PRECAUTIONSEC-545
< PRECAUTION > [VQ35DE]
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•
B1 indicates bank 1, B2 indicates bank 2 as shown in the fig-
ure.
• Never operate fuel pump when there is no fuel in lines.
• Tighten fuel hose clamps to the specified torque.
• Never depress accelerator pedal when starting.
• Immediately after starting, n ever rev up engine unnecessarily.
• Never rev up engine just prior to shutdown.
• When installing C.B. ham radio or a mobile phone, be sure to
observe the following as it may adversely affect electronic
control systems depending on installation location.
- Keep the antenna as far as possible from the electronic con-
trol units.
- Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Never let them run parallel for a long distance.
- Adjust the antenna and feeder line so that the standing-wave
ratio can be kept smaller.
- Be sure to ground the radio to vehicle body.
SEC893C
SEF709Y
SEF708Y
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SYSTEMEC-583
< SYSTEM DESCRIPTION > [VQ35DE]
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INTAKE VALVE TIMING CONT
ROL : System DescriptionINFOID:0000000009462523
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM via the CAN communication line
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases c ontinuously with the fixed operating angle of the intake
valve.
The ECM receives signals such as crankshaft posit ion, camshaft position, engine speed, and engine coolant
temperature. Then, the ECM sends ON/OFF pulse duty si gnals to the intake valve timing (IVT) control sole-
noid valve depending on driving status. This makes it po ssible to control the shut/open timing of the intake
valve to increase engine torque in low/mid speed range and output in high-speed range.
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System De-
JPBIA4760GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed and piston position
Intake valve
timing control Intake valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine oil temperature sensor Engine oil temperature
Engine coolant temperature sensor Engine coolant temperature
Combination meter Vehicle speed signal*
JMBIA0060GB
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EC-588
< SYSTEM DESCRIPTION >[VQ35DE]
SYSTEM
INTEGRATED CONTROL OF ENGINE, CV T, AND ABS : System Description
INFOID:0000000009462527
Real time communications (signal exchange) among cont rol units (e.g. ECM, CVT, ABS, and combination
meter) via CAN communication optimizes engine torque and lock-up during gear shift and prevents engine
speed from decreasing during deceleration.
ALTERNATOR POWER GENERATION VOLTAGE VARIABLE CONTROL SYS-
TEM
ALTERNATOR POWER GENERATION VOLT AGE VARIABLE CONTROL SYSTEM :
System Description
INFOID:0000000009462528
The alternator power generation voltage variable contro l system controls the amount of power generation,
according to a battery loaded condition. ECM judges a battery condition, according to a signal received from
the battery current sensor which det ects a charge/discharge current. ECM then transmits a signal to IPDM E/
R to command power generation via CAN communication. IPDM E/R transmits a power generation control sig-
nal to the alternator so that the system can contro l the amount of power generation. The voltage of power gen-
eration is lowered during battery low-load conditions and boosted under heavy load conditions. In this way, the
system reduces the engine load thr ough the adequate power generation control.
For details, refer to CHG-10, "System Description"
.
CAN COMMUNICATION
CAN COMMUNICATION : System DescriptionINFOID:0000000009462529
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to LAN-32, "CAN COMMUNICA TION SYSTEM : CAN Communication Signal Chart"
, about CAN com-
munication for detail.
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EM-6
< PRECAUTION >[QR25DE]
PRECAUTIONS
4. Cover the serrated end of the valve with a large shop towel (A).
Strike the valve face end with a hammer, separating it into two
pieces.
5. Fill a bucket, such as a 20 (5-1/4 US gal, 4-3/8 Imp gal) oil can, with at least 10 (2-5/8 US gal, 2-1/4 lmp gal) of water.
Carefully place the already cut (serrated) valves into the water
one-at-a-time using a set of large tweezers and quickly move
away at least 2.7 m (9 ft).
6. The valves should be placed in a standing position as shown in the illustration to allow complete reaction. After the bubbling
action has subsided, additional valves can be placed into the
bucket allowing each subsequent chemical reaction to subside.
