2012 INFINITI EX engine

GUID-FC5633A2-FD59-4507-B12A-58F793B8DABB
CAUTION
.Do not ground accessories directly to the
battery terminal. Doing so will bypass
the variable voltage control system and
the vehicle battery may not charge
completely.
. Use electrical accessories with the en-
gine running to avoid discharging the
vehicle battery.
The variable voltage control system mea-
sures the amount of electrical discharge
from the battery and controls voltage
generated by the generator.
GUID-3686748E-2EEC-429B-BEFA-78191D702FA3
SDI2152
VQ35HR engine
1. Power steering fluid pump
2. Alternator
3. Crankshaft pulley
4. Air conditioner compressor
5. Drive belt auto-tensioner
WARNING
Be sure the ignition switch is in the OFF or
LOCK position before servicing drive belts.
The engine could rotate unexpectedly.
1. Visually inspect each belt for signs of
unusual wear, cuts, fraying or loosen- ess. If the belt is in poor condition or
loose, have it replaced or adjusted by
an INFINITI retailer.
2. Have the belts checked regularly for condition and tension in accordance
with the maintenance schedule in your
“INFINITI Service and Maintenance
Guide”.
Maintenance and do-it-yourself8-17
VARIABLE VOLTAGE CONTROL SYSTEM DRIVE BELTS

8-18Maintenance and do-it-yourself
GUID-AE6B98B2-820E-46ED-892B-D3D84FBE5412
WARNING
Be sure the engine and the ignition switch
are off and that the parking brake is
engaged securely.
CAUTION
Be sure to use the correct socket to remove
the spark plugs. An incorrect socket can
damage the spark plugs.
SDI2020
REPLACING SPARK PLUGSGUID-49D7E044-4B04-40E9-BA4E-CF0EA30A67B9

GUID-A762655D-D645-4C3F-90D2-925E81145437
SDI2033
Remove the retainers*1as illustrated and
pull out the filter element
*2.
The filter element should not be cleaned
and reused. Replace it according to the
maintenance intervals. See “INFINITI Ser-
vice and Maintenance Guide” for mainte-
nance intervals. When replacing the filter, wipe the inside of the air cleaner housing
and the cover with a damp cloth.
WARNING
.
Operating the engine with the air
cleaner removed can cause you or others
to be burned. The air cleaner not only
cleans the air, it stops flame if the
engine backfires. If it isn’t there, and the
engine backfires, you could be burned.
Do not drive with the air cleaner
removed, and be careful when working
on the engine with the air cleaner
removed.
. Never pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result
in serious injury.
Maintenance and do-it-yourself8-19
AIR CLEANER

8-22Maintenance and do-it-yourself
SDI1479A
ENGINE COMPARTMENTGUID-2567A0EE-46EB-453B-A8E4-EC8A4F7728D6
CAUTION
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 cause a fire.
If any electrical equipment does not
operate, check for an open fuse.
Be sure the ignition switch is pushed to the
OFF or LOCK position and the headlight
switch is turned to OFF.1. Open the engine hood and remove the
battery cover.
2. Remove the fuse/fusible link holder
cover.
3. Remove the fuse with the fuse puller.
FUSES

STI0505
1. API certification mark
2. API service symbol
ENGINE OIL AND OIL FILTER RE-
COMMENDATION
GUID-5454D463-91D4-401A-AF5D-7F71A70A5A54

GUID-AF123535-077E-4954-B40D-7B7867FA3FF2
STI0425
VQ35HR engine
Technical and consumer information9-7
SPECIFICATIONS

STI0509
ENGINE SERIAL NUMBERGUID-ECC32CF8-AB9D-49B6-8673-A299713870E8
STI0493
F.M.V.S.S./C.M.V.S.S. CERTIFICA-
TION LABEL
GUID-924DD608-E217-44EA-9F95-0DE84D29E5AA
STI0422
EMISSION CONTROL INFORMATION
LABEL
GUID-CB1B1A15-E95B-41C6-A618-F665330A8982

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 after 20
seconds, the I/M test condition is “ready”.
Contact an INFINITI retailer to set the
“ready condition” or to prepare the vehicle
for testing.
GUID-00421227-094B-4488-927F-5F574CFEA15A