ECU INFINITI G37 2012 Workshop Manual

Black plate (388,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]6-8 In case of emergency5. Securely store the flat tire and jacking
equipment in the vehicle.
6. Place the spare tire cover and the trunk
floor carpeting over the damaged tire.
7. Close the trunk.
WARNING. Always make sure that the spare tire and
jacking equipment are properly secured
after use. Such items can become
dangerous projectiles in an accident or
sudden stop.
. The T-type spare tire and small size
spare tire are designed for emergency
use. See specific instructions under the
heading “ Wheels and tires ” (P.8-33).
If needed, Roadside Assistance is avail-
able. Please see your Warranty Information
Booklet or Roadside Assistance I.D. Card
for the toll-free number to call (U.S.) or
Warranty Information Booklet (Canada). GUID-AB535234-DC9B-4E72-BAB2-7645DFBFC702
To start your engine with a booster battery,
the instructions and precautions below
must be followed.
WARNING . If done incorrectly, jump starting can
lead to a battery explosion, resulting in
severe injury or death. It could also
damage your vehicle.
. Explosive hydrogen gas is always pre-
sent in the vicinity of the battery. Keep
all sparks and flames away from the
battery.
. Do not allow battery fluid to come into
contact with eyes, skin, clothing or
painted surfaces. Battery fluid is a
corrosive sulphuric acid solution which
can cause severe burns. If the fluid
should come into contact with anything,
immediately flush the contacted area
with water.
. Keep the battery out of the reach of
children.
. The booster battery must be rated at 12
volts. Use of an improperly rated battery
can damage your vehicle. . Whenever working on or near a battery,
always wear suitable eye protectors (for
example, goggles or industrial safety
spectacles) and remove rings, metal
bands, or any other jewelry. Do not lean
over the battery when jump starting.
. Do not attempt to jump start a frozen
battery. It could explode and cause
serious injury.
. Your vehicle has an automatic engine
cooling fan. It could come on at any time.
Keep hands and other objects away from
it.
If needed, Roadside Assistance is avail-
able. Please see your Warranty Information
Booklet or Roadside Assistance I.D. Card
for the toll-free number to call (U.S.) or
Warranty Information Booklet (Canada).JUMP STARTING

Black plate (392,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]6-12 In case of emergencyused.
. Always attach safety chains before tow-
ing.
For information about towing your vehicle
behind a recreational vehicle (RV), see
“ Flat towing ” (P.9-23) of this manual.
If needed, Roadside Assistance is avail-
able. Please see your Warranty Information
Booklet or Roadside Assistance I.D. Card
for the toll-free number to call (U.S.) or
Warranty & Roadside Assistance Informa-
tion Booklet (Canada). SCE0788
Two-wheel drive models
TOWING RECOMMENDED BY INFINITI GUID-1972A0E5-899D-424B-955B-A23087C49817
Two-Wheel Drive (2WD) models GUID-FE3D3969-5707-4CA8-BD66-27F17FDE5FEF
INFINITI recommends that your vehicle be
towed with the driving (rear) wheels off the
ground or place the vehicle on a flat bed
truck as illustrated.
CAUTION . Never tow automatic transmission mod-
els with the rear wheels on the ground
or four wheels on the ground (forward or
backward), as this may cause serious and expensive damage to the transmis-
sion. If it is necessary to tow the vehicle
with the front wheels raised, always use
towing dollies under the rear wheels.
. When towing rear wheel drive models
with the front wheels on the ground or
on towing dollies: Push the ignition
switch to the ACC or ON position, and
secure the steering wheel in a straight-
ahead position with a rope or similar
device.
. If you have to tow manual transmission

Black plate (394,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]6-14 In case of emergencyPulling a stuck vehicle GUID-B007B93C-F1B1-4109-8B68-991857140467
If your vehicle is stuck in sand, snow, mud,
etc., use a tow strap or other device
designed specifically for vehicle recovery.
Always follow the manufacturer ’ s instruc-
tions for the recovery device.
SCE0892
Sedan
Front (except for INFINITI Performance
Line, Aerodynamic Package models —
Coupe): GUID-D73A39BF-43C8-459F-9C24-47B7F579C407 SCE0893
Coupe (except for INFINITI Performance
Line, Aerodynamic Package models)
1. To remove the hook cover from the
bumper with a suitable tool, insert the
tool into the mesh and take off the
removable part.
2. Securely install the vehicle recovery
hook
* 1
stored with jacking tools as

