check engine NISSAN FRONTIER 2023 Service Manual

Condition A:
In the following conditions, the AEB with
Pedestrian Detection system warning light
blinks and the system will be turned off
automatically:
• The radar sensor picks up interferencefrom another radar source.
• The camera area of the windshield is misted or frozen.
• Strong light is shining from the front.
• The cabin temperature is over approxi- mately 104°F (40°C) in direct sunlight.
• The camera area of the windshield glass is continuously covered with dirt, etc.
Action to take
When the above conditions no longer exist,
the AEB with Pedestrian Detection system
will resume automatically.
NOTE:
When the inside of the windshield on the
camera area is misted or frozen, it will
take a period of time to remove it af ter
the A/C turns on. If dirt appears on this
area, it is recommended that you visit a
NISSAN dealer. Condition B:
When there is inclement weather (rain, fog,
snow, etc.) blocking the front radar sensor,
the AEB with Pedestrian Detection system
will be canceled, the chime will sound and
the “Forward Driving Aids Temporarily Dis-
abled Front Sensor Blocked See Owner’s
Manual” warning message will appear in
the vehicle information display.
Action to take:
When the conditions listed above are no
longer present, the warning message will
no longer be available in the vehicle infor-
mation display. If the “Forward Driving Aids
Temporarily Disabled Front Sensor Blocked
See Owner’s Manual” warning message
continues to be displayed, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
Condition C:
When the radar sensor of the front bumper
is covered with dirt or is obstructed, the
AEB with Pedestrian Detection system will
automatically be canceled. The chime will
sound and the “Forward Driving Aids Tem-
porarily Disabled Front Sensor Blocked See
Owner’s Manual” warning message will ap-
pear in the vehicle information display.Action to take:
If the warning message appears, stop the ve-
hicle in a safe place, place the shif t lever in the
P (Park) position, and turn the engine off. When
the radar signal is temporarily interrupted,
clean the sensor area of the front bumper and
restart the engine. If the “Forward Driving Aids
Temporarily Disabled Front Sensor Blocked
See Owner’s Manual” warning message con-
tinues to be displayed, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
Condition D
When driving on roads with limited road
structures or buildings (for example, long
bridges, deserts, snowfields, driving next to
long walls), the system may illuminate the
system warning light and display the “For-
ward Driving Aids Temporarily Disabled
Front Sensor Blocked See Owner’s Manual”
message.
Action to take:
When the above driving conditions no lon-
ger exist, turn the system back on.
NOTE:
If the AEB with Pedestrian Detection
system stops working, the I-FCW sys-
tem will also stop working.
Starting and driving
5-89

SYSTEM MALFUNCTION
If the AEB with Pedestrian Detection sys-
tem malfunctions, it will be turned off auto-
matically, a chime will sound, the AEB with
Pedestrian Detection system warning light
(orange) will illuminate and the warning
message “System fault See Owner’s
Manual” will appear in the vehicle informa-
tion display.Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the en-
gine off and restart the engine. If the
warning light continues to illuminate, have
the AEB with Pedestrian Detection system
checked. It is recommended that you visit a
NISSAN dealer for this service.
SYSTEM MAINTENANCE
The radar sensor is located on the front of
the vehicle
OB. The camera is located on
the upper side of the windshield
OA.
To keep the AEB with Pedestrian Detection
system operating properly, be sure to ob-
serve the following:
• Always keep the sensor areas of the front bumper/emblem and windshield clean.
• Do not strike or damage the areas around the sensors (e.g., bumper,
windshield).
LSD3916LSD4498
5-90Starting and driving

