ECU NISSAN CUBE 2014 3.G Repair Manual

8-2Maintenance and do-it-yourself
Some day-to-day and regular maintenance is
essential to maintain your vehicle good mechan-
ical condition, as well as its emission and engine
performance.
It is the owner’s responsibility to make sure that
the scheduled maintenance, as well as general
maintenance, is performed.
As the vehicle owner, you are the only one who
can ensure that your vehicle receives the proper
maintenance care. You are a vital link in the
maintenance chain.
SCHEDULED MAINTENANCE
For your convenience, both required and op-
tional scheduled maintenance items are de-
scribed and listed in your “NISSAN Service and
Maintenance Guide”. You must refer to that
guide to ensure that necessary maintenance is
performed on your vehicle at regular intervals.
GENERAL MAINTENANCE
General maintenance includes those items
which should be checked during normal day-
to-day operation. They are essential for proper
vehicle operation. It is your responsibility to
perform these procedures regularly as pre-
scribed.
Performing general maintenance checks re-
quires minimal mechanical skill and only a few
general automotive tools.These checks or inspections can be done by
yourself, a qualified technician or, if you prefer, a
NISSAN dealer.
WHERE TO GO FOR SERVICE
If maintenance service is required or your vehicle
appears to malfunction, have the systems
checked and serviced by a NISSAN dealer.
NISSAN technicians are well-trained specialists
and are kept up-to-date with the latest service
information through technical bulletins, service
tips, and in-dealership information systems.
They are completely qualified to work on
NISSAN vehicles
beforework begins.
You can be confident that a NISSAN dealer’s
service department performs the best job to
meet the maintenance requirements on your
vehicle. During the normal day-to-day operation of the
vehicle, general maintenance should be per-
formed regularly as prescribed in this section. If
you detect any unusual sounds, vibrations or
smell, be sure to check for the cause or have a
NISSAN dealer do it promptly. In addition, you
should notify a NISSAN dealer if you think that
repairs are required.
When performing any checks or maintenance
work, see “Maintenance precautions” (P.8-5) .
EXPLANATION OF MAINTENANCE
ITEMS
Additional information on the following
items with “*” is found later in this section.
Outside the vehicle
The maintenance items listed here should be
performed from time to time, unless otherwise
specified.
Doors and engine hood:
Check that all doors
and the engine hood operate properly. Also
ensure that all latches lock securely. Lubricate
hinges, latches, latch pins, rollers and links if
necessary. Make sure that the secondary latch
keeps the hood from opening when the primary
latch is released.
When driving in areas using road salt or other
corrosive materials, check lubrication frequently.
MAINTENANCE REQUIREMENT GENERAL MAINTENANCE

Lights*:Clean the headlights on a regular basis.
Make sure that the headlights, stop lights, tail
lights, turn signal lights, and other lights are all
operating properly and installed securely. Also
check headlight aim.
Road wheel nuts (lug nuts)*: When checking
the tires, make sure no wheel nuts are missing,
and check for any loose wheel nuts. Tighten if
necessary.
Tire rotation*: Tires should be rotated every
5,000 miles (8,000 km) .
Tires*: Check the pressure with a gauge often
and always prior to long distance trips. If
necessary, adjust the pressure in all tires,
including the spare, to the pressure specified.
Check carefully for damage, cuts or excessive
wear.
Tire Pressure Monitoring System (TPMS)
transmitter components: Replace the TPMS
transmitter grommet seal, valve core and cap
when the tires are replaced due to wear or age.
Wheel alignment and balance: If the vehicle
should pull to either side while driving on a
straight and level road, or if you detect uneven or
abnormal tire wear, there may be a need for
wheel alignment.
If the steering wheel or seat vibrates at normal
highway speeds, wheel balancing may be
needed. For additional information regarding tires, refer
to “Important Tire Safety Information” in the
Warranty Information Booklet.
Windshield:
Clean the windshield on a regular
basis. Check the windshield at least every six
months for cracks or other damage. Have a
damaged windshield repaired by a qualified
repair facility.
Windshield wiper blades*: Check for cracks
or wear if they do not wipe properly.
Inside the vehicle
The maintenance items listed here should be
checked on a regular basis, such as when
performing scheduled maintenance, cleaning
the vehicle, etc.
Accelerator pedal: Check the pedal for
smooth operation and make sure the pedal
does not catch or require uneven effort. Keep
the floor mat away from the pedal.
Brake pedal: Check the pedal for smooth
operation. If the brake pedal suddenly goes
down further than normal, the pedal feels
spongy or the vehicle seems to take longer to
stop, see a NISSAN dealer immediately. Keep
the floor mat away from the pedal.
Brakes: Check that the brakes do not pull the
vehicle to one side when applied. Continuously Variable Transmission (CVT)
P (Park) position mechanism:
On a fairly
steep hill, check that the vehicle is held securely
with the shift lever in the P (Park) position
without applying any brakes.
Parking brake: Check the parking brake
operation regularly. The vehicle should be
securely held on a fairly steep hill with only the
parking brake applied. If the parking brake needs
adjusted, see a NISSAN dealer.
Seat belts: Check that all parts of the seat belt
system (for example, buckles, anchors, adjusters
and retractors) operate properly and smoothly,
and are installed securely. Check the belt
webbing for cuts, fraying, wear or damage.
Seats: Check seat position controls such as
seat adjusters, seatback recliners, etc. to ensure
they operate smoothly and that all latches lock
securely in every position. Check that the head
restraints move up and down smoothly and that
the locks (if so equipped) hold securely in all
latched positions.
Steering wheel: Check for changes in the
steering conditions, such as excessive free play,
hard steering or strange noises.
Warning lights and chimes: Make sure that
all warning lights and chimes are operating
properly.
Maintenance and do-it-yourself8-3

