stop start INFINITI QX4 2005 Factory Owners Manual

OIL PAN AND OIL STRAINER
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Revision: October 20052005 QX56
b. Tighten the oil pan (lower) bolts in numerical order as shown.
4. Install the oil pan drain plug.
5. Installation of the remaining components is in the reverse order of removal.

Do not fill the engine oil for at least 30 minutes after oil pan is installed.
INSPECTION AFTER INSTALLATION
1. Check engine oil level and add engine oil if necessary. Refer to LU-7, "OIL LEVEL" .
2. Start the engine, and check for leaks of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check engine oil level again.
PBIC2595E

EM-32Revision: October 2005
FUEL INJECTOR AND FUEL TUBE
2005 QX56

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of foreign material.

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.

Insert new O-ring straight into fuel tube. Do not twist it.
6. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
After installing the fuel tubes, make sure there are no fuel leaks at the connections using the following steps.
1. Apply fuel pressure to the fuel lines by turning ignition switch ON (with engine stopped). Then check for
fuel leaks at the connections.
NOTE:
Use mirrors for checking on hidden points.
2. Start the engine and rev it up and check for fuel leaks at the connections.
CAUTION:
Do not touch the engine immediately after stopping, as engine becomes extremely hot.

EM-38Revision: October 2005
TIMING CHAIN
2005 QX56
9. Remove the oil pump. Refer to LU-13, "Removal and Installation" .
10. Remove the chain tensioner on the left bank using the following steps.
NOTE:
To remove the timing chain and associated parts, start with those on the left bank. The procedure for
removing parts on the right bank is omitted because it is the same as that for the left bank.
a. Squeeze the return-proof clip ends using suitable tool and push
the plunger into the tensioner body.
b. Secure the plunger using stopper pin.

Stopper pin is made from hard wire approximately 1 mm (0.04
in) in diameter.
c. Remove the bolts and chain tensioner.
WAR NIN G:
Plunger, spring, and spring seat pop out when (squeezing)
return-proof clip without holding plunger head. It may
cause serious injuries. Always hold plunger head when
removing.
NOTE:

Stop the plunger in the fully extended position by using the
return-proof clip 1 if the stopper pin is removed.

Push the plunger 2 into the tensioner body while squeezing
the return-proof clip 1. Secure it using stopper pin 3.
11. Remove the chain tension guide and slack guide.
12. Remove the timing chain and crankshaft sprocket.
13. Loosen the camshaft sprocket bolts as shown and remove the
camshaft sprocket.
CAUTION:
To avoid interference between valves and pistons, do not
turn crankshaft or camshaft when timing chain is discon-
nected.
14. Repeat the same procedure to remove the right timing chain and
associated parts.
INSPECTION AFTER REMOVAL
Check for cracks and any excessive wear at link plates. Replace
chain if necessary.

In the same way as for the left bank, inspect the timing chain
and associated parts on the right bank.
KBIA2479E
KBIA2483E
KBIA2513E
PBIC0282E

CAMSHAFT
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Revision: October 20052005 QX56
5. Install the camshaft sprockets using the following procedure:
a. Install the camshaft sprockets aligning them with the matching
marks painted on the timing chain when removed. Align the
camshaft sprocket key groove with the dowel pin on the cam-
shaft front edge at the same time. Then temporarily tighten
bolts.

Install the intake and exhaust side camshaft sprockets by
selectively using the groove of the dowel pin according to the
bank. (Common part used for both banks.)
b. Lock the hexagonal part of the camshaft in the same way as for
removal, and tighten the bolts.
c. Check again that the timing mating mark on the timing chain and
on each sprocket are aligned.
6. Install the chain tensioner using the following procedure:
NOTE:
Left bank is shown.
a. Install the chain tensioner.

Compress the plunger and hold it using a stopper pin when
installing.

Loosen the slack guide side timing chain by rotating the cam-
shaft hexagonal part if mounting space is small.
b. Remove the stopper pin and release the plunger, and then apply
tension to the timing chain.
c. Install the chain tensioner cover onto the front cover (RH bank).

