1997 NISSAN FRONTIER brakes

orRear anti-lock brake
warning light
If the light comes on while the engine is
running, it may indicate a potential problem
with the rear anti-lock brake system. Have the
system checked by your NISSAN dealer.
If an abnormality occurs in the system, the
rear anti-lock function ceases but the ordi-
nary brakes continue to operate normally.
If the light comes on while you are driving,
contact your NISSAN dealer for repair.
The rear anti-lock brake system may only
be effective when driving in the 2-wheel
drive mode.
When driving in the 4-wheel drive mode, if the
front wheels lock, the rear wheels also lock. If
this happens, the rear anti-lock brake system
may stop functioning, but the ordinary brakes
operate normally. The warning light then
comes on. The above condition is not a mal-
function, and the rear anti-lock brake system
recovers once the engine is turned off and
restarted. The warning light then goes off. For
further description of the rear anti-lock brake
system, refer to ``Rear anti-lock brake system''
in the ``Starting and driving'' section.
Overdrive off indicator light
(if so equipped)
This light comes on when the overdrive
switch is pushed to the OFF position.
Key reminder chime
The chime sounds when the driver's door is
opened and the key is left in the ignition
switch. Take the ignition key when you
leave the vehicle.
Light reminder chime
A chime sounds if the driver's door is opened
with the headlight switch on unless the ignition
key is in the ON position. Turn the headlight
switch off when you leave the vehicle.
Brake pad wear warning
The disc brake pads have audible wear
warnings. When a brake pad requires re-
placement, it makes a high pitched scraping
sound when the vehicle is in motion whether
or not the brake pedal is depressed. Have
the brakes checked as soon as possible if
the warning sound is heard.
orMalfunction indi-
cator light (MIL)
If the malfunction indicator light comes onsteady or blinks while the engine is running,
it may indicate a potential emission control
problem.
The malfunction indicator light will come on
in one of two ways:
cMalfunction indicator light on steady - -
An emission control system malfunction
has been detected. Have the vehicle
inspected by an authorized NISSAN
dealer. You do not need to have your
vehicle towed to the dealer.
cMalfunction indicator light blinking - - An
engine misfire has been detected which
may damage the emission control sys-
tem. To reduce or avoid emission control
system damage:
cdo not drive at speeds above 45 MPH
(72 km/h).
c
avoid hard acceleration or deceleration.
cavoid steep uphill grades.
cif possible, reduce the amount of cargo
being hauled or towed.
The malfunction indicator light may stop
blinking and come on steady.
Have the vehicle inspected by an autho-
rized NISSAN dealer. You do not need to
have your vehicle towed to the dealer.
1-9
ZX

Your NISSAN is designed for both normal
and off-road use. It has a higher ground
clearance and a narrower track to make it
suitable for off-road use. These characteris-
tics give the vehicle a higher center of
gravity than ordinary passenger cars. An
advantage of the higher ground clearance is
a better view of your surroundings, allowing
you to anticipate problems. However, avoid
driving in deep water or mud as your
NISSAN is mainly designed for leisure use,
unlike a conventional off-road vehicle.
Please observe the following precautions:
WARNING
cDrive carefully when off the road and
avoid dangerous areas. Always wear
your seat belts to help keep you and
your passengers in position when
driving over rough terrain.
cDo not drive across steep slopes.
Instead drive either straight up or
straight down the slopes. Off-road
vehicles can tip over sideways much
more easily than they can forward or
backward.cMany hills are too steep for any ve-
hicle. If you drive up them, you may
stall. If you drive down them, you
may not be able to control your
speed. If you drive across them, you
may roll over.
cStay alert when driving to the top of
a hill. At the top there could be a
drop-off or other hazard that could
cause an accident.
cIf your engine stalls or you cannot
make it to the top of a steep hill,
never attempt to turn around. Your
vehicle could tip or roll over. Always
back straight down in reverse gear.
Never back down in neutral (N) or
with the clutch depressed, using
only the brake, as this could cause
loss of control.
c
Heavy braking going down a hill could
cause your brakes to overheat and
fade, resulting in loss of control and
an accident. Apply brakes lightly and
use a low gear to control your speed.
cIf at all possible, avoid sharp turning
maneuvers, particularly at high
speeds. Your NISSAN 4-wheel drive
vehicle has a higher center of gravitythan a 2-wheel drive vehicle and can
tip over more easily. The vehicle is
not designed for cornering at the
same speeds as conventional
2-wheel drive vehicles any more
than low-slung sports cars are de-
signed to perform satisfactorily un-
der off-road conditions. Failure to
operate this vehicle correctly could
result in loss of control and/or a
rollover accident.
cUnsecured cargo can be thrown
around when driving over rough ter-
rain. Properly secure it so that it will
not be thrown forward and cause
injury to you or your passengers.
cAvoid raising the center of gravity by
loading things on the roof or equip-
ping the vehicle with tires larger than
specified in this manual. This could
cause your vehicle to roll over. Put
heavy loads in the cargo area as far
forward and as low as possible.
cDo not grip the inside or spokes of
the steering wheel when driving off-
road. The steering wheel could jerk
and injure your hands. Instead drive
with your fingers and thumbs on the
outside of the rim.
DRIVING YOUR
4-WHEEL DRIVE SAFELY
4-21
ZX

