removal and Installation"

.

c.

Remove A/C compressor with A/C piping connected, and temporarily fasten it on vehicle with a rope.
Refer to

HA-31, "Exploded View"

(Type 1),

HA-74, "Exploded View"

(Type 2),

HA-121, "Exploded View"

(Type 3) or

HA-169, "Exploded View"

(Type 4).

d.

Remove water hoses.

e.

Remove thermostat housing.

Thermostat housing

Gasket

Rubber ring

Thermostat

Water inlet

To oil cooler

To radiator

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

JSBIA4314GB

CO-52

< REMOVAL AND INSTALLATION >

[MR20DD]

THERMOSTAT

INSTALLATION

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

Thermostat

• Install thermostat with making rubber ring

groove fit to thermo-

stat flange

with the whole circumference.

• Install thermostat

with jiggle valve

facing upwards.

Inspection

INFOID:0000000010665090

INSPECTION AFTER REMOVAL

Thermostat

• Place a thread

so that it is caught in the valves of thermostat

.

Immerse fully in a container

filled with water. Heat while stirring.

• The valve opening temperature is the temperature at which the

valve opens and falls from the thread.

• Continue heating. Check the full open valve lift amount.
• After checking the maximum valve lift amount, lower the water

temperature and check the valve closing temperature.

• If out of the standard, replace thermostat.

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-38, "Inspection"

.

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

JPBIA5191ZZ

: Thermostat housing

PBIC3548J

Standard: Refer to

CO-56, "Thermostat"

.

PBIC3314J

WATER OUTLET

CO-53

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WATER OUTLET

Exploded View

INFOID:0000000010665091

Removal and Installation

INFOID:0000000010665092

REMOVAL

1.

Drain engine coolant from radiator. Refer to

CO-38, "Draining"

.

CAUTION:

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

2.

Remove air duct. Refer to

EM-147, "Exploded View"

.

3.

Remove battery. Refer to

PG-155, "Removal and Installation"

.

4.

Remove battery tray. Refer to

PG-154, "Exploded View"

.

5.

Disconnect radiator hose (upper) form water outlet.

6.

Disconnect harness connector from engine coolant temperature sensor.

Water control valve

Rubber ring

Water outlet

Engine coolant temperature sensor

Clamp

Water hose

Water hose

To radiator

To CVT oil warmer (CVT models)

To heater

To heater

: Engine front

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

JPBIA6912GB

CO-54

< REMOVAL AND INSTALLATION >

[MR20DD]

WATER OUTLET

7.

Remove heater hoses

and water hose

(CVT models).

8.

Remove water outlet.

INSTALLATION

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

Water Control Valve

• Install water control valve with making rubber ring

groove fit to

water control valve flange

with the whole circumference.

• Install water control valve

with the arrow

facing up and the

frame center part

facing upwards.

Inspection

INFOID:0000000010665093

INSPECTION AFTER REMOVAL

Water Control Valve

• Place a thread

so that it is caught in the valves of water control

valve

. Immerse fully in a container

filled with water. Heat

while stirring.

• The valve opening temperature is the temperature at which the

valve opens and falls from the thread.

• Continue heating. Check the continuous valve lifting toward maxi-

mum valve lift.
NOTE:
The maximum valve lift amount standard temperature for water
control valve is the reference value.

• After checking the maximum valve lift amount, lower the water

temperature and check the valve closing temperature.

: Water outlet

JPBIA6844ZZ

JPBIA5193ZZ

: Water outlet

JPBIA5194ZZ

PBIC3314J

WATER OUTLET

CO-55

< REMOVAL AND INSTALLATION >

[MR20DD]

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• If out of the standard, replace water control valve.

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-38, "Inspection"

.

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

Standard:

Refer to

CO-56, "Water Control Valve"

.

CO-56

< SERVICE DATA AND SPECIFICATIONS (SDS)

[MR20DD]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Periodical Maintenance Specification

INFOID:0000000010665094

ENGINE COOLANT CAPACITY (APPROXIMATE)

Unit:

(Imp qt)

Radiator

INFOID:0000000010665095

Unit: kPa (bar, kg/cm

2

, psi)

Thermostat

INFOID:0000000010665096

Standard

Water Control Valve

INFOID:0000000010665097

Standard

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

CVT models

7.4 (6-1/2)

M/T models

7.1 (6-1/4)

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)

Valve opening temperature

80.5 - 83.5

°

C (177 - 182

°

F)

Maximum valve lift

8.0 mm/95

°

C (0.315 in/203

°

F)

