Page 2993 of 5598

PRECAUTIONSGI-29
< PRECAUTION >
C
DE
F
G H
I
J
K L
M B
GI
N
O P
Before servicing the vehicle: Protect fenders, upholstery and carpeting with appropriate covers.
Take caution that keys, buckles or buttons do not scratch paint.
WARNING:
To prevent ECM from storing the diagnostic trou ble codes, never carelessly disconnect the harness
connectors which are related to the engine cont rol system and TCM (transmission control module)
system. The connectors should be disconnected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and TM sections.
Three Way CatalystINFOID:0000000006280871
If a large amount of unburned fuel flows into the catalyst , the catalyst temperature will be excessively high. To
prevent this, follow the instructions.
Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.
When checking for ignition spark or measuring engine compression, make tests quickly and only when nec- essary.
Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to the
catalyst.
Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three
way catalyst.
Multiport Fuel Inje ction System or Engine Control SystemINFOID:0000000006280872
Before connecting or disconnecti ng any harness connector for the
multiport fuel injection system or ECM:
Turn ignition switch to “OFF” position.
Disconnect negative battery terminal.
Otherwise, there may be damage to ECM.
Before disconnecting pressurized fuel line from fuel pump to injec- tors, be sure to release fuel pressure.
Be careful not to jar components such as ECM and mass air flow sensor.
HosesINFOID:0000000006280873
HOSE REMOVAL AND INSTALLATION
To prevent damage to rubber hose, do not pry off rubber hose withtapered tool or screwdriver.
SGI234
SGI787
SMA019D
Revision: 2010 May2011 QX56
Page 2994 of 5598

GI-30
< PRECAUTION >
PRECAUTIONS
To reinstall the rubber hose securely, check that hose insertionlength and orientation is correct. (If tube is equipped with hose
stopper, insert rubber hose into tube until it butts up against hose
stopper.)
HOSE CLAMPING
If old rubber hose is re-used, install hose clamp in its original posi-tion (at the indentation where the old clamp was). If there is a trace
of tube bulging left on the old rubber hose, align rubber hose at
that position.
Discard old clamps; replace with new ones.
After installing plate clamps, apply force to them in the direction of the arrow, tightening rubber hose equally all around.
Engine OilsINFOID:0000000006280874
Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact
with used oil.
If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
HEALTH PROTECTION PRECAUTIONS
Avoid prolonged and repeated contact with oils, particularly used engine oils.
Wear protective clothing, including impervious gloves where practicable.
Do not put oily rags in pockets.
Avoid contaminating clothes, pa rticularly underpants, with oil.
Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu-
larly.
First aid treatment should be obtained immediately for open cuts and wounds.
Use barrier creams, applying them before each work period, to help the removal of oil from the skin.
Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepara-
tions containing lanolin replace the natural skin oils which have been removed.
Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin.
If skin disorders develop, obtain medical advice without delay.
Where practical, degrease components prior to handling.
Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face
shields; in addition an eye wash facility should be provided.
ENVIRONMENTAL PROTECTION PRECAUTIONS
SMA020D
SMA021D
SMA022D
Revision: 2010 May2011 QX56
Page 2995 of 5598

PRECAUTIONSGI-31
< PRECAUTION >
C
DE
F
G H
I
J
K L
M B
GI
N
O P
Dispose of used oil and used oil filters through authorized waste disposal contractors to licensed waste dis-
posal sites, or to the waste oil reclamation trade. If in doubt, contact the local authority for advice on disposal
facilities.
It is illegal to pour used oil on to the ground, dow n sewers or drains, or into water sources.
The regulations concerning po llution vary between regions.
Air ConditioningINFOID:0000000006280875
Use an approved refrigerant recovery unit any time t he air conditioning system must be discharged. Refer to
HA section “REFRIGERANT” fo r specific instructions.
FuelINFOID:0000000006280876
INFINITI recommends the use of unleaded premium gasoli ne with an octane rating of at least 91 AKI (Anti-
Knock Index) number (Research octane number 96).
If unleaded premium gasoline is not available, unleaded r egular gasoline with an octane rating of at least 87
AKI number (Research octane number 91), can be used. In such case, engine performance may be decrease.
CAUTION:
Using a fuel other than that specified could ad versely affect the emission control system, and may
also affect warranty coverage.
Under no circumstances should a leaded gasoline be used, because this will damage the three-way
catalyst.
Do not use E-85 fuel in the vehicle . The vehicle is not designed to run on E-85 fuel. Using E-85 fuel
can damage the fuel system components and is not covered by the INFINITI vehicle limited warranty.
Revision: 2010 May2011 QX56
Page 2996 of 5598
GI-32
< PRECAUTION >
LIFTING POINT
LIFTING POINT
Pantograph JackINFOID:0000000006280877
WARNING:
Never get under the vehicle while it is supported only by the jack. Always use safety stands to sup-
port the frame when you have to get under the vehicle.
Place wheel chocks at both front an d back of the wheels on the ground.
Garage Jack and Safety StandINFOID:0000000006280878
CAUTION:
Place a wooden or rubber block between safety stan d and vehicle body when the supporting body is
flat.
Remove engine under cover before jacking up the front side of the vehicle with garage jack. Refer to
BRM-39, "
Rear Fender".
JMAIA0247ZZ
Revision: 2010 May2011 QX56
Page 2997 of 5598
LIFTING POINTGI-33
< PRECAUTION >
C
DE
F
G H
I
J
K L
M B
GI
N
O P
2-Pole LiftINFOID:0000000006280879
WARNING:
When lifting the vehicle, open the lift arms as wide as possible and ensure that the front and rear of
the vehicle are well balanced.
When setting the lift arm, never allow the arm to contact the brake tubes, brake cable, or fuel lines.
A : Garage jack point
B : Safety stand point
: Vehicle front
JMAIA0252ZZ
: Vehicle front
JMAIA0253ZZ
Revision: 2010 May2011 QX56
Page 2998 of 5598

