2001 INFINITI QX4 Factory Service Manual

oil capacity battery capacity air conditioning reset water pump sensor

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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 SRS361
If NG, replace the retractor assembly.
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SEAT BELTS
Seat Belt Inspection (Contd)
RS-9

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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 Preparation
SPECIAL SERVICE TOOLS=NBRS0008The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
KV991

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INFINITI QX4 2001 Factory Service Manual DescriptionNBRS0009
SRS585-F
The air bag deploys if the diagnosis sensor unit activates while the ignition switch is in the ªONº or ªSTARTº
position.
The collision modes for which supplemental res

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INFINITI QX4 2001 Factory Service Manual load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat
belt web tension while maintaining force.
SRS560
Built-in Type S

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INFINITI QX4 2001 Factory Service Manual SRS797-A
Maintenance ItemsNBRS0011CAUTION:
Do not use electrical test equipment to check SRS circuit.
1. Check operation of ªAIR BAGº warning lamp.
After turning ignition key to ªONº position, air

SRS797-A
Maintenance ItemsNBRS0011CAUTION:
Do not use electrical test equipment to check SRS circuit.
1. Check operation of ªAIR BAGº warning lamp.
After turning ignition key to ªONº position, air bag warning lamp
illuminates. The ªAIR BAGº warning lamp will go off after about
7 seconds if no malfunction is detected. If any of the following
warning lamp conditions occur, immediately check the air bag
or seat belt pre-tensioner system. Refer to RS-38 for details.
IThe ªAIR BAGº warning lamp does not illuminate when the
ignition switch is turned ªONº.
IThe ªAIR BAGº warning lamp does not go off about 7 seconds
after the ignition switch is turned ªONº.
IThe ªAIR BAGº warning lamp blinks after about 7 seconds after
the ignition switch is turned ªONº.
2. Visually check SRS components.
1) Diagnosis sensor unit
ICheck diagnosis sensor unit and bracket for dents, cracks and
deformities.
ICheck connectors for damage, and terminals for deformities.
2) Air bag module and steering wheel
IRemove air bag module from steering wheel, instrument panel
or seatback. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
IInstall driver air bag module to steering wheel to check fit or
alignment with the wheel.
ICheck steering wheel for excessive free play.
IInstall passenger air bag module to instrument panel to check
fit or alignment with the instrument panel.
IInstall side air bag module to seatback to check fit and align-
ment with the seat.
3) Spiral cable
ICheck spiral cable for dents, cracks, or deformities.
ICheck connectors and protective tape for damage.
ICheck steering wheel for noise, binding or heavy operation.
4) Main harness, air bag harness, body harness, side air bag
module sub-harness
ICheck connectors for poor connections, damage, and termi-
nals for deformities.
ICheck harnesses for binding, chafing or cut.
5) Seat belt pre-tensioner
ICheck harness cover and connectors for damage, terminals
for deformities, and harness for binding.
ICheck belts for damage and anchors for loose mounting.
ICheck retractor for smooth operation.
IPerform self-diagnosis for seat belt pre-tensioner using air bag
warning lamp or CONSULT-II. Refer to ªSRS Operation Checkº
for details. (RS-38)
6) Satellite sensor
ICheck satellite sensor (including bracket portion) for dents,
cracks or deformities.
ICheck connectors for damage, and terminals for deformities.
CAUTION:
Replace previously used special bolts and ground bolt with
new ones.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Maintenance Items
RS-14

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INFINITI QX4 2001 Factory Service Manual Diagnosis Sensor Unit
REMOVAL AