ECU NISSAN LEAF 2016 1.G Repair Manual

Your new NISSAN has been designed to have
minimum maintenance requirements with long
service intervals to save you both time and
money. However, some day-to-day and regular
maintenance is essential to maintain your NISSA-
N’s fine mechanical condition, and its Electric
Vehicle (EV) system performance.
It is the owner’s responsibility to make sure that
the scheduled maintenance, and general mainte-
nance, 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 main-
tenance chain.
SCHEDULED MAINTENANCE
For your convenience, both required and optional
scheduled maintenance items are described and
listed in your “NISSAN Service and Maintenance
Guide”. You must refer to that guide to ensure
that necessary maintenance is performed on your
NISSAN at regular intervals.
GENERAL MAINTENANCE
General maintenance includes those items which
should be checked during normal day-to-day op-
eration. They are essential for proper vehicle op-eration. It is your responsibility to perform these
procedures regularly as prescribed.
Performing general maintenance checks requires
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 certified LEAF 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 certified
LEAF 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 ve-
hicles
before work begins.
You can be confident that a NISSAN certified
LEAF dealer’s service department performs the
best job to meet the maintenance requirements
on your vehicle — in a reliable and economical
way. 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 certified LEAF dealer do it promptly. In
addition, you should notify a NISSAN certified
LEAF dealer if you think that repairs are required.
When performing any checks or maintenance
work, refer to “Maintenance precautions” in this
section.
EXPLANATION OF MAINTENANCE
ITEMS
Additional information on the following
items with “*” is found in this section.
Outside vehicle
The maintenance items listed here should be
performed from time to time, unless otherwise
specified.
Doors and motor hood:
Check that all doors
and the motor hood operate properly. Also en-
sure that all latches lock securely. Lubricate
hinges, latches, latch pins, rollers and links if
necessary. Make sure that the secondary latch
MAINTENANCE REQUIREMENT GENERAL MAINTENANCE
8-2Maintenance and do-it yourself

keeps the motor hood from opening when the
primary latch is released.
When driving in areas using road salt or other
corrosive materials, check lubrication frequently.
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 the aim of the headlights.
Road wheel nuts (lug nuts)*: When checking
the tires, make sure that no wheel nuts are miss-
ing, 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 neces-
sary, adjust the pressure in all tires to the pres-
sure 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
pulls 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” (US) or “Tire
Safety Information” (Canada) in the Warranty In-
formation Booklet.
Windshield: Clean the windshield on a regular
basis. Check the windshield at least every six
months for cracks or other damage. Have a dam-
aged windshield repaired by a qualified repair
facility.
Wiper blades*: Check for cracks or wear if they
do not wipe properly.
Inside vehicle
The maintenance items listed here should be
checked on a regular basis, such as when per-
forming scheduled maintenance, cleaning the ve-
hicle, etc.
Accelerator pedal: Check the pedal for smooth
operation and make sure that the pedal does not catch or require uneven effort. Keep the floor mat
away from the pedal.
Brake pedal:
Check the pedal for smooth op-
eration. 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 certified LEAF 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.
Electric shift P (Park) position mechanism:
On a steep hill, check that the vehicle is held
securely while the vehicle is in the P (Park) posi-
tion without applying the brakes.
Parking brake: Check the parking brake opera-
tion regularly. The vehicle should be securely held
on a steep hill with only the parking brake applied.
If the parking brake cannot keep a vehicle posi-
tion contact a NISSAN certified LEAF dealer.
Seat: Check seat position controls such as the
seat adjusters, seatback recliners, etc. to ensure
that they operate smoothly and that all latches
lock securely in every position. Check that the
head restraints/headrests move up and down
smoothly and that the locks (if so equipped) hold
securely in all latched positions.
Maintenance and do-it yourself8-3

