2023 NISSAN ALTIMA ignition

If any electrical equipment does not oper-
ate, check for an open fuse.
Fuses are used in the passenger and en-
gine compartment. Spare fuses are pro-
vided and can be found in the passenger
compartment fuse box.
When installing a fuse make sure the fuse is
installed in the fuse box securely.ENGINE COMPARTMENT
WARNING
Never use a fuse of a higher or lower
amperage rating than that specified on
the fuse box cover. This could damage
the electrical system or electronic con-
trol 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 head-
light switch are OFF.
2. Open the engine hood.
3. Remove the fuse box cover by pushing the tab and lif ting 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.
LDI2997LDI3274
FUSES
Do-it-yourself8-21

5. If the fuse is openOA, replace it with a
new fuse
OB.
6. If a new fuse also opens, have the elec- trical system checked and repaired. It is
recommended that you visit a NISSAN
dealer for this service.
Fusible links
If the electrical equipment does not oper-
ate and fuses are in good condition, check
the fusible links. If any of these fusible links
are melted, replace with only Genuine
NISSAN parts.
PASSENGER COMPARTMENT
WARNING
Never use a fuse of higher or lower am-
perage rating than that specified on
the fuse box cover. This could damage
the electrical system or electronic con-
trol units or cause a fire. If any electrical equipment does not oper-
ate, check for an open fuse.
1. Be sure the ignition switch and the head-
light switch are in the OFF position.
2. Remove the fuse box cover
OAwith a
suitable tool. Use a cloth to avoid dam-
aging the trim.
LDI3200LDI3275
8-22Do-it-yourself

Fuel containing MMT
MMT, or methylcyclopentadienyl manga-
nese tricarbonyl, is an octane boosting ad-
ditive. NISSAN does not recommend the
use of fuel containing MMT. Such fuel may
adversely affect vehicle performance, in-
cluding the emissions control system. Note
that while some fuel pumps label MMT
content, not all do, so you may have to
consult your gasoline retailer for more
details.
Af termarket fuel additives
NISSAN does not recommend the use of
any af termarket fuel additives (for ex-
ample, fuel injector cleaner, octane
booster, intake valve deposit removers,
etc.) which are sold commercially. Many of
these additives intended for gum, varnish
or deposit removal may contain active sol-
vents 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 severe, 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 recom-
mended that you have a NISSAN dealer
correct the condition. Failure to correct
the condition is misuse of the vehicle, for
which NISSAN is not responsible.
Incorrect ignition timing may result in
spark knock, af ter-run and/or overheating,
which may cause excessive fuel consump-
tion or engine damage. If any of the above
symptoms are encountered, have your ve-
hicle checked. It is recommended 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 the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
10-6Technical and consumer information

ENGINE
Model2.5L 4 cylinder (PR25DD engine model) 2.0L 4 cylinder (KR20DDET engine model)
Type Gasoline, 4-cycle, DOHCGasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder, inline4-cylinder, inline
Bore x Stroke in (mm) 3.504 x 3.937 (89.0 x 100.0)
when compression ratio = 8 in (mm) 3.307 x 3.547 (84.0 x 90.1)
when compression ratio = 14 in (mm) 3.307 x 3.500 (84.0 x 88.9)
Displacement cu in (cm
3)151.85 (2,488)
when compression ratio = 8 cu in (cm3) 121.86 (1,997)
when compression ratio = 14 cu in (cm3) 120.22 (1,970)
Firing order 1–3–4–21–3–4–2
Idle speed
CVT in N (Neutral) position No adjustment is necessary.
Ignition timing (degree B.T.D.C. at idle speed)
CO%atidle
Spark plug DXE22H11CDILKAR7N9HG
Spark plug gap (Nominal) in (mm)0.043 (1.1) 0.035 (0.9)
Camshaf t operation Timing chainTiming chain
This spark ignition system complies with the Canadian standard ICES-002.
SPECIFICATIONS
Technical and consumer information10-9