Apply liquid gasket as shown.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-45, "
Recommended Chemical Products and Sealants"
.
7. Check and adjust valve clearances. Refer to EM-51, "
Va l v e
Clearance" .
8. Installation of the remaining components is in the reverse order
of removal.
Valv e C le aranceEBS00LMA
INSPECTION
NOTE:
Perform the following inspection after removal, installation or replacement of camshaft or valve-related parts,
or if there are unusual engine conditions due to changes in valve clearance over time (starting, idling, and/or
noise).
1. Warm up the engine. Then stop the engine.
2. Remove the engine cover, battery cover and air duct assembly. Refer to EM-11, "
Removal and Installa-
tion" , SC-9, "REMOVAL" and EM-14, "Removal and Installation" .
KBIA2482E
KBIA2480E
Chain tensioner bolts : 6.9 N·m (0.70 kg-m, 61 in-lb)
Tensioner cover bolts : 9.0 N·m (0.92 kg-m, 80 in-lb)KBIA2479E
KBIA2547E

EM-58Revision: October 2005
CYLINDER HEAD
2005 QX56
CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00LME
CHECKING COMPRESSION PRESSURE
1. Warm up the engine thoroughly. Then stop the engine.
2. Release the fuel pressure. Refer to EC-93, "
FUEL PRESSURE RELEASE" .
CAUTION:
Leave the fuel pump fuse disconnected until step 7.
3. Remove the spark plug from each cylinder. Refer to EM-27, "
REMOVAL" .
4. Connect the engine tachometer (not required in use of CONSULT-II).
5. Install the compression tester with Tool into the spark plug hole.
6. With the accelerator pedal fully depressed, turn the ignition
switch to “START” for cranking. When the gauge pointer stabi-
lizes, read the compression pressure and engine rpm. Perform
these steps to check each cylinder.
Unit: kPa (kg/cm2 , psi) /rpm
CAUTION:
Always use a fully charged battery to obtain specified engine speed.

If the engine speed is out of the specified range, check the battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.

If the compression pressure is below the minimum value, check the valve clearances and parts associ-
ated with the combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head,
cylinder head gasket). After checking, measure the compression pressure again.

If some cylinders have low compression pressure, pour a small amount of engine oil into the spark plug
hole of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, the piston rings may be worn out or damaged. Check
the piston rings and replace if necessary.
–If the compression pressure remains at a low level despite the addition of engine oil, the valves may be
malfunctioning. Check the valves for damage. Replace the valve or valve seat accordingly.

If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, the gaskets may be leaking, or a valve in adjacent cylinders
may be damaged. Inspect and repair as required.
7. Install the components in the reverse order of removal.
8. Start the engine and confirm that it runs smoothly.
9. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-95, "
TROUBLE DIAGNOSIS" . Tool number : EG15050500 (J-45402)
Standard MinimumDeference limit
between cylinders
1,520 (15.5, 220) / 200 1,324 (13.5, 192) / 200 98 (1.0, 14) / 200
WBIA0605E

EM-72Revision: October 2005
ENGINE ASSEMBLY
2005 QX56
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:

When replacing an engine or transmission you must make sure the dowels are installed correctly
during re-assembly.

Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of driv-
etrain components.
INSPECTION AFTER INSTALLATION

Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are
lower than required quantity, fill to the specified level. Refer to MA-11, "
RECOMMENDED FLUIDS AND
LUBRICANTS" .

Use procedure below to check for fuel leakage.

Turn ignition switch ON (with engine stopped). With fuel pressure applied to the fuel piping, check for fuel
leakage at the connection points.

Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids includ-
ing engine oil and engine coolant.

Bleed air from passages in lines and hoses, such as in cooling system.

After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to
specified level if necessary.

Summary of the inspection items:
*Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gas — Leakage —

FL-4Revision: October 2005
FUEL SYSTEM
2005 QX56

After connecting the fuel tube quick connectors, make sure
the quick connectors are secure.
Ensure that the connector and resin tube do not contact
any adjacent parts.

