2003 NISSAN PATHFINDER service

REPLACING SPARK PLUGS
WARNING
Be sure the engine and ignition switch
are off and that the parking brake is
engaged securely.
CAUTION
Be sure to use the correct socket toremove the spark plugs. An incorrect
socket can cause damage the spark
plugs.
Platinum-tipped spark plugsIt is not necessary to replace the platinum-
tipped spark plugs as frequently as the conven-
tional type spark plugs since they will last much
longer. Follow the maintenance schedule, but do
not reuse them by cleaning or regapping.
If replacement is required, see your NISSAN
dealer for servicing.
Always replace with recommended
platinum-tipped spark plugs.The filter element should not be cleaned and
reused as it is given a special treatment. We
recommended it be replaced according to the
maintenance log shown in a separate “Service
and Maintenance Guide”. When replacing the
filter, wipe the inside of the air cleaner housing
and the cover with a damp cloth.
WARNING

Operating the engine with the air
cleaner removed can cause you or
others to be burned. The air cleaner
SDI0145A
SDI1022A
SDI1115B
SPARK PLUGS AIR CLEANER
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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
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03.1.28/R50-D/V5


indicator is visible, the tire should be
replaced.

Improper service for a TEMPORARY
USE ONLY spare tire may result in
serious personal injury. If it is neces-
sary to repair the TEMPORARY USE
ONLY spare tire, contact your
NISSAN dealer.

For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or “Tire Safety In-
formation” (Canada) in the Warranty
Information booklet.
Replacing wheels and tiresWhen replacing a tire, use the same size, speed
rating and load carrying capacity as originally
equipped. See “Specifications” in the “9. Tech-
nical and consumer information” section for tires
and wheels.
WARNING

The use of tires other than those
recommended or the mixed use of
tires of different brands, construction
(bias, bias-belted or radial), or tread
patterns can adversely affect the ride,
braking, handling, ground clearance,
body-to-tire clearance, tire chain
clearance, speedometer calibration,
headlight aim and bumper height.
Some of these effects may lead to
accidents and could result in serious
personal injury.

If the wheels are changed for any
reason, always replace with wheels
which have the same offset dimen-
sion. Wheels of a different offset
could cause early tire wear, possibly
degraded vehicle handling character-
istics and/or interference with the
brake discs. Such interference can
lead to decreased braking efficiency
and/or early brake pad wear.

When a spare tire is mounted or awheel 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. (For models
with the low tire pressure warning
system)

Do not install a deformed wheel or
tire even if it has been repaired. Such
wheels or tires could have structural
damage and could fail without warn-
ing.

The use of a retread tire is not rec-
ommended.

For additional information regarding
tires, refer to “Important Tire Safety
Information” (US) or “Tire Safety In-
formation” (Canada) in the Warranty
Information booklet.
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Four wheel drive models
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 dam-
age the transmission, transfer case and
differential gears.
If excessive tire wear is found, it is recommended
that all four tires be replaced with tires of the
same size, brand, construction and tread pat-
tern. The tire pressure and wheel alignment
should also be checked and corrected as nec-
essary. Contact your NISSAN dealer.Wheel balanceUnbalanced wheels may affect vehicle handling
and tire life. Even with regular use, wheels can
get out of balance. Therefore, they should be
balanced as required.
Wheel balance service should be performed
with the wheels off the vehicle. Spin balancingthe rear wheels on the vehicle could lead to
transmission damage.

For additional information regarding tires, re-
fer to “Important Tire Safety Information” in
the Warranty Information Booklet (US) or
“Tire Safety Information” in the Warranty In-
formation Booklet (Canada).
Care of wheels
Wash the wheels when washing the vehicle
to maintain their appearance.

Clean the inner side of the wheels when the
wheel is changed or the underside of the
vehicle is washed.

Do not use abrasive cleaners when washing
the wheels.

Inspect wheel rims regularly for dents or
corrosion. This may cause loss of pressure or
damage the tire bead.