Action to take:
When the conditions listed above are no
longer present, the warning message will
no longer be available in the vehicle infor-
mation display. If the “Forward Driving Aids
Temporarily Disabled Front Sensor Blocked
See Owner’s Manual” warning message
continues to be displayed, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
Condition C
When the radar sensor of the front bumper
is covered with dirt or is obstructed, the
I-FCW system will automatically be can-
celed. The chime will sound and the “For-
ward Driving Aids Temporarily Disabled
Front Sensor Blocked See Owner’s Manual”
warning message will appear in the vehicle
information display.
Action to take:
If the warning message appears, stop the
vehicle in a safe place, place the shif t lever
in the P (Park) position, and turn the engine
off. When the radar signal is temporarily
interrupted, clean the sensor area of the
front bumper and restart the engine. If the
“Forward Driving Aids Temporarily Disabled
Front Sensor Blocked See Owner’s Manual”
warning message continues to be dis-played, have the system checked. It is rec-
ommended that you visit a NISSAN dealer
for this service.
Condition D
When driving on roads with limited road
structures or buildings (for example, long
bridges, deserts, snowfields, driving next to
long walls), the system may illuminate the
system warning light and display the “For-
ward Driving Aids Temporarily Disabled
Front Sensor Blocked See Owner’s Manual”
warning message.
Action to take:
When the above driving conditions no lon-
ger exist, turn the system back on.
NOTE:
If the AEB with Pedestrian Detection sys-
tem stops working, the I-FCW system will
also stop working.
SYSTEM MALFUNCTION
If the I-FCW system malfunctions, it will be
turned off automatically, a chime will sound,
the AEB with Pedestrian Detection system
warning light (orange) will illuminate and the
warning message [Malfunction] will appear
in the vehicle information display.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the engine
off and restart the engine. If the warning light
continues to illuminate, have the I-FCW sys-
tem checked. It is recommended that you
visit a NISSAN dealer for this service.
LSD3916
5-102Starting and driving

INTELLIGENT DRIVER ALERTNESS
(I-DA) SYSTEM LIMITATIONS
WARNING
Listed below are the system limitations
for the I–DA system. Failure to operate
the vehicle in accordance with these
system limitations could result in seri-
ous injury or death.
• The I-DA system may not operate
properly and may not provide an
alert in the following conditions:
– Poor road conditions such as an
uneven road surface or pot holes.
– Strong side wind.
–
If you have adopted a sporty driving style with higher cornering speeds
or higher rates of acceleration.
–Frequent lane changes or changesto vehicle speed.
• The I–DA system will not provide an
alert in the following conditions:
– Vehicle speeds lower than 37 mph
(60 km/h).
– Short lapses of attention.
– Instantaneous distractions such
as dropping an object.
System malfunction
If the Intelligent Driver Alertness system
malfunctions, the system warning mes-
sage will appear in the vehicle information
display and the function will be stopped
automatically.
Action to take
Stop the vehicle in a safe location, place the
vehicle in P (Park) position, turn the engine
off and restart the engine. If the system
warning message continues to appear,
have the system checked. It is recom-
mended that you visit a NISSAN dealer for
this service.
CAUTION
During the first 1,200 miles (2,000 km),
follow these recommendations to ob-
tain maximum engine performance
and ensure the future reliability and
economy of your new vehicle. Failure to
follow these recommendations may
result in shortened engine life and re-
duced 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 miles (805 kilometers). Your engine, axle or
other parts could be damaged.
LIC3125
BREAK-IN SCHEDULE
Starting and driving5-107

• Keep your engine tuned up.
• Follow the recommended scheduledmaintenance.
• 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.
4-Wheel Drive operation lowers fuel
economy.
• Use the recommended viscosity engine oil. For additional information, see “Engine
oil and oil filter recommendations”
(P. 10-7).
WARNING
• For 4WD equipped vehicles, do not
attempt to raise two wheels off the
ground and shif t the transmission to
any drive or reverse position with the
engine running. Doing so may result
in drivetrain damage or unexpected
vehicle movement which could result
in serious vehicle damage or per-
sonal injury.
• Do not attempt to test a 4WD
equipped vehicle on a 2-wheel dyna-
mometer (such as the dynamom-
eters used by some states for emis-
sions 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 dynamom-
eter. Using the wrong test equipment
may result in drivetrain damage or
unexpected vehicle movement
which could result in serious vehicle
damage or personal injury.CAUTION
• Do not drive the vehicle in the 4H or
4LO position on dry hard surface
roads. Driving on dry, hard surfaces in
4H or 4LO may cause unnecessary
noise, tire wear and increased fuel
consumption.
If the 4WD vehicle information dis-
play warning message turns on
when you are driving on dry hard sur-
face roads:
– In the 4H position, shif t the 4WD
shif t switch to 2WD.
– In the 4LO position, stop the ve-
hicle, move the shif t lever to the N
(Neutral) position with the brake
pedal depressed, and shif t the
4WD shif t switch to 2WD.
• If the vehicle information display
warning message is still on af ter the
above operation, have your vehicle
checked as soon as possible. It is rec-
ommended that you visit a NISSAN
dealer for this service.
INCREASING FUEL ECONOMYUSING 4–WHEEL DRIVE (4WD)
(if so equipped)
Starting and driving5-109

*1: Before moving the shif t lever from N
(Neutral), wait until the 4LO indicator stays
on steady. This indicates that the 4WD shif t
procedure is completed and the transfer
gear is correctly set in the 4LO position. If
the vehicle is shif ted into gear before the
indicator is on steady, the transfer gear
may grind, not engage correctly or stay in
the N (Neutral) position.
- If the 4WD vehicle information display
warning message illuminates, perform the
following procedure to return the transfer
case to correct operating condition.
1. Turn off the engine by placing the ignition
switch in the OFF position.
2. Start the engine.
- Check that the 4WD vehicle information
display warning message turns off. If the
warning message in the vehicle informa-
tion display stays on, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
3. Apply the parking brake, depress the
brake pedal and move the shif t lever to the
N (Neutral) position.
4. With the brake pedal depressed, move
the 4WD shif t switch to the desired mode.- Be sure to wait until the transfer gear
change completes before shif ting the shif t
lever from the N (Neutral) position.
*2: While changing in and out of 4LO, the
ignition switch must be in the ON position
and the vehicle's engine must be running
for a shif t to take place and for the 4WD
shif t and 4LO position indicators to be op-
erable. Otherwise, the shif t will not take
place and no indicators will be on or
flashing.
*3: Make sure the transfer 4LO position in-
dicator turns on when you shif t the 4WD
shif t switch to 4LO. The
indicator light
will also turn on when 4LO is selected. For
additional information, see “Vehicle Dy-
namic Control (VDC) system” (P. 5-121).
When the 4LO position is selected, the VDC
system is disabled and the VDC off indica-
tor light illuminates, see “Vehicle Dynamic
Control (VDC) OFF indicator light”(P. 2-20).
The transfer case 4WD shif t switch is used
to select either 2WD or 4WD depending on
the driving conditions. There are three
types of drive modes available, 2WD, 4H and
4LO. The 4WD shif t switch electronically controls
the transfer case operation. Rotate the
switch to move between each mode, 2WD,
4H and 4LO.
To change into or out of 4LO, the vehicle
MUST be stationary, move the shif t lever
to N (Neutral), and depress the brake
pedal. The switch must be pushed and
turned to select 4LO.
WARNING
• When parking, apply the parking
brake before stopping the engine
and make sure that the 4WD shif t
indicator is on and the Automatic
Transmission Park (ATP) warning
light goes off. Otherwise, the vehicle
could unexpectedly move even if the
A/T is in the P (Park) position.
• The 4LO indicator must stop blinking
and remain illuminated or turn off
before shif ting the transmission
into gear. If the shif t lever is shif ted
from the N (Neutral) position to any
other gear when the 4LO indicator is
blinking, the vehicle may move
unexpectedly.
Starting and driving5-111

