ECU NISSAN TITAN 2023 Repair Manual

•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.
• Accelerating quickly, sharp steering
maneuvers or sudden braking may
cause loss of control.
• If at all possible, avoid sharp turning
maneuvers, particularly at high
speeds. Your NISSAN 4WD vehicle has
a higher center of gravity than a pas-
senger car. The vehicle is not de-
signed for cornering at the same
speeds as passenger cars. Failure to
operate this vehicle correctly could
result in loss of control and/or a roll-
over accident. •
Always use tires of the same type,
size, brand, construction (bias, bias-
belted, or radial), and tread pattern
on all four wheels. Install tire chains
on the rear wheels when driving on
slippery roads and drive carefully.
• Be sure to check the brakes immedi-
ately af ter driving in mud or water.
For additional information, see “Wet
brakes” (P. 5-114).
• Avoid parking your vehicle on steep
hills. If you get out of the vehicle and
it rolls forward, backward or side-
ways, you could be injured.
• Whenever you drive off-road through
sand, mud or water as deep as the
wheel hub, more frequent mainte-
nance may be required. For addi-
tional information, see “Maintenance
schedules” (P. 9-7).
WARNING
Do not operate the push-button igni-
tion switch while driving the vehicle ex-
cept in an emergency. (The engine will
stop when the ignition switch is pushed
three consecutive times in quick suc-
cession or the ignition switch is pushed
and held for more than 2 seconds.) If
the engine stops while the vehicle is
being driven, this could lead to a crash
and serious injury.
LSD2014
PUSH-BUTTON IGNITION SWITCH
5-12Starting and driving

EMERGENCY ENGINE SHUT OFF
To shut off the engine in an emergency
situation while driving, perform the follow-
ing procedure:
• Rapidly push the ignition switch threeconsecutive times in less than 1.5 sec-
onds, or
• Push and hold the ignition switch for more than 2 seconds.
NISSAN INTELLIGENT KEY®
BATTERY DISCHARGE
If the battery of the NISSAN Intelligent Key®
is discharged, or environmental conditions
interfere with the Intelligent Key operation,
start the engine according to the following
procedure:
1. Place the shif t lever in the P (Park) position.
2. Firmly apply the foot brake.
3. Touch the ignition switch with the Intel- ligent Key as illustrated. (A chime will
sound.) Af ter step 3 is performed, when the igni-
tion switch is pushed without depress-
ing the brake pedal, the ignition switch
position will change to the ON position.
4. Push the ignition switch while depress- ing the brake pedal within 10 seconds
af ter the chime sounds. The engine will
start.
NOTE:
• When the ignition switch is pushed tothe ON position or the engine is started
by the above procedure, the Intelligent
Key battery discharge indicator ap-
pears in the vehicle information dis-
play even when the Intelligent Key is
inside the vehicle. This is not a mal-
function. To turn off the Intelligent Key
battery discharge indicator, touch the
ignition switch with the Intelligent Key
again.
• If the Intelligent Key battery discharge indicator appears, replace the battery
as soon as possible. For additional in-
formation, see “Battery replacement”
(P. 8-28).
SSD0860
Starting and driving5-15

Push the switch on to warn other drivers
when you must stop or park under emer-
gency conditions. All turn signal lights flash.
WARNING
• If stopping for an emergency, be sure
to move the vehicle well off the road.
• Do not use the hazard warning flash-
ers while moving on the highway un-
less unusual circumstances force
you to drive so slowly that your ve-
hicle might become a hazard to other
traffic. •
Turn signals do not work when the
hazard warning flasher lights are on.
The flashers will operate with the ignition
switch placed in any position.
Some jurisdictions may prohibit the use
of the hazard warning flasher switch
while driving. To shut off the engine in an emergency
situation while driving, perform the follow-
ing procedure:
– Rapidly push the push-button ignition
switch three consecutive times in less
than 1.5 seconds, or
– Push and hold the push-button ignition switch for more than 2 seconds.
LIC0394
HAZARD WARNING FLASHER SWITCH EMERGENCY ENGINE SHUT OFF
6-2In case of emergency

10. Securely store the flat tire beneath thevehicle, from where the full size spare
was removed. To reinstall the wheel, re-
move the center cap (if so equipped)
and insert the retainer chain through
the wheel. Be sure the rubber rim cover
(if so equipped) is centered on the
wheel before lif ting. Use the assembled
jacking rod to slowly rotate the winch
clockwise to raise the wheel to the
vehicle.
11. To reinstall the jack and tool kit, reverse steps 1 through 5.
NOTE:
Inspect the rubber rim cover every six
years and replace as necessary. It is rec-
ommended that you visit a NISSAN
dealer for this service.
CAUTION
• Be sure to center the spare tire sus-
pending plate on the wheel and then
lif t the spare tire.
• Failure to use the rubber rim cover
may allow the chain to get stuck in
the wheel nut holes when stowed.
Removing bolt-on wheel caps (if
so equipped)
CAUTION
Do not use your hands to pry off wheel
caps or wheel covers. Doing so could
result in personal injury.
The wheel cap
O1is only attached with the
wheel nuts and is separate from the wheel
O2. To remove the wheel cap, remove the
wheel nuts af ter the jack is securely sup-
porting the vehicle and the tire clears the
ground.
For additional information, see “Jacking up
vehicle and removing the damaged tire”
(P. 6-6).
Take care not to scratch the wheel cap or
wheel surface.
Jacking up vehicle and removing
the damaged tire (all models)
WARNING
• Never get under the vehicle while it is
supported only by the jack. If it is nec-
essary to work under the vehicle,
support it with safety stands.
• Use only the jack provided with your
vehicle to lif t the vehicle. Do not use
the jack provided with your vehicle
on other vehicles. The jack is de-
signed for lif ting only your vehicle
during a tire change.
• Use the correct jack-up points. Never
use any other part of the vehicle for
jack support.
• Never jack up the vehicle more than
necessary.LCE2367
6-6In case of emergency

2. Place the jack directly under the jack-uppoint as illustrated so the top of the jack
contacts the vehicle at the jack-up point.
Align the jack head under the arrow
stamped on the side of the frame or rear
as shown.
The jack should be used on firm and
level ground.
3. Install the assembled jack rod into thejack as shown.
4. To lif t the vehicle, securely hold the jack lever and rod. Carefully raise the vehicle
until the tire clears the ground.
5. Remove the wheel nuts and then re- move the tire.
Installing the spare tire
The spare tire is designed for emergency
use. For additional information, see
“Wheels and tires” (P. 8-34).
1. Clean any mud or dirt from the surfacebetween the wheel and hub.
2. Carefully put the spare tire on and tighten the wheel nuts finger tight.
3. With the wheel nut wrench, tighten wheel nuts alternately and evenly in the
sequence illustrated (
O1,O2,O3,O4,O5,O6)
until they are tight.
LCE0087
WCE0063
6-8In case of emergency

4. Lower the vehicle slowly until the tiretouches the ground. Then, with the
wheel nut wrench, tighten the wheel
nuts securely in the sequence illustrated
(
O1,O2,O3,O4,O5,O6). Lower the vehicle
completely.
WARNING
• Incorrect wheel nuts or improperly
tightened wheel nuts can cause the
wheel to become loose or come off.
This could cause an accident.
• Do not use oil or grease on the wheel
studs or nuts. This could cause the
nuts to become loose.
• Retighten the wheel nuts when the
vehicle has been driven for 600 miles
(1,000 km) (also in cases of a flat tire,
etc.).
As soon as possible, tighten the wheel
nuts to the specified torque with a
torque wrench.
Wheel nut tightening torque:
Non-XD models: 98 f t-lb (133 N·m)
XD models: 131 f t-lb (177 N·m) The wheel nuts must be kept tightened
to specification at all times. It is recom-
mended that wheel nuts be tightened to
specifications at each lubrication
interval.
Adjust tire pressure to the COLD
pressure.
COLD pressure: Af ter vehicle has been
parked for 3 hours or more or driven less
than 1 mi. (1.6 km).
COLD tire pressures are shown on the
Tire and Loading Information label af-
fixed to the driver side center pillar.
Af ter adjusting tire pressure to the COLD
tire pressure, the display (if so equipped)
of the tire pressure information may
show higher pressure than the COLD tire
pressure af ter the vehicle has been
driven more than 1 mi. (1.6 km). This is
because the tire pressure increases as
the tire temperature rises. This does not
indicate a system malfunction.
5. Securely store the tools and jacking
equipment in the vehicle. For additional
information, see the “Getting the spare
tire and tools (Crew and King Cab® mod-
els)” (P. 6-4).
WARNING
• Always make sure that the spare tire
and jacking equipment are properly
secured af ter use. Such items can be-
come dangerous projectiles in an ac-
cident or sudden stop.
• The spare tire is designed for emer-
gency use. For additional informa-
tion, see “Wheels and tires” (P. 8-34).
In case of emergency6-9

