EM-232
< UNIT DISASSEMBLY AND ASSEMBLY >[VQ35DE]
CYLINDER BLOCK
c. Install the snap ring into the front of the piston pin-groove.
• After installing, check that the connecting rod pivots smoothlyon the pin.
CAUTION:
Do not reuse snap rings.
11. Using a piston ring expander, install the piston rings. CAUTION:
• Be careful not to damage the piston.
• When the piston rings are not replaced, remount the rings
in their original positions.
• When replacing the piston ri ngs, those without stamped
surface (A) can be mounted either side up.
• Install the second ring with the stamped surface (B) facing upward. If the ring is not stamped it can face in either
direction.
• Position each ring with the gap as shown, referring to the pis- ton front mark.
12. Install the connecting rod bearings to the connecting rod and the connecting rod cap.
• When installing the connecting rod bearings, apply engine oil to the bearing surface (crankshaft side). Do not apply oil to the
back surface (connecting rod and cap side), but thoroughly
clean it.
• When installing, align the connecting rod bearing protrusion
with the notch of the connecting rod to install.
• Check that the oil holes on the connecting rod and on the cor- responding bearing are aligned.
PBIC0260E
To p r i n g ( A ) : —
Second ring (B) : 2AJPBIA0263ZZ
PBIC0808E
PBIC0266E
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CYLINDER BLOCKEM-233
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13. Install the piston and connecting rod assembly into the corre-
sponding cylinder.
• Position the crankshaft pin corresponding to the connecting
rod to be installed onto the bottom dead center.
• Apply engine oil sufficiently to the cylinder bore, piston, and crankshaft pin.
• Match the cylinder position wit h the cylinder No. (B) on the
connecting rod to install.
• Install the piston with the piston front mark (A) on the crown
facing the front of the engine ( ), using a suitable tool.
- Oil hole (C)
CAUTION:
Be careful not to damage the crankshaft pin and cyl inder wall, resulting from an interference of the
connecting rod big end.
14. Install the connecting rod cap. • Match the stamped cylinder number marks on the connectingrod with those on the cylinder cap for installation.
• Install the piston connecting rod assembly and cap so that the front mark on the cap and piston are facing the front of the
engine.
• Lubricate the threads and seat surfaces with new engine
oil.
15. Check the connecting rod cap bolts before reusing, then install
in their original position in the connecting rod. The bolts should
screw in smoothly by hand.
• Measure the outer diameter of the connecting rod cap bolts as
shown.
16. Tighten the connecting rod cap bolts in two stages using Tool: CAUTION:
Always use either an angle wr ench or protractor. Avoid
tightening based on visual check alone.
• Apply engine oil to the threads and seats of the connecting rod cap bolts.
• After tightening the connecting rod cap bolts, make sure that the crankshaft rotates smoothly.
• Check the connecting rod side clearance. If beyond t he limit, replace the connecting rod and/or crank-
shaft.
AWBIA0029ZZ
SEM457G
Outer diameter (d) of th e connecting rod cap bolt
Standard : 7.90 - 8.00 mm (0.3110 - 0.3150 in)
Limit : 7.75 mm (0.3051 in)
SEM538G
Stage 1 : 19.6 N·m (2.0 kg-m, 14 ft-lb)
Stage 2 : 90 ° - 95 ° degrees clockwise
Tool number : KV10112100 (BT-8653-A)
Connecting rod side clearance:
Standard : 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit : 0.40 mm (0.0157 in)
SEM953E
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EM-234
< UNIT DISASSEMBLY AND ASSEMBLY >[VQ35DE]
CYLINDER BLOCK
17. Install the baffle plate to the main bearing beam.
18. Install the knock sensor. • Make sure that there is no foreign material on the cylinder
block mating surface and the bac k surface of the knock sen-
sor.
• Install the knock sensor with the connector facing the rear of
the engine.
• Do not tighten the bolts while holding the connector.
• Make sure that the knock sensor does not interfere with other
parts.
CAUTION:
If any impact by dropping occurs to the knock sensor,
replace it with new one.
19. Install the cylinder head. Refer to EM-207, "Removal and Installation"
.
20. Install the timing chain. Refer to EM-182, "Removal and Installation"
.
21. Install the oil pan. Refer to EM-157, "Removal and Installation (Upper Oil Pan)"
.
22. Remove the engine from the stand and install the engine assembly into the vehicle. Refer to EM-220,
"Removal and Installation".
23. Install the pilot converter with its chamfer facing crankshaft as shown.
24. Install the drive plate. • Install the drive plate and reinforce plate in the direction asshown.
• Align dowel pins of crankshaft rear and drive plate with pin
holes of each part.
• Secure the crankshaft using a suitable tool.
• Tighten the drive plate bolts in one or two steps.
25. Assembly of the remaining parts is in the reverse order of disas- sembly.
26. Fill the engine with the specified oil and coolant. Refer to MA-11,
"FOR USA AND CANADA : Engine Oil Recommendation" and
MA-11, "FOR USA AND CANADA : Fluids and Lubricants"
.