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 web-
bing for cuts, fraying, wear or damage.
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.
Windshield defroster: Check that the air emits
from the defroster outlets properly and in suffi-
cient quantity when operating the heater or air
conditioner.
Windshield wiper and washer*: Check that
the wipers and washers operate properly and
that the wipers do not streak.
Under hood and vehicle
The maintenance items listed here should be
checked periodically.
12-volt battery (for serviceable battery)*:
Check the fluid level in each cell. It should be
between the MAX and MIN lines. Vehicles oper-
ated in high temperatures or under severe condi- tions require frequent checks of the 12–volt bat-
tery fluid level.
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 electronic ac-
cessories 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.
Brake fluid level*: Make sure that the brake
fluid level is between the “MAX” and “MIN” lines
on the reservoir.
Coolant level*: Check the coolant level when
the motor compartment is cold.
Fluid leaks: Check under the vehicle for water
or other fluid leaks after the vehicle has been
parked for a while. Water dripping from the air
conditioner after use is normal. If you should
notice any leaks, check for cause and have it
corrected immediately. Radiator and hoses:
Check the front of the
radiator and clean off any dirt, insects, leaves,
etc., that may have accumulated. Make sure that
the hoses have no cracks, deformation, rot or
loose connections.
Underbody: The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances, other-
wise rust will form on the floor pan and frame. At
the end of winter, the underbody should be thor-
oughly flushed with plain water, being careful to
clean those areas where mud and dirt may accu-
mulate. For additional information, refer to
“Cleaning exterior” in the “Appearance and care”
section of this manual.
Windshield-washer fluid*: Check that there is
an adequate amount of fluid in the reservoir.
8-4Maintenance and do-it yourself

When performing any inspection or maintenance
work on your vehicle, always take care to prevent
serious accidental injury to yourself or damage to
the vehicle. The following are general precau-
tions that should be closely observed.
WARNING
• The EV system uses high voltage up to approximately DC 400 volt. The system
can be hot during and after starting
and when the vehicle is shut off. Be
careful of both the high voltage and
the high temperature. Obey the labels
that are attached to the vehicle.
• Never disassemble, remove or replace high-voltage parts and cables as well
as their connectors. High-voltage
cables are colored orange.
• Disassembling, removing or replacing those parts or cables can cause severe
burns or electric shock that may result
in serious injury or death. The vehicle
high-voltage system has no user ser-
viceable parts. Take your vehicle to the
NISSAN certified LEAF dealer for any
necessary maintenance. • Park the vehicle on a level surface,
apply the parking brake securely and
chock the wheels to prevent the ve-
hicle from moving. Push the P (Park)
position switch on the shift lever or
place the vehicle into the N (Neutral)
position.
• If you must work with the EV (Electric vehicle) system is turned on, keep
hands, clothing, hair and tools away
from moving fans and any other mov-
ing parts.
• Make sure that the power switch is in the OFF or LOCK position when per-
forming any part replacement or re-
pairs.
• 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 whenever you work on your vehicle.
• Never get under the vehicle while it is supported only by a jack. If it is neces-
sary to work under the vehicle, support
it with safety stands.
• Keep smoking materials, flames and sparks away from the 12-volt battery.
CAUTION
• Do not work under the hood while the motor compartment is hot. Push the
power switch in the OFF position and
wait until it cools down.
• Avoid direct contact with used coolant. Improperly disposed coolant and/or
other vehicle fluids can damage the
environment. Always conform to local
regulations for the disposal of vehicle
fluids.
• Never connect or disconnect the bat- tery or any transistorized component
while the power switch is in the ON
position.
• Your vehicle is equipped with an auto- matic cooling fan. It may come on at
any time without warning, even if the
power switch is not in the ACC, ON or
READY to drive position. To avoid in-
jury, always disconnect the negative
12-volt battery cable before working
near the fan.
• Before performing any electrical main- tenance work on the vehicle such as
the battery, fuses or bulb replacement,
confirm the following:
– The charge connector is removedfrom the vehicle.
MAINTENANCE PRECAUTIONS
Maintenance and do-it yourself8-5

