engine NISSAN PATHFINDER 2003 R50 / 2.G Service Manual

Make sure the area around the vehicle is
clear.

Check fluid levels such as engine oil, coolant,
brake and clutch fluid, window washer fluid
as frequently as possible, at least whenever
you refuel.

Check to be sure that all windows and light
lenses are clean.

Visually inspect tires for their appearance and
condition. Also check tires for proper infla-
tion.

Lock all doors.

Position seat and adjust head restraints.

Adjust inside and outside mirrors.

Fasten seat belts and ask all passengers to
do likewise.

Check the operation of warning lights when
key is turned to the ON (3) position.1. Apply the parking brake.
2.Automatic transmission:
Move the selector lever to P (Park position) or
N (Neutral position). (P preferred)
The selector lever cannot be moved out
of P and into any of the other gear
positions if the ignition key is turned to
LOCK or if the key is removed from the
switch.
The starter is designed not to operate if
the selector lever is in one of the driving
positions.
Manual transmission:
Move the gearshift lever to N (Neutral posi-
tion), and depress the clutch pedal to the
floor while starting the engine.
The starter is designed not to operate
unless the clutch pedal is fully de-
pressed.
3. Crank the enginewith your foot off the
accelerator pedalby turning the ignition
key to START. Release the key when the
engine starts. If the engine starts, but fails to
run, repeat the above procedure.

If the engine is very hard to start in extremely
cold weather or when restarting, depress theaccelerator pedal a little (approximately 1/5
to the floor) and hold it then crank the engine.
Release the key and the accelerator pedal
when the engine starts.

If the engine is very hard to start because it is
flooded, depress the accelerator pedal all the
way to the floor and hold it. Crank the engine
for 5 to 6 seconds. After cranking the engine,
release the accelerator pedal. Crank the en-
ginewith your foot off the accelerator
pedalby turning the ignition key to START.
Release the key when the engine starts. If the
engine starts, but fails to run, repeat the
above procedure.
CAUTION
Do not operate the starter for more than
15 seconds at a time. If the engine does
not start, turn the key off and wait 10
seconds before cranking again, other-
wise the starter could be damaged.
4.Warm-up
Always allow the engine to idle for at least 30
seconds after starting. Drive at moderate
speed for a short distance first, especially in
cold weather.
BEFORE STARTING THE ENGINE STARTING THE ENGINE5-10
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AUTOMATIC TRANSMISSIONThe automatic transmission in your vehicle is
electronically controlled by a transmission con-
trol module to produce maximum power and
smooth operation.
Shown on the following pages are the recom-
mended operating procedures for this transmis-
sion. Follow these procedures for maximum ve-
hicle performance and driving enjoyment. If your
vehicle is equipped with four wheel drive, see
“Using four wheel drive” later in this section.

After starting the engine, fully depress the
foot brake pedal and push the selector lever
button before shifting the selector lever to the
R, N, D, 2 or 1 position. Be sure the vehicle is
fully stopped before attempting to shift the
selector lever.
This automatic transmission is designed
so that the foot brake pedal MUST be
depressed before shifting from P to any
drive position while the ignition switch is
ON.
The selector lever cannot be moved out of
P and into any of the other gear positions if
the ignition key is turned to LOCK or if the
key is removed from the switch.
1. Keep the foot brake pedal depressed andpush the selector lever button to shift into a
driving gear.
2. Release the parking brake and foot brake,
then gradually start the vehicle in motion.
WARNING

Do not depress the accelerator pedal
while shifting from P or Nto R, D, 2 or
1. Always depress the brake pedal
until shifting is completed. Failure to
do so could cause you to lose control
and have an accident.

Cold engine idle speed is high, so use
caution when shifting into a forward
or reverse gear before the engine has
warmed up.

Never shift to P or R while the vehicle
is moving forward. Never shift to P or
D while vehicle is moving rearward.
These could cause an accident.

On slippery roads, do not downshift.
This may cause a loss of control.
CAUTION
When stopping the vehicle on an uphill
grade, do not hold the vehicle by de-
pressing the accelerator pedal. The foot
brake should be used for this purpose.
DRIVING THE VEHICLE
Starting and driving
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ShiftingPush the button to shift into P, R or from D to 2.
All other positions can be selected without
pushing the button.
P (Park):
Use this selector position when the vehicle is
parked or when starting the engine. Make sure
the vehicle is completely stopped.The brake
pedal must be depressed and the selector
lever button pushed in to move the selec-
tor lever from N(Neutral) or any drive
position to P (Park).Apply the parking brake.
When parking on a hill, apply the parking brakefirst, then move the lever to the P (Park) position.
R (Reverse):
Use this position to back up. Always be sure the
vehicle is completely stopped before selecting R
(Reverse).The brake pedal must be de-
pressed and selector lever button pushed
in to move the selector lever from P (Park),
N(Neutral) or any drive position to R (Re-
verse).
N(Neutral):
Neither forward nor reverse gear is engaged.
The engine can be started in this position. You
may shift to N and restart a stalled engine while
the vehicle is moving.
D (Drive):
Use this position for all normal forward driving.
2 (Second gear):
Use for hill climbing, effective engine braking on
downhill grades or starting on slippery roads.
Do not downshift into the 2 position at speeds
over the following speeds and do not exceed the
following speeds in the 2 position:
Two wheel drive:
60 MPH (95 km/h)Four wheel drive:
(Part time)
2H and 4H positions 50 MPH (80 km/h)
4L position 19 MPH (30 km/h)
(All-mode)
2WD and AUTO positions
60 MPH (95 km/h)
4H position 50 MPH (80 km/h)
4LO position 22 MPH (35 km/h)
1 (Low gear):
Use this position when climbing steep hills
slowly or driving slowly through deep snow,
sand or mud, or for maximum engine braking on
steep downhill grades.
Do not shift into 1 position at speeds over the
following speeds:
Two wheel drive:
60 MPH (95 km/h)
Four wheel drive:
(Part time)
2H and 4H positions 50 MPH (80 km/h)
4L position 19 MPH (30 km/h)
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Shift lock releaseIf the battery charge is low, the select lever may
not be moved from the P position even with the
brake pedal depressed and the select lever
button pushed.
To move the select lever, remove the shift lock
cover using a flat-bladed screwdriver, and push
the shift lock release button and select lever
button with the parking brake securely applied
and the brake pedal firmly depressed. The select
lever can be moved to N (Neutral).
To push the shift lock release button, follow the
procedure as illustrated.
If the lever cannot be moved out of P (Park) have
your NISSAN dealer check the automatic trans-
mission system as soon as possible.
WARNING
If the selector lever cannot be moved
from the P position while the engine is
running and the brake pedal is de-
pressed, the stop lights may not work.
Malfunctioning stop lights could cause
an accident injuring yourself and others.
Accelerator downshift
— In D position —For rapid passing or hill climbing, fully depress
the accelerator pedal to the floor. This shifts the
transmission down into second gear or first gear,
depending on the vehicle speed.
Overdrive switchEach time your vehicle is started, the transmis-
sion is automatically reset to overdrive on.
ON: For normal driving the overdrive switch
is engaged. The transmission is up-
shifted into overdrive as the vehicle
speed increases.
The overdrive does not engage until the
engine has warmed up.
OFF: For driving up and down long slopes
where engine braking would be advan-
tageous, push the overdrive switch. The
O/D OFF light illuminates. When cruis-
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ing at a low speed or climbing a gentle
slope, you may feel uncomfortable shift
shocks as the transmission shifts be-
tween 3rd and overdrive repeatedly. In
this case, press the overdrive switch.
The O/D OFF indicator light comes on
at this time.
When driving conditions change, press the over-
drive switch again. The O/D OFF indicator light
goes out.
Remember not to drive at high speeds for ex-
tended periods of time with the O/D OFF light
illuminated. This reduces the fuel economy.
Fail-safeWhen the Fail-safe operation occurs, the next
time the key is turned to the ON position, the
O/D OFF light will blink for approximately 8
seconds after coming on for 2 seconds. While
the vehicle can be driven under these circum-
stances please note that the gears in the auto-
matic transmission may be locked in third gear.
If the vehicle is driven under extreme con-
ditions, such as excessive wheel spinning
and subsequent hard braking, the Fail-safe
system may be activated. This will occur
even if all electrical circuits are functioning
properly. In this case, turn the ignition key
OFF and wait for 3 seconds. Then turn thekey back to the ONposition. The vehicle
should return to its normal operating con-
dition. If it does not return to its normal
operating condition have your NISSAN
dealer check the transmission and repair if
necessary.
MANUAL TRANSMISSION
Shifting
WARNING

Do not downshift abruptly on slip-
pery roads. This may cause a loss of
control.

Do not over-rev the engine when
shifting to a lower gear. This may
cause a loss of control or engine
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Starting and driving
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damage.
To change gears, or when up shifting or down
shifting, depress the clutch pedal fully, shift into
the appropriate gear, then release the clutch
slowly and smoothly.
Start the vehicle in 1st gear and shift to 2nd, 3rd
and 4th up to 5th gear in sequence according to
the vehicle speed.
You cannot shift directly from 5th gear into
Reverse. First shift into the Neutral position, then
into Reverse.
If it is difficult to move the shift lever into Reverse
or 1st, shift into Neutral, then release the clutch
pedal and shift into Reverse or 1st again. If your
vehicle is equipped with four wheel drive, see
“Using four wheel drive” later in this section.
Suggested up-shift speedsThe table below provides suggested speed
ranges for shifting into a higher gear. These
suggestions relate to fuel economy and vehicle
performance. Actual shift ranges should be ad-
justed for specific road conditions, weather con-
ditions and individual driving habits.

Two wheel drive models and four wheel drive
models (2H and 4H position)MPH (km/h)
1st to 2nd 15 (24)
2nd to 3rd 25 (40)
3rd to 4th 40 (64)
4th to 5th 45 (72)

Four wheel drive model (4L position)
MPH (km/h)
1st to 2nd 8 (13)
2nd to 3rd 12 (20)
3rd to 4th 20 (32)
4th to 5th 22 (36)
Suggested maximum speed in each
gearDownshift to a lower gear if the engine is not
running smoothly, or if you need to accelerate.
Do not exceed the maximum suggested speed
(shown below) in any gear. For level road driving,
use the highest gear suggested for that speed.
Always observe posted speed limits, and drive
according to the road conditions which will
ensure safe operation. Do not overrev the engine
when shifting to a lower gear as it may cause
engine damage or loss of vehicle control.Allowable maximum speed in each gear
Two wheel drive models and four wheel drive
models (2H position) MPH (km/h)
1st 22 (36)
2nd 37 (60)
3rd 56 (90)
4th & 5th — (—)
Four wheel drive models MPH (km/h)
4H position
1st 22 (36)
2nd 37 (60)
3rd 50 (80)
4th & 5th 50 (80)
4L position
1st 9 (15)
2nd 19 (30)
3rd 28 (45)
4th & 5th 31 (50)
CAUTION

Do not rest your foot on the clutch
pedal while driving. This may cause
clutch damage.

Stop your vehicle completely before
shifting into R (Reverse).
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WARNING
Do not use the cruise control when driv-
ing under the following conditions:

when it is not possible to keep the
vehicle at a set speed.

in heavy traffic or in traffic that varies
in speed.

on winding or hilly roads.

on slippery roads (rain, snow, ice,
etc.)

in very windy areas.
Doing so could cause a loss of vehicle
control and result in an accident.
CAUTION
On manual transmission models, do not
shift into N(Neutral) without depressing
the clutch pedal when the cruise control
is set. Should this occur, depress the
clutch pedal and turn the main switchoff immediately. Failure to do so may
cause engine damage.
PRECAUTIONS ON CRUISE
CONTROL
If the engine coolant temperature becomes
excessively high, the cruise control system
will automatically be canceled.

If the cruise control system malfunctions, it
cancels automatically. The SET indicator light
in the instrument panel then blinks to warn
the driver.

If the SET indicator light blinks, turn the
cruise control main switch off and have the
system checked by your NISSAN dealer.

The SET indicator light may blink when the
cruise control main switch is turned on while
pushing the RES/ACCEL, COAST/
SET, or CANCEL switch (located on the
steering wheel). To properly set the cruise
control system, perform the preceding steps
in the order indicated.
CRUISE CONTROL OPERATIONSThe cruise control allows driving at a fixed speed
between 25 to 89 MPH (40 to 144 km/h)
without keeping your foot on the accelerator
pedal.
To turn on the cruise control,push the main
switch on. The CRUISE indicator light on the
meter panel will come on.
To set at cruising speed,accelerate your
vehicle to the desired speed, push the
SET/COAST switch and release it. (The SET
light will come on.) Take your foot off the accel-
SSD0236A
CRUISE CONTROL (if so
equipped)5-18
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If the cruise control system malfunctions, it
will cancel automatically. The SET indicator in
the meter assembly will then blink to warn the
driver.

When the SET indicator blinks, turn the
cruise control switch (Main switch) OFF and
have the system checked by your NISSAN
dealer.During the first 1,200 miles (2,000 km), follow
these recommendations to obtain maximum en-
gine performance and ensure the future reliability
and economy of your new vehicle. Failure to
follow these recommendations may result in
shortened engine life and reduced engine per-
formance.

Avoid driving for long periods at constant
speed, either fast or slow. Do not run the
engine over 4,000 rpm.

Do not accelerate at full throttle in any gear.

Avoid quick starts.

Avoid hard braking as much as possible.

Do not tow a trailer for the first 500 miles
(800 km).
Accelerate slowly and smoothly. Maintain
cruising speeds with a constant accelerator
position.

Drive at moderate speeds on the highway.
Driving at high speed will lower fuel economy.

Avoid unnecessary stopping and braking.
Maintain a safe distance behind other ve-
hicles.

Use a proper gear range which suits road
conditions. On level roads, shift into high gear
as soon as possible.

Avoid unnecessary engine idling.

Keep your engine tuned up.
SD0001
BREAK-IN SCHEDULE INCREASING FUEL ECONOMY
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TO SHIFT
TRANSFER CASE:AUTOMATIC TRANSMISSION MODELS SHIFT PROCEDURE
From 2H to 4HMove the transfer lever to 4H. This can be done at any speed up to 50 MPH (80 km/h), and it is not necessary to move the selector lever
to the N position. Perform this operation when driving straight.
From 4H to 2HMove the transfer lever to 2H. This can be done at any speed up to 50 MPH (80 km/h), and it is not necessary to move the selector lever
to the N position. Perform this operation when driving straight.
From 4H or 4L to 4L or
4H1. Stop the vehicle.
Keep the engine running.
2. Move the selector lever to the N position.
3. Depress the transfer lever and move it to the desired 4L or 4H position.
From 2H to 4L1. Stop the vehicle.
Keep the engine running.
2. Move the selector lever to the N position.
3. Depress the transfer lever and move it to 4L. Change gears quickly and smoothly.
From 4L to 2H1. Stop the vehicle.
Keep the engine running.
2. Move the selector lever to the N position.
3. Depress the transfer lever and move it to 2H.
When moving the transfer lever from 4H or 4L to 4L or 4H, you must always move it quickly through the N position. If you are slow to shift, the engine idle speed
will allow the transfer gears to speed up and gear clashing will occur.
Do not move the transfer lever from 4H or 4L to 4L or 4H, from 2H to 4L and from 4L to 2H with the engine turned off. Otherwise, you will have difficulty moving
the transfer lever to the desired position.
Do not leave the transfer lever in the N position with the engine running. Stopping in the N position of the transfer case may cause gear grinding when selecting
another gear. Changing the transfer case gear quickly and smoothly will eliminate this.5-24
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*1:
The transfer 4LO position indicator light
may blink. Stop the vehicle. Be sure to
shift the 4WD shift switch after the auto-
matic transmission lever has been shifted
to the N position. If the indicator light
keeps blinking after the 4WD shift proce-
dure in the previous page, drive slowly
without abrupt maneuvers for a while.
Then the light will turn on or off.

Avoid making a turn or abrupt starts while
shifting to 4LO. Otherwise gears may
grind, damaging the drive system.
*2: Make sure the transfer 4LO position indicator
light turns on when you shift the 4WD shift
switch to 4LO.
The transfer case 4WD shift switch is used to
select either 2WD or 4WD depending on the
driving conditions. There are four types of drive
modes available, AUTO, 2WD, 4H and 4LO.
The 4WD shift switch electronically controls the
transfer case operation. Rotate the switch to
move between each mode, 2WD, AUTO, 4H
and 4LO.
You must push the switch in to select 4LO,
and the vehicle MUST be stationary and
the automatic transmission selector lever
is in the Nposition when changing into or
out of 4LO.
WARNING
When parking, apply the parking brake
before stopping the engine and make
sure that the 4WD shift indicator light is
on and the ATP warning light goes off.
Otherwise, the vehicle could unexpect-
edly move even if the automatic trans-
mission is in the P position.
CAUTION

Never shift the 4WD shift switch be-
tween 4LO and 4H while driving.

The 4H position provides greater
power and traction. Avoid excessive
speed, as it will cause increased fuel
consumption and higher oil tempera-
ture, and could damage drivetrain
components. Speeds over 50 MPH
(80 km/h) in 4H are not recom-
mended.

The 4LO position provides maximum
power and traction. Avoid raising ve-hicle speed excessively, as the maxi-
mum speed is approximately 30 MPH
(50 km/h).

When driving straight, shift the 4WD
shift switch to the 2WD, AUTO or 4H
position. Do not move the 4WD shift
switch when making a turn or revers-
ing.

Do not shift the 4WD shift switch
(between 2WD, AUTO and 4H) while
driving on steep downhill grades. Use
the engine brake.

Do not operate the 4WD shift switch
(between 2WD, AUTO and 4H) with
the rear wheels spinning.

Do not drive on dry hard surface
roads in the 4H or 4LO position. Driv-
ing on dry hard surfaces in 4H or 4LO
may cause unnecessary noise and
tire wear. We recommend driving in
the 2WD or AUTO position under
these conditions.

Vehicles equipped with a limited slip
differential (LSD) have improved driv-
Starting and driving
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