When performing any inspection or mainte-
nance work on your vehicle, always take care
to prevent serious accidental injury to yourself or
damage to the vehicle. The following are general
precautions which should be closely observed.
WARNING
.Park the vehicle on a level surface,
apply the parking brake securely
and block the wheels to prevent
the vehicle from moving. Move the
shift lever to the P (Park) position
(CVT model) or the shift lever to the
N (Neutral) position (MT model) .
. Be sure the ignition switch is in the
OFF or LOCK position when per-
forming any parts replacement or
repairs.
. If you must work with the engine
running, keep your hands, clothing,
hair and tools away from moving
fans, belts and any other moving
parts.
. It is advisable to secure or remove
any loose clothing and remove any
jewelry, such as rings, watches, etc.
before working on your vehicle. .
Always wear eye protection when-
ever you work on your vehicle.
. If you must run the engine in an
enclosed space such as a garage, be
sure there is proper ventilation for
exhaust gases to escape.
. Never get under the vehicle while it
is supported only by a jack. If it is
necessary to work under the vehicle,
support it with safety stands.
. Keep smoking materials, flame and
sparks away from fuel tank and the
battery.
. The fuel filter or fuel lines should be
serviced by a NISSAN dealer be-
cause the fuel lines are under high
pressure even when the engine is
off.
CAUTION
.Do not work under the hood while
the engine is hot. Turn the engine
off and wait until it cools down.
. Avoid direct contact with used en-
gine oil and coolant. Improperly
disposed engine oil, and engine coolant and/or other vehicle fluids
can damage the environment. Al-
ways conform to local regulations
for disposal of vehicle fluid.
. Never leave the engine or the CVT
related component harnesses dis-
connected while the ignition switch
is in the ON position.
. Never connect or disconnect the
battery or any transistorized com-
ponent while the ignition switch is
in the ON position.
. Your vehicle is equipped with an
automatic engine cooling fan. It may
come on at any time without warn-
ing, even if the ignition key is in the
OFF position and the engine is not
running. To avoid injury, always
disconnect the negative battery
cable before working near the fan.
This “8. Maintenance and do-it-yourself” section
gives instructions regarding only those items
which are relatively easy for an owner to perform.
A genuine NISSAN Service Manual is also
available. (See “Owner’s Manual/Service Man-
ual order information” (P.9-20).)
You should be aware that incomplete or
Maintenance and do-it-yourself8-5
MAINTENANCE PRECAUTIONS

SDI2394
Removing the resonator
Remove the resonator*Aif necessary. Pull the
resonator upward to remove it. Install the
resonator securely after any inspection or
maintenance work is performed. The engine cooling system is filled at the factory
with a pre-diluted mixture of 50% Genuine
NISSAN Long Life Antifreeze/Coolant (blue) and
50% water to provide year-round anti-freeze
and coolant protection. The antifreeze solution
contains rust and corrosion inhibitors. Additional
engine cooling system additives are not neces-
sary.
WARNING
.
Never remove the radiator or cool-
ant reservoir cap when the engine is
hot. Wait until the engine and
radiator cool down. Serious burns
could be caused by high pressure
fluid escaping from the radiator.
See precautions in “If your vehicle
overheats” (P.6-12) of this manual.
. The radiator is equipped with a
pressure type radiator cap. To pre-
vent engine damage, use only a
genuine NISSAN radiator cap.
CAUTION
.Never use any cooling system ad-
ditives such as radiator sealer. Ad- ditives may clog the cooling system
and cause damage to the engine,
transmission and/or cooling sys-
tem.
. When adding or replacing coolant,
be sure to use only Genuine
NISSAN Long Life Antifreeze/Cool-
ant (blue) or equivalent. Genuine
NISSAN Long Life Antifreeze/Cool-
ant (blue) is pre-diluted to provide
antifreeze protection to −348 F
(−378C) . If additional freeze protec-
tion is needed due to weather where
you operate your vehicle, add Gen-
uine NISSAN Long Life Antifreeze/
Coolant (blue) concentrate follow-
ing the directions on the container.
If an equivalent coolant other than
Genuine NISSAN Long Life Anti-
freeze/Coolant (blue) is used, fol-
low the coolant manufacturer’s
instructions to maintain minimum
antifreeze protection to −348 F
(−378C) . The use of other types of
coolant solutions other than Genu-
ine NISSAN Long Life Antifreeze/
Coolant (blue) or equivalent may
damage the engine cooling system.
Maintenance and do-it-yourself8-7
ENGINE COOLING SYSTEM

