PRECAUTIONSEM-123
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951676
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for Draining CoolantINFOID:0000000009460515
• Drain coolant when engine is cooled.
Precaution for Disconnecting Fuel PipingINFOID:0000000009460516
• Before starting work, make sure no fire or spark producing items are in the work area.
• Release fuel pressure before disassembly.
• After disconnecting pipes, plug openings to stop fuel leakage.
Precaution for Removal and DisassemblyINFOID:0000000009460517
• When instructed to use special service tools, use the spec ified tools. Always be careful to work safely, avoid
forceful or uninstructed operations.
• Exercise maximum care to avoid damage to mating or sliding surfaces.
• Cover openings of engine system with tape or the equiva lent, if necessary, to seal out foreign materials.
• Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.
• When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specif ied, do exactly as specified. Power tools may be used
where noted in the step.
Precaution for Inspection, Repair and ReplacementINFOID:0000000009460518
• Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precaution for Assembly and InstallationINFOID:0000000009460519
• Use torque wrench to tighten bolts or nuts to specification.
Revision: November 20132014 Altima NAM
EM-142
< PERIODIC MAINTENANCE >[VQ35DE]
COMPRESSION PRESSURE
COMPRESSION PRESSURE
On-Vehicle ServiceINFOID:0000000009460536
CHECKING COMPRESSION PRESSURE
1. Run the engine until it reaches normal operating temperature.
2. Turn the ignition switch to OFF.
3. Release fuel pressure and leave t he fuel pump electrically disconnected.
Refer to EC-687, "Work Procedure"
.
4. Remove all six spark plugs. Refer to EM-132, "Removal and Installation"
.
5. Install the compression tester with the adapter into the spark plug hole. • Use compression tester whose end (a) (rubber portion) is
smaller than 20 mm (0.79 in) in diameter. Otherwise, it may be
caught by cylinder head during removal.
6. Depress accelerator pedal fully to keep the electric throttle control actuator butterfly-valve wide open to
maximize air intake flow.
7. Crank the engine and record the highest gauge indication.
8. Repeat the measurement on each cylinder (steps 5 - 7). NOTE:
Always use a fully charged battery to obtain specified engine speed.
Unit: kPa (kg/cm2, psi)/rpm
9. If compression in one or more cylinders is low:
a. Pour a small amount of engine oil into cylinders through the spark plug holes.
b. Retest compression (steps 5 - 8).
• If adding oil helps raise compression pressure, then the piston rings may be worn or damaged. If so, replace piston rings after checking piston.
• If the pressure stays low, a valve may be sticking or is seating improperly. Inspect and repair the valve and/
or valve seat. Refer to EM-212, "Inspection After Disassembly"
. If the valve and/or valve seat is damaged
replace as necessary.
• If compression stays low in two or more cylinders that are next to each other:
- The cylinder head gasket may be leaking.
- Both cylinders may have valve component damage. Inspect and repair as necessary.
JPBIA0171ZZ
Standard Minimum Difference limit between cylinders
1,275 (13.0, 185)/300 981 (10.0, 142)/300 98 (1.0, 14)/300
Revision: November 20132014 Altima NAM
INTAKE MANIFOLDEM-149
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INTAKE MANIFOLD
Exploded ViewINFOID:0000000009460543
Removal and InstallationINFOID:0000000009460544
REMOVAL
WARNING:
To avoid the danger of being scalded, do no t drain the coolant when the engine is hot.
1. Release the fuel pressure. Refer to EC-687, "Work Procedure"
.
2. Disconnect the battery negative terminal. Refer to PG-73, "Removal and Installation (Battery)"
.
3. Remove intake manifold collector. Refer to EM-146, "Removal and Installation"
.
4. Disconnect fuel tube quick connector (1) at fuel tube (3) side. Refer to EM-163, "Removal and Installation"
.
5. Remove fuel injector and fuel tube. Refer to EM-163, "Removal and Installation"
.
1. Intake manifold 2. Intake manifold gaskets A. Refer to INSTALLATION
Engine front
AWBIA1348ZZ
(2) : Quick connector release
(A) : Holding position
JPBIA1854ZZ
Revision: November 20132014 Altima NAM
EM-152
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Removal and Installation (LH)
INFOID:0000000009460546
REMOVAL
WARNING:
• Perform the work when the exhaust system has completely cooled down.
