check engine NISSAN TITAN 2017 2.G Repair Manual

Vehicles operated in high temperatures or under
severe conditions require frequent checks of the
battery fluid level.
JUMP STARTING
If jump starting is necessary, refer to “Jump start-
ing” in the “In case of emergency” section of this
manual. If the engine does not start by jump
starting, the battery may have to be replaced. It is
recommended that you visit a NISSAN dealer for
this service.
CAUTION
●Do not ground accessories directly to
the battery terminal. Doing so will by-
pass the variable voltage control sys-
tem and the vehicle battery may not
charge completely.
● Use electrical accessories with the en-
gine running to avoid discharging the
vehicle battery. Your vehicle is equipped with a variable voltage
control system. This system measures the
amount of electrical discharge from the battery
and controls voltage generated by the generator.
The current sensor
Ais located near the battery
along the negative battery cable. If you add elec-
trical accessories to your vehicle, be sure to
ground them to a suitable body ground such as
the frame or engine block area.
LDI2178
VARIABLE VOLTAGE CONTROL
SYSTEM (if so equipped)
8-16Do-it-yourself

1. Power steering fluid pump pulley
2. Automatic belt tensioner pulley
3. Water pump pulley
4. Cooling fan pulley
5. Air conditioner compressor pulley
6. Crankshaft pulley
7. Generator pulley
WARNING
Be sure the ignition switch is in the OFF or
LOCK position before servicing drive belt.
The engine could rotate unexpectedly.1. Visually inspect the belt for signs of unusual
wear, cuts, fraying or looseness. If the belt is
in poor condition or is loose, have it replaced
or adjusted. It is recommended that you visit
a NISSAN dealer for this service.
2. Have the belt checked regularly for condi- tion and tension in accordance with the
maintenance schedule. For additional infor-
mation, refer to the Maintenance and
schedules section of this manual.
For additional information on the Cummins 5.0L
engine drive belt, refer to the “Titan Diesel Own-
er’s Manual”.
REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-tipped spark
plugs as frequently as conventional type spark
plugs because they last much longer. Follow the
maintenance log shown in the “Maintenance and
schedules” section of this manual. Do not service
iridium-tipped spark plugs by cleaning or regap-
ping.
● Always replace spark plugs with rec-
ommended or equivalent ones.
VK56VD engine
WDI0661LDI2972
DRIVE BELT SPARK PLUGS (gasoline engine only)
Do-it-yourself8-17

ENGINE COMPARTMENT
WARNING
Never use a fuse of higher or lower amper-
age rating than that specified on the fuse
box cover. This could damage the electri-
cal system or electronic control units or
cause a fire.
If any electrical equipment does not come on,
check for an open fuse. 1. Be sure the ignition switch and the headlight switch are OFF. 2. Open the engine hood.
3. Remove the fuse box cover by pushing the
tab and lifting the cover up.
4. Remove the fuse with the fuse puller. The fuse puller is located in the center of the fuse
block in the passenger compartment.
VK56VD engine
LDI2962
VK56VD engine
LDI2974
Cummins 5.0L engine
LDI2882
8-22Do-it-yourself

Your NISSAN has been designed to have mini-
mum maintenance requirements with long ser-
vice intervals to save you both time and money;
however, some day-to-day and regular mainte-
nance is essential to maintain your NISSAN’s
good mechanical condition as well as its emis-
sions and engine performance.
It is the owner’s responsibility to make sure that
the scheduled maintenance, as well as general
maintenance, is performed.
As the vehicle owner, you are the only one who
can ensure that your vehicle receives proper
maintenance. You are a vital link in the mainte-
nance chain.
GENERAL MAINTENANCE
General maintenance includes those items which
should be checked during normal day-to-day op-
eration. They are essential for proper vehicle op-
eration. It is your responsibility to perform these
maintenance procedures regularly as prescribed.
Performing general maintenance checks requires
minimal mechanical skill and only a few general
automotive tools.
These checks or inspections can be done by you,
a qualified technician or, if you prefer, a NISSAN
dealer.
SCHEDULED MAINTENANCE
The maintenance items listed in this section are
required to be serviced at regular intervals. How-
ever under severe driving conditions, additional
or more frequent maintenance will be required.
WHERE TO GO FOR SERVICE
If maintenance service is required or your vehicle
appears to malfunction, have the systems
checked and corrected. It is recommended that
you visit a NISSAN dealer for this service.
NISSAN technicians are well-trained specialists
who are kept up-to-date with the latest service
information through technical bulletins, service
tips and in-dealership training programs. They
are completely qualified to work on NISSAN ve-
hiclesbefore they work on your vehicle rather
than after they have worked on it.
You can be confident that a NISSAN dealer’s
service department performs excellent service to
meet the maintenance requirements on your ve-
hicle — in a reliable and economical way. During the normal day-to-day operation of the
vehicle, general maintenance should be per-
formed regularly as prescribed in this section. If
you detect any unusual sounds, vibrations or
smells, be sure to check for the cause or have a
NISSAN dealer do it promptly. In addition, it is
recommended that you visit a NISSAN dealer if
you think that repairs are required.
When performing any checks or maintenance
work, closely observe the “Maintenance precau-
tions” in the “Do-it-yourself” section of this
manual.
EXPLANATION OF GENERAL
MAINTENANCE ITEMS
Additional information on the following
items with“*”isfound in the “Do-it-
yourself” section of this manual.
Outside the vehicle
The maintenance items listed here should be
performed from time to time, unless otherwise
specified.
Doors and engine hood:
Check that the doors
and engine hood operate properly. Also ensure
that all latches lock securely. Lubricate hinges,
latches, latch pins, rollers and links if necessary.
MAINTENANCE REQUIREMENTS GENERAL MAINTENANCE
9-2Maintenance and schedules