• If the 4WD vehicle information displaywarning message comes on, the 4WD
shif t indicator goes out.
CAUTION
If the 4WD shif t indicator indication
changes to 2WD when the 4WD shif t
switch is shif ted to the 4H position at
low ambient temperatures, the 2WD
mode may be being engaged due to
malfunctioning drive system. If the in-
dicator does not return to normal and
the 4WD vehicle information display
warning message comes on, have the
system checked. It is recommended
that you visit a NISSAN dealer for this
service.
Warning message
Warning message Warning message comes on when:
Vehicle information
display
4WD Error: See Owner’s Manual There is a malfunction
in the 4–Wheel Drive system
FRT & RR tire size differ- ence: See Owner’s Manual The difference in wheel
rotation is large
The 4WD warning message is located in
the meter. The 4WD warning message
comes on when the ignition switch is
placed in the ON position. It turns off soon
af ter the engine is started. If any malfunc-
tion occurs in the 4WD system when the
ignition switch is ON, the warning message
will either remain illuminated or blink. If the
4WD warning message comes on, the 4WD
shif t indicator goes out. A large difference
between the diameters of front and rear
wheels will make the warning message
blink slowly (about once per two seconds).
Shif t the 4WD shif t switch into 2WD and do
not drive fast.
CAUTION
• If the warning message comes on
during operation or rapidly af ter
stopping the vehicle for a while, have
your vehicle checked as soon as pos-
sible. It is recommended that you
visit a NISSAN dealer for this service.
• Shif ting between 4H and 4LO is not
recommended when the 4WD
warning message turns on. •
When the warning message comes
on, the 2WD mode may be engaged
even if the 4WD shif t switch is in 4H.
Be especially careful when driving. If
corresponding parts are malfunc-
tioning, the 4WD mode will not be en-
gaged even if the 4WD shif t switch is
shif ted.
• Do not drive the vehicle in the 4H or
4LO position on dry hard surface
roads. Driving on dry, hard surfaces in
4H or 4LO may cause unnecessary
noise, tire wear and increased fuel
consumption.
If the 4WD warning message turns on
when you are driving on dry hard sur-
face roads:
– In the 4H position, shif t the 4WD
shif t switch to 2WD.
– In the 4LO position, stop the ve-
hicle, move the automatic trans-
mission shif t lever to the N (Neu-
tral) position with the brake pedal
depressed, and shif t the 4WD shif t
switch to 2WD.
5-114Starting and driving

–When installing a spare tire, makesure that it is the proper size and
type as specified on the Tire and
Loading Information label. For addi-
tional information, see “Tire and
Loading Information label” (P. 10-14).
– For additional information, see
“Wheels and tires” (P. 8-32).
The ABS controls the brakes so the wheels
do not lock during hard braking or when
braking on slippery surfaces. The system
detects the rotation speed at each wheel
and varies the brake fluid pressure to pre-
vent each wheel from locking and sliding.
By preventing each wheel from locking, the
system helps the driver maintain steering
control and helps to minimize swerving
and spinning on slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady
pressure, but do not pump the brakes. The
Anti-lock Braking System will operate to
prevent the wheels from locking up. Steer
the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing so
may result in increased stopping
distances.
Self-test feature
The Anti-lock Braking System (ABS) in-
cludes electronic sensors, electric pumps,
hydraulic solenoids and a computer. The
computer 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 does not indicate a mal-
function. If the computer senses a mal-
function, it switches the ABS off and illumi-
nates the ABS warning light on the
instrument panel. The brake system then
operates normally but without anti-lock
assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the ve-
hicle checked. It is recommended that you
visit a NISSAN dealer for this service.
Normal operation
The Anti-lock Braking System (ABS) oper-
ates at speeds abov e3-6mph(5-10
km/h). The speed varies according to road
conditions.
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic pres-
sure. This action is similar to pumping the
brakes very quickly. You may feel a pulsa-
tion in the brake pedal and hear a noise
from under the hood or feel a vibration
from the actuator when it is operating. This
is normal and indicates that the ABS is op-
erating properly. However, the pulsation
may indicate that road conditions are haz-
ardous and extra care is required while
driving.
Starting and driving5-119