However, no more than 8 valves should be placed in the same
10 (2-5/8 US gal, 2-1/4 lmp gal) amount of water. The com-
plete chemical reaction may take as long as 4 to 5 hours.
Remove the valves using a set of large tweezers after the chem-
ical reaction has stopped. Afterwards, valves can be disposed
as ordinary scrap.
Precaution for Assembly and InstallationINFOID:0000000009460458
• Use torque wrench to tighten bolts or nuts.
• When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,
follow the specifications.
• Always replace the old with a new gas ket, packing, oil seal or O-ring.
• Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction
and blockage.
• Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.
• Bleed the air trapped within the system after draining the coolant.
• Before starting engine, apply fuel pressure to fuel li nes with turning ignition switch ON (with engine stopped).
Then make sure that there are no leaks at fuel line connections.
• After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems for leakage or rattles.
Parts Requiring Angular TighteningINFOID:0000000009460459
• Use an angle wrench for the final tightening of the following engine parts.
- Cylinder head bolts
- Lower cylinder block bolts
- Connecting rod cap bolts
- Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular tightening)
• Do not use a torque value for final tightening.
• The torque value for these parts are for a preliminary step.
• Ensure thread and seat surfaces are clean and coated with engine oil.
Precaution for Liquid GasketINFOID:0000000009460460
REMOVAL OF LIQUID GASKET
JPBIA4966ZZ
A : Bucket [Such as 20 (5-1/4 US gal, 4-3/8 Imp gal) oil can]
JPBIA4967ZZ
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SPARK PLUGEM-17
< PERIODIC MAINTENANCE > [QR25DE]
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• Do not use a wire brush for cleaning the spark plugs. Replace as
necessary.
• If plug is covered with carbon, a spark plug cleaner may be used.
• Checking and adjusting plug gap is not required between change intervals. If the gap is out of s pecification, replace the spark plug.
CAUTION:
Do not drop or shock plug.
INSTALLATION
Installation is in the reverse order of removal.
*: Always check with the Parts Department for the latest parts information.
CAUTION:
Always tighten the spark plug to sp ecified torque to align the orientation of electrodes. The ground
electrode of a genuine spark plug is positioned in the area of maximum ignitability by tightening to the
specified torque. When replacing spark plugs, use genuine spark plugs of which the ground electrode
is adjusted.
NOTE:
SMA773C
Cleaner air pressure : less than 588 kPa (6 kg/cm2, 85 psi)
Cleaning time : less than 20 seconds
SMA806CA
Standard type* DENSO
FXE20HE11C
Gap (nominal) 1.1 mm (0.043 in)
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OIL PAN AND OIL STRAINEREM-37
< REMOVAL AND INSTALLATION > [QR25DE]
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3. Remove the front exhaust tube and gaskets. Refer to
EX-5, "Exploded View".
4. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
5. Remove oil level gauge (1), oil level gauge guide (2), and O-ring (3).
CAUTION:
Do not reuse O-ring.
6. Disconnect the air fuel ratio sensor 1 electrical harness connector.
7. Remove the front driveshaft (LH) and front driveshaft (RH). Refer to FAX-10, "Removal and Installation
(LH)" and FAX-12, "Removal and Installation (RH)".
8. Remove the connecting rod (LH) and the connecting rod (RH). Refer to FSU-19, "Exploded View"
.
9. Remove the tie rod end from the steering knuckle ( RH) and the tie rod end from the steering knuckle (LH).
Refer to ST-36, "Exploded View"
.
10. Remove the power steering gear bolts and support the power steering gear. Refer to ST-36, "Removal
and Installation".
11. Remove the rear engine mount torque rod bracket. Refer to EM-84, "Removal and Installation"
.
12. Remove the front suspension member for clearance to remove the oil pan. Refer to FSU-20, "Removal
and Installation".
13. Disconnect the A/C compressor electrical harness connector.
14. Remove the drive belt. Refer to EM-19, "Removal and Installation"
.