8-8Maintenance and do-it-yourself
.The life expectancy of the factory-fill
coolant is 105,000 miles (168,000
km) or 7 years. Mixing any other
type of coolant other than Genuine
NISSAN Long Life Antifreeze/Cool-
ant (blue) , including Genuine
NISSAN Long Life Antifreeze/Cool-
ant (green) , or the use of non-
distilled water will reduce the life
expectancy of the factory-fill cool-
ant. Refer to the NISSAN Service
and Maintenance Guide for more
details.
SDI2385
CHECKING ENGINE COOLANT LEVEL
Check the coolant level in the reservoir when
the engine is cold. If the coolant level is below
the MIN level
*2, open the reservoir cap and
add coolant up to the MAX level
*1. If the
reservoir is empty, check the coolant level in the
radiator when the engine is cold. If there is
insufficient coolant in the radiator, fill the radiator
with coolant up to the filler opening and also add
it to the reservoir up to the MAX level
*1.
Tighten the cap securely after adding engine
coolant.
If the cooling system frequently requires
coolant, have it checked by a NISSAN
dealer.
CHANGING ENGINE COOLANT
Major cooling system repairs should be per-
formed by a NISSAN dealer. The service
procedures can be found in the appropriate
NISSAN Service Manual.
Improper servicing can result in reduced
heater performance and engine overheat-
ing.
WARNING
. To avoid the danger of being
scalded, never change the coolant
when the engine is hot.
. Never remove the radiator cap when
the engine is hot. Serious burns
could be caused by high pressure
fluid escaping from the radiator.
. Avoid direct skin contact with used
coolant. If skin contact is made,
wash thoroughly with soap or hand
cleaner as soon as possible.
. Keep coolant out of reach of chil-
dren and pets.
Engine coolant must be disposed of properly.
Check your local regulations.

8-10Maintenance and do-it-yourself
SDI1978
1. Oil filler cap
2. Oil drain plug
3. Oil filter
Engine oil and filter
1. Place a large drain pan under the drain plug.
2. Remove the oil filler cap.
3. Remove the drain plug with a wrench andcompletely drain the oil.
CAUTION
Be careful not to burn yourself, as the
engine oil is hot.
.Waste oil must be disposed ofproperly.
.Check your local regulations.
(Perform steps 4 to 8 only when the engine
oil filter change is needed.)
4. Remove the engine under cover under the oil filter location by removing the bolts and
small plastic clips.
5. Loosen the oil filter with an oil filter wrench. Remove the oil filter by turning it by hand.
6. Wipe the engine oil filter mounting surface with a clean rag.
CAUTION
Be sure to remove any old gasket
material remaining on the mounting
surface of the engine. Failure to do so
could lead to engine damage.
7. Coat the gasket on the new filter with clean engine oil.
8. Screw in the oil filter clockwise until a slight resistance is felt, then tighten additionally
more than 2/3 turn.
Oil filter tightening torque:
11 to 15 ft-lb
(14.7 to 20.5 N·m) 9. Clean and re-install the drain plug with a
new washer. Securely tighten the drain plug
with a wrench.
Drain plug tightening torque:22 to 29 ft-lb
(29 to 39 N·m)
Do not use excessive force.
10. Refill the engine with the recommended oil through the oil filler opening, and install the
oil filler cap securely.
See “Capacities and recommended fuel/
lubricants” (P.9-2) for drain and refill capa-
city. The drain and refill capacity depends on
the oil temperature and drain time. Use
these specifications for reference only. Al-
ways use the dipstick to determine the
proper amount of oil in the engine.
11. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required.
12. Turn the engine off and wait more than 10 minutes. Check the oil level with the dipstick.
Add engine oil if necessary.