CHECKING COOLANT LEVEL
Check the coolant levelin the reservoir when
the high-voltage parts are cold. If the coolant
level is below the MIN level
B, open the reservoir
cap and add coolant up to the MAX level
A.If
the reservoir is empty, check the coolant level in
the coolant reservoir when the high-voltage
parts are cold. If there is insufficient coolant in
the coolant reservoir, fill the coolant reservoir with
coolant up to the reservoir cap opening and also
add it to the reservoir up to the MAX level
A.
Tighten the cap securely after adding coolant. For additional information on the location of the
engine coolant reservoir, refer to “Motor com-
partment check locations” in this section.
If the cooling system frequently requires
coolant, have it checked by a NISSAN cer-
tified LEAF dealer.
CHANGING COOLANT
Major cooling system repairs should be per-
formed by a NISSAN certified LEAF dealer. The
service procedures can be found in the appropri-
ate NISSAN Service Manual.
Improper servicing can result in reduced
heater performance.
WARNING
• To avoid the danger of being scalded, never change the coolant when the
motor compartment is hot.
• Never remove the coolant reservoir cap when the motor compartment 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 children and pets.
Coolant must be disposed of properly. Check
your local regulations.
Maintenance and do-it yourself8-9

• Keep the 12-volt battery surface clean and dry.Clean the 12-volt battery with a solution of
baking soda and water.
• Make certain the terminal connections are clean and securely tightened.
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 electronic ac- cessories that consume battery power when
the motor 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 12-volt battery to flames or electrical sparks. Hydrogen
gas generated by the 12-volt battery is
explosive. Do not allow 12-volt battery
fluid to contact your skin, eyes, fabrics
or painted surfaces. After touching a
12-volt battery or 12-volt battery cap,
do not touch or rub your eyes. Thor-
oughly wash your hands. If the acid
contacts your eyes, skin or clothing,
immediately flush with water for at
least 15 minutes and seek medical at-
tention.
• Do not operate the vehicle if the fluid in the 12-volt battery is low. Low 12-
volt battery fluid can cause a higher
load on the 12-volt battery which can
generate heat, reduce battery life, and
in some cases lead to an explosion.
• When working on or near a 12-volt battery, always wear suitable eye pro-
tection and remove all jewelry.
• 12-volt battery posts, terminals and re- lated accessories contain lead and
lead compounds. Wash hands after
handling.
• Keep the 12-volt battery out of the reach of children. 1. Remove the vent caps with a screwdriver as
shown. Use a cloth to protect the battery
case.
12-VOLT BATTERY
8-12Maintenance and do-it yourself

4. Align the tips of the upper and lower parts1,
and then push them together
2until it is
securely closed.
5. Operate the buttons to check that it is func- tioning properly.
See a NISSAN certified LEAF dealer if you need
any assistance for replacement. FCC Notice:
For USA:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may
not cause harmful interference, and (2) this
device must accept any interference re-
ceived, including interference that may
cause undesired operation.
NOTE:
Changes or modifications not expressly ap-
proved by the party responsible for compli-
ance could void the user’s authority to op-
erate the equipment.
For Canada:
This device complies with Industry Canada
licence-exempt RSS standard(s) . Operation
is subject to the following two conditions: (1)
this device may not cause interference, and
(2) this device must accept any interference,
including interference that may cause unde-
sired operation of the device.
Maintenance and do-it yourself8-21