Two-Wheel Drive models with
automatic transmission
NISSAN recommends that your vehicle be
towed with the driving (rear) wheels off the
ground or place the vehicle on a flatbed
truck as illustrated.
CAUTION
• Never tow automatic transmission
models with the rear wheels on the
ground or four wheels on the ground
(forward or backward), as this may
cause serious and expensive dam-
age to the transmission. If it is neces-
sary to tow the vehicle with the front
wheels raised always use towing dol-
lies under the rear wheels.
• When towing automatic transmis-
sion models with the front wheels on
the ground or on towing dollies: –
Place the ignition switch in the
OFF position and secure the steer-
ing wheel in a straight-ahead po-
sition with a rope or similar de-
vice. Never secure the steering
wheel by placing the ignition
switch in the LOCK position. This
may cause damage to the lock
mechanism (for models with a
steering lock mechanism).
NOTE:
If the battery is completely drained the
transmission will not manually shif t to
other positions.
When towing long distances or speeds in
excess of 50 mph (80 km/h), remove the
propeller shaf t before towing to prevent
damage to the transmission. It is recom-
mended that you visit a NISSAN dealer for
additional information.
VEHICLE RECOVERY (freeing a
stuck vehicle)
There are two options to recover a stuck
vehicle: pulling and rocking. For additional
information regarding these options,
please refer to the following sections.
LCE2311
In case of emergency6-15

•Properly position the mats in the
floorwell using the floor mat posi-
tioning hook. For additional informa-
tion, see "Floor mat installation"
(P. 7-6).
• Make sure the floor mat does not in-
terfere with pedal operation.
• Periodically check the floor mats to
make sure they are properly
installed.
• Af ter cleaning the vehicle interior,
check the floor mats to make sure
they are properly installed.
The use of Genuine NISSAN floor mats can
extend the life of your vehicle carpet and
make it easier to clean the interior. Mats
should be maintained with regular clean-
ing and replaced if they become exces-
sively worn.
Floor mat installation
Your vehicle is equipped with floor mat po-
sitioning hook(s). The number and shape of
the floor mat positioning hooks for each
seating position varies depending on the
vehicle. When installing Genuine NISSAN floor mats,
follow the installation instructions provided
with the mat and the following:
1. With the ignition switch in the OFF posi-
tion, the shif t lever in P (Park) position
and with the parking brake fully applied,
position the floor mat in the floorwell so
that the floor mat grommet holes are
aligned with the hook(s).
2. Secure the grommet holes into the hook(s) and ensure that the floor mat is
properly positioned.
3. Make sure the floor mat does not inter- fere with pedal operation. With the igni-
tion switch still in the OFF position, the
shif t lever in the P (Park) position and
with the parking brake applied, fully ap-
ply and release all pedals. The floor mat
must not interfere with pedal operation
or prevent the pedal from returning to
its normal position.
It is recommended that you visit a NISSAN
dealer for details about installing the floor
mats in your vehicle. The illustration shows the location of the
floor mat positioning hooks.
SEAT BELTS
The seat belts can be cleaned by wiping
them with a sponge dampened in a mild
soap solution. Allow the belts to dry com-
pletely in the shade before using them. For
additional information, see “Seat belt main-
tenance” (P. 1-23).
LAI2088
Positioning hooks
7-6Appearance and care

