2003 NISSAN PATHFINDER check engine light

LOW TIRE PRESSURE WARNING
SYSTEM (if so equipped)The low tire pressure warning system monitors
tire pressure of all wheels (except the spare tire).
If the vehicle is being driven with very low tire
pressure (lower than 25 psi, 171 kPa), the low
tire pressure warning system will activate and
warn you of it by the low tire pressure warning
light. This system will activate only when the
vehicle is driven at speeds above 20 MPH (32
km/h). For more details, please refer to
“Warning/indicator lights and audible remind-
ers” in the “2. Instruments and controls” section,
and “Low tire pressure warning system” in the
“5. Starting and driving” section.
WARNING

If the low tire pressure warning light
illuminates while driving, avoid sud-
den steering maneuvers or abrupt
braking, reduce vehicle speed, pull
off the road to a safe location and
stop the vehicle as soon as possible.
Serious vehicle damage could occur
and may lead to an accident and
could result in serious personal in-jury. Check the tire pressure for all
four wheels and adjust the pressure
to the COLD tire pressure shown on
the tire placard. If you have a flat tire,
replace it with a spare tire as soon as
possible.

When a spare tire is mounted or a
wheel is replaced, the low tire pres-
sure warning system will not func-
tion. Contact your NISSAN dealer as
soon as possible for tire replacement
and/or system resetting.

Do not inject any tire liquid or aerosol
tire sealant into the tires, as this may
cause a malfunction of the tire pres-
sure sensors.
CHANGING A FLAT TIREIf you have a flat tire, follow the instructions
below.Stopping the vehicle1. Safely move the vehicle off the road away
from traffic.
2. Turn on the hazard warning flasher.3. Park on a level surface and apply the parking
brake. Shift the manual transmission into
reverse (automatic transmission in P).
WARNING


The transfer control lever
must be in the 2H, 4H or 4L position.

Never place the transfer control lever
in the Nposition. Otherwise, the ve-
hicle could roll unexpectedly even if
the manual transmission is in gear or
the automatic transmission is in the
P position. This could result in seri-
ous personal injury or property dam-
age.
All-mode 4WD models:

Make sure the 4WD shift indicator
and/or transfer 4LO position indica-
tor light remains illuminated before
stopping the engine.

Make sure the ATP light is off before
stopping the engine. Otherwise, the
vehicle could roll unexpectedly even
if the automatic transmission is in
FLAT TIRE6-2
In case of emergency


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8 Maintenance and do-it-yourselfMaintenance requirements .................................................. 8-2
General maintenance ............................................................ 8-2
Explanation of general maintenance items ................ 8-2
Maintenance precautions ..................................................... 8-5
Engine compartment check locations .............................. 8-7
Engine cooling system.......................................................... 8-9
Checking engine coolant level...................................... 8-9
Changing engine coolant ............................................ 8-10
Engine oil ............................................................................... 8-13
Checking engine oil level ............................................ 8-13
Changing engine oil ...................................................... 8-14
Changing engine oil filter ............................................ 8-15
Automatic transmission fluid ............................................. 8-16
Temperature conditions for checking ....................... 8-17
Power steering fluid ............................................................ 8-18
Brake and clutch fluid ........................................................ 8-19
Brake fluid ....................................................................... 8-19
Clutch fluid ...................................................................... 8-19
Window washer fluid.......................................................... 8-20
Window washer fluid reservoir .................................. 8-20
Battery .................................................................................... 8-21
Jump starting .................................................................. 8-21
Drive belts ............................................................................. 8-22
Spark plugs ........................................................................... 8-23Replacing spark plugs.................................................. 8-23
Air cleaner ............................................................................. 8-23
Windshield wiper blades ................................................... 8-24
Cleaning ........................................................................... 8-24
Replacing ......................................................................... 8-24
Parking brake and brake pedal ........................................ 8-25
Checking parking brake ............................................... 8-25
Checking brake pedal .................................................. 8-26
Brake booster ................................................................. 8-26
Fuses ...................................................................................... 8-27
Engine compartment ..................................................... 8-27
Passenger compartment .............................................. 8-28
Keyfobbattery replacement ........................................ 8-28
Lights ...................................................................................... 8-30
Headlights ....................................................................... 8-31
Wheels and tires ................................................................. 8-34
Tire pressure ................................................................... 8-34
Types of tires .................................................................. 8-35
Tire chains ....................................................................... 8-36
Changing wheels and tires ......................................... 8-37