Steering wheel:Check for changes in the
steering system, such as excessive freeplay, hard
steering or strange noises.
Warning lights and chimes: Make sure all
warning lights and chimes are operating properly.
Windshield wiper and washer*: Check that
the wipers and washer operate properly and that
the wipers do not streak.
Windshield defroster: Check that the air
comes out of the defroster outlets properly and in
sufficient quantity when operating the heater or
air conditioner.
Under the hood and vehicle
The maintenance items listed here should be
checked periodically (for example, each time you
check the engine oil or refuel) .
Battery* (for seviceable batteries): Check
the fluid level in each cell. It should be between
the MAX and MIN lines. Vehicles operated in high
temperatures or under severe conditions require
frequent checks of the battery fluid level. NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of elec-
tronic accessories that consume bat-
tery power when the engine is not run-
ning (Phone chargers, GPS, DVD
players, etc.) .
2. Vehicle is not driven regularly and/or
only driven short distances.
In these cases, the battery may need to be
charged to maintain battery health.
Brake fluid level*: Make sure that the brake
fluid level is between the MIN and MAX lines on
the reservoir.
Engine coolant level*: Check the coolant level
when the engine is cold.
Engine drive belts*: Make sure the drive belts
are not frayed, worn, cracked or oily.
Engine oil level*: Check the level after parking
the vehicle on a level surface with the engine off.
Wait more than 10 minutes for the oil to drain
back into the oil pan. Exhaust system:
Visually inspect the exhaust
pipes, muffler and hangers for leaks, cracks, de-
terioration and damage. Tighten connections or
replace parts as necessary. For additional infor-
mation, refer to “Exhaust gas (carbon monoxide)”
in the “Starting and driving” section of this
manual.
Fluid leaks: Check under the vehicle for fuel, oil,
water or other fluid leaks after the vehicle has
been parked for a while. Water dripping from the
air conditioner after use is normal. If you should
notice any leaks or if fuel fumes are evident,
check for the cause and have it corrected imme-
diately.
Power steering fluid level* and lines: Check
the level when the fluid is cold, with the engine
off. Check the lines for proper attachment, leaks,
cracks, etc.
Radiator and hoses Check the front of the
radiator and clean off any dirt, insects, leaves,
etc., that may have accumulated. Make sure the
hoses have no cracks, deformation, rot or loose
connections.
9-4Maintenance and schedules

Underbody:The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances from the
underbody, otherwise rust may form on the floor
pan, frame, fuel lines and exhaust system. At the
end of winter, the underbody should be thor-
oughly flushed with plain water, in those areas
where mud and dirt may have accumulated. For
additional information, refer to the “Appearance
and care” section of this manual.
Windshield-washer fluid*: Check that there is
adequate fluid in the reservoir. The following descriptions are provided to give
you a better understanding of the scheduled
maintenance items that should be regularly
checked or replaced. The maintenance schedule
indicates at which mileage/time intervals each
item requires service.
Items marked with
“*”are recommended by
NISSAN for reliable vehicle operation. You are
not required to perform maintenance on these
items in order to maintain the warranties which
come with your NISSAN. Other maintenance
items and intervals are required.
When applicable, additional information can be
found in the “Do-it-yourself” section of this
manual.
NOTE: NISSAN does not advocate the use of
non-OEM approved aftermarket flushing sys-
tems and strongly advises against performing
these services on a NISSAN product. Many of the
aftermarket flushing systems use non-OEM ap-
proved chemicals or solvents, the use of which
has not been validated by NISSAN.
For recommended fuel, lubricants, fluids, grease,
and refrigerant, refer to “Recommended
fluids/lubricants and capacities” in the “Technical
and consumer information” section of this
manual.
EMISSION CONTROL SYSTEM
MAINTENANCE:
Drive Belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts.
Engine Air Filter:
Replace at specified intervals. When driving for
prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine Coolant*:
Replace coolant at the specified interval. When
adding or replacing coolant, be sure to use only
Genuine NISSAN Long Life Antifreeze/Coolant
(blue) or equivalent with the proper mixture. (For
additional information on the proper mixture for
your area, refer to Engine cooling system” in the
“Do-it-yourself” section of this manual or the “Ti-
tan Diesel Owner’s Manual”.)
NOTE: Mixing any other type of coolant or the use
of non-distilled water may reduce the recom-
mended service interval of the coolant.
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS
Maintenance and schedules9-5

Engine Oil and Oil Filter:
Replace engine oil and oil filter at the specified
intervals. For recommended oil grade and viscos-
ity refer to “Recommended fluids/lubricants and
capacities” in the “Technical and consumer infor-
mation” section of this manual.
Engine Valve Clearance* (gasoline engine
only):
Inspect only if valve noise increases. Adjust valve
clearance if necessary.
Evaporative Emissions Control Vapor
Lines* (gasoline engine only):
Check vapor lines for leaks or looseness. Tighten
connections or replace parts as necessary.
Fuel Filter (diesel engine only):
Replace the fuel filter and drain the water at the
specified intervals.
Fuel Lines*:
Check the fuel hoses, piping and connections for
leaks, looseness, or deterioration. Tighten con-
nections or replace parts as necessary.CHASSIS AND BODY
MAINTENANCE:
Brake Lines and Cables:Visually inspect for
proper installation. Check for chafing, cracks,
deterioration, and signs of leaking. Replace any
deteriorated or damaged parts immediately.
Brake Pads, Rotors, Drums, & Linings:
Check for wear, deterioration and fluid leaks.
Replace any deteriorated or damaged parts im-
mediately.
Exhaust System: Visually inspect the exhaust
pipes, muffler and hangers for leaks, cracks, de-
terioration, and damage. Tighten connections or
replace parts as necessary.
In-Cabin Microfilter: Replace at specified in-
tervals. When driving for prolonged periods in
dusty conditions, replace the filter more fre-
quently.
Propeller Shaft(s): Check for damage, loose-
ness, and grease leakage. (4WD/AWD/RWD) .
Steering Gear and Linkage, Axle and Sus-
pension Parts, Drive Shaft Boots: Check for
damage, looseness, and leakage of oil or grease.
Under severe driving conditions, inspect more
frequently. Tire Rotation:
Tires should be rotated every
5,000 miles (8,000 km) according to the instruc-
tions under “General maintenance” in this sec-
tion. When rotating tires, check for damage and
uneven wear. Replace if necessary.
Transmission Fluid/Oil, Differential Oil,
Transfer Case Oil: Visually inspect for signs of
leakage at specified intervals.
Replace automatic transmission fluid at specified
intervals. (For diesel engine models)
If towing a trailer, using a camper or car-top
carrier, or driving on rough or muddy roads:
● Replace the differential oil every
20,000 miles (32,000 km) or 24 months.
● Replace the automatic transmission fluid
ever 30,000 miles (48,000 km) or
24 months. (For gasoline engine models)
Off-Road Maintenance: Check the following
items frequently whenever you drive off-road
through deep sand, mud or water:
● Brake pads and rotors
● Brake linings and drums
● Brake lines and hoses
● Differential, transmission and transfer case
oil
9-6Maintenance and schedules

orange and black label with the common abbre-
viation or the appropriate percentage for that
region.
E–85 fuel
E-85 fuel is a mixture of approximately 85% fuel
ethanol and 15% unleaded gasoline. E-85 can
only be used in a Flexible Fuel Vehicle (FFV) . Do
not use E-85 in your vehicle. U.S. government
regulations require fuel ethanol dispensing
pumps to be identified by a small, square, orange
and black label with the common abbreviation or
the appropriate percentage for that region.
Fuel containing MMT
MMT, or methylcyclopentadienyl manganese tri-
carbonyl, is an octane boosting additive. NISSAN
does not recommend the use of fuel containing
MMT. Such fuel may adversely affect vehicle per-
formance, including the emissions control sys-
tem. Note that while some fuel pumps label MMT
content, not all do, so you may have to consult
your gasoline retailer for more details.
Aftermarket fuel additives
NISSAN does not recommend the use of any
aftermarket fuel additives (for example, fuel injec-
tor cleaner, octane booster, intake valve deposit
removers, etc.) which are sold commercially.
Many of these additives intended for gum, varnishor deposit removal may contain active solvents or
similar ingredients that can be harmful to the fuel
system and engine.
Octane rating tips
Using unleaded gasoline with an octane
rating lower than recommended 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, it is recommended that you have a
NISSAN dealer correct the condition. Fail-
ure to correct the condition is misuse of the
vehicle, for which NISSAN is not respon-
sible.
Incorrect ignition timing may result in spark
knock, after-run and/or overheating, which may
cause excessive fuel consumption or engine
damage. If any of the above symptoms are en-
countered, have your vehicle checked. It is rec-
ommended that you visit a NISSAN dealer for
servicing.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is not a
cause for concern, because you get thegreatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
10-6Technical and consumer information

LOCATION FOR CENTER OF
GRAVITY
The illustration indicates the recommended
cargo center of gravity location.
Crew Cab long wheel base:
L1 (diesel engine only) = 39.4 in (1,000 mm)
L1 (gasoline engine only) = 47.2 in (1,200 mm)
WARNING
Improper loading may be dangerous. If a
load is too far back, it can affect handling
characteristics. If a load is too far forward,
the front axle may be overloaded.
WARNING
Overloading or improper loading can ad-
versely affect vehicle handling, braking
and performance and may lead to
accidents.
VEHICLE LOAD WEIGHT CAPACITY
The vehicle payload weight capacity shown on
the Tire and Loading Information label, refer to
“Tire and Loading Information label” in this sec-
tion, indicates the maximum total weight of pas-
sengers, optional equipment (air conditioning,
trailer hitch, etc) and cargo that your vehicle is
designed to carry.
Before driving a loaded vehicle, confirm that you
do not exceed the GVWR or the GAWR for your
vehicle. For additional information, refer to “Ve-
hicle loading information” in this section.
Also check tires for proper inflation pressures.
For additional information, refer to the “Tire and
Loading Information label” in this section.
MEASUREMENT OF WEIGHTS
Secure loose items to prevent weight
shifts that could affect the balance of your
vehicle. When the vehicle is loaded, drive
to a scale and weigh the front and the rear
wheels separately to determine axle
loads. Individual axle loads should not ex-
ceed either of the gross axle weight rat-
ings (GAWR) . The total of the axle loads
should not exceed the gross vehicle
weight rating (GVWR) . These ratings are
given on the vehicle certification label. If
weight ratings are exceeded, move or re-
move items to bring all weights below the
ratings.
WTI0195
Technical and consumer information10-33

NOTE:
Trailer Sway Assist cannot reduce trailer
sway in all situations.● Be careful when passing other vehicles.
Passing while towing a trailer requires con-
siderably more distance than normal pass-
ing. Remember, the length of the trailer must
also pass the other vehicle before you can
safely change lanes.
● Use the Tow Mode or downshift the trans-
mission to a lower gear for engine braking
when driving down steep or long hills. This
will help slow the vehicle without applying
the brakes.
● Avoid holding the brake pedal down too long
or too frequently. This could cause the
brakes to overheat, resulting in reduced
braking efficiency.
● Increase your following distance to allow for
greater stopping distances while towing a
trailer. Anticipate stops and brake gradually.
● NISSAN recommends that the cruise con-
trol (if so equipped) not be used while tow-
ing a trailer. ●
Some states or provinces have specific
regulations and speed limits for vehicles that
are towing trailers. Obey the local speed
limits.
● Check your hitch, trailer wiring harness con-
nections, and trailer wheel lug nuts after
50 miles (80 km) of travel and at every break.
● When launching a boat, don’t allow the wa-
ter level to go over the exhaust tail pipe or
rear bumper.
● Make sure you disconnect the trailer lights
before backing the trailer into the water or
the trailer lights may burn out.
When towing a trailer, final drive gear oil
should be replaced and transmission
oil/fluid should be changed more fre-
quently. For additional information, refer to
the “Do-it-yourself” section in this manual.
Tow mode
Using tow mode is recommended when pulling a
heavy trailer or hauling a heavy load. Press the
TOW MODE switch to activate tow mode. The
indicator light on the TOW MODE switch illumi-
nates when tow mode is selected. Press the
TOW MODE switch again to turn tow mode off.
Tow mode is automatically canceled when the
ignition switch is turned off. Tow mode includes the following features:
● Grade logic — Adjusts transmission shifts
when pulling a trailer or hauling a load up a
grade.
● Downhill Speed Control (DSC) — automati-
cally downshifts when driving down a grade
with a trailer or heavy load to help control
vehicle speed.
Driving the vehicle in the tow mode with no
trailer/load or light trailer/light load will not cause
any damage. However, fuel economy may be
reduced and the transmission/engine driving
characteristics may feel unusual.
When towing a trailer, final drive gear oil
should be replaced and transmission
oil/fluid should be changed more fre-
quently. For additional information, refer to
the “Do-it-yourself” section of this manual.
FLAT TOWING FOR 2-WHEEL
DRIVE (2WD) VEHICLE (if so
equipped)
Towing your vehicle with all four wheels on the
ground is sometimes called flat towing. This
method is sometimes used when towing a vehicle
behind a recreational vehicle, such as a motor
home.
10-56Technical and consumer information