•When the driver’s door is open.
• When the steering wheel is operated.
• When the Idling Stop System indicator
blinks at a low speed.
(When the Idling Stop System indica-
tor blinks at a high speed (twice ap-
proximately every 1 second), be sure to
check if the engine hood is open. When
the engine hood is opened the engine
will be in the normal stopped state. In
this case, restart the engine with the
ignition switch).
(When the Idling Stop System indicator
blinks at a low speed (once approxi-
mately every 2 seconds), have the sys-
tem checked, and if necessary repaired,
by a NISSAN dealer promptly).
• When the fan speed control is in any
position other than “OFF,” (0) while the
air flow control is in the front defroster
position.
• When the front defroster switch is on.
• When the rear window defroster switch
is on.
• When the temperature inside the ve-
hicle is lower than approximately 68°F
(20°C). •
When the temperature inside the ve-
hicle is higher than approximately 86°F
(30°C). (When the air conditioner is off,
the Idling Stop System will operate.)
• When the fan speed of the air condi-
tioner is set to the maximum speed.
• When the Idling Stop OFF switch is
turned on.
• When the power consumption is large.
• When the altitude is high.
• When the accelerator pedal is
depressed.
• When the shif t lever is any range other
than D (Drive).
• When the brake pedal is not firmly
depressed.
• When stopping the vehicle on steep
sloping roads.
NOTE:
The engine will not restart even if the
brake pedal is released while the Idling
Stop System is activated under the fol-
lowing conditions:
• When the engine hood is opened.
NOTE:
It may take some time until the Idling
Stop System activates under the follow-
ing conditions:
•When the battery is discharged.
• When the outside temperature is low or
high.
•
When the battery is replaced or the bat-
tery terminal is disconnected for ex-
tended periods and then reconnected.
NOTE:
When the Idling Stop System indicator
illuminates, the engine starts running
automatically under at least one of the
following conditions:
• The driver’s seat belt is unfastened, or
the driver’s door is open.
• The battery voltage becomes low (due
to electrical load from other vehicle
systems like headlights, heaters, etc.,
or auxiliary devices connected to the
12 volt socket inside the vehicle).
• The vehicle speed is above about 1 mph
(2 km/h).
• When the rear window defroster is
operated.
5-130Starting and driving

•When the temperature inside the ve-
hicle is lower than approximately 68°F
(20°C).
• When the temperature inside the ve-
hicle is higher than approximately 86°C
(30°F). (When the air conditioner is off,
the Idling Stop System will operate.)
• When the front defroster is turned on.
• When more than 3 minutes have
elapsed since the Idling Stop System
was active.
• When the accelerator pedal is
depressed.
• When the steering wheel is operated.
(The steering wheel operation may be-
come heavy, but this is not a
malfunction.)
• When the battery capacity is low.
• When the power consumption is high.
• When the shif t lever is any range other
than D (Drive).
• When the Idling Stop OFF switch is
pushed.NOTE:
The following condition will prevent the
Idling Stop System from automatically
restarting the engine. Starting the en-
gine with the ignition switch operation is
then necessary:
• The hood is open.
Use this system while waiting at a stop
light, etc. When the vehicle is stopped for
long periods of time, turn off the engine.
When the engine is stopped by the Idling
Stop System, heating, cooling and dehu-
midif ying functions will be deactivated. To
avoid the air conditioning functions from
being deactivated, turn off the Idling Stop
System by pushing the Idling Stop OFF
switch.
RETROGRADE MOVEMENT
CONTROL FUNCTION
This system is designed to reduce the ret-
rograde movement that occurs while the
driver’s foot changes from depressing the
brake pedal to the accelerator pedal when
moving the vehicle while the Idling Stop
System is active on a hilly road.
IDLING STOP SYSTEM DISPLAY
The status of the Idling Stop System can be
checked in the vehicle information display.
Starting and driving5-131