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Wheel nuts*:
When checking the tires, 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). However, the timing for tire rotation
may vary according to your driving habits and
road surface conditions.
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 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 wind-
shield repaired by a qualified repair facility.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 oper-
ate properly. Also ensure that all latches lock
securely. Lubricate hinges, latches, 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 operat-
ing properly and installed securely. Also check
headlight aim.
Inside the vehicleThe maintenance items listed here should be
checked on a regular basis, such as when
performing periodic maintenance, cleaning the
vehicle, etc.Warning lights and chimes:
Make sure that 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 defroster:
Check that the air comes out of the defroster
outlets properly and in sufficient quantity when
operating the heater or air conditioner.
Steering wheel:
Check for changes in the steering conditions,
such as excessive freeplay, hard steering or
strange noises.
Seats:
Check seat position controls such as seat ad-
justers, seatback recliner, etc. to ensure they
operate smoothly and that all latches lock se-
curely 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.
Seat belts:
Check that all parts of the seat belt system (e.g.
buckles, anchors, adjusters and retractors) op-
Maintenance and do-it-yourself
8-3


03.1.28/R50-D/V5


CAUTION
Be careful not to burn yourself, as the
engine oil may be hot.
4. Wipe the engine oil filter mounting surface
with a clean rag.
Be sure to remove any old rubber gasket
remaining on the mounting surface of the
engine.
5. Coat the rubber gasket on the new filter with
engine oil.6. Screw in the oil filter until a slight resistance
is felt, then tighten an additional 2/3 turn.
Oil filter tightening torque:
10.85 to 15.12 ft-lb
(14.7 to 20.5 N⋅m)
7. Start the engine and check for leakage
around the oil filter. Correct as required.
8. Turn the engine off and wait several minutes.
Check the oil level. Add engine oil if neces-
sary.
WARNING

When engine is running, keep hands,
jewelry, and clothing away from any
moving parts such as fan and drive
belt.

Automatic transmission fluid is poi-
sonous and should be stored care-
fully in marked containers out of the
reach of children.
SDI0417
SDI1120
AUTOMATIC TRANSMISSION
FLUID
8-16
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03.1.28/R50-D/V5


WINDOW WASHER FLUID
RESERVOIR
For USTo check the fluid level, use your finger to plug
the center hole of the cap/tube assembly (as
shown above), then remove it from the tank. If
there is no fluid in the tube, add fluid. Add a
washer solvent to the water for better cleaning.
In the winter season, add a windshield washer
anti-freeze. Follow the manufacturer’s instruc-
tions for the mixture ratio.
For CANADAAdd fluid when the low washer fluid warning light
comes on. Add a washer solvent to the water for
better cleaning. In the winter season, add a
windshield washer anti-freeze. Follow the manu-
facturer’s instructions for the mixture ratio.
CAUTION
Do not substitute engine anti-freeze
coolant for window washer solution.
This may result in damage to the paint.
WARNING
Anti-freeze is poisonous and should be
stored carefully marked containers out
of the reach of children.
SDI0423A
SDI0389
WINDOW WASHER FLUID8-20
Maintenance and do-it-yourself