Valve closing temperature

77

°

C (171

°

F)

Valve opening temperature

93.5 - 96.5

°

C (200 - 206

°

F)

Maximum valve lift

8.0 mm/108

°

C (0.315 in/226

°

F)

Valve closing temperature

90

°

C (194

°

F)

PRECAUTIONS

CO-57

< PRECAUTION >

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PRECAUTION

PRECAUTIONS

Precautions for Removing Battery Terminal

INFOID:0000000010508566

• With the adoption of Auto ACC function, ACC power is automatically supplied by operating the intelligent key

or remote keyless entry or by opening/closing the driver side door. In addition, ACC power is supplied even
after the ignition switch is turned to the OFF position, i.e. ACC power is supplied for a certain fixed time.

• When disconnecting the 12V battery terminal, turn off the ACC

power before disconnecting the 12V battery terminal, observing
“How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignition
switch is turned OFF and ignition power supply is stopped. If the
battery terminal is disconnected before ECU stops, accidental DTC
detection or ECU data damage may occur.

• For vehicles with the 2-batteries, be sure to connect the main bat-

tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
main battery and sub battery disconnected, then DTC may be detected.

• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.

NOTE:
The removal of 12V battery may cause a DTC detection error.

HOW TO DISCONNECT 12V BATTERY TERMINAL

Disconnect 12V battery terminal according to Instruction 1 or Instruction 2 described below.
For vehicles parked by ignition switch OFF, refer to Instruction 2.

INSTRUCTION 1

1.

Open the hood.

2.

Turn key switch to the OFF position with the driver side door opened.

3.

Get out of the vehicle and close the driver side door.

4.

Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse
of the specified time.

CAUTION:

While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.

5.

Remove 12V battery terminal.

CAUTION:

After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

INSTRUCTION 2 (FOR VEHICLES PARKED BY IGNITION SWITCH OFF)

1.

Unlock the door with intelligent key or remote keyless entry.
NOTE:
At this moment, ACC power is supplied.

2.

Open the driver side door.

3.

Open the hood.

4.

Close the driver side door.

5.

Wait at least 3 minutes.

SEF289H

D4D engine

: 20 minutes

HRA2DDT

: 12 minutes

K9K engine

: 4 minutes

M9R engine

: 4 minutes

R9M engine

: 4 minutes

V9X engine

: 4 minutes

CO-58

< PRECAUTION >

[K9K]

PRECAUTIONS

CAUTION:

While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.

6.

Remove 12V battery terminal.

CAUTION:

After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000010416367

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

The vehicle may be equipped with a passenger air bag deactivation switch. Because no rear seat exists where
a rear-facing child restraint can be placed, the switch is designed to turn off the passenger air bag so that a
rear-facing child restraint can be used in the front passenger seat. The switch is located in the center of the
instrument panel, near the ashtray. When the switch is turned to the ON position, the passenger air bag is
enabled and could inflate for certain types of collision. When the switch is turned to the OFF position, the pas-
senger air bag is disabled and will not inflate. A passenger air bag OFF indicator on the instrument panel lights
up when the passenger air bag is switched OFF. The driver air bag always remains enabled and is not affected
by the passenger air bag deactivation switch.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

• The vehicle may be equipped with a passenger air bag deactivation switch which can be operated by

the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled and
will not inflate. When the passenger air bag is switched ON, the passenger air bag is enabled and
could inflate for certain types of collision. After SRS maintenance or repair, make sure the passenger
air bag deactivation switch is in the same position (ON or OFF) as when the vehicle arrived for ser-
vice.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect

INFOID:0000000010416368

NOTE:
• Before removing and installing any control units, first turn the ignition switch to the LOCK position, then dis-

connect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

PRECAUTIONS

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• Always use CONSULT to perform self-diagnosis as a part of each function inspection after finishing work. If

a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.

OPERATION PROCEDURE

1.

Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.

2.

Turn the ignition switch to ACC position.
(At this time, the steering lock will be released.)

3.

Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.

4.

Perform the necessary repair operation.

5.

When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock
when the ignition switch is turned to LOCK position.)

6.

Perform self-diagnosis check of all control units using CONSULT.

Precaution for Liquid Gasket

INFOID:0000000010416369

REMOVAL OF LIQUID GASKET

• After removing the mounting bolts and nuts, separate the mating

surface using a seal cutter and remove the liquid gasket.

CAUTION:

Never damage the mating surfaces.

• In areas where the cutter is difficult to use, use a plastic hammer to

lightly tap the gasket applied area.