Black plate (395,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]illustrated. Attach the tow strap to the
recovery hook.
Make sure that the hook is properly
secured in the original place after use.
SCE0964
Coupe (INFINITI Performance Line, Aerodynamic Package models)
Front (INFINITI Performance Line, Aerody-
namic Package models — Coupe): GUID-D73A39BF-43C8-459F-9C24-47B7F579C407
1. To remove the cover
* 1
from the
bumper with a suitable tool.
2. Pull the cover up
* 2
and then pull
cover out.
In case of emergency
6-15

Black plate (396,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]6-16 In case of emergency SCE0965
Coupe (INFINITI Performance Line, Aerodynamic Package models)
3. Securely install the vehicle recovery
hook
* 3
stored with jacking tools as
illustrated. Attach the tow strap to the
recovery hook. Wrap the hook
* 3
and
strap with a cloth to avoid bumper
damage as illustrated. Make sure that
the hook is properly secured in the
original place after use. SCE0891
Rear: GUID-D73A39BF-43C8-459F-9C24-47B7F579C407
Do not use the tie down hooks
* 1
for
towing or vehicle recovery.
CAUTION . Tow chains or cables must be attached
only to the vehicle recovery hooks or
main structural members of the vehicle.
Otherwise, the vehicle body will be
damaged.
. Do not use the vehicle tie downs to free
a vehicle stuck in sand, snow, mud, etc.

Black plate (410,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-4 Maintenance and do-it-yourself GUID-D9BF222E-C089-4501-8A50-955A33E8DF3B
During the normal day-to-day operation of
the vehicle, general maintenance should
be performed regularly as prescribed in
this section. If you detect any unusual
sounds, vibrations or smell, be sure to
check for the cause or have an INFINITI
retailer do it promptly. In addition, you
should notify an INFINITI retailer if you
think that repairs are required.
When performing any checks or mainte-
nance work, see “ Maintenance precau-
tions ” (P.8-6).
EXPLANATION OF MAINTENANCE
ITEMS GUID-464D8334-4B6E-4650-8810-2AA00D8EFD2D
Additional information on the following
items with “ * ” is found later in this
section.
Outside the vehicle GUID-D21012E2-ED85-45D5-B3C1-02A03AE3EF12
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.
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 check-
ing 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 7,500 miles (12,000 km). If your
vehicle is equipped with different sized
tires in the front and rear, tires cannot be
rotated.
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.
Tire, 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 ”
(US) or “ Tire Safety Information ” (Canada)
in the INFINITI Warranty Information Book-
let.
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 GUID-9BC72144-3F74-486E-818A-C3F8D037D67D
The maintenance items listed here should
be checked on a regular basis, such as
when performing periodic maintenance,
cleaning the vehicle, etc.GENERAL MAINTENANCE

Black plate (411,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]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.
Automatic transmission P (Park) mechan-
ism: On a fairly steep hill, check that your
vehicle is held securely with the selector
lever in the P (Park) position without
applying any brakes.
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 an INFINITI retailer
immediately. Keep the floor mat away from
the pedal.
Brakes: Check that the brakes do not pull
the vehicle to one side when applied.
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 an INFINITI
retailer.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, an-
chors, adjuster 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 recliner, 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.
Windshield defroster: Check that the air
comes out of the defroster outlets properly
and in sufficient quantity when operating
the heater or air conditioner.
Windshield wiper and washer*: Check that
the wipers and washer operate properly
and that the wipers do not streak.
Under the hood and vehicle GUID-29B64B94-E77F-40DC-A4B2-6B5D542860ED
The maintenance items listed here should
be checked periodically (for example, each
time you check the engine oil or refuel). Battery*: Check the fluid level in each cell.
It should be between the MAX and MIN
lines. Vehicles operated in high tempera-
tures or under severe condition require
frequent checks of the battery fluid level.
Brake fluid level*: Make sure that the
brake fluid level is between the MAX and
MIN lines on the reservoir.
Engine coolant level*: Check the coolant
level when the engine is cold.
Engine drive belts*: Make sure that no belt
is frayed, worn, cracked or oily.
Engine oil level*: Check the level after
parking the vehicle on a level spot and
turning off the engine. Wait more than 15
minutes for the oil to drain back into the oil
pan.
Exhaust system: Make sure there are no
loose supports, cracks or holes. If the
sound of the exhaust seems unusual or
there is a smell of exhaust fumes, im-
mediately have the exhaust system in-
spected by an INFINITI retailer. (See
“ Precautions when starting and driving ”
(P.5-3) for exhaust gas (Carbon monoxide).)
Fluid leaks: Check under the vehicle for
fuel, oil, water or other fluid leaks after the
vehicle has been parked for a while. Water
Maintenance and do-it-yourself
8-5

