1998 NISSAN MAXIMA ECU

Be sure the engine and ignition switch
are off and that the parking brake is
engaged securely.Be sure to use the correct wrench to
remove the plugs. An incorrect wrench
can cause damage.
REPLACING SPARK PLUGS1. Remove the rocker cover ornament using a
suitable hexagon wrench. (Front side)
2. Disconnect the electrical connectors.
3. Loosen the ignition coil fixing bolts. And
remove the ignition coil to give access to
the spark plugs.
4. Remove the spark plugs with a spark plug
wrench.
The plug wrench has a rubber seal that
holds the spark plug so that it will not fall
when it is pulled out. Make sure that eachspark plug is snugly fitted into the plug
wrench.
5. Fit the new plugs, one at a time, into the
spark plug wrench and install them. Turn
each plug in several full turns by hand, then
tighten with a spark plug wrench to the
correct torque. Do not overtighten.
Spark plug tightening torque:
14 to 22 ft-lb
(20 to 29 N×m)
SDI0122
SPARK PLUGS8-16
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For additional traction on icy roads, studded
tires may be used. However, some provinces
and states prohibit their use. Check local, state
and provincial laws before installing studded
tires. Skid and traction capabilities of studded
snow tires, on wet or dry surfaces, may be
poorer than that of non-studded snow tires.
TIRE CHAINSUse of tire chains may be prohibited according
to location. Check the local laws before install-
ing tire chains. When installing tire chains,
make sure they are of proper size for the tires
on your vehicle and are installed according to
the chain manufacturer's suggestions.Use
only SAE class S chains.Other types may
damage your vehicle. Use chain tensioners
when recommended by the tire chain manu-
facturer to ensure a tight fit. Loose end links of
the tire chain must be secured or removed to
prevent the possibility of whipping action dam-
age to the fenders or undercarriage. If pos-
sible, avoid fully loading your vehicle when
using tire chains. In addition, drive at a re-
duced speed. Otherwise, your vehicle may be
damaged and/or vehicle handling and perfor-
mance may be adversely affected.
Never install tire chains on a T-type spare tire.
Do not use the chains on dry roads.
CHANGING TIRES AND WHEELS
Tire rotationNISSAN recommends that tires be rotated
every 7,500 miles (12,000 km).
Wheel nut tightening torque:
72 to 87 ft-lb (98 to 118 N×m)
See ªFlat tireº in the ª6. In case of emergencyº
section for tire replacing procedures.
DI0048-B
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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
your NISSAN dealer do it promptly. In addition,
you should notify your NISSAN dealer if you
think that repairs are required.
When performing any checks or maintenance
work, see ªMaintenance precautionsº in the ª8.
Do-it-yourselfº section.EXPLANATION OF MAINTENANCE
ITEMSAdditional information on the following
items with ª*º is found in the ª8. Do-it-
yourselfº section.Outside the vehicleThe maintenance items listed here should be
performed from time to time, unless otherwise
specified.
Tires*:Check the pressure with a gauge pe-
riodically when at a service station, including
the spare, and adjust to the specified pressure
if necessary. Check carefully for damage, cuts
or excessive wear.
Wheel nuts*:When checking the tires, makesure no nuts are missing, and check for any
loose nuts. Tighten if necessary.
Tire rotation*:Tires should be rotated every
7,500 miles (12,000 km).
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.
Windshield wiper blades*:Check for cracks
or wear if they do not wipe properly.
Doors and engine hood:Check that all doors
and the engine hood operate smoothly as well
as the trunk lid or back hatch. Also make sure
that all latches lock securely. Lubricate if nec-
essary. Make sure that the secondary latch
keeps the hood from opening when the pri-
mary latch is released.
When driving in areas using road salt or other
corrosive materials, check lubrication fre-
quently.
Inside the vehicleThe maintenance items listed here should be
checked on a regular basis, such as when
performing periodic maintenance, cleaning the
vehicle, etc.
Lights*: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.
Warning lights and buzzers:Make sure that
all warning lights and buzzers are operating
properly.
Windshield wiper and washer*:Check that
the wipers and washer operate properly and
that the wipers do not streak.