conditions require an increased amount of
window washer fluid.
Recommended fluid: Genuine NISSAN Wind-
shield Washer Concentrate Cleaner & Anti-
freeze or equivalent
CAUTION
.Do not substitute engine anti-freeze
coolant for window washer solution.
This may result in damage to the
paint.
. Do not fill the window washer
reservoir tank with washer fluid
concentrates at full strength. Some
methyl alcohol based washer fluid
concentrates may permanently stain
the grille if spilled while filling the
window washer reservoir tank.
. Pre-mix washer fluid concentrates
with water to the manufacturer’s
recommended levels before pouring
the fluid into the window washer
reservoir tank. Do not use the
window washer reservoir tank to
mix the washer fluid concentrate
and water. .
Keep the battery surface clean and dry.
Clean the battery with a solution of baking
soda and water.
. Make certain the terminal connections are
clean and securely tightened.
. If the vehicle is not to be used for 30 days or
longer, disconnect the negative 7battery
terminal cable to prevent discharging it.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of electro-
nic accessories that consume battery
power when the engine is not running
(Phone chargers, GPS, DVD players,
etc.)
2. Vehicle is not driven regularly and/or
only driven short distances.
In these cases, the battery may need to be
charged to maintain battery health.
WARNING
. Do not expose the battery to flames
or electrical sparks. Hydrogen gas
generated by the battery is explo-
sive. Do not allow battery fluid to contact your skin, eyes, fabrics or
painted surfaces. After touching a
battery or battery cap, do not touch
or rub your eyes. Thoroughly wash
your hands. If the acid contacts your
eyes, skin or clothing, immediately
flush with water for at least 15
minutes and seek medical attention.
. Do not operate the vehicle if the
fluid in the battery is low. Low
battery fluid can cause a higher load
on the battery which can generate
heat, reduce battery life, and in
some cases lead to an explosion.
. When working on or near a battery,
always wear suitable eye protection
and remove all jewelry.
. Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands after
handling.
. Keep the battery out of the reach of
children.
Maintenance and do-it-yourself8-13
BATTERY

8-16Maintenance and do-it-yourself
WARNING
Be sure the engine and ignition switch
are off and that the parking brake is
engaged securely.
CAUTION
Be sure to use the correct socket to
remove the spark plugs. An incorrect
socket can damage the spark plugs.
SDI2020
REPLACING SPARK PLUGS
If replacement is required, see a NISSAN dealer
for servicing.
Iridium-tipped spark plugs
It is not necessary to replace the iridium-tipped
spark plugs as frequently as the conventional
type spark plugs since they will last much longer.
Follow the maintenance log shown in the
“NISSAN Service and Maintenance Guide”. Do
not reuse the iridium-tipped spark plugs by
cleaning or regapping.
Always replace spark plugs with recom-
mended or equivalent ones.
SDI2106
To remove the air cleaner filter, push the tabs*1and pull the filter upward*2.
The air cleaner filter should not be cleaned and
reused. Replace it according to the maintenance
shown in the “NISSAN Service and Mainte-
nance Guide”. When replacing the filter, wipe
the inside of the air cleaner housing and the
cover with a damp cloth.
WARNING
. Operating the engine with the air
cleaner removed can cause you or
others to be burned. The air cleaner
not only cleans the air, it stops
SPARK PLUGS AIR CLEANER

CAUTION
Be careful not to allow children to
swallow the battery and removed parts.
SDI2134
KEYFOB
Replace the battery in the keyfob as follows:
1. Remove the screw.
2. Insert a small screwdriver into the slit of thecorner and twist it to separate the upper part
from the lower part. Use a cloth to protect the casing.
3. Replace the battery with a new one.
Recommended battery:
CR1620 or equivalent
.Do not touch the internal circuit andelectric terminals as doing so could
cause a malfunction.
.Hold the battery by the edges. Holdingthe battery across the contact points will
seriously deplete the storage capacity.
.Make sure that the +side faces the
bottom of the case.
4. Close the lid securely and install the screw.
5. Operate the buttons to check its operation.
See a NISSAN dealer if you need any assistance
for replacement.
FCC Notice:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference that
may cause undesired operation.
NOTE:
Changes or modifications not expressly
approved by the party responsible for
Maintenance and do-it-yourself8-23
KEY BATTERY REPLACEMENT

SDI2452
4. Align the tips of the upper and lower parts
*1, and then push them together*2until it
is securely closed.
5. Operate the buttons to check its operation.
See a NISSAN dealer if you need any assistance
for replacement.
FCC Notice:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference that
may cause undesired operation. NOTE:
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
Maintenance and do-it-yourself8-25