GI-34
< PRECAUTION >
TOW TRUCK TOWING
TOW TRUCK TOWING
Tow Truck TowingINFOID:0000000006280880
CAUTION:
All applicable local laws regarding the towing operation must be obeyed.
It is necessary to use proper towi ng equipment to avoid possible damage to the vehicle during tow-
ing operation. To wing is in accordance with Towing Procedure Manual at dealer.
Always attach safety chains before towing.
When towing, check that the transmission, steering syst em and powertrain are in good order. If any
unit is damaged, dollies must be used.
Never tow automatic transmission model from the rear (that is backward) with four wheels on the
ground. This may cause serious and exp ensive damage to the transmission.
4WD MODELS
NISSAN recommends that a dolly be used as illustrated when towing 4WD models.
CAUTION:
Never tow 4WD models with any of the wheels on the ground as this may cause serious and expensive
damage to the powertrain.
Vehicle Recovery (Freeing a Stuck Vehicle)INFOID:0000000006280881
FREEING TRAPPED VEHICLE
WARNING:
Stand clear of a stuck vehicle.
Never allow anyone to stand near the towing line during the pulling operation.
Never spin your tires at high sp eed. This could cause them to explode and result in serious injury.
Parts of your vehicle could also overheat and be damaged.
CAUTION:
Tow chains or cables must be attached only to the vehicle recovery hooks or main structural mem-
bers of the vehicle. Otherwise, the vehicle body will be damaged.
Never use the vehicle tie downs to free a vehicle st uck in sand, snow, mud, etc. Never tow the vehi-
cle using the vehicle tie downs or recovery hooks.
Always pull the cable straight out from the front of the vehicle. Never pull on the hook at an angle.
JMAIA0248ZZ
Revision: 2010 May2011 QX56
Page 2999 of 5598

TOW TRUCK TOWINGGI-35
< PRECAUTION >
C
DE
F
G H
I
J
K L
M B
GI
N
O P
Pulling devices should be routed so they do not touch any part of the suspension, steering, brake or
cooling systems.
Pulling devices such as ropes or canvas straps ar e not recommended for use in vehicle towing or
recovery.
In order to not break the towi ng line, tension it slowly.
FRONT
REAR
AUTOMATIC TRANSMISSION
To tow a vehicle equipped with an automatic tr ansmission, an appropriate vehicle dolly MUST be placed under
the towed vehicle's drive wheels. Always follow the dolly manufacture's recommendations when using their
product.
If the vehicle is stuck in sand, snow , mud, etc., use the following procedure:
1. Turn off the Vehicle Dynam ic Control System. (if equipped)
2. Check the area in front and behind the vehicle is clear of obstructions.
3. Turn the steering wheel right and left to clear an area around the front tires.
4. Slowly rock the vehicle forward and backward. Shift back and forth between R (reverse) and D (drive).
Apply the accelerator as little as possible to maintain the rocking motion.
Release the accelerator pedal before shifting between R and D.
Do not spin the tires above 35 mph. (55 km/h).
5. If the vehicle can not be freed after a few tries, cont act a professional towing service to remove the vehi-
cle.
JMAIA0254ZZ
JMAIA0255ZZ
Revision: 2010 May2011 QX56
Page 3000 of 5598

GI-36
< BASIC INSPECTION >
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
BASIC INSPECTION
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Work FlowINFOID:0000000006280851
WORK FLOW
Control Units and Electrical PartsINFOID:0000000006280852
PRECAUTIONS
Never reverse polarity of battery terminals.
Install only parts specified for a vehicle.
Before replacing the control unit, check the i nput and output and functions of the component parts.
Do not apply excessive force when disconnecting a connector.
SGI838
STEP DESCRIPTION
STEP 1 Get detailed information about the conditions and the environment when the incident occurred.
The following are key pieces of information required to make a good analysis:
WHAT
Vehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio).
WHEN Date, Time of Day, Weather Conditions, Frequency.
WHERE Road Conditions, Altitude and Traffic Situation.
HOW System Symptoms, Operating Conditions
(Other Components Interaction).
Service History and if any After Market Accessories have been installed.
STEP 2 Operate the system, road test if necessary.
Verify the parameter of the incident.
If the problem cannot be duplicated, refer to “Incident Simulation Tests”.
STEP 3 Get the proper diagnosis materials together including:
Power Supply Routing
System Operation Descriptions
Applicable Service Manual Sections
Check for any Service Bulletins
Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments.
STEP 4 Inspect the system for mechanical binding, loose connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness Lay-
outs.
STEP 5 Repair or replace the incident circuit or component.
STEP 6 Operate the system in all modes. Verify the system works properly under all conditions. check you have not inadvertently
created a new incident during your diagnosis or repair steps.
Revision: 2010 May2011 QX56