Windshield defroster:Check that the air
comes out of the defroster outlets properly and
in good quantity when operating the heater or
air conditioner.
Steering wheel:Check for changes in the
steering conditions, such as excessive free
play, hard steering or strange noises.
GENERAL MAINTENANCE
Maintenance
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Seats:Check seat position controls such as
seat adjusters, seatback recliner, etc. to en-
sure 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 equipped) hold securely
in all latched positions.
Seat belts:Check that all parts of the seat belt
system (for example, buckles, anchors, adjust-
ers and retractors) operate properly and
smoothly, and are installed securely. Check
the belt webbing for cuts, fraying, wear or
damage.
Accelerator pedal:Check the pedal for
smooth operation and make sure the pedal
does not catch or require uneven effort. Keep
the floor mats away from the pedal.
Clutch pedal*:Make sure the pedal operates
smoothly and check that it has the proper free
play.
Brakes:Check that the brakes do not pull the
vehicle to one side when applied.
Brake pedal and booster*:Check the pedal
for smooth operation and make sure it has the
proper distance under it when depressed fully.
Check the brake booster function. Be sure tokeep floor mats away from the pedal.
Parking brake*:Check that the lever has the
proper travel and make sure that the vehicle is
held securely on a fairly steep hill when only
the parking brake is applied.
Automatic transaxle P (Park) position
mechanism:Check that the brake pedal must
be depressed for the selector lever to be
moved from the P (Park) position. On a fairly
steep hill check that the vehicle is held se-
curely with the selector lever in the P (Park)
position without applying any brakes.
Under the hood and the vehicleThe maintenance items listed here should be
checked periodically (for example, each time
you check the engine oil or refuel).
Windshield washer fluid*:Check that there
is adequate fluid in the tank.
Engine coolant level*:Check the coolant
level when the engine is cold.
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, dete-
rioration or loose connections.Brake and clutch fluid levels*:Make sure
that the brake and clutch fluid levels are be-
tween the MAX and MIN lines on the reservoir.
Battery*:Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Engine drive belts*:Make sure that no belt is
frayed, worn, cracked or oily.
Engine oil level*:Check the level on the
dipstick after parking the vehicle on a level
spot and turning off the engine. Be sure to wait
a few minutes to allow the oil to drain back into
the sump.
Power steering fluid level* and lines:Check
the level in the reservoir tank with the engine
off. Check the lines for proper attachment,
leaks, cracks, etc.
Automatic transaxle fluid level*:Check the
level on the dipstick after putting the selector
lever in P (Park) position with the engine idling.
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, immediately locate the
trouble and correct it.
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cargo as necessary. If either the front or
rear GAWR is exceeded, shift the load or
remove cargo as necessary.
LOADING TIPSIThe GVW must not exceed GVWR or
GAWR as specified on the F.M.V.S.S. cer-
tification label.
IDo not load the front and rear axle to the
GAWR. Doing so will exceed the GVWR.IProperly secure all cargo to help pre-
vent it from sliding or shifting. Do not
place cargo higher than the seat-
backs. In a sudden stop or collision,
unsecured cargo could cause per-
sonal injury.
IDo not load your vehicle any heavier
than the GVWR or the maximum front
and rear GAWRs. If you do, parts on
your vehicle can break, or it can
change the way your vehicle handles.
This could result in loss of control
and cause personal injury.
IOverloading can shorten the life ofyour vehicle. Failures caused by
overloading are not covered by your
warranty.
Your new vehicle was designed to be used
primarily to carry passengers and cargo. Re-
member that towing a trailer will place addi-
tional loads on your vehicle's engine, drive
train, steering, braking and other systems.
Information on trailer towing ability and the
special equipment required should be ob-
tained from your Nissan dealer. He can obtain
aNissan Trailer Towing Guidefor you.
