engine NISSAN FRONTIER 2015 D23 / 3.G Repair Manual

WARNING
Apply the parking brake if the shift lever is
in any position while the engine is not
running. Failure to do so could cause the
vehicle to move unexpectedly or roll away
and result in serious personal injury or
property damage.
If the ignition switch is placed in the OFF position
for any reason while the vehicle is in N (Neutral) ,
or any D (Drive) position, the ignition switch can-
not be placed in the LOCK position and the key
cannot be removed from the ignition switch.
Move the shift lever to the P (Park) position, then
the ignition switch can be placed in LOCK.
P (Park)
CAUTION
To prevent transmission damage, use the
P (Park) or R (Reverse) position only when
the vehicle is completely stopped.
Use the P (Park) shift lever position when the
vehicle is parked or when starting the engine.
Make sure the vehicle is completely stopped.
The brake pedal should be depressed to
move the shift lever from N (Neutral) or any
drive position to P (Park) . Apply the parkingbrake. When parking on a hill, apply the parking
brake first, then move the shift lever into the P
(Park) position.
R (Reverse)
CAUTION
To prevent transmission damage, use the
P (Park) or R (Reverse) position only when
the vehicle is completely stopped.
Use the R (Reverse) position to back up. Make
sure the vehicle is completely stopped before
selecting the R (Reverse) position. The brake
pedal must be depressed to move the shift
lever from P (Park) , N (Neutral) or any drive
position to R (Reverse) .
N (Neutral)
Neither forward nor reverse gear is engaged. The
engine can be started in this position. You may
shift to N (Neutral) and restart a stalled engine
while the vehicle is moving.
D (Drive)
Use this position for all normal forward driving.
3 (Third gear):
Use this position for driving up and down long
slopes where engine braking would be advanta-
geous. Do not downshift into the 3 position at speeds
over the following and do not exceed the follow-
ing speeds in the 3 position.
2WD:99 MPH (160 km/h)
4H: 93 MPH (150 km/h)
4LO: 34 MPH (55 km/h)
2 (Second gear):
Use this position for hill climbing or engine brak-
ing on downhill grades.
Do not downshift into the 2 position at speeds
over the following and do not exceed the follow-
ing speeds in the 2 position. 2WD:62 MPH (100 km/h)
4H: 59 MPH (95 km/h)
4LO: 21 MPH (35 km/h)
Starting and driving5-15

1 (Low gear):
Use this position when climbing steep hills slowly
or slow driving through deep snow, sand or mud,
or for maximum engine braking on steep downhill
grades.
Do not downshift into the 1 position at speeds
over the following and do not exceed the follow-
ing speeds in the 1 position.2WD:37 MPH (60 km/h)
4H: 37 MPH (60 km/h)
4LO: 12 MPH (20 km/h)
Shift lock release
If the battery is discharged, the shift lever may not
be moved from the P (Park) position even with the
brake pedal depressed.
To move the shift lever, release the shift lock. The
shift lever can be moved to N (Neutral) . However,
the steering wheel will be locked unless the igni-
tion switch is placed in the ON position (for
models with a steering lock mechanism) . This
allows the vehicle to be moved if the battery is
discharged. To push the shift lock release, complete the fol-
lowing procedure:
1. Place the ignition switch in the LOCK posi- tion and remove the key.
2. Apply the parking brake.
3. Remove the shift lock release cover as shown.
4. Use a protective cloth on the tip of a small screwdriver before inserting it in the shift
lock release slot and pushing down.
5. Move the shift lever to the N (Neutral) posi- tion while holding down the shift lock re-
lease.
6. Place the ignition switch in the ON position to unlock the steering wheel (for models with
a steering lock mechanism) .
7. Now the vehicle may be moved to the de- sired location.
If the shift lever cannot be moved out of P (Park) ,
have a NISSAN dealer check the automatic
transmission system as soon as possible.
LSD0141
5-16Starting and driving

WARNING
If the shift lever cannot be moved from the
P (Park) position while the engine is run-
ning and the brake pedal is depressed, the
stop lights may not work. Malfunctioning
stop lights could cause an accident injur-
ing yourself and others.
Accelerator downshift
— in D (Drive) position —
For passing or hill climbing, depress the accel-
erator pedal to the floor. This shifts the transmis-
sion down into a lower gear, depending on the
vehicle speed.
Overdrive (O/D) OFF switch
Each time your vehicle is started, the transmis-
sion is automatically “reset” to overdrive ON.
ON: With the engine running and theshift lever in the D (Drive) position,
the transmission upshifts into Over-
drive as vehicle speed increases.
Overdrive does not engage until the engine
has reached operating temperature.
OFF: For driving up and down longslopes where engine braking is nec-
essary push the Overdrive switch
once. The O/D OFF indicator light
in the instrument panel comes on at
this time.
When cruising at a low speed or climbing a
gentle slope, you may feel uncomfortable shift
shocks as the transmission shifts into and out of
Overdrive repeatedly. In this case, depress the
Overdrive switch to turn the Overdrive off. The
O/D OFF indicator light in the instrument panel
comes on at this time.
When driving conditions change, depress the
Overdrive switch to turn the Overdrive on.
Remember not to drive at high speeds for ex-
tended periods of time with the Overdrive off.
This reduces fuel economy.
LSD0142
Starting and driving5-17

MANUAL TRANSMISSION (if so
equipped)
WARNING
●Do not downshift abruptly on slippery
roads. This may cause a loss of control.
● Do not over-rev the engine when shift-
ing to a lower gear. This may cause a
loss of control or engine damage.
CAUTION
● Do not rest your foot on the clutch pedal
while driving. This may cause clutch
damage.
● Fully depress the clutch pedal before
shifting to help prevent transmission
damage.
● Stop your vehicle completely before
shifting into R (Reverse) .
● When the vehicle is stopped with the
engine running (for example, at a stop
light) , shift to N (Neutral) and release
the clutch pedal with the foot brake
applied.
Shifting
To change gears, or when upshifting or down-
shifting, depress the clutch pedal fully, shift into
the appropriate gear, then release the clutch
slowly and smoothly.
To ensure smooth gear changes, fully depress
the clutch pedal before operating the shift lever. If
the clutch pedal is not fully depressed before the
transmission is shifted, a gear noise may be
heard. Transmission damage could occur.
Start the vehicle in 1st gear and shift to 2nd, 3rd,
4th, 5th and 6th gear in sequence according to
vehicle speed. To back up depress the shift lever and then move
it to the R (Reverse) position after stopping the
vehicle completely.
On the 5-speed manual transmission model, you
cannot shift directly from the 5th gear into R
(Reverse) . First shift into N (Neutral) , then in to R
(Reverse) after stopping the vehicle completely.
If it is difficult to move the shift lever into R
(Reverse) or 1 (First) , shift into N (Neutral) , then
release the clutch pedal. Fully depress the clutch
pedal again and shift into R (Reverse) or 1 (First) .
If your vehicle is equipped with 4-wheel drive,
refer to “Transfer case shifting procedures” in this
section.
5 - speed
WSD0154
6 - speed
LSD0148
5-18Starting and driving

Suggested up-shift speeds
The following are suggested vehicle speeds for
shifting into a higher gear. These suggestions
relate to fuel economy and vehicle performance.
Actual upshift speeds will vary according to road
conditions, the weather and individual driving
habits.● For QR25DE 2-wheel drive models:
GEAR CHANGE MPH (km/h)
1st to 2nd 11 (17)
2nd to 3rd 15 (24)
3rd to 4th 24 (38)
4th to 5th 35 (56)
●For VQ40DE 4-wheel drive models and
4-wheel drive models (2H and 4H position):
GEAR CHANGE MPH (km/h)
1st to 2nd 11 (17)
2nd to 3rd 17 (27)
3rd to 4th 25 (40)
4th to 5th 32 (51)
5th to 6th 45 (72)
Suggested maximum speed in each
gear
Downshift 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 en-
sure safe operation. Do not over-rev 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:
2–wheel drive models (QR25DE engine)
GEARMPH (km/h)
1st 34 (54)
2nd 58 (94)
3rd 89 (144)
4th —
5th —
2–wheel drive models (VQ40DE engine)
GEARMPH (km/h)
1st 35 (56)
2nd 60 (97)
3rd 87 (141)
4th —
5th —
4–wheel drive models (VQ40DE engine)
2H/4H position
GEARMPH (km/h)
1st 33 (54)
2nd 58 (93)
3rd 84 (135)
4th —
5th —
6th —
4L position
GEARMPH (km/h)
1st 12 (20)
2nd 22 (35)
3rd 32 (51)
4th 43 (70)
5th 55 (89)
6th —
Starting and driving5-19