Black plate (412,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-6 Maintenance and do-it-yourselfdripping from the air conditioner after use
is normal. If you should notice any leaks or
if gasoline fumes are evident, check for the
cause and have it corrected immediately.
Power steering fluid level* and lines:
Check the level when the fluid is cold,
with the engine off. Check the lines for
proper attachment, leaks, cracks, etc.
Radiator and hoses: Check the front of the
radiator and clean off any dirt, insects,
leaves, etc., that may have accumulated.
Make sure the hoses have no cracks,
deformation, rot or loose connections.
Underbody: The underbody is frequently
exposed to corrosive substances such as
those used on icy roads or to control dust.
It is very important to remove these
substances, otherwise rust will form on
the floor pan, frame, fuel lines and around
the exhaust system. At the end of winter,
the underbody should be thoroughly
flushed with plain water, being careful to
clean those areas where mud and dirt may
accumulate. For additional information,
see “ Cleaning exterior ” (P.7-2).
Windshield washer fluid*: Check that there
is adequate fluid in the reservoir. GUID-DA5BC1C7-4A3F-402D-B20E-D7AF3C2C5866
When performing any inspection or main-
tenance 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. For manual transmission mod-
els, move the shift lever to N (Neutral).
For automatic transmission models,
move the selector lever to P (Park).
. Be sure the ignition switch is in the OFF
or LOCK position when performing any
parts replacement or repairs.
. Never connect or disconnect the battery
or any transistorized component while
the ignition switch is in the ON position.
. Never leave the engine or automatic
transmission related component har-
nesses disconnected while the ignition
switch is in the ON position.
. 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 whenever
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.
. Your vehicle is equipped with an auto-
matic engine cooling fan. It may come on
at any time without warning, 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.MAINTENANCE PRECAUTIONS

Black plate (416,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-10 Maintenance and do-it-yourself SDI2043
CHECKING ENGINE COOLANT LEVEL GUID-0A58561D-6ED8-4332-9DEB-68F0F2BD40A6
Check the coolant level in the reservoir
when the engine is cold. If the coolant
level is below MIN
* 2
, open the reservoir
tank cap and add coolant up to the MAX
* 1
level. If the reservoir tank 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 tank up to the
MAX level
* 1
.
Tighten the cap securely after adding
engine coolant. If the cooling system requires coolant
frequently, have it checked by an INFINITI
retailer.
CHANGING ENGINE COOLANT GUID-5414AC03-7904-49CD-BD61-168CF59A9756
Major cooling system repairs should be
performed by an INFINITI retailer. The
service procedures can be found in the
appropriate INFINITI 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 children and
pets. Engine coolant must be disposed of
properly. Check your local regulations.

Black plate (419,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]CAUTIONBe sure to remove any old rubber gasket
remaining on the mounting surface of the
engine. Failure to do so could lead to engine
damage.
6. Coat the gasket on the new filter with
clean engine oil.
7. 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)
8. 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.
9. Refill engine with recommended oil and
install the oil filler cap securely.
See “ Capacities and recommended
fuel/lubricants ” (P.9-2) for drain and refill capacity. The drain and refill
capacity depends on the oil tempera-
ture and drain time. Use these specifi-
cations for reference only. Always use
the dipstick to determine the proper
amount of oil in the engine.
10. Start the engine and check for leakage
around the drain plug and the oil filter.
Correct as required.
11. Turn the engine off and wait more than
15 minutes. Check the oil level with the
dipstick. Add engine oil if necessary.
After the operation GUID-28B45484-D2E9-4712-897E-4EBAD29B4BC7
1. Install the engine undercover into
position as the following steps.
a. Pull the center of the small plastic
clip out.
b. Hold the engine undercover into
position.
c. Insert the clip through the under-
cover into the hole in the frame, then
push the center of the clip in to lock
the clip in place.
d. Install the other bolts that hold the
undercover in place. Be careful not
to strip the bolts or over-tighten
them. 2. Lower the vehicle carefully to the
ground.
3. Dispose of waste oil and filter properly.
WARNING . Prolonged and repeated contact with
used engine oil may cause skin cancer.
. Try to avoid direct skin contact with used
oil. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep used engine oil out of reach of
children.
Maintenance and do-it-yourself
8-13