When performing any inspection or main-
tenance work on your vehicle, always take
care to prevent serious accidental injury to
yourself or damage to the vehicle. The fol-
lowing are general precautions which
should be closely observed.
WARNING
• Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the ve-
hicle from moving. Move the shif t le-
ver to P (Park)
• Be sure the ignition switch is in the
OFF or LOCK position when perform-
ing any parts replacement or repairs.
• If you must work with the engine run-
ning, keep your hands, clothing, hair
and tools away from moving fans,
belts and any other moving parts.
• It is advisable to secure or remove
any loose clothing and remove any
jewelry, such as rings, watches, etc.
before working on your vehicle.
• Always wear eye protection when-
ever you work on your vehicle. •
The automatic engine cooling fan (if
so equipped) may come on at any
time without warning, even if the ig-
nition switch is in the OFF position
and the engine is not running. To
avoid injury, always disconnect the
negative battery cable before work-
ing near the fan.
• If you must run the engine in an en-
closed space such as a garage, be
sure there is proper ventilation for
exhaust gases to escape.
• Never get under the vehicle while it is
supported only by a jack. If it is nec-
essary to work under the vehicle,
support it with safety stands.
• Keep smoking materials, flame and
sparks away from the fuel tank and
battery.
• Because the fuel lines are under high
pressure even when the engine is off,
it is recommended that you visit a
NISSAN dealer for service of the fuel
filter or fuel lines.
CAUTION
• Do not work under the hood while
the engine is hot. Turn the engine off
and wait until it cools down.
• Avoid contact with used engine oil
and coolant. Improperly disposed
engine oil, engine coolant and/or
other vehicle fluids can damage the
environment. Always conform to lo-
cal regulations for disposal of vehicle
fluid.
• Never leave the engine or automatic
transmission related component
harnesses disconnected while the
ignition switch is in the ON position.
• Never connect or disconnect the bat-
tery or any transistorized compo-
nent while the ignition switch is in
the ON position.
MAINTENANCE PRECAUTIONS
8-2Do-it-yourself

CAUTION
Be careful not to burn yourself, as the
engine oil is hot.
WARNING
• Prolonged and repeated contact
with used engine oil may cause skin
cancer.
• Try to avoid direct skin contact with
used oil. If skin contact is made, wash
thoroughly with soap or hand
cleaner as soon as possible.
• Keep used engine oil out of reach of
children.
4. Loosen the oil filter with an oil filter wrench by turning it counterclockwise.
Remove the oil filter by turning it by
hand.
5. Wipe the engine oil filter mounting sur- face with a clean rag.
CAUTION
Be sure to remove any old gasket ma-
terial remaining on the sealing surface
of the engine. Failure to do so could
lead to an oil leak and engine damage. •
The dipstick must be inserted in
place to prevent oil spillage from the
dipstick hole when filling the engine
with oil.
6. Coat the gasket on the new filter with clean engine oil.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten addi-
tionally more than 2/3 turn.
Oil filter tightening torque: 11 to 15 f t-lb (15.0 to 21.0 N·m)
8. Clean and re-install the drain plug with a new washer. Securely tighten the drain
plug with a wrench. Do not use exces-
sive force.
Drain plug tightening torque: 22 to 29 f t-lb (29.4 to 39.2 N·m)
9. Refill the engine with the recommended oil through the oil filler opening, and in-
stall the oil filler cap securely.
For additional information about drain and
refill capacity, see “Recommended fluids/
lubricants and capacities” (P. 10-2). The
drain and refill capacity depends on the oil
temperature and drain time. Use these
specifications for reference only. Always use the dipstick to determine the proper
amount of oil in the engine.
10. Start the engine and check for leakage
around the drain plug and the oil filter.
Correct as required. Turn the engine off
and wait more than 15 minutes. Check
the oil level with the dipstick. Add en-
gine oil if necessary.
Af ter the operation
1. Reinstall plate in reverse order ofremoval.
2. Lower the vehicle carefully to the ground.
3. Reset oil and oil filter maintenance re- minder. For additional information, see
“Vehicle information display” (P. 2-24).
• Dispose of waste oil and filter properly.
• Check your local regulations.
Do-it-yourself8-13