tire type INFINITI QX4 2001 Factory Service Manual

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Pages: 2395, PDF Size: 43.2 MB

Page 400 of 2395

INFINITI QX4 2001 Factory Service Manual SBR822BA
InspectionNBBR0116
SBR823BA
SBR705AA
CAUTION:
ICarefully monitor brake fluid level at master cylinder.
IUse new brake fluid ªDOT 3º.
IBe careful not to splash brake fluid on painted areas;

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INFINITI QX4 2001 Factory Service Manual SEL683V
System Description=NBEL0228OUTLINENBEL0228S01The Navigation System (Multi-AV System) relies upon three sens-
ing devices in order to determine vehicle location at regular time
intervals.
1. Ve

SEL683V
System Description=NBEL0228OUTLINENBEL0228S01The Navigation System (Multi-AV System) relies upon three sens-
ing devices in order to determine vehicle location at regular time
intervals.
1. Vehicle speed sensor: Determines the distance the vehicle has
traveled.
2. Gyro (Angular velocity sensor): Determines vehicle steering
angle and directional change.
3. GPS antenna (GPS data): Determines vehicle forward move-
ment and direction.
The data provided by the three sensing functions together with a
comparison of the mapping information read from the CD-ROM
drive permit accurate determination of the vehicle's current location
and subsequent course (map matching). The information appears
on a liquid crystal display.
This comparison of GPS data (vehicle position sensing) and map
matching permits precise determination of vehicle location.
SEL684V
Position Sensor Operating PrinciplesNBEL0228S0101The sensor determines current vehicle location by calculating the
previously sensed position, the distance traveled from this position,
and the directional changes occurring during this travel.
1. Distance traveled
The distance traveled is calculated using signals received from
the vehicle speed sensor. The sensor automatically compen-
sates for the slightly reduced wheel and tire diameter resulting
from tire wear.
2. Forward movement (Direction)
Changes in the direction of forward movement are calculated
by the gyro (angular velocity sensor) and the GPS antenna
(GPS data). Each of these functions has its advantage and
disadvantages. Depending upon conditions, one function takes
precedence over the other to accurately determine the direc-
tion of forward movement.
Function type Advantage Disadvantage
Gyro (Angular
velocity sen-
sor)IAble to accurately detect
minute changes in steering
angle and direction.ICalculation errors may
accumulate over a long
period of continuous
vehicle travel.
GPS antenna
(GPS data)IAble to sense vehicle travel
in four general directions
(North, South, East, and
West)IUnable to detect direction
of vehicle travel at low
vehicle speeds.
NAVIGATION SYSTEM
System Description
EL-386

Page 1996 of 2395

INFINITI QX4 2001 Factory Service Manual MAINTENANCE
SECTION
MA
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............2

MAINTENANCE
SECTION
MA
CONTENTS
PRECAUTIONS...............................................................2
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............2
PREPARATION...............................................................3
Special Service Tool ....................................................3
Commercial Service Tool .............................................3
GENERAL MAINTENANCE............................................4
PERIODIC MAINTENANCE............................................6
Schedule 1 ...................................................................7
EMISSION CONTROL SYSTEM MAINTENANCE.........7
CHASSIS AND BODY MAINTENANCE........................8
Schedule 2 ...................................................................9
EMISSION CONTROL SYSTEM MAINTENANCE.........9
CHASSIS AND BODY MAINTENANCE......................10
RECOMMENDED FLUIDS AND LUBRICANTS........... 11
Fluids and Lubricants ................................................ 11
SAE Viscosity Number ..............................................12
GASOLINE ENGINE OIL..........................................12
GEAR OIL...............................................................12
Anti-freeze Coolant Mixture Ratio .............................12
ENGINE MAINTENANCE..............................................13
Checking Drive Belts .................................................13
Changing Engine Coolant..........................................14
-DRAINING ENGINE COOLANT-..............................14
-REFILLING ENGINE COOLANT-..............................15
-FLUSHING COOLING SYSTEM-..............................16
Checking Fuel Lines ..................................................16
Changing Fuel Filter ..................................................16
WITH CONSULT-II..............................................16
WITHOUT CONSULT-II.......................................17
Changing Air Cleaner Filter .......................................17
VISCOUS PAPER TYPE...........................................17
Changing Engine Oil..................................................18
Changing Oil Filter .....................................................18
Changing Spark Plugs ...............................................19
Checking EVAP Vapor Lines .....................................20
CHASSIS AND BODY MAINTENANCE.......................21
Checking Exhaust System.........................................21
Checking A/T Fluid ....................................................21
Changing A/T Fluid ....................................................21Checking All-mode 4WD Transfer Fluid ....................22
Changing All-mode 4WD Transfer Fluid ....................22
Checking Propeller Shaft ...........................................23
Greasing Propeller Shaft ...........................................23
Checking Differential Gear Oil ...................................23
Changing Differential Gear Oil ..................................24
LIMITED-SLIP DIFFERENTIAL GEAR........................24
Balancing Wheels ......................................................24
Tire Rotation ..............................................................24
Checking Brake Fluid Level and Leaks.....................25
Checking Brake Lines and Cables ............................25
Checking Disc Brake .................................................25
ROTOR...................................................................25
CALIPER.................................................................25
PAD........................................................................25
Checking Drum Brake ...............................................26
WHEEL CYLINDER..................................................26
DRUM.....................................................................26
LINING....................................................................26
TEMPORARY METHOD FOR CHECKING LINING
WEAR
.....................................................................26
Checking Steering Gear, Linkage and Transfer
Gear ...........................................................................26
STEERING GEAR....................................................26
STEERING LINKAGE...............................................26
STEERING TRANSFER GEAR..................................26
Checking Power Steering Fluid and Lines ................27
CHECKING FLUID LEVEL........................................27
CHECKING LINES...................................................27
Lubricating Locks, Hinges and Hood Latches...........27
Checking Seat Belts, Buckles, Retractors,
Anchors and Adjusters...............................................28
SERVICE DATA AND SPECIFICATIONS (SDS).........29
Engine Maintenance ..................................................29
DRIVE BELT DEFLECTION......................................29
DRIVE BELT TENSION............................................29
SPARK PLUG TYPE................................................29
Chassis and Body Maintenance ................................29
WHEEL BALANCE...................................................29
GI
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX

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INFINITI QX4 2001 Factory Service Manual SEAT BELT RETRACTOR ON-VEHICLE CHECKNBRS0029S03Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)NBRS0029S0301NOTE:
All seat belt retractors are of the Emergency Locking Retract