cBefore operating the vehicle, ensure
that the driver and all passengers
have their seat belts fastened.
cAlways drive with the floor mats in
place as the floor may become very
hot. Particular care should be taken
if you are barefoot.
cLower your speed when encounter-
ing strong crosswinds. With its
higher center of gravity, your
NISSAN is more affected by gusty
side winds. Slower speeds ensure
better vehicle control.
cDo not drive beyond the perfor-
mance of the tires even with 4WD.
Accelerating quickly, steering or
braking may cause loss of control or
the vehicle to stick in the road.
cInstall the same size of winter tires
on all four (4) wheels (such as stud-
less tires) or install tire chains to the
rear wheels when driving on slippery
roads (e.g., after a snow) and drive
carefully using 4WD.
cBe sure to check the brakes immedi-
ately after driving in mud or water as
specified in ``Wet brakes'' under theheading ``Brake system,'' later in this
section.
cAvoid parking your vehicle on steep
hills. If you get out of the vehicle and
it rolls forward, backward or side-
ways, you could be injured.
cWhenever you drive off-road
through sand, mud or water as deep
as the wheel hub, more frequent
maintenance may be required. For
details, refer to ``Maintenance for off-
road driving'' in the ``Maintenance
schedule'' section.CAUTION
Always use tires of the same size,
brand, construction (bias, bias-belted
or radial), and tread pattern on all four
wheels. Failure to do so may result in a
circumference difference between tires
on the front and rear axles which will
cause excessive tire wear and may
damage the transmission, transfer
case and differential gears.
If excessive tire wear is found, it is recom-
mended that all four tires be replaced with
tires of the same size, brand, construction
and tread pattern. The tire pressure and
wheel alignment should also be checked
and corrected as necessary. Contact your
NISSAN dealer.
Snow tires
If you install snow tires, they must also be
the same size, brand, construction and
tread pattern on all four wheels.
CAUTION
ONLY use spare tires specified for each
4-wheel drive model.
TIRES OF 4-WHEEL
DRIVE
4-22
ZX

The brake system has two separate hydrau-
lic circuits. If one circuit develops a problem,
you will still have braking at two wheels.
Vacuum assisted brakes
The brake booster aids braking by using
engine vacuum. If the engine stops, you can
stop the vehicle by depressing the brake
pedal. However, greater foot pressure on
the brake pedal will be required to stop the
vehicle and the stopping distance will be
longer.
Wet brakes
When the vehicle is washed or driven
through water, the brakes may get wet. As a
result, your braking distance will be longer
and the vehicle may pull to one side during
braking.
To dry brakes, drive the vehicle at a safe
speed while lightly pressing the brake pedal
to heat the brakes. Do this until the brakes
return to normal. Avoid driving the vehicle at
high speeds until the brakes function cor-
rectly.Using the brakes
Avoid resting your foot on the brake pedal
while driving. This will overheat the brakes,
wear out the brake linings and pads faster,
and reduce gas mileage.
To help reduce brake wear, and to prevent
the brakes from overheating, reduce speed
and downshift to a lower gear before going
down a slope or long grade.
WARNING
While driving on a slippery surface, be
careful when braking, accelerating or
downshifting. Abrupt braking actions
or sudden acceleration could cause the
wheels to skid and result in an acci-
dent.
Normal Operation
The rear anti-lock brake system does not
operate at speeds below 3 to 6 MPH (5 to 10
km/h). (The speeds vary according to road
conditions.)
When driving in the 2-wheel drive mode, the
rear anti-lock brake system controls the rear
wheels so they will not lock when braking
abruptly or when braking on a slippery road.
Thus, difficult steering and swerving of the
vehicle due to locked rear wheels is mini-
mized. The system detects the rear wheel
rotation rate and electronically controls the
pressure applied to each rear brake. Slight
vibration on the brake pedal accompanied
by noise usually occurs while the ABS sys-
tem is operating. Such vibration and noise
encountered during abrupt braking is not a
problem, but indicates that the system is
functioning.
Even with the rear anti-lock brake sys-
tem, your front wheels can still lock. If
this happens, release the brake pedal
slightly and then reapply pressure.
Self-test feature
The rear anti-lock brake system consists of
an electronic sensor and two hydraulic so-
BRAKE SYSTEM REAR ANTI-LOCK BRAKE
SYSTEM (R-ABS)
4-25
ZX