CAUTION:

If for some unavoidable reason a tool such as a flat-bladed
screwdriver is used, be careful not to damage the mating sur-
faces.

LIQUID GASKET APPLICATION PROCEDURE

1.

Using a scraper, remove the old liquid gasket adhering to the
gasket application surface and the mating surface.
• Remove the liquid gasket completely from the groove of the

gasket application surface, mounting bolts and bolt holes.

2.

Wipe the gasket application surface and the mating surface with
white gasoline (lighting and heating use) to remove adhering
moisture, grease and foreign materials.

3.

Attach the liquid gasket to the tube presser.
Use Genuine Liquid Gasket or equivalent.

PBIC0275E

PBIC0003E

CO-60

< PRECAUTION >

[K9K]

PRECAUTIONS

4.

Apply the gasket without breaks to the specified location with the
specified dimensions.
• If there is a groove for the liquid gasket application, apply the

gasket to the groove.

• As for the bolt holes, normally apply the gasket inside the

holes. If specified, it should be applied outside the holes. Make
sure to read the instruction in this manual.

• Within five minutes of gasket application, install the mating

component.

• If the liquid gasket protrudes, wipe it off immediately.
• Do not retighten after the installation.
• After 30 minutes or more have passed from the installation, fill

the engine oil and coolant.

CAUTION:

If there are instructions in this manual, observe them.

EMA0622D

SEM159F

PREPARATION

CO-61

< PREPARATION >

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PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000010416370

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

CO-62

< SYSTEM DESCRIPTION >

[K9K]

DESCRIPTION

SYSTEM DESCRIPTION

DESCRIPTION

Cooling Circuit

INFOID:0000000010416371

Refer to

GI-4, "Components"

for symbol marks in the figure.

1.

Reservoir tank

2.

Water pump

3.

Engine

4.

Exhaust gas cooler

5.

Heater core

6.

Bleed screw

7.

Water outlet valve

8.

Heating elements (Thermo plungers) 9.

Thermostat

10. Radiator

11.

Water-oil heat exchanger

E1BIA1149ZZ

OVERHEATING CAUSE ANALYSIS

CO-63

< SYMPTOM DIAGNOSIS >

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SYMPTOM DIAGNOSIS

OVERHEATING CAUSE ANALYSIS

Troubleshooting Chart

INFOID:0000000010416373

Symptom

Check items

Cooling sys-
tem parts
malfunction

Poor heat transfer

Water pump malfunction

Worn timing belt

—

Thermostat stuck closed

—

Damaged fins

Dust contamination or pa-
per clogging

Mechanical 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 coolant mixture
ratio

—

—

—

Poor coolant quality

—

—

—

Insufficient coolant

Coolant leaks

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 leaks into cool-
ing system

Cylinder head deterioration

Cylinder head gasket deteri-
oration

CO-64

< SYMPTOM DIAGNOSIS >

[K9K]

OVERHEATING CAUSE ANALYSIS

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

Powertrain system malfunc-
tion

—

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

—

Installed large fog lamp

Symptom

Check items

ENGINE COOLANT

CO-65

< PERIODIC MAINTENANCE >

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PERIODIC MAINTENANCE

ENGINE COOLANT

Inspection

INFOID:0000000010450830

LEVEL

• Check if the reservoir tank engine coolant level is within the “MIN”

to “MAX” when the engine is cool.

• Adjust the engine coolant level as necessary.
• Check that the reservoir tank cap is tightened.

WARNING:

Never remove reservoir tank cap when engine is hot. Serious
burns could occur from high-pressure engine coolant escaping
from reservoir tank.

LEAKAGE

• To check for leakage, fit the adapter (B) to the reservoir tank, and

then connect it to the reservoir tank cap tester [SST: — (M.S.554-
07)] (A) as shown.

WARNING:

Never remove reservoir tank cap when engine is hot. Serious
burns could occur from high-pressure engine coolant escap-
ing from reservoir tank.

CAUTION:

Higher test pressure than specified may cause radiator dam-
age.

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

Draining

INFOID:0000000010464137

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.

Remove engine under cover.

2.

Remove reservoir tank cap.

3.

Open radiator drain plug (1) of radiator.

CAUTION:

Perform this step when engine is cold.

4.

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

CO-17,

"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-67, "Flushing"

.

Refilling

INFOID:0000000010464138

CAUTION:

E1BIA1145ZZ

Testing pressure: Refer to

CO-106, "Radiator"

.

E1BIA1147ZZ

: Vehicle front

E1BIA1139ZZ