PRECAUTIONS ON CRUISE
CONTROL
1. ACCEL•RES switch
2. COAST•SET switch
3. CANCEL switch
4. ON•OFF switch● 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 a NISSAN dealer.
● The SET indicator light may blink when the
cruise control main switch is turned ON
while pushing the ACCEL•RES, COAST-
•SET, or CANCEL switch (located on the
steering wheel) . To properly set the cruise
control system, use the following proce-
dures.
WARNING
Do not use the cruise control when driving
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 switch off imme-
diately. Failure to do so may cause engine
damage.
CRUISE CONTROL OPERATIONS
The cruise control allows driving at a speed be-
tween 25 - 89 MPH (40 - 144 km/h) without
keeping your foot on the accelerator pedal.
To turn on the cruise control, push the main
switch. The CRUISE indicator light in the instru-
ment panel comes on.
To set cruising speed, accelerate the vehicle to
the desired speed, push the COAST/SET switch
and release it. The SET indicator light in the
instrument panel comes on. Take your foot off the
accelerator pedal. Your vehicle maintains the set
speed.
● To pass another vehicle, depress the ac-
celerator pedal. When you release the
pedal, the vehicle returns to the previously
set speed.
LSD2150
CRUISE CONTROL (if so equipped)
Starting and driving5-21

●The vehicle may not maintain the set speed
when going up or down steep hills. If this
happens, drive without the cruise control.
To cancel the preset speed, use one of the
following three methods.
● Push the CANCEL button; the SET indicator
light in the instrument panel goes out.
● Tap the brake pedal; the SET indicator light
goes out.
● Turn the main switch off. Both the CRUISE
indicator light and SET indicator light in the
instrument panel go out.
The cruise control is automatically canceled and
the SET light in the instrument panel goes out if: ● you depress the brake or clutch pedal while
pushing the ACCEL/RES or COAST/SET
switch. The preset speed is deleted from
memory.
● the vehicle slows down more than 8 MPH
(13 km/h) below the set speed.
● you depress the clutch pedal (manual trans-
mission) , or move the shift lever to N (Neu-
tral) (automatic transmission) . To reset at a faster cruising speed,
use one of
the following three methods.
● Depress the accelerator pedal. When the
vehicle attains the desired speed, push and
release the COAST/SET switch.
● Push and hold the ACCEL/RES switch.
When the vehicle attains the speed you de-
sire, release the switch.
● Push and release the ACCEL/RES switch.
Each time you do this, the set speed in-
creases by about 1 MPH (1.6 km/h).
To reset at a slower cruising speed, use one
of the following three methods.
● Lightly tap the brake pedal. When the ve-
hicle attains the desired speed, push the
COAST/SET switch and release it.
● Push and hold the COAST/SET switch. Re-
lease the switch when the vehicle slows to
the desired speed.
● Push and release the COAST/SET switch.
Each time you do this, the set speed de-
creases by about 1 MPH (1.6 km/h).
To resume the preset speed, push and re-
lease the ACCEL/RES switch. The vehicle re-
turns to the last set cruising speed when the
vehicle speed is over 25 MPH (40 km/h).CAUTION
During the first 1,200 miles (2,000 km),
follow these recommendations to obtain
maximum engine performance and ensure
the future reliability and economy of your
new vehicle. Failure to follow these rec-
ommendations may result in shortened
engine life and reduced engine
performance.
● Avoid driving for long periods at constant
speed, either fast or slow, and 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 mi
(805 km) . Your engine, axle or other parts
could be damaged.
BREAK-IN SCHEDULE
5-22Starting and driving

Follow these easy-to-use Fuel Efficient Driving
Tips to help you achieve the most fuel economy
from your vehicle.1. Use Smooth Accelerator and Brake
Pedal Application
● Avoid rapid starts and stops.
● Use smooth, gentle accelerator and
brake application whenever possible.
● Maintain constant speed while commut-
ing and coast whenever possible.
2. Maintain Constant Speed
● Look ahead to try and anticipate and mini-
mize stops.
● Synchronizing your speed with traffic
lights allows you to reduce your number
of stops.
● Maintaining a steady speed can minimize
red light stops and improve fuel effi-
ciency.
3. Use Air Conditioning (A/C) at Higher
Vehicle Speeds
● Below 40 MPH (64 km/h), it is more
efficient to open windows to cool the
vehicle due to reduced engine load. ●
Above 40 MPH (64 km/h), it is more
efficient to use A/C to cool the vehicle
due to increased aerodynamic drag.
● Recirculating the cool air in the cabin
when the A/C is on reduces cooling load.
4. Drive at Economical Speeds and Dis-
tances
● Observing the speed limit and not ex-
ceeding 60 MPH (97 km/h) (where le-
gally allowed) can improve fuel efficiency
due to reduced aerodynamic drag.
● Maintaining a safe following distance be-
hind other vehicles reduces unnecessary
braking.
● Safely monitoring traffic to anticipate
changes in speed permits reduced brak-
ing and smooth acceleration changes.
● Select a gear range suitable to road con-
ditions.
5. Use Cruise Control
● Using cruise control during highway driv-
ing helps maintain a steady speed.
● Cruise control is particularly effective in
providing fuel savings when driving on flat
terrains. 6.
Plan for the Shortest Route
● Utilize a map or navigation system to de-
termine the best route to save time.
7. Avoid Idling
● Shutting off your engine when safe for
stops exceeding 30–60 seconds saves
fuel and reduces emissions.
8. Buy an Automated Pass for Toll Roads
● Automated passes permit drivers to use
special lanes to maintain cruising speed
through the toll and avoid stopping and
starting.
9. Winter Warm Up
● Limit idling time to minimize impact to fuel
economy.
● Vehicles typically need no more than
30 seconds of idling at start-up to effec-
tively circulate the engine oil before driv-
ing.
● Your vehicle will reach its ideal operating
temperature more quickly while driving
versus idling.
FUEL EFFICIENT DRIVING TIPS
Starting and driving5-23

