warning INFINITI QX56 2008 Factory Service Manual

MA-6
< ON-VEHICLE MAINTENANCE >
GENERAL MAINTENANCE
ON-VEHICLE MAINTENANCE
GENERAL MAINTENANCE
General MaintenanceINFOID:0000000001606163
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owner can perform these
checks and inspections or have thei r INFINITI dealers perform them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed fr om time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle,
etc.
Item Reference page
Tires Check the pressure with a gauge at least once a month and always prior to a
long distance trip. Adjust to the specified pressure if necessary. Check carefully
for damage, cuts or excessive wear. —
Wheel lug nuts When checking the tires, make sure no nuts are missing, and check for any loose
nuts. Tighten if necessary. WT-48, "
Rotation"
Windshield
Clean the windshield on a regular basis. Check the windshield at least every six
months for cracks or other damage. Repair as necessary. —
Tire rotation Tires should be rotated every 12,000 km (7,500 miles). WT-48, "
Rotation"
Transmitter compo-
nents in tire pressure
monitoring system
(TPMS)Replace grommet seat, valve core and cap of the transmitter on TPMS every tire
replacement by reaching wear limit of tire.
WT-49, "
Transmitter
(Pressure Sensor)"
Wheel alignment and
balanceIf the vehicle pulls to either side while driving on a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a need for wheel align-
ment. If the steering wheel or seat vibrates at normal highway speeds, wheel bal-
ancing may be needed. WT-46, "Adjustment",
FSU-7, "
Front Wheel
Alignment"
Windshield wiper
blades Check for cracks or wear if they do not wipe properly.
—
Doors and engine
hood Check that all doors and the engine hood operate smoothly as well as the back
hatch. Also make sure that all latches lock securely. Lubricate if necessary. Make
sure that the secondary latch keeps the hood from opening when the primary
latch is released.
When driving in areas using road salt or other corrosive materials, check lubri-
cation frequently. MA-33, "
Lubricating
Locks, Hinges and Hood
Latches"
Lamps
Make sure that the head lamps, stop lamps, tail lamps, turn signal lamps, and
other lamps are all operating properly and installed securely. Also check head
lamp aim. Clean the head lamps on a regular basis. EXL-110, "HEADLAMP :
Aiming Adjustment"
Item
Reference page
Warning lamps and
buzzers/chimes Make sure that all warning lamps and buzzers/chimes are operating properly.
WCS-4, "
WARNING
CHIME SYSTEM : Sys-
tem Description"
Windshield wiper and
washerCheck that the wipers and washer operate properly and that the wipers do not
streak.
—
Windshield defroster Check that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioner. —
Steering wheel Check that it has the specified play. Be sure to check for changes in the steering
condition, such as excessive play, hard steering or strange noises. ST-15, "
On-Vehicle In-
spection and Service"
Seats
Check seat position controls such as seat adjusters, seat back recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every po-
sition. Check that the head restraints move up and down smoothly and that the
locks (if equipped) hold securely in all latched positions. Check that the latches
lock securely for folding-down rear seat backs. —
Revision: March 2010
2008 QX56

MA-14
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE
ENGINE MAINTENANCE
Checking Drive BeltsINFOID:0000000001606170
WARNING:
Be sure to perform when the engine is stopped.
1. Remove air duct and resonator assembly (inlet) when inspecting drive belt.
2. Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range“A” (between three line notches) as shown.
NOTE:
• Check the auto tensioner indication when the engine is cold.
• When the new drive belt is installed, the range should be “A” as shown.
• The indicator notch is located on the moving side of the auto tensioner.
3. Visually check entire belt for wear, damage or cracks.
4. If the indicator is out of allowable working range or belt is damaged, replace the belt. Refer to EM-13,
"Removal and Installation".
DRIVE BELT TENSION
There is no manual drive belt tension adjustment. The driv e belt tension is automatically adjusted by the auto
tensioner.
Changing Engine CoolantINFOID:0000000001606171
WARNING:
• To avoid being scalded, never change the coolant when the engine is hot.
• Wrap a thick cloth around the cap to carefully remove the cap. First, turn the cap a quarter of a turn
to release any built-up pressure, th en push down and turn the cap all the way to remove it.
DRAINING ENGINE COOLANT
1. Turn ignition switch ON and set temperature control lever all the way to HOT position or the highest tem-
perature position. Wait 10 seconds and turn ignition switch OFF.
2. Remove the engine front undercover using power tool.
1. Drive belt 2. Power steering oil pump pulley 3. Generator pulley
4. Crankshaft pulley 5. A/C compressor6. Idler pulley
7. Cooling fan pulley 8. Water pump pulley 9. Drive belt tensioner
LBIA0391E
Revision: March 2010 2008 QX56

ENGINE MAINTENANCEMA-17
< ON-VEHICLE MAINTENANCE >
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2. Fill the radiator and the reservoir tank (to the “MAX”
line), with water. Reinstall the radiator cap and leave
the vented reservoir cap off.
3. Run the engine until it reaches normal operating temperature.
4. Press the engine accelerator two or three times under no-load.
5. Stop the engine and wait until it cools down.
6. Drain the water from the engine cooling system. Refer to CO-11, "
Changing Engine Coolant" .
7. Repeat steps 2 through 6 until clear water begins to drain from the radiator.
Checking Fuel LineINFOID:0000000001606172
Inspect the fuel lines and fuel tank for improper mounting, leaks,
cracks, damage, loose connections, chafing, or deterioration.
As necessary, repair or replace any faulty parts.
Changing Fuel FilterINFOID:0000000001606173
The fuel filter is part of the fuel level sensor unit, fuel filter and fuel pump assembly. Refer to FL-7, "Removal
and Installation" .
WARNING:
Before replacing the fuel filter, release the fuel pressure from the fuel system. Refer to EC-494, "
Fuel
Pressure Check".
Changing Engine Air Cleaner FilterINFOID:0000000001606174
VISCOUS PAPER TYPE
NOTE:
• The viscous paper type filter does not need cleaning between replacement intervals.
• Replace the air filter as necessary for required maintenance.
1. Remove the air duct and resonator assembly.
SMA803A
1. Air cleaner case (upper) 2. Air cleaner filter3. Air cleaner case (lower)
4. Air duct and resonator assembly
WBIA0465E
Revision: March 2010 2008 QX56

MA-18
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE
2. Disconnect the harness connector, then remove the air cleaner case (upper).
3. Remove the air cleaner filter from the air cleaner case (lower).
4. Install the new air cleaner filter in the air cleaner case (lower).
5. Install the air cleaner case (upper) and connect the harness connector.
6. Install the air duct and resonator assembly.
Changing Engine OilINFOID:0000000001606175
WARNING:
• Be careful not to burn yourself, as the engine and engine oil are hot.
• 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.
1. Warm up the engine, and check for any oil leaks.
2. Stop the engine and wait for at least 10 minutes.
3. Remove the oil drain plug and oil filler cap to drain the old oil.
4. Install a new washer on the oil drain plug, then install the oil drain plug in the oil pan.
CAUTION:
Clean the drain plug and install with a new washer.
5. Refill the engine with new specified engine oil.
CAUTION:
The refill capacity depends on th e oil temperature and drain time. Use the “Refill oil capacity” val-
ues as a reference and check the oil level using th e dipstick when filling the engine with oil.
6. Warm up the engine and check the area around the dr ain plug and oil filter for any oil leaks.
7. Stop the engine and wait for more than 10 minutes.
8. Check the oil level using the dipstick as shown. Add oil as nec- essary and install the oil filler cap.
CAUTION:
Do not overfill the engine with oil.
Changing Oil FilterINFOID:0000000001606176
REMOVAL
Oil drain plug : Refer to EM-82 .
Oil grade and viscosity : Refer to MA-12, "
Fluids and Lubricants" .
Oil capacity : Refer to MA-12, "
Fluids and Lubricants" .
SMA954C
Revision: March 2010 2008 QX56

CHASSIS AND BODY MAINTENANCEMA-29
< ON-VEHICLE MAINTENANCE >
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7. Start balancer machine. Make sure that inner and outer residual imbalance values are 5 g (0.17 oz) each
or below.
8. If either residual imbalance value exceeds 5 g (0.17 oz), repeat installation procedures.
TIRE ROTATION
• Follow the maintenance schedule for tire rotation service intervals.
Refer to MA-6, "
General Maintenance".
• When installing the wheel, tighten wheel nuts to the specified
torque.
CAUTION:
• When installing wheels, tighte n them diagonally by dividing
the work two to three times in order to prevent the wheels
from developing any distortion.
• Be careful not to tighten wh eel nut at torque exceeding the
criteria for preventing strain of disc rotor.
• Use NISSAN genuine wheel nuts for aluminum wheels.
Tire RotationINFOID:0000000001606189
1. Rotate the tires on each side from front to back as shown.
2. Adjust the tire pressure to specification. Refer to WT-51, "
Tire" .
3. After the tire rotation, retighten the wheel nuts after the vehicle has been driven for 1,000 km (600 miles), and also after a wheel
and tire have been installed such as after repairing a flat tire.
Checking Brake Flui d Level and LeaksINFOID:0000000001606190
• Check the brake fluid level in the reservoir tank. It should be
between the “MAX” and “MIN” li nes on the reservoir tank.
• If the fluid level is extremely low, check the brake system.
• If the brake warning lamp comes on when the fluid is at the correct
level, check the brake fluid level switch and the parking brake
switch.
Wheel balance Dynamic (At flange) Static (At flange)
Maximum allowable un-
balance Refer to WT-46, "
Adjustment".
Wheel nut tightening
torque: 133 N·m (14 kg-m, 98 ft-lb)
SMA829C
Wheel nuts : Refer to
WT-48 .
AMA159
WFIA0173E
Revision: March 2010 2008 QX56

MIR-8
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004873066
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 severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
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 NISSAN/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 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004873067
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

MWI
MWI-1
DRIVER INFORMATION & MULTIMEDIA
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CONTENTS
METER, WARNING LAMP & INDICATOR
BASIC INSPECTION ....... .............................4
DIAGNOSIS AND REPAIR WORKFLOW ..... .....4
Work Flow ........................................................... ......4
FUNCTION DIAGNOSIS ...............................5
METER SYSTEM ............................................ .....5
METER SYSTEM .........................................................5
METER SYSTEM : System Diagram ........................5
METER SYSTEM : System Description ....................5
METER SYSTEM : Arrangem ent of Combination
Meter ................................................................... ......
6
METER SYSTEM : Component Parts Location ........7
METER SYSTEM : Component Description ....... ......7
SPEEDOMETER ..........................................................8
SPEEDOMETER : System Diagram ................... ......8
SPEEDOMETER : System Description .....................8
SPEEDOMETER : Component Parts Location .........9
SPEEDOMETER : Component Description ........ ......9
TACHOMETER ...................................................... ......9
TACHOMETER : System Diagram ...........................9
TACHOMETER : System De scription .....................10
TACHOMETER : Component Parts Location ..... ....10
TACHOMETER : Component Description ..............10
ENGINE COOLANT TEMPERATURE GAUGE .... ....10
ENGINE COOLANT TEMPERATURE GAUGE :
System Diagram ......................................................
11
ENGINE COOLANT TEMPERATURE GAUGE :
System Description .................................................
11
ENGINE COOLANT TEMPERATURE GAUGE :
Component Parts Location ......................................
11
ENGINE COOLANT TEMPERATURE GAUGE :
Component Description ...........................................
12
FUEL GAUGE ........................................................ ....12
FUEL GAUGE : System Diagram ...........................12
FUEL GAUGE : System Description .......................12
FUEL GAUGE : Component Parts Location ...........12
FUEL GAUGE : Component Description ............. ....13
ENGINE OIL PRESSURE GAUGE ............................13
ENGINE OIL PRESSURE GAUGE : System Dia-
gram .................................................................... ....
13
ENGINE OIL PRESSURE GAUGE : System De-
scription ...................................................................
13
ENGINE OIL PRESSURE GAUGE : Component
Parts Location ..........................................................
14
ENGINE OIL PRESSURE GAUGE : Component
Description ...............................................................
14
VOLTAGE GAUGE ................................................ ....14
VOLTAGE GAUGE : System Diagram ....................15
VOLTAGE GAUGE : System Description ................15
VOLTAGE GAUGE : Component Parts Location ....15
VOLTAGE GAUGE : Component Description .........16
ODO/TRIP METER ................................................. ....16
ODO/TRIP METER : System Diagram ....................16
ODO/TRIP METER : System Description ................16
ODO/TRIP METER : Component Parts Location ....16
ODO/TRIP METER : Component Description .........17
SHIFT POSITION INDICATOR .............................. ....17
SHIFT POSITION INDICATOR : System Diagram ....17
SHIFT POSITION INDICATOR : System Descrip-
tion ...........................................................................
17
SHIFT POSITION INDICATOR : Component
Parts Location ..........................................................
18
SHIFT POSITION INDICATOR : Component De-
scription ............................................................... ....
18
WARNING LAMPS/INDICATOR LAMPS .............. ....18
WARNING LAMPS/INDICATOR LAMPS : System
Diagram ............................................................... ....
18
WARNING LAMPS/INDICATOR LAMPS : System
Description ........................................................... ....
19
WARNING LAMPS/INDICATOR LAMPS : Com-
ponent Parts Location ..............................................
19
WARNING LAMPS/INDICATOR LAMPS : Com-
ponent Description ...................................................
19
Revision: March 2010 2008 QX56

MWI-2
INFORMATION DISPLAY .........................................19
INFORMATION DISPLAY : System Diagram .........20
INFORMATION DISPLAY : System Description ....20
INFORMATION DISPLAY : Component Parts Lo-
cation ................................................................... ...
21
INFORMATION DISPLAY : Component Descrip-
tion ....................................................................... ...
21
COMPASS .........................................................22
Description ........................................................... ...22
DIAGNOSIS SYSTEM (METER) .......................24
Diagnosis Description .......................................... ...24
CONSULT-III Function (METER/M&A) ................ ...25
COMPONENT DIAGNOSIS ........................28
DTC U1000 CAN COMMUNICATION ............ ...28
DTC Logic ............................................................ ...28
Diagnosis Procedure .............................................28
DTC B2205 VEHICLE SPEED CIRCUIT ...........29
Description ........................................................... ...29
DTC Logic ...............................................................29
Diagnosis Procedure .............................................29
POWER SUPPLY AND GROUND CIRCUIT .....30
COMBINATION METER ........................................ ...30
COMBINATION METER : Diagnosis Procedure ....30
BCM (BODY CONTROL MODULE) ...................... ...30
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
31
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) .......................... ...
31
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .....................................................................
31
FUEL LEVEL SENSOR SIGNAL CIRCUIT .......33
Description ........................................................... ...33
Component Function Check ...................................33
Diagnosis Procedure .............................................33
Component Inspection ............................................34
OIL PRESSURE SWITCH SIGNAL CIRCUIT ...35
Description ..............................................................35
Component Function Check ...................................35
Diagnosis Procedure ..............................................35
Component Inspection ............................................35
PARKING BRAKE SWITCH SIGNAL CIR-
CUIT ...................................................................
36
Description ........................................................... ...36
Component Function Check ...................................36
Diagnosis Procedure ..............................................36
Component Inspection ............................................36
WASHER LEVEL SWITCH SIGNAL CIRCUIT ...37
Description ........................................................... ...37
Diagnosis Procedure ............................................ ...37
Component Inspection ............................................37
COMPASS .........................................................38
Wiring Diagram .................................................... ...38
CLOCK ..............................................................40
Wiring Diagram .................................................... ...40
ECU DIAGNOSIS .......................................42
COMBINATION METER ................................. ...42
Reference Value .................................................. ...42
Wiring Diagram .......................................................44
Fail Safe ..................................................................61
DTC Index ...............................................................62
BCM (BODY CONTROL MODULE) ..................64
Reference Value .................................................. ...64
Terminal Layout ......................................................64
Physical Values .......................................................64
Wiring Diagram .......................................................64
DTC Inspection Priority Chart ...............................64
DTC Index ..............................................................64
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
65
Reference Value .................................................. ...65
Terminal Layout ......................................................65
Physical Values .......................................................65
Wiring Diagram .......................................................65
Fail Safe .................................................................65
DTC Index ..............................................................65
SYMPTOM DIAGNOSIS ............................66
THE FUEL GAUGE POINTER DOES NOT
MOVE .............................................................. ...
66
Description ........................................................... ...66
Diagnosis Procedure ...............................................66
THE FUEL GAUGE POINTER DOES NOT
MOVE TO "F" WHEN REFUELING ..................
67
Description ........................................................... ...67
Diagnosis Procedure ...............................................67
THE OIL PRESSURE WARNING LAMP
DOES NOT TURN ON .................................... ...
68
Description ........................................................... ...68
Diagnosis Procedure ...............................................68
THE OIL PRESSURE WARNING LAMP
DOES NOT TURN OFF .................................. ...
69
Description ........................................................... ...69
Diagnosis Procedure ...............................................69
THE PARKING BRAKE RELEASE WARNING
CONTINUES DISPLAYING, OR DOES NOT
DISPLAY ............................................................
70
Description ........................................................... ...70
Diagnosis Procedure ...............................................70
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THE LOW WASHER FLUID WARNING CON-
TINUES DISPLAYING, or DOES NOT DIS-
PLAY .............................................................. ....
71
Description .......................................................... ....71
Diagnosis Procedure ...............................................71
THE DOOR OPEN WARNING CONTINUES
DISPLAYING, OR DOES NOT DISPLAY ..........
72
Description .......................................................... ....72
Diagnosis Procedure ...............................................72
NORMAL OPERATING CONDITION .................73
COMPASS ............................................................. ....73
COMPASS : Description .........................................73
PRECAUTION ...... ........................................74
PRECAUTIONS .................................................74
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
74
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ...................................
74
ON-VEHICLE REPAIR .................................76
COMBINATION METER ...................................76
Removal and Installation ..................................... ....76
CLOCK ..............................................................77
Removal and Installation .........................................77
Revision: March 2010 2008 QX56

MWI
METER SYSTEMMWI-5
< FUNCTION DIAGNOSIS >
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FUNCTION DIAGNOSIS
METER SYSTEM
METER SYSTEM
METER SYSTEM : System DiagramINFOID:0000000001691233
METER SYSTEM : System DescriptionINFOID:0000000001691234
COMBINATION METER
• Speedometer, odo/trip meter, tachometer, fuel gauge, engine coolant temperature gauge, engine oil pres-
sure gauge, voltage gauge and information display are controlled by the unified meter control unit, which is
built into the combination meter.
• Warning and indicator lamps are controlled by the unified meter control unit and by components connected directly to the combination meter.
• Digital meter is adopted for odo/trip meter.* *The record of the odometer is kept even if the battery cable is disconnected. The record of the trip meter is
erased when the battery cable is disconnected.
• Odo/trip meter segments can be checked in diagnosis mode.
• Meter/gauge can be checked in diagnosis mode.
AWNIA0274GB
Revision: March 2010 2008 QX56