NISSAN recommends that the road wheels
be waxed to protect against road salt in areas
where it is used during winter.TEMPORARY USE ONLY spare tire
(if so equipped)U.S. only. Canadian vehicles are equipped with a
full size spare tire.Observe the following precautions if the TEM-
PORARY USE ONLY spare tire must be used,
otherwise your vehicle could be damaged or
involved in an accident.
WARNING

The TEMPORARY USE ONLY spare
tire should be used only for emer-
gency. It should be replaced by the
standard tire at the first opportunity.

Drive carefully while the TEMPO-
RARY USE ONLY spare tire is in-
stalled.
Avoid sharp turns and abrupt braking
while driving.

Periodically check the TEMPORARY
USE ONLY spare tire inflation pres-
sure, and always keep it at 60 psi (420
kPa, 4.2 bar).

Always keep the pressure of the full
size spare tire (if so equipped) at the
recommended pressure for standard
tires, as indicated on the tire placard.
For tire placard location, see “Tire
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9 Technical and consumer informationCapacities and recommended fuel/lubricants ................ 9-2
Fuel recommendation ...................................................... 9-4
Engine oil and oil filter recommendation.................... 9-6
Recommended SAE oil viscosity number.................. 9-7
Air conditioning system refrigerant and lubricant
recommendations ............................................................. 9-8
Specifications.......................................................................... 9-9
Engine ................................................................................. 9-9
Wheels and tires ................................................................. 9-11
Dimensions and weights.............................................. 9-11
When traveling or registering your vehicle in another
country.................................................................................... 9-12
Vehicle identification ........................................................... 9-12
Vehicle identification number (VIN) plate ................ 9-12
Vehicle identification number (Chassis
number) ............................................................................ 9-12
Engine serial number .................................................... 9-13
F.M.V.S.S. certification label ....................................... 9-13
Emission control information label ............................ 9-14
Tire placard ..................................................................... 9-14Air conditioner specification label ............................. 9-14
Vehicle loading information ............................................... 9-15
Terms ................................................................................ 9-15
Determining vehicle payload capacity ...................... 9-15
Securing the load .......................................................... 9-16
Loading tips .................................................................... 9-16
Payload weight capacity .............................................. 9-17
Measurement of weights ............................................. 9-17
Towing a trailer .................................................................... 9-17
Maximum load limits ...................................................... 9-17
Towing load/specification chart ................................. 9-19
Towing safety.................................................................. 9-19
Uniform tire quality grading ......................................... 9-21
Emission control system warranty ................................... 9-22
Reporting safety defects (US only) ................................ 9-22
Readiness for inspection/maintenance (I/M) test
(US only) ................................................................................ 9-23
Owner’s Manual/Service Manual order information ... 9-25
In the event of a collision ............................................ 9-25


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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.
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ing system service. Your NISSAN dealer has the
trained technicians and equipment needed to
recover and recycle your air conditioning system
refrigerant.
Contact your NISSAN dealer when servicing
your air conditioning system.9-8
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ENGINE
Model VQ35DE VG33E
Type Gasoline, 4-cycle Gasoline, 4-cycle
Cylinder arrangement 6-cylinder, V-slanted at 60° 6-cylinder, V-slanted at 60°
Bore×Stroke in (mm) 3.760×3.205 (95.5×81.4) 3.602×3.268 (91.5×83.0)
Displacement cu in (cm
3) 213.45 (3,498) 199.84 (3,275)
Firing order 1-2-3-4-5-6 1-2-3-4-5-6
Idle speed rpm
See the “Emission control
label” on the underside of the hood.See the “Emission control
label” on the underside of the hood. Ignition timing (BTDC) degree/rpm
CO percentage at idle speed [No air] %
Spark plug PL FR5A-11 (Standard) FR4AP-10 (Hot)
PL FR4A-11 (Service option) FR5AP-10 (Standard)
PL FR6A-11 (Service option) FR6AP-10 (Cold)
Spark plug gap in (mm) 0.043 (1.1) 0.039 (1.0)
Camshaft operation Timing chain Timing belt*1
Alternator belt size
Width×Length in (mm) 0.8409×46.26 (21.36×1,175) 0.8409×41.93 (21.36×1,065)
*1: Periodic maintenance is necessary. See “Periodic maintenance” in the “Service and Maintenance Guide” for maintenance intervals.
SPECIFICATIONS
Technical and consumer information
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