WARNING
A vehicle equipped with All -Wheel
Drive (AWD) should never be tested us-
ing a two wheel dynamometer (such as
the dynamometers used by some
states for emissions testing), or similar
equipment. Make sure you inform the
test facility personnel that your vehicle
is equipped with AWD before it is placed
on a dynamometer. Using the wrong
test equipment may result in drivetrain
damage or unexpected vehicle move-
ment which could result in serious ve-
hicle damage or personal injury.
Due to legal requirements in some states
and Canadian Provinces, your vehicle may
be required to be in what is called the
“ready condition” for an Inspection/
Maintenance (I/M) test of the emission
control system.
The vehicle is set to the “ready condition”
when it is driven through certain driving
patterns. Usually, the ready condition can
be obtained by ordinary usage of the
vehicle. If a powertrain system component is re-
paired or the battery is disconnected, the
vehicle may be reset to a “not ready ” condi-
tion. Before taking the I/M test, check the
vehicle's inspection/maintenance test
readiness condition. Place the ignition
switch in the ON position without starting
the engine. If the Malfunction Indicator
Light (MIL) comes on steady for 20 seconds
and then blinks for 10 seconds , the I/M test
condition is “not ready”. If the MIL does not
blink af ter 20 seconds, the I/M test condi-
tion is “ready ”. It is recommended that you
visit a NISSAN dealer to set the “ready con-
dition” or to prepare the vehicle for testing.
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an
EDR is to record, in certain crash or near
crash-like situations, such as an air bag
deployment or hitting a road obstacle, data
that will assist in understanding how a ve-
hicle's systems performed. The EDR is de-
signed to record data related to vehicle dy-
namics and safety systems for a short
period of time, typically 30 seconds or less.
The EDR in this vehicle is designed to re-
cord such data as:
• How various systems in your vehicle were
operating;
• Whether or not the driver and passenger safety belts were buckled/fastened;
• How far (if at all) the driver was depress- ing the accelerator and/or brake pedal;
and,
• How fast the vehicle was traveling.
• Sounds are not recorded.
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST EVENT DATA RECORDERS (EDR)
10-24Technical and consumer information

Starting the engine............5-16Engine Block Heater.............5-186Engine coolant temperature gauge. . . .2-6Event Data recorders........10-24, 10-25Exhaust gas (Carbon monoxide)......5-4Explanation of maintenance items.....9-2Explanation of scheduled maintenance
items.......................9-5Extended storage switch..........2-70Eyeglass case.................2-73
F
F.M.V.S.S. certification label.........10-13Flashers (See hazard warning flasher
switch)......................6-2Flat tire...................6-3, 6-4Floor mat positioning aid...........7-6Fluid
Brake fluid..................8-12Capacities and recommended
fuel/lubricants...............10-2Continuously Variable Transmission (CVT)
fluid......................8-12Engine coolant................8-5Engine oil...................8-7Windshield-washer fluid.........8-13Fog light switch................2-63Front air bag system (See supplemental
restraint system)...............1-54Front power seat adjustment........1-4Front seats....................1-2Front-door pocket...............2-71
FuelCapacities and recommended
fuel/lubricants
...............10-2Fuel economy...............5-168Fuel gauge..................2-7Fuel octane rating.............10-6Fuel recommendation..........10-4Fuel-filler door and cap..........3-25Fuel-filler door lock opener lever. . . .3-25Loose fuel cap warning......2-30, 2-46Fuel efficient driving tips..........5-167Fuel gauge....................2-7Fuel-filler door.................3-25Fuses.......................8-21Fusible links..................8-22
G
Garage door opener, HomeLink® Universal
Transceiver............2-81, 2-83, 2-84Gas cap.....................3-25GaugeEngine coolant temperature gauge. . .2-6Fuel gauge..................2-7Speedometer................2-4Tachometer................ .2-6Trip odometer................2-5General maintenance.............9-2Glove box....................2-72Glove box lock.................2-72
H
Hands-free phone system, Bluetooth®. .4-67Hazard warning flasher switch........6-2Head restraints.................1-8Headlight and turn signal switch.....2-57Headlight control switch...........2-57Headlights...................8-25Heated seat switches............2-64Heated steering wheel............2-65Heater
Heater and air conditioner
controls
................4-33, 4-41Heater operation..........4-34, 4-42Hill start assist system...........5-178HomeLink® Universal
Transceiver............2-81, 2-83, 2-84Hood.......................3-22Horn...................... .2-64
I
Ignition switch
Push-button ignition switch.......5-13Immobilizer system..........2-54, 5-16Important vehicle information label. . .10-13In-cabin microfilter..............8-18Increasing fuel economy..........5-168IndicatorNISSAN Intelligent Key® battery discharge
indicator
...................5-15Inside automatic anti-glare mirror. . . .3-29Instrument brightness control.......2-62
11-3