lenoids controlled by a computer. The com-
puter has a built-in diagnostic feature that
tests the system each time you start the
engine and move the vehicle at a low speed
in forward or reverse. When the self-test
occurs, you may hear a ``clunk'' noise
and/or feel a pulsation in the brake pedal.
This is normal and is not an indication of any
malfunction. If the computer senses any
malfunction, it switches the rear anti-lock
brake system off and turns on the ABS
brake warning light in the dashboard. The
brake system then operates normally, but
without anti-lock assistance.
If an abnormality occurs in the system, the rear
anti-lock function will cease but the ordinary
brakes will continue to operate normally. The
ABS brake warning light will then come on.
If the light comes on while you are driving,
contact your NISSAN dealer for repair.
The rear anti-lock brake system
may only be effective when driving in the
2-wheel drive mode.
When driving in the 4-wheel drive mode, the
rear anti-lock brake system may not be
effective in many cases because the front
axle is connected with the rear axle throughthe transfer gear. The rear wheels lock if the
front wheels lock. If this happens, the rear
anti-lock brake system may cease function-
ing but the ordinary brakes will continue to
operate normally. The ABS brake warning
light will then come on.
The above condition is not a malfunction
and the rear anti-lock brake system recov-
ers when the engine is started again. The
ABS brake warning light then goes off.
Using the System
Depress the brake pedal and hold it down.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping dis-
tances.
WARNING
The rear anti-lock brake system is a
sophisticated device. But it cannot pre-
vent accidents resulting from careless
or dangerous driving techniques. It can
help maintain vehicle control undersome conditions, but remember that
the stopping distance on slippery sur-
faces will be longer than on normal
surfaces even with rear wheel ABS.
Stopping distances may also be longer
on rough, gravel, or snow covered
roads, or if you are using tire chains.
Always maintain a safe distance from
the vehicle in front of you. Ultimately,
the responsibility for safety of self and
others rests in the hands of the driver.
Tire type and condition may also affect
braking effectiveness.
cWhen replacing tires, install the
specified size of tires on all four
wheels.
cWhen installing a spare tire, make
sure it is the proper size and type as
specified on the tire placard. See
``Tire placard'' in the ``Technical and
consumer information'' section.
4-26
ZX

Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front disc-type brakes self-adjust every
time the brake pedal is applied. The rear
drum-type brakes on two-wheel drive trucks
self-adjust every time the parking brake is
applied. The rear drum-type brakes on four-
wheel drive trucks self-adjust every time the
brake pedal is applied. If the brake pedal
goes down farther than normal, it may be
due to a lack of adjustment of the rear drum
brakes. Apply the parking brake several
times.
WARNING
If the brake pedal height does not re-
turn to normal, see your NISSAN dealer
and have it checked.
Brake pad wear indicators
The disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, it will make a high
pitched scraping or screeching sound when
the vehicle is in motion whether or not the
brake pedal is depressed. Have the brakeschecked as soon as possible if the wear
indicator sound is heard.
Under some driving or climate conditions,
occasional brake squeak, squeal or other
noise may be heard. Occasional brake
noise during light to moderate stops is nor-
mal and does not affect the function or
performance of the brake system.
The rear drum brakes (if so equipped) do
not have audible wear indicators. Should
you ever hear an unusually loud noise from
the rear drum brakes, have them inspected
as soon as possible by your NISSAN
dealer.
Proper brake inspection intervals should
be followed.For more information regard-
ing brake inspections, see the appropriate
maintenance schedule information in the
``Maintenance Schedule'' section of this
manual.Check the brake booster function with the
following steps:
1. With the engine off, press and release
the brake pedal several times. When
brake pedal movement (distance of
travel) remains the same from one pedal
application to the next, continue on to
next step.
2. While depressing the brake pedal, start
the engine. The pedal height should drop
a little.
3. With the brake pedal depressed, stop the
engine. Keeping the pedal depressed for
about 30 seconds, the pedal height
should not change.
4. Run the engine for one minute without
depressing the brake pedal, then turn it
off. Depress the brake pedal several
times. The pedal travel distance will de-
crease gradually with each depression
as the vacuum is released from the
booster.
If the brakes do not operate properly, have
the brakes checked by your NISSAN dealer.
BRAKE BOOSTER
7-19
ZX