Tire and loading information label
1Seating capacity: The maximum
number of occupants that can be
seated in the vehicle.
2Original size: The size of the tires
originally installed on the vehicle at
the factory.
3Cold tire pressure: Inflate the tires to
this pressure when the tires are
cold. Tires are considered COLD
after the vehicle has been parked for
3 or more hours, or driven less than
1 mile (1.6 km) at moderate speeds. The recommended cold tire inflation
is set by the manufacturer to provide
the best balance of tire wear, vehicle
handling, driveability, tire noise, etc.,
up to the vehicle’s GVWR.
4Tire size — refer to “Tire labeling” in
this section.
5Spare tire size or compact spare tire
size (if so equipped)
6Vehicle load limit: For additional infor-
mation, refer to “Vehicle loading infor-
mation” in the “Technical and consumer
information” section of this manual.
Checking tire pressure
1. Remove the valve stem cap from the tire.
2. Press the pressure gauge securely onto the valve stem. Do not press too
hard or force the valve stem sideways,
otherwise air will escape. If the hissing
sound of air escaping from the tire is
heard while checking the pressure, re-
position the gauge to eliminate this
leakage.
3. Remove the gauge.
Maintenance and do-it yourself8-29

TIRE CHAINS
Use of tire chains may be prohibited according to
location. Check the local laws before installing
tire chains. When installing tire chains, make sure
they are the proper size for the tires on your
vehicle and are installed according to the chain
manufacturer’s suggestions.
Use only SAE Class S chains.Class “S”
chains are used on vehicles with restricted tire to
vehicle clearance. Vehicles that can use Class
“S” chains are designed to meet the SAE stan-
dard minimum clearances between the tire and
the closest vehicle suspension or body compo-
nent required to accommodate the use of a win-
ter traction device (tire chains or cables) . The
minimum clearances are determined using the
factory equipped tire size. Other types may dam-
age your vehicle.
Use chain tensioners when recommended by the
tire chain manufacturer to ensure a tight fit. Loose
end links of the tire chain must be secured or
removed to prevent the possibility of whipping
action damage to the fenders or underbody. If
possible, avoid fully loading your vehicle when
using tire chains. In addition, drive at a reduced
speed. Otherwise, your vehicle may be damaged and/or vehicle handling and performance may be
adversely affected.
Tire chains must be installed only on the
front wheels and not on the rear wheels.
Do not use tire chains on dry roads. Driving with
tire chains in such conditions can cause damage
to the various mechanisms of the vehicle due to
some overstress.
CHANGING WHEELS AND TIRES
Tire rotation
NISSAN recommends rotating the tires
every 5,000 miles (8,000 km) .
As soon as possible, tighten the
wheel nuts to the specified torque
using a torque wrench.
Wheel nut tightening torque:83 ft-lb (112 N·m)
8-34Maintenance and do-it yourself

Also check tires for proper inflation pres-
sures. For additional information, refer to
the Tire and Loading Information label.
LOADING TIPS
• The GVW must not exceed the GVWRor GAWR as specified on the
F.M.V.S.S./C.M.V.S.S. certification label.
• Do not load the front and rear axle to the GAWR. Doing so will exceed the
GVWR.
WARNING
•
Properly secure all cargo with
ropes or straps to help prevent it
from sliding or shifting. Do not
place cargo higher than the seat-
backs. In a sudden stop or colli-
sion, unsecured cargo could
cause personal injury.
•Do not load your vehicle any
heavier than the GVWR or the
maximum front and rear GAWRs.
If you do, parts of your vehicle
can break, tire damage could oc-
cur, or it can change the way your
vehicle handles. This could result
in loss of control and cause per-
sonal injury.
•Overloading not only can
shorten the life of your vehicle
and the tire, but can cause un-
safe vehicle handling and longer
braking distances. This may
cause a premature tire failure,
which could result in a serious
accident and personal injury.
Failures caused by overloading
are not covered by the vehicle’s
warranty.
MEASUREMENT OF WEIGHTS
Secure loose items to prevent weight
shifts that could affect the balance of your
vehicle. When the vehicle is loaded, drive
to a scale and weigh the front and the rear
wheels separately to determine axle
loads. Individual axle loads should not ex-
ceed either of the Gross Axle Weight
Ratings (GAWR) . The total of the axle
loads should not exceed the Gross Ve-
hicle Weight Rating (GVWR) . These rat-
ings are given on the vehicle certification
label. If weight ratings are exceeded,
move or remove items to bring all weights
below the ratings.
Technical and consumer information9-13