TI1011M
TOWING A TRAILERTechnical and consumer information
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MAXIMUM LOAD LIMITS
Maximum trailer loadsNever allow the total trailer load to exceed
1,000 lb (454 kg). The total trailer load equals
trailer weight plus its cargo weight. Towing
loads greater than 1,000 lb (454 kg) or using
improper towing equipment could adversely
affect vehicle handling, braking and perfor-
mance.Vehicle damage and/or personal injury
resulting from improper towing proce-
dures is not covered by NISSAN warran-
ties. Information on trailer towing and
required towing equipment should be
obtained from dealers who specialize in
providing trailers or other towing
equipment.Tongue loadKeep the tongue load between 9 and 11% of
the total trailer load. If the tongue load be-
comes excessive, rearrange cargo to allow for
proper tongue load.
Maximum gross vehicle weight/
maximum gross axle weightThe gross vehicle weight of the towing vehicle
must not exceed. GVWR shown on the F.M-
.V.S.S. certification label. The gross vehicle
weight equals the combined weight of the
unloaded vehicle, passengers, luggage, hitch,
trailer tongue load and any other optional
equipment. In addition, front or rear gross axle
weight must not exceed GAWR shown on the
F.M.V.S.S. certification label.
TOWING LOAD/SPECIFICATION CHART
Unit: lb (kg)
MAXIMUM
TOWING LOAD1,000 (454)
MAXIMUM
TONGUE LOAD110 (49)
TOWING SAFETY
Trailer hitchChoose a proper hitch for your vehicle and
trailer. Make sure the trailer hitch is securely
attached to the vehicle, to help avoid personal
injury or property damage due to sway caused
by crosswinds, rough road surfaces or passing
trucks.IDo not use axle-mounted hitches.
IThe hitch should not be attached to
or affect the operation of the impact-
absorbing bumper
IDo not modify the vehicle exhaust
system, brake system, etc. when the
hitch is installed.
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ITo reduce the possibility of additional
damage if your vehicle is struck from
the rear, where practical, remove the
hitch when not in use. Remove the
receiver when not in use. After the
hitch is removed, seal the bolt holes
to prevent exhaust fumes, water or
dust from entering the passenger
compartment.
IRegularly check that all hitch mount-
ing bolts are securely mounted.Tire pressuresIWhen towing a trailer, inflate the vehicle
tires to the recommended cold tire pressure
indicated on the tire placard (located on the
inside of the center console lid.)
ITrailer tire condition, size, load rating and
proper inflation pressure should be in ac-
cordance with the trailer and tire manufac-
turers' specifications.Safety chainAlways use a suitable chain between your
vehicle and the trailer. The chain should be
crossed and should be attached to the hitch,
not to the vehicle bumper or axle. Be sure toleave enough slack in the chain to permit
turning corners.
Trailer lightsTrailer lights should comply with federal and/or
local regulations. When wiring the vehicle for
towing, connect the stop and tail light pickup
into the vehicle electrical circuit at a point
between the sensor and stop light or light
switch.Trailer brakesIf your trailer is equipped with a braking sys-
tem, make sure it conforms to federal and/or
local regulations and that it is properly in-
stalled.Never connect a trailer brake system
directly to the vehicle brake system.Pre-towing tipsIBe certain your vehicle maintains a level
position when a loaded and/or unloaded
trailer is hitched. Do not drive the vehicle if
it has an abnormal nose-up or nose-down
condition; check for improper tongue load,
overload, worn suspension or other pos-sible causes of either condition.
IAlways secure items in the trailer to prevent
load shifts while driving.
IBe certain your rear view mirrors conform to
all federal, state or local regulations. If not,
install any mirrors required for towing be-
fore driving the vehicle.
Trailer towing tipsIn order to gain skill and an understanding of
the vehicle's behavior, you should practice
turning, stopping and backing up in an area
which is free from traffic. Steering stability, and
braking performance will be somewhat differ-
ent than under normal driving conditions.
IAlways secure items in the trailer to prevent
load shift while driving.
IAvoid abrupt starts, acceleration or stops.
IAvoid sharp turns or lane changes.
IAlways drive your vehicle at a moderate
speed.
IAlways block the wheels on both vehicle
and trailer when parking. Parking on a
slope is not recommended; however, if you
must do so, and if your vehicle is equipped
with automatic transmission, first block the
wheels and apply the parking brake, andTechnical and consumer information
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