• When removing the front and rear engine mounting th rough bolts and nuts, lift the engine up slightly
for safety.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
1. Remove the air cleaner assembly, and air duct hose and resonator assembly. Refer to EM-144, "Removal
and Installation".
2. Remove the battery and battery tray assembly. Refer to PG-74, "Removal and Installation (Battery Tray)"
.
3. Remove the engine under cover. Refer to EXT-28, "Removal and Installation"
.
4. Remove the radiator assembly. Refer to CO-41, "Removal and Installation"
.
5. Remove the engine cooling fan shroud and motor assembly. Refer to CO-42, "Removal and Installation"
.
6. Remove the front exhaust tube. Refer to EX-10, "Exploded View"
.
7. Remove the LH three way catalyst support brackets.
8. Remove heated oxygen sensor 2 (bank 2), air fuel ratio (A/F) sensor 1 (bank 2).
a. Remove harness connector of each sensor, and di sconnect the harness from the bracket and middle
clamp.
b. Remove both heated oxygen sensor 2 and air fuel ratio (A/F) sensor 1 using Tool.
CAUTION:
• Be careful not to damage heated oxygen sen sors 2 or air fuel ratio (A/F) sensors 1.
• Discard any heated oxygen sensor 2 which has been dropped from a height of more than 0.5 m
(19.7 in) onto a hard surface such as a co ncrete floor; replace with a new sensor.
9. Remove exhaust manifold heat shield (LH) and three way catalyst heat shields (LH) using power tool.
10. Remove the three way catalyst (bank 2) by loosening the bolts first and then removing the nuts and through bolts.
11. Loosen and remove the exhaust manifold nuts in the reverse order as shown.
NOTE:
Number 7 and 8 are not applicable to removal.
12. Remove the exhaust manifold (LH) and gasket.
INSPECTION AFTER REMOVAL
Surface Distortion Tool numbers : KV10114400 (J-38365)
: KV991J0050 (J-44626)
: Engine front
AWBIA1208GB
Revision: November 20132014 Altima NAM
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IGNITION COIL
IGNITION COIL
Exploded ViewINFOID:0000000009460551
Removal and Installation LHINFOID:0000000009460552
REMOVAL
1. Remove engine room cover. Refer to
EM-143, "Removal and Installation".
2. Disconnect ignition coil harness connector.
3. Remove the ignition coil. CAUTION:
Do not shock ig nition coil.
INSTALLATION
Installation is in the reverse order of removal.
Removal and Installation RHINFOID:0000000009460553
REMOVAL
1. Disconnect the battery negative terminal. Refer to PG-73, "Removal and Installation (Battery)".
2. Remove the intake manifold collector. Refer to EM-146, "Removal and Installation"
.
3. Disconnect ignition coil harness connector.
4. Remove the ignition coil. CAUTION:
Do not shock ig nition coil.
INSTALLATION
Installation is in the reverse order of removal.
1. Ignition coil 2. Spark plug 3. Rocker cover (RH)
4. Rocker cover (LH)
AWBIA1347ZZ
Revision: November 20132014 Altima NAM
FUEL INJECTOR AND FUEL TUBEEM-163
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FUEL INJECTOR AND FUEL TUBE
Exploded ViewINFOID:0000000009460554
CAUTION:
• Apply new engine oil when installi ng the parts as specified to do so.
• Do not remove or disassemble part s unless instructed as shown.
Removal and InstallationINFOID:0000000009460555
REMOVAL
WARNING:
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventila ted area and furnish workshop with a CO
2 fire extinguisher.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
• To avoid the danger of being scalded, do no t drain engine coolant when engine is hot.
1. Remove engine room cover. Refer to EM-143, "Removal and Installation"
.
2. Release the fuel pressure. Refer to EC-687, "Work Procedure"
.
3. Disconnect the battery negative terminal. Refer to PG-73, "Removal and Installation (Battery)"
.
4. Remove front wiper arm and cowl top extension. Refer to EXT-24, "Removal and Installation"
.
5. Remove strut tower bar. Refer to FSU-19, "Exploded View"
.
AWBIA1351ZZ
1. Fuel feed hose 2. Quick connector cap 3. Fuel tube
4. O-ring 5. Fuel damper 6. Fuel damper cap
7. Clip 8. O-ring (black) 9. Fuel injector
10. O-ring (green) A. Refer to INSTALLATION
Revision: November 20132014 Altima NAM
EM-164
< REMOVAL AND INSTALLATION >[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
6. Remove the electric throttle cont
rol actuator bolts in the reverse
order as shown and remove the electric throttle control actuator
and position aside.