SEAT BELT RETRACTOR ON-VEHICLE CHECKNBRS0029S03Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)NBRS0029S0301NOTE:
All seat belt retractors are of the Emergency Locking Retractors (ELR) type. In an emergency (sudden stop)
the retractor will lock and prevent the belt from extending any further. All 3-point type seat belt retractors except
the driver's seat belt also have an Automatic Locking Retractors (ALR) mode. The ALR mode (also called child
restraint mode) is used when installing child seats. The ALR mode is activated when the seat belt is fully
extended. When the belt is then retracted partially, the ALR mode automatically locks the seat belt in a spe-
cific position so the belt cannot be extended any further. To cancel the ALR mode, allow the seat belt to fully
wind back into the retractor.
Check the seat belt retractors using the following test(s) to determine if a retractor assembly is operating
properly.
ELR Function Stationary CheckNBRS0029S0302Grasp the shoulder belt and pull forward quickly. The retractor should lock and prevent the belt from extend-
ing further.
ALR Function Stationary CheckNBRS0029S03041. Pull out entire length of seat belt from retractor until a click is heard.
2. Retract the belt partially. A clicking noise should be heard as the belt retracts indicating that the retractor
is in the Automatic Locking Retractors (ALR) mode.
3. Grasp the seat belt and try to pull out the retractor. The belt must lock and not extend any further. If NG,
replace the retractor assembly.
4. Allow the entire length of the belt to retract to cancel the automatic locking mode.
ELR Function Moving CheckNBRS0029S0303WARNING:
Perform the following test in a safe, open area clear of other vehicles and obstructions (for example,
a large, empty parking lot). Road surface must be paved and dry. DO NOT perform the following test
on wet or gravel roads or on public streets and highways. This could result in an accident and seri-
ous personal injury. The driver and passenger must be prepared to brace themselves in the event the
retractor does not lock.
1. Fasten driver's seat belt. Buckle a passenger into the seat for the belt that is to be tested.
2. Proceed to the designated safe area.
3. Drive the vehicle at approximately 16 km/h (10 MPH). Notify any passengers of a pending sudden stop
and the driver and passenger must be prepared to brace themselves in the event the retractor does not
lock, apply brakes firmly and make a very hard stop.
During stop, seat belts should lock and not be extended. If the seat belt retractor assembly does not lock,
perform the retractor off-vehicle check.
SEAT BELT RETRACTOR OFF-VEHICLE CHECKNBRS0029S041. Remove the seat belt retractor assembly.
2. Slowly pull out belt while tilting the retractor assembly forward from the mounted position without twisting
the retractor assembly as shown in the illustration.
15 degrees or less tilt: Belt can be pulled out.
35 degrees or more tilt: Belt locks and cannot be pulled out.
SEAT BELTS
Seat Belt Inspection (Cont'd)
RS-8

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INFINITI QX4 2001 Factory Service Manual Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ªAIR BAGº AND ªSEAT BELT
PRE-TENSIONERº
NBRS0005The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along wit

Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ªAIR BAGº AND ªSEAT BELT
PRE-TENSIONERº
NBRS0005The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS composition which is available to INFINITI QX4 is as follows:
IFor a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt
pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
IFor a side collision
The Supplemental Restraint System consists of side air bag module (located in the outer side of front seat),
satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness,
warning lamp (one of components of air bags for a frontal collision).
WARNING:
ITo avoid rendering the SRS inoperative, 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 INFINITI dealer.
IImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
IDo not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
PRECAUTIONS FOR SRS ªAIR BAGº AND ªSEAT BELT PRE-TENSIONERº SERVICENBRS0006IDo not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
IBefore servicing the SRS, turn ignition switch ªOFFº, disconnect both battery cables and wait at least 3
minutes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
IDiagnosis sensor unit must always be installed with their arrow marks ªgº pointing towards the front of
the vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before
installation and replace as required.
IThe spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.
IHandle air bag module carefully. Always place driver and passenger air bag modules with the pad side
facing upward and side air bag module (built-in type) standing with the stud bolt side setting bottom.
IConduct self-diagnosis to check entire SRS for proper function after replacing any components.
IAfter air bag inflates, the front instrument panel assembly should be replaced if damaged.
WIRING DIAGRAMS AND TROUBLE DIAGNOSISNBRS0007When you read wiring diagrams, refer to the following:
IGI-11, ªHOW TO READ WIRING DIAGRAMSº
IEL-9, ªPOWER SUPPLY ROUTINGº for power distribution circuit
When you perform trouble diagnosis, refer to the following:
IGI-35, ªHOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSESº
IGI-24, ªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Precautions
RS-10

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INFINITI QX4 2001 Factory Service Manual Service Data and Specifications (SDS)
GENERAL SPECIFICATIONS (FRONT)=NBSU0016
Suspension type Independent macpherson strut with coil spring
Strut typeDouble-acting hydraulic
Stabilizer barStandard equ

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INFINITI QX4 2001 Factory Service Manual INSTALLATIONNBSU0032When installing each link, pay attention to direction of nuts
and bolts.
When installing each rubber part, final tightening must be car-
ried out under unladen condition with tires