03.1.28/R50-D/V5


CHECKING BRAKE PEDALWith the engine running, check distance A
between the upper surface of the pedal and the
dash lower panel.
Distance A
M/T models
2-1/2 in (65 mm) or more
A/T models
2-3/4 in (70 mm) or more
If it is out of the range shown above, see your
NISSAN dealer.
Self-adjusting brakesYour vehicle is equipped with self-adjusting
brakes.
The front and rear brakes self-adjust every time
the brake pedal is applied.
WARNING
See your NISSAN dealer and have it
checked if the brake pedal height does
not return to normal.Brake pad wear indicatorsThe disc brake pads on your vehicle have au-
dible wear indicators. When a brake pad re-
quires 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 brakes checked as soon as
possible if the wear indicator sound is heard.
Under some driving or climate conditions, occa-
sional brake squeak, squeal or other noise may
be heard. Occasional brake noise during light to
moderate stops is normal and does not affect
the function or performance of the brake system.
The rear drum brakes (if so equipped) do nothave audible wear indicators. Should you ever
hear an unusually loud noise from the rear drum
brakes, have them inspected as soon as pos-
sible by your NISSAN dealer.
Proper brake inspection intervals should
be followed.For additional information, see the
separate “Service and Maintenance Guide”.
BRAKE BOOSTERCheck the brake booster function with the fol-
lowing 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 the 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 de-
pressing the brake pedal, then turn it off.
Depress the brake pedal several times. The
pedal travel distance will decrease gradually
with each depression as the vacuum is re-
leased from the booster.
DI0453
8-26
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If the brakes do not operate properly, have the
brake checked by your NISSAN dealer.
ENGINE COMPARTMENT
CAUTION
Never use a fuse of higher amperage
rating than that specified on the fuse
box cover. This could damage the elec-
trical system or cause a fire.
If any electrical equipment does not operate,
check for an open fuse.
1. Be sure the ignition key and the headlight
switch are OFF.2. Open the engine hood.
3. Remove the fuse box cover.
4. Remove the fuse with the fuse puller.
5. If the fuse is open, replace it with a new fuse.
6. If a new fuse opens again, have the electrical
system checked and repaired by your
NISSAN dealer.
Fusible linksIf any electrical equipment does not operate and
fuses are in good condition, check the fusible
links. If any of these fusible links are melted,
replace only with genuine NISSAN parts.
SDI0395
FUSES
Maintenance and do-it-yourself
8-27


03.1.28/R50-D/V5


which are sold commercially. Many of these
additives intended for gum, varnish or deposit
removal may contain active solvents or similar
ingredients that can be harmful to the fuel sys-
tem and engine.Octane rating tipsIn most parts of North America, you should use
unleaded gasoline with an octane rating of at
least 91 AKI (Anti-Knock Index) number
(VQ35DE engine) or 87 AKI (Anti-knock Index)
number (VG33E engine). However, you may use
unleaded gasoline with an octane rating as low
as 85 AKI (Anti-Knock Index) number in these
high altitude areas [over 4,000 ft (1,219 m)]
such as: Colorado, Montana, New Mexico, Utah,
Wyoming, northeastern Nevada, southern Idaho,
western South Dakota, western Nebraska, and
that part of Texas which is directly south of New
Mexico.
Using unleaded gasoline with an octane
rating lower than stated above can cause
persistent, heavy spark knock. (Spark
knock is a metallic rapping noise.) If se-
vere, this can lead to engine damage. If you
detect a persistent heavy spark knock even
when using gasoline of the stated octane
rating, or if you hear steady spark knock
while holding a steady speed on level
roads, have your dealer correct the condi-tion. Failure to correct the condition is
misuse of the vehicle, for which NISSAN is
not responsible.
Incorrect ignition timing will result in knocking,
after-run or overheating. This in turn may cause
excessive fuel consumption or damage to the
engine. If any of the above symptoms are en-
countered, have your vehicle checked at a
NISSAN dealer or other competent service fa-
cility.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is no
cause for concern, because you get the
greatest fuel benefit when there is light
spark knock for a short time.
Technical and consumer information
9-5


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