CAUTION:
• Handle carefully to avoid any shock to the electric throttle
control actuator.
• Do not disassemble.
7. Remove intake manifold collector. Refer to EM-146, "Removal and Installation"
.
8. When separating fuel feed hose and fuel tube connection, disconnect quick connector as follows:
a. Remove quick connector cap from quick connector.
b. Disconnect quick connector from fuel tube as follows: CAUTION:
Disconnect quick connector by using the quick connector release (commercial service tool: J-
45488), not by picking out retainer tabs.
i. With the sleeve side of quick connector release fa cing to quick connector, install the quick connector
release onto fuel tube.
ii. Insert the quick connector release (A) into quick connector (2) until sleeve (B) contacts and goes no further. Hold quick connec-
tor release on that position.
CAUTION:
Inserting quick connector re lease hard will not disconnect
quick connector. Hold qui ck connector release where it
contacts and goes no further.
iii. Draw and pull out quick connector straight from fuel tube (1). CAUTION:
• Do not reuse O-ring.
• Pull quick connector (E) ho lding position (D) as shown.
• Do not pull with lateral force applied. O-ring inside quick connector may be damaged.
• Prepare container and cloth beforehand as fuel will leak out.
• Avoid fire and sparks.
• Keep parts away from heat source. Especially, be careful when welding is performed around
them.
• Do not expose parts to battery electrolyte or other acids.
• Do not bend or twist connection between quick connector and fuel feed hose (with damper) dur-
ing installati on/removal.
• To keep clean the connecting portion and to avoid dam-
age and foreign materials, cover them completely with
plastic bags, etc. (A) or something similar.
9. Disconnect harness connector from fuel injector.
SEM711G
(C) : Insert and retain
JPBIA0033ZZ
JPBIA0035ZZ
Revision: November 20132014 Altima NAM
FRONT TIMING CHAIN CASEEM-175
< REMOVAL AND INSTALLATION > [VQ35DE]
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REMOVAL
1. Remove engine under cover. Refer to
EXT-28, "Removal and Installation".
2. Drain the engine coolant from the radiator. Refer to MA-23, "ENGINE COOLANT : Changing Engine Cool-
ant".
3. Drain the engine oil. Refer to MA-27, "ENGINE OIL : Changing Engine Oil"
.
4. Drain the power steering fluid. Refer to ST-30, "Draining and Refilling"
.
5. Remove engine room cover. Refer to EM-143, "Removal and Installation"
.
6. Remove front air duct. Refer to EM-144, "Removal and Installation"
.
7. Remove battery tray. Refer to PG-74, "Removal and Installation (Battery Tray)"
.
8. Remove the hood ledge covers (LH/RH).
9. Remove cowl top and cowl top extension. Refer to EXT-24, "Removal and Installation"
.
10. Remove upper radiator hose.
11. Disconnect engine coolant reservoir hose from t he radiator and remove engine coolant reservoir.
12. Remove cooling fan assembly. Refer to CO-42, "Removal and Installation"
.
13. Disconnect lower radiator hose from engine.
14. Remove the radiator. Refer to CO-41, "Removal and Installation"
.
15. Disconnect the power steering fluid reservoir tank hose from the power steering pump and fluid cooler and
remove the power steering fluid reservoir tank. Refer to ST-38, "Exploded View"
.
16. Remove the front RH wheel and tire. Refer to MA-39, "WHEELS : Adjustment"
.
17. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
18. Remove the drive belt. Refer to EM-134, "Removal and Installation"
.
19. Remove the rocker covers, if necessary. Refer to EM-168, "Removal and Installation LH"
and EM-169,
"Removal and Installation RH".
NOTE:
Necessary only when removing timing chains.
20. If removing the timing chains, obtain compression TDC of No. 1 cylinder as follows:
a. Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing indicator.
b. Check that intake and exhaust camshaft lobes on No. 1 cylinder (right bank of engine) are located as shown.
• If not, turn the crankshaft one revolution (360 °) and align as
shown.
21. Remove the access plate and lock the ring gear using Tool. CAUTION:
JMBIA1135GB
SEM418G
Tool number : — (J-50288)
Revision: November 20132014 Altima NAM