15. Remove the A/C compressor bolts, position the A/C compressor aside and support. Refer to HA-30,
"COMPRESSOR : Removal and Installation".
16. Remove the lower oil pan bolts in the reverse order as shown, using power tool.
17. Remove the lower oil pan using Tool (A). CAUTION:
Be careful not to damage the mating surfaces.
NOTE:
In areas where the cutter is difficult to use, use a plastic hammer
to lightly tap (1) the cutter where the liquid gasket is applied. Use
a plastic hammer to slide (2) the cutter by tapping on the side.
ALBIA0910GB
ALBIA0830GB
Tool number : KV10111100 (J-37228)
AWBIA1249GB
Revision: November 20132014 Altima NAM
ROCKER COVEREM-45
< REMOVAL AND INSTALLATION > [QR25DE]
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ROCKER COVER
Exploded ViewINFOID:0000000009460490
Removal and InstallationINFOID:0000000009460491
REMOVAL
1. Disconnect the battery negative terminal. Refer to
PG-73, "Removal and Installation (Battery)".
2. Remove the engine room cover. Refer to EM-28, "Removal and Installation"
.
3. Remove the core support cover. Refer to EXT-17, "Removal and Installation"
.
4. Remove the front air duct. Refer to EM-29, "Removal and Installation"
.
5. Remove the RH engine mount torque rod. Refer to EM-84, "Removal and Installation"
.
6. Support the engine using a suitable jack.
7. Remove harness grounds from the top of the engine mount bracket.
8. Remove the RH engine support bracket. Refer to EM-84, "Removal and Installation"
.
9. Remove the RH engine mounting bracket. Refer to EM-84, "Removal and Installation"
.
10. Disconnect the PCV hose.
11. Remove the ignition coils. Refer to EM-40, "Removal and Installation"
.
12. Loosen the bolts in the numerical order as shown using power tool.
13. Remove the rocker cover and the rocker cover gasket. Discard the rocker cover gasket.
CAUTION:
Do not reuse the rocker cover gasket.
14. Remove the oil filler cap, (if necessary).
INSTALLATION
1. Oil filler cap 2. Rocker cover 3. Rocker cover gasket
A. Refer to INSTALLATION Engine front
AWBIA1317GB
ALBIA0836GB
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CAMSHAFTEM-51
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• Measure the outer diameter of t
he camshaft journal using suitable
tool (A).
Inner Diameter of Camshaft Bracket
• Tighten the camshaft bracket bolts to the specified torque following
the tightening pattern as shown.
• Using inside micrometer (A), measure inner diameter of camshaft bracket (1).
Calculation of Camshaft Journal Clearance
• (Journal clearance) = (inner diameter of camshaft bracket) – (outer diameter of camshaft journal)
• When out of the specified range above, replace either or both the camshaft and the cylinder head assembly.
NOTE:
Inner diameter of the camshaft bracket is manufac tured together with the cylinder head. If the camshaft
bracket is out of specification, replace the whole cylinder head assembly.
Camshaft End Play
Standard No.1 outer di-
ameter : 27.935 - 27.955 mm
(1.0998 - 1.1006 in)
Standard No.2, 3, 4, 5,
outer diameter : 23.435 - 23.455 mm
(0.9226 - 0.9234 in)
PBIC3179J
Step 1 (bolts 9 - 11) : 1.96 N·m (0.2 kg-m, 17 in-lb)
Step 2 (bolts 1 - 8) : 1.96 N·m (0.2 kg-m, 17 in-lb)
Step 3 (bolts 1 - 11) : 5.88 N·m (0.6 kg-m, 52 in-lb)
Step 4 (bolts 1 - 11) : 10.4 N·m (1.02 kg-m, 92 in-lb)
(A) : Intake side
(B) : Exhaust side
: Engine front
ALBIA0846GB
Standard
No.1 : 28.000 - 28.021 mm (1.1024 - 1.1032 in)
Standard
No.2, 3, 4, 5 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
ALBIA0903GB
Standard : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
Revision: November 20132014 Altima NAM