CAUTION:
Wait at least 30 minutes for the sealant to set-up befo re filling the engine with fluids and running it.
InspectionINFOID:0000000009460582
PISTON AND PISTON PIN CLEARANCE
Inner Diameter of Piston Pin Hole
: Crankshaft side
PBIC0810E
JPBIA0210ZZ
PBIC0910E
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CYLINDER BLOCKEM-235
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• Measure the inner diameter of piston pin hole (dp).
Outer Diameter of
Piston Pin
• Measure outer diameter of piston pin (Dp).
• : Engine front
• Piston Grade No. (A)
• Piston front mark (B)
• Oil hole (C)
• Connecting rod front mark (D)
• Cylinder No. (E)
• Pin Grade No. (F)
Piston and Piston Pi n Interference Fit
Standard Interference Fit = (Dp) – (dp)
• If clearance is exceeds specification, replace either or both of piston/piston pin assembly and connecting rod
assembly with reference to specification of each part.
PISTON RING SIDE CLEARANCE
• Measure side clearance of piston ring and piston ring groove with feeler gauge. Standard diameter (dp)
Grade No. 0 : 21.993 – 21.999 mm (0.8659 – 0.8661 in)
Grade No. 1 : 21.999 – 22.005 mm (0.8661 – 0.8663 in)
AEM023
Standard diameter (Dp)
Grade No. 0 : 21.989 – 21.995 mm (0.8657 – 0.8659 in)
Grade No. 1 : 21.995 – 22.001 mm (0.8659 – 0.8662 in)
AEM024
AWBIA0027ZZ
Standard : 0.002 – 0.010 mm (0.0001 – 0.0004 in)
Standard Side Clearance
Top ring : 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring : 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring : 0.045 - 0.125 mm (0.0018 - 0.0049 in)
Maximum Limit
Top ring : 0.11 mm (0.0043 in)
SEM024AA
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EM-238
< UNIT DISASSEMBLY AND ASSEMBLY >[VQ35DE]
CYLINDER BLOCK
• : Engine front
• Piston Grade No. (A)
• Piston front mark (B)
• Oil hole (C)
• Connecting rod front mark (D)
• Cylinder No. (E)
• Pin Grade No. (F)
Service parts apply only to grade 0.
Unit: mm (in)
CYLINDER BLOCK DISTORTION
• Using a scraper, remove any old gasket material on the cylinder block surface, and remove any oil, scale, carbon, or other contami-
nation.
CAUTION:
Be careful not to allow gasket fl akes to enter the oil or coolant
passages.
• Measure the distortion on the block upper face at different points in six directions.
• If out of specification, resurfac e the cylinder block. The allowable
amount of resurfacing is dependent on the amount of any cylinder
head resurfacing. The resurfacing limit is [amount of cylinder head resurfacing] + [amount of cylinder head
resurfacing] = 0.2 mm (0.008 in).
INNER DIAMETER OF MAIN BEARING HOUSING
• Install the main bearing caps with the main bearings removed, and tighten the bolts to the specified torque.
• Using a bore gauge, measure the inner diameter of the main bear-
ing housing (A).
• If out of the standard, replace the cylinder block and main bearing caps as an assembly.
NOTE:
These components cannot be replaced as a single unit, because
they were processed together.
PISTON-TO-CYLINDER BORE CLEARANCE
1. Using a bore gauge, measure cylinder bore for wear, out -of-round and taper at (A), (B) and (C). The X axis
is in the longitudinal direction of the engine.
AWBIA0027ZZ
Grade 0 1
Connecting rod bushing inner diameter
222.000 - 22.006
(0.8661 - 0.8664) 22.006 - 22.012
(0.8664 - 0.8666)
Piston pin outer diameter 21.989 - 21.995
(0.8657 - 0.8659) 21.995 - 22. 001
(0.8659 - 0.8662)
Piston pin hole diameter 21.993 - 21.999
(0.8659 - 0.8661) 21.999 - 22.005
(0.8661 - 0.8663)
Distortion limit : 0.10 mm (0.0039 in)
Cylinder block height : 214.95 - 215.05 mm (8.4626 - 8.4665 in)
SEM123C
Standard : 63.993 - 64.017 mm (2.5194 - 2.5203 in)
SEM845E
Revision: November 20132014 Altima NAM
EXL-4
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951582
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 the system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 NISS AN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 minutes before performing any service.
General precautions fo r service operationsINFOID:0000000009463538
• Do not work with wet hands.
• The xenon headlamp system includes a high voltage generating
part. Be sure to disconnect batte ry negative cable (negative termi-
nal) or power fuse before removing, installing, or touching the
xenon headlamp (including lamp bulb).
• Turn the lighting switch OFF before disconnecting and connecting the connector.
• When turning the xenon headlamp on and while it is illuminated, do
not touch the harness, bulb, and socket of the headlamp.
• When checking the headlamp on/off operation, check it on vehicle and with the power connected to the vehicle-side connector.
• Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not touch the headl amp bulb just after the headlamp is turned off, because
it is very hot.
• Install the xenon headlamp bulb socket co rrectly. If it is installed improperly, high-voltage leak or corona dis-
charge may occur that can melt the bulb, connector or housing. Do not illuminate the xenon headlamp bulb
out of the headlamp housing. Doing so can cause fire and harm your eyes.
• When the bulb has burned out, wrap it in a thick vinyl bag and discard. Do not break the bulb.
• Leaving the bulb removed from the headlamp housing for a long period of time can deteriorate the perfor- mance of the lens and reflector (dirt, clouding). Al ways prepare a new bulb and have it on hand when replac-
ing the bulb.
• When adjusting the headlamp aiming, turn the aiming adjus tment screw only in the tightening direction. If it
is necessary to loosen the screw, first fully loosen the screw, and then turn it in the tightening direction.
• Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
PKIA0183E
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EXL-10
< SYSTEM DESCRIPTION >
SYSTEM
HIGH BEAM OPERATION/FLASH-TO-PASS OPERATION
With the lighting switch in the 2nd position and placed in HIGH position, the BCM receives input requesting the
headlamp high beams to illuminate. The flash to pass f eature can be used any time and also sends a signal to
the BCM. This input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the
combination meter controls the ON/OFF status off the HIGH BEAM indicator. The CPU of the IPDM E/R con-
trols the headlamp high relay coil which supplies power to the high beam headlamps.
The combination meter receives a high beam request signal (ON) through the CAN communication lines and
turns the high beam indicator lamp ON.
EXTERIOR LAMP BATTERY SAVER CONTROL
With the combination switch (lighting and turn signal switch) in the 2nd position and the ignition switch is
turned from ON or ACC to OFF, the battery saver feature is activated.
Under this condition, the headlamps remain illuminated fo r a period of time, unless the lighting switch position
is changed. If the lighting switch position is changed, then the headlamps are turned off.
AUTO LIGHT SYSTEM
AUTO LIGHT SYSTEM : System DiagramINFOID:0000000009463545
AUTO LIGHT SYSTEM : System DescriptionINFOID:0000000009463546
• BCM (Body Control Module) controls auto light operati on according to signals from optical sensor, lighting
switch and ignition switch.
• IPDM E/R (Intelligent Power Distribution Module Engine R oom) operates parking, license plate, tail, front fog
lamps and headlamps according to CAN communication signals from BCM.
• Optical sensor detects ambient brightness of 800 to 2,500 lux. And optical sensor converts light (lux) to volt-
age, then sends the optical sensor signal to BCM.
OUTLINE
The auto light control system has an optical sensor that detects outside brightness.
When the lighting switch is in AUTO position, it autom atically turns ON/OFF the parking, license plate, tail,
front fog lamps and headlamps in accordance with the am bient light. Sensitivity can be adjusted. For the
details of the setting, Refer to BCS-19, "HEADLAMP : CONSULT Function (BCM - HEADLAMP)"
.
DAYTIME RUNNING LIGHT SYSTEM
AWLIA1981GB
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SYSTEMEXL-11
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DAYTIME RUNNING LIGHT SY STEM : System DiagramINFOID:0000000009463547
DAYTIME RUNNING LIGHT SYST EM : System DescriptionINFOID:0000000009463548
System Description
The daytime light system is equipped with a daytime light control that activates the daytime lights within the
front fog lamp assembly when the engine is operating. If the parking brake is applied, the daytime lights will
turn OFF. The daytime lights will turn ON when the parking brake is released.
OPERATION
The BCM monitors inputs from the parking brake swit ch and the combination switch (lighting and turn signal
switch) to determine when to operate the daytime light s ystem. The BCM sends a daytime light request to the
IPDM E/R via the CAN communication lines. The IPDM E/ R grounds the daytime light relay which in turn, pro-
vides power to the daytime lights.
FRONT FOG LAMP SYSTEM
FRONT FOG LAMP SYSTEM : System DiagramINFOID:0000000009463549
FRONT FOG LAMP SYSTEM : System DescriptionINFOID:0000000009463550
The front fog lamps are activated with the combination switch (lighting and turn signal switch). The lighting
switch signal to the BCM is monitored with the BCM combination switch reading function. When the fog lamps
are turned ON with the lighting switch, the BCM sends a front fog lamp request signal via CAN communication
lines to the IPDM E/R. The IPDM E/R grounds the front fog lamp relay coil to activate the front fog lamps.
FRONT FOG LAMP OPERATION
When the lighting switch is in front fog lamp ON position and also in 1st or 2nd position or AUTO position
(headlamp is ON), the BCM detects FR FOG ON and the HEAD LAMP 1, 2 ON or the AUTO LIGHT ON. The
BCM sends a front fog lamp request ON signal via the CAN communication lines to the IPDM E/R. The IPDM
E/R then turns ON the front fog lamp re lay sending power to the front fog lamps.
TURN SIGNAL AND HAZARD WARNING LAMPS
AWLIA1965GB
AWLIA1719GB
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