10.Keeping your Vehicle Cool
● Park your vehicle in a covered parking
area or in the shade whenever possible.
● When entering a hot vehicle, opening the
windows will help to reduce the inside
temperature faster, resulting in reduced
demand on your A/C system. ●
Keep your engine tuned up.
● Follow the recommended scheduled main-
tenance.
● Keep the tires inflated to the correct pres-
sure. Low tire pressure increases tire wear
and lowers fuel economy.
● Keep the wheels in correct alignment. Im-
proper alignment increases tire wear and
lowers fuel economy.
● For vehicles equipped with
, use 4H
or 4L position only when necessary. Four-
wheel drive operation lowers fuel economy.
● Use the recommended viscosity engine oil.
For additional information, refer to “Engine
oil and oil filter recommendations” in the
“Technical and consumer information” sec-
tion of this manual.
WARNING
● For 4WD equipped vehicles, do not at-
tempt to raise two wheels off the
ground and shift the transmission to
any drive or reverse position with the
engine running. Doing so may result in
drivetrain damage or unexpected ve-
hicle movement which could result in
serious vehicle damage or personal
injury.
● Do not attempt to test a 4WD equipped
vehicle on a 2-wheel dynamometer
(such as the dynamometers used by
some states for emissions testing) , or
similar equipment even if the other two
wheels are raised off the ground. Make
sure you inform test facility personnel
that your vehicle is equipped with 4WD
before it is placed on a dynamometer.
Using the wrong test equipment may
result in drivetrain damage or unex-
pected vehicle movement which could
result in serious vehicle damage or per-
sonal injury.
INCREASING FUEL ECONOMYUSING FOUR WHEEL DRIVE
(4WD) (if so equipped)
5-24Starting and driving

2WD or 4WD shift procedure:
4WD Shift SwitchPosition Wheels Driven Indicator Light
Use Conditions 4WD Shift Procedure
4WD shift Transfer 4LO position
2WD Rear wheels
For driving on dry, paved
roads (Economy drive) Move the 4WD switch.
2WD <—> 4H
4WD shift indicator light will indicate transfer shift position
engaged.
4H
4 wheels
For driving on rocky, sandy
or snow-covered roads
Neutral
*1
May blink Neutral disengages the
automatic transmission
mechanical parking lock,
which will allow the vehicle
to roll. Do not leave the
transfer shift position in
Neutral.*2 1. Stop the vehicle.
2. For automatic transmission vehicles: Shift the shift lever
to the (N) position with the brake pedal depressed.
For manual transmission vehicles: Shift the shift lever to
the (N) position with the clutch depressed.
3. For automatic transmission vehicles: Depress and turn the 4WD shift switch to 4LO or 4H with the brake pedal
depressed.
For manual transmission vehicles: Depress and turn the
4WD switch to 4LO or 4H with the clutch pedal de-
pressed.
THE TRANSFER CASE DOES NOT ENGAGE BETWEEN
4H AND 4LO (OR 4LO TO 4H) UNLESS YOU HAVE FIRST
STOPPED THE VEHICLE, DEPRESSED THE BRAKE
PEDAL AND MOVED THE SHIFT LEVER TO NEUTRAL
FOR AUTOMATIC TRANSMISSION VEHICLES. FOR
MANUAL TRANSMISSION VEHICLES YOU MUST MOVE
THE SHIFT LEVER TO NEUTRAL. *3
4LO
4 wheels
Illuminated For use when maximum
power and traction is re-
quired (for example: on
steep grades or rocky,
sandy, muddy roads)
*1: Before moving the shift lever from neutral, wait until the 4LO indicator light stays on steady. This indicates that the 4WD shift procedure is completed and
the transfer gear is correctly set in the 4LO position. If the vehicle is shifted into gear before the indicator is on steady, the transfer gear may grind, not
engage correctly or stay in the neutral position.
- If the 4WD warning light illuminates, perform the following procedure to return the transfer case to correct operating condition.
1. Turn off the engine by turning the ignition switch OFF.
5-26Starting and driving