check engine NISSAN ALTIMA SEDAN 2015 Service Manual

CHECKING ENGINE COOLANT
LEVEL
Check the coolant levelin the reservoir when
the engine is cold. If the coolant level is below
the MIN level
B, add coolant to the MAX level
A. If the reservoir is empty, check the coolant
level in the radiator when the engine is cold. If
there is insufficient coolant in the radiator, fill the
radiator with coolant up to the filler opening and
also add it to the reservoir up to the MAX level
A.
This vehicle contains Genuine NISSAN Long Life
Antifreeze/Coolant (blue) . The life expectancy of
the factory-fill coolant is 105,000 miles
(168,000 km) or 7 years. Mixing any other type of coolant or the use of non-distilled water will re-
duce the life expectancy of the factory-fill coolant.
For additional information, refer to the NISSAN
Service and Maintenance Guide.
For additional information on the location of the
engine coolant reservoir, refer to “Engine com-
partment check locations” in this section.
If the cooling system frequently requires
coolant, have it checked by a NISSAN
dealer.
CHANGING ENGINE COOLANT
A NISSAN dealer can change the engine coolant.
The service procedure can be found in the
NISSAN Service Manual.
Improper servicing can result in reduced
heater performance and engine overheat-
ing.
WARNING
●
To avoid the danger of being scalded,
never change the coolant when the en-
gine is hot.
● Never remove the radiator cap when the
engine is hot. Serious burns could be
caused by high pressure fluid escaping
from the radiator. ●
Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner as
soon as possible.
● Keep coolant out of the reach of chil-
dren and pets.
Engine coolant must be disposed of properly.
Check your local regulations.
LDI2119
8-10Maintenance and do-it-yourself

CHECKING ENGINE OIL LEVEL
1. Park the vehicle on a level surface and applythe parking brake.
2. Start the engine and let it idle until it reaches operating temperature.
3. Turn off the engine. Wait more than
10 minutes for the oil to drain back into
the oil pan.
4. Remove the dipstick and wipe it clean. Re- insert it all the way. 5. Remove the dipstick again and check the oil
level. It should be between the H (High) and
L (Low) marksB. This is the normal oper-
ating oil level range. If the oil level is below
the L (Low) mark
A, remove the oil filler cap
and pour recommended oil through the
opening. Do not overfill
C.
6. Recheck oil level with the dipstick.
It is normal to add some oil between oil
maintenance intervals or during the
break-in period, depending on the severity
of operating conditions.
QR25DE engine
LDI2120
VQ35DE engine
LDI2121WDI0214
ENGINE OIL
Maintenance and do-it-yourself8-11

CAUTION
●Oil level should be checked regularly.
Operating the engine with an insuffi-
cient amount of oil can damage the
engine, and such damage is not covered
by warranty.
● It is normal to add some oil between oil
maintenance intervals or during the
break-in period, depending on the se-
verity of operating conditions.
CHANGING ENGINE OIL
1. Park the vehicle on a level surface and apply
the parking brake.
2. Start the engine and let it idle until it reaches operating temperature, then turn it off. 3. Remove the oil filler cap
Bby turning it
counterclockwise.
4. Place a large drain pan under the drain plug
A.
5. Remove the drain plug
Awith a wrench by
turning it counterclockwise and completely
drain the oil.
If the oil filter is to be changed, remove and
replace it at this time. For additional informa-
tion, refer to “Changing engine oil filter” in
this section.
● Waste oil must be disposed of prop-
erly.
● Check your local regulations.
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.
LDI2338
8-12Maintenance and do-it-yourself

CAUTION
Be careful not to burn yourself. The engine
oil may be hot.6. Clean and reinstall the drain plug
Aand a
new washer. Securely tighten the drain plug
with a wrench. Do not use excessive force.
Drain plug tightening torque: 25 Ft-lb (34 N·m)
7. Refill engine with recommended oil through the oil filler opening, then install the oil filler
cap securely.
For additional information, refer to “Recom-
mended fluids/lubricants and capacities” in
the “Technical and consumer information”
section of this manual for drain and refill
capacity.
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 when the proper
amount of oil is in the engine.
8. Start the engine. Check for leakage around the drain plug and oil filter. Correct as re-
quired. 9. Turn the engine off and wait more than
10 minutes. Check the oil level with the
dipstick. Add engine oil if necessary.
CHANGING ENGINE OIL FILTER
1. Park the vehicle on a level surface and apply
the parking brake.
2. Turn the engine off.
3. Place a large drain pan under the oil filter
B.
LDI2342
Maintenance and do-it-yourself8-13

4. Remove pinsCfrom the right engine pro-
tector located inside right wheel well, re-
move protector. Remove oil filter
Bwith an
oil filter wrench by turning it counterclock-
wise. Then remove the oil filter by turning it
by hand.
CAUTION
Be careful not to burn yourself. The engine
oil may be hot.
5. Wipe the engine oil filter sealing surface with a clean rag.
CAUTION
●Be sure to remove any old gasket
material remaining on the sealing
surface of the engine. Failure to do
so could lead to an oil leak and en-
gine 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 on the oil filter until a slight resistance is felt, then tighten an additional 2/3 turn. 8. Start the engine and check for leakage
around the oil filter. Correct as required.
9. Turn the engine off and wait more than 10 minutes. Check the oil level. Add engine
oil if necessary.
CAUTION
●NISSAN recommends using Genuine
NISSAN CVT Fluid NS-3 ONLY in
NISSAN CVTs. Do not mix with other
fluids.
● Do not use Automatic transmission
fluid (ATF) or Manual transmission fluid
in a NISSAN CVT, as it may damage the
CVT. Damage caused by the use of flu-
ids other than as recommended is not
covered under NISSAN’s New Vehicle
Limited Warranty.
● Using fluids that are not equivalent to
Genuine NISSAN CVT Fluid NS-3 may
also damage the CVT. Damage caused
by the use of fluids other than as recom-
mended is not covered under NISSAN’s
New Vehicle Limited Warranty.
When checking or replacement of CVT fluid is
required, we recommend a NISSAN dealer for
servicing.
CONTINUOUSLY VARIABLE
TRANSMISSION (CVT) FLUID
8-14Maintenance and do-it-yourself

BRAKE FLUID
Check the brake fluid level in the reservoir. If the
fluid level is below the MIN line
Bor the brake
warning light comes on, add Genuine NISSAN
Super Heavy Duty Brake Fluid or equivalent DOT
3 fluid up to the MAX line
A. If fluid must be
added frequently, the system should be checked
by a NISSAN dealer.
WINDSHIELD-WASHER FLUID
RESERVOIR
Fill the windshield-washer fluid reservoir periodi-
cally. Add windshield-washer fluid when the low
windshield-washer fluid warning light comes on.
To fill the windshield-washer fluid reservoir, lift
the cap off the reservoir and pour the windshield-
washer fluid into the reservoir opening.
Add a washer solvent to the washer for better
cleaning. In the winter season, add a windshield
washer antifreeze. Follow the manufacturer’s in-
structions for the mixture ratio. Refill the reservoir more frequently when driving
conditions require an increased amount of
windshield-washer fluid.
Recommended fluid is Genuine NISSAN Wind-
shield Washer Concentrate Cleaner & Antifreeze
or equivalent.
WARNING
Antifreeze is is poisonous and should be
stored carefully in marked containers out
of the reach of children.
CAUTION
●
Do not substitute engine antifreeze
coolant for windshield-washer fluid.
This may result in damage to the paint.
● Do not fill the windshield-washer fluid
reservoir with washer fluid concen-
trates at full strength. Some methyl al-
cohol based washer fluid concentrates
may permanently stain the grille if
spilled while filling the windshield-
washer fluid reservoir.LDI2125LDI2116
WINDSHIELD-WASHER FLUID
8-16Maintenance and do-it-yourself

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.
Contact a NISSAN dealer.
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 is 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.
LDI2132
VARIABLE VOLTAGE CONTROL
SYSTEM
Maintenance and do-it-yourself8-19

1. Crankshaft pulley
2. Drive belt automatic tensioner pulley
3. Water pump pulley
4. Generator pulley
5. Air compressor pulley
WARNING
Be sure the ignition switch is placed 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 by a NISSAN dealer.
2. Have the belt checked regularly for condi- tion and tension in accordance with the
maintenance schedule found in the
“NISSAN Service and Maintenance Guide”.
1. Crankshaft pulley
2. Drive belt automatic tensioner pulley
3. Generator pulley
4. Air compressor pulley
QR25DE engine
LDI2130
VQ35DE engine
LDI2131
DRIVE BELT
8-20Maintenance and do-it-yourself

If the brakes do not operate properly, have the
brakes checked by a NISSAN dealer.
Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front and rear disc-type brakes self-adjust
every time the brake pedal is applied.
WARNING
See a NISSAN dealer for a brake system
check if the brake pedal height does not
return to normal.
Brake pad wear indicators
The disc brake pads on your vehicle have audible
wear indicators. When a brake pad requires re-
placement, a high pitched scraping or screech-
ing sound will be heard when the vehicle is in
motion. The noise will be heard whether or not the
brake pedal is depressed. Have the brakes
checked as soon as possible if the wear indicator
sound is heard.
Under some driving or climate conditions, occa-
sional brake squeak, squeal or other noise may
be heard. Occasional brake noise during light to
moderate stops is normal and does not affect the
function or performance of the brake system.Proper brake inspection intervals should
be followed.
For additional information regard-
ing brake inspections, refer to the appropriate
maintenance schedule information in the
“NISSAN Service and Maintenance Guide”.
Two types of fuses are used. Type
Ais used in
the fuse boxes in the engine compartment. Type
Bis used in the passenger compartment fuse
box.
Type
Afuses are provided as spare fuses. They
are stored in the passenger compartment fuse
box.
Type
Afuses can be installed in the engine
compartment and passenger compartment fuse
boxes.
LDI0455
BRAKES FUSES
8-24Maintenance and do-it-yourself

If a typeAfuse is used to replace a typeBfuse,
the type
Afuse will not be level with the fuse
pocket as shown in the illustration. This will not
affect the performance of the fuse. Make sure the
fuse is installed in the fuse box securely.
Type
Bfuses cannot be installed in the under-
hood fuse boxes. Only use type
Afuses in the
underhood fuse boxes.
ENGINE COMPARTMENT
CAUTION
Never use a fuse of a higher or lower
amperage rating than specified on the
fuse box cover. This could damage the
electrical system 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.
LDI0457LDI2133
Maintenance and do-it-yourself8-25