make sure 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) for 2WD vehicles
and 3,750 miles (6,000 km) for 4WD ve-
hicles.
Wheel alignment and balanceIf the ve-
hicle 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.
Windshield wiper blades*Check for
cracks or wear if they do not wipe properly.
Doors and engine hoodCheck that all
doors and the engine hood operate prop-
erly. Also ensure that all latches lock se-
curely. Lubricate hinges, latches, rollers and
links if necessary. Make sure that the sec-
ondary 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*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.
INSIDE THE VEHICLE
The maintenance items listed here should
be checked on a regular basis, such as
when performing periodic maintenance,
cleaning the vehicle, etc.
Additional information on the following
items with ``*'' is found in the ``Do-it-
yourself operations'' section.
Warning lights and chimesMake sure all
warning lights and chimes are operating
properly.
Windshield wiper and washer*Check that
the wipers and washer operate properly and
that the wipers do not streak.
Windshield defrosterCheck that the air
comes out of the defroster outlets properly
and in sufficient quantity when operating the
heater or air conditioner.
Steering wheelCheck for changes in the
steering conditions, such as excessive free-
play, hard steering or strange noises.SeatsCheck seat position controls such as
seat adjusters, seatback recliner, etc. to
ensure they operate smoothly and all
latches lock securely in every position.
Check that the head restraints move up and
down smoothly and the locks (if so
equipped) hold securely in all latched posi-
tions.
Seat beltsCheck that all parts of the seat
belt system (e.g., 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 pedalCheck 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 oper-
ates smoothly and check that it has the
proper free travel.
BrakesCheck 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 de-
pressed fully. Check the brake booster func-
8-3
ZX

tion. Be certain to keep floormats away from
the pedal.
Parking brake*Check that the lever has
the proper travel and confirm that your
vehicle is held securely on a fairly steep hill
with only the parking brake applied.
Automatic transmission Park position
mechanismCheck that the lock release
button on the selector lever operates prop-
erly and smoothly. On a fairly steep hill
check that your vehicle is held securely with
the selector lever in the P position without
applying any brakes.
UNDER THE HOOD AND
VEHICLE
The maintenance items listed here should
be checked periodically (e.g., each time you
check the engine oil or refuel).
Additional information on the following
items with ``*'' is found in the ``Do-it-
yourself operations'' section.
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 hosesCheck the front of the
radiator and clean off any dirt, insects,
leaves, etc., that may have accumulated.
Make sure the hoses have no cracks, de-
formation, rot or loose connections.
Brake and clutch fluid levels*Make sure
that the brake and clutch fluid level is be-
tween the MAX and MIN lines on the reser-
voir.
Battery*Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Engine drive belts*Make sure 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.
Power steering fluid level* and lines
Check the level when the fluid is cold and
the engine is turned off. Check the lines for
proper attachment, leaks, cracks, etc.
Automatic transmission fluid level*
Check the level after putting the selector
lever in P with the engine idling.
Exhaust systemMake sure there are no
loose supports, cracks or holes. If the sound
of the exhaust seems unusual or there is asmell of exhaust fumes, immediately locate
the trouble and correct it. (See the carbon
monoxide warning in the ``Starting and driv-
ing'' section.)
UnderbodyThe 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 sub-
stances, otherwise rust will form on the floor
pan, frame, fuel lines and around the ex-
haust 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 accu-
mulate. See the ``Appearance and interior
care'' section for additional information.
Fluid leaksCheck under the vehicle for
fuel, oil, 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 or if
gasoline fumes are evident, check for the
cause and have it corrected immediately.
8-4
ZX