After installing tubes, make sure there is no fuel leakage at
connections in the following steps.
–Apply fuel pressure to fuel lines with turning ignition switch
ON (with engine stopped). Then check for fuel leaks at con-
nections.
–Start the engine and rev it up and check for fuel leaks at
connections.

Use only a Genuine NISSAN fuel filler cap as a replacement.
If an incorrect fuel filler cap is used, the MIL may come on.

For servicing “Evaporative Emission System” parts, refer to
EC-32, "
EVAPORATIVE EMISSION SYSTEM" .

For servicing “On Board Refueling Vapor Recovery
(ORVR)” parts, refer to EC-39, "
ON BOARD REFUELING
VAPOR RECOVERY (ORVR)" .
PBIC1268E

SQUEAK AND RATTLE TROUBLE DIAGNOSES
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Revision: October 20052005 QX56
80845-71L00: 30 mm (1.18 in) thick, 30×50 mm (1.18×1.97 in)
FELT CLOTH TAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15×25 mm (0.59×0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll. The following mate-
rials not found in the kit can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used instead of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingEIS004TO
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the areas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-43980) to repair the noise.

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ALPHABETICAL INDEX
Rear bumper ....................................................... EI-15
Rear case (Transfer) .......................... TF-146, TF-179
Rear combination lamp removal and installation ... LT-
122
Rear cover packing replacement diff. .............. RFD-24
Rear door ........................................... BL-128, GW-71
Rear seat ......................................................... SE-104
Rear seat belt ...................................................... SB-6
Rear suspension ............................................. RSU-25
Rear view monitor ............................................... DI-71
Rear washer .................................................... WW-35
Rear window defogger ..................................... GW-77
Rear wiper ....................................................... WW-35
Refrigerant connection precaution .................... ATC-7
Refrigerant discharging evacuating charging ATC-175
Refrigerant general precaution .......................... ATC-6
Refrigerant lines ........... ATC-175, ATC-183, ATC-184
Refrigerant pressure sensor ............ EC-643, ATC-185
Relay box .......................................................... PG-78
Remote keyless entry system ............................ BL-44
Removal and installation (A/T) ........... AT-244, AT-247
Removal and installation (Transfer) ................. TF-143
Revolution sensor (A/T) ................................... AT-108
Ring gear diff. inspection ................................. RFD-13
Road wheel size ................................................. GI-49
Rocker cover ..................................................... EM-33
Room lamp ....................................................... LT-129
Room lamp - See Interior lamp ........................ LT-129
ROOM/L - Wiring diagram ................................ LT-135
RP/SEN - Wiring diagram ............................... EC-644
S
SAE J1979 - Service $01 - 09 ........................... EC-48
Seat belt inspection ............................... SB-10, MA-32
Seat belt pre-tensioner .................................... SRS-58
Seat belt, front ..................................................... SB-3
Seat belt, rear ...................................................... SB-6
Seat, front .......................................................... SE-97
Seat, rear ........................................................ SE-104
Self-diagnosis (Transfer) .................................... TF-50
SEN/PW - Wiring diagram ............................... EC-455
SHIFT - Wiring diagram ................................... AT-223
Shift control (Transfer) ....................... TF-147, TF-174
Shift lock system .............................................. AT-222
Shock absorber (front) .................................... FSU-10
Shock absorber (rear) ..................................... RSU-34
Side air bag (satellite) sensor .......................... SRS-57
Side bearing preload diff. ................................ RFD-19
Side curtain air bag ......................................... SRS-54
Side trim .............................................................. EI-35
SMJ (super multiple junction) ............................ PG-74
SONAR - Wiring diagram .................................... DI-61
Spare tire size .................................................... GI-49
Spark plug ......................................................... EM-27
Spark plug replacement .................................... MA-18
Specification value .......................................... EC-146
Speedometer ......................................................... DI-5
Spiral cable ..................................................... SRS-48
SROOF - Wiring diagram .................................. RF-13
SRS - See Supplemental Restraint System ...... SRS-5
SRS - Wiring diagram ...................................... SRS-12
SRS Trouble diagnoses ..................................... SRS-8
Stabilizer bar (front) ......................................... FSU-12
Stabilizer bar (rear) ......................................... RSU-41
Stall test (A/T) .................................................... AT-50
Standardized relay ............................................. PG-72
START - Wiring diagram ................................... SC-11
Starting system .................................................. SC-10
Steering gear, linkage and transfer gear inspection .....
MA-29
Steering linkage ................................................. PS-15
Steering wheel and column ................................. PS-7
Step lamp ......................................................... LT-130
Stop lamp ......................................................... LT-103
Stop lamp switch ................. EC-569, EC-586, EC-657
STOP/L - Wiring diagram ................................. LT-104
Strut (front) ...................................................... FSU-10
Sub-oil pump (Transfer) ...................... TF-152, TF-165
Sun gear (Transfer) ............................ TF-147, TF-174
Sun roof, electric ................................................ RF-10
Sunload sensor .............................................. ATC-143
Sunroof .............................................................. RF-23
Supplemental Restraint System ........................ SRS-5
Supplemental restraint system - Wiring diagram . SRS-
12
Symbols and abbreviations ..................... GI-10, GI-22
Symptom matrix chart ...................................... EC-104
System readiness test (SRT) code .................... EC-54
T
Tachometer .......................................................... DI-5
Tail lamp ........................................................... LT-108
TAIL/L - Wiring diagram .................................... LT-110
TCM circuit diagram .......................................... AT-49
TCM inspection table ......................................... AT-82
TCS - Wiring diagram ..................................... BRC-16
TCS (traction control system) ........................... BRC-7
TCS component parts and connector location BRC-14
TCS wheel sensors ........................................ BRC-14
Theft warning system - See Vehicle security (Theft warn-
ing) system ......................................................... BL-75
Thermometer ...................................................... DI-26
Three way catalyst ............................................. EM-19
Three way catalyst function (Bank 1) .............. EC-298
Three way catalyst function (Bank 2) .............. EC-298
Three way catalyst precautions ............................ GI-5
Throttle control motor ...................................... EC-410
Throttle control motor relay .............................. EC-405
Throttle position sensor (TPS) ... EC-201, EC-264, EC-
450, EC-452, EC-604
Throttle valve closed position learning .............. EC-90
Tie-rod ............................................................... PS-15
Timing chain ...................................................... EM-35
Tire rotation ....................................................... MA-28
Tire size .............................................................. GI-49
Tooth contact diff. ............................................ RFD-20

IP-6
SQUEAK AND RATTLE TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
73982-9E000: 45 mm (1.77 in) thick, 50 x 50 mm (1.97 x 1.97 in)/73982-50Y00: 10 mm (0.39 in) thick, 50 x 50
mm (1.97 x 1.97 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 x 50 mm (1.18 x 1.97 in)
FELT CLOTH TAPE
Used to insulate where movement does not occur. Ideal for instrument panel applications.
68370-4B000: 15 x 25 mm (0.59 x 0.98 in) pad/68239-13E00: 5 mm (0.20 in) wide tape roll
The following materials, not found in the kit, can also be used to repair squeaks and rattles.
UHMW (TEFLON) TAPE
Insulates where slight movement is present. Ideal for instrument panel applications.
SILICONE GREASE
Used in place of UHMW tape that will be visible or not fit.
Note: Will only last a few months.
SILICONE SPRAY
Use when grease cannot be applied.
DUCT TAPE
Use to eliminate movement.
CONFIRM THE REPAIR
Confirm that the cause of a noise is repaired by test driving the vehicle. Operate the vehicle under the same
conditions as when the noise originally occurred. Refer to the notes on the Diagnostic Worksheet.
Generic Squeak and Rattle TroubleshootingEIS0062R
Refer to Table of Contents for specific component removal and installation information.
INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. The cluster lid A and instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar garnish
4. Instrument panel to windshield
5. Instrument panel mounting pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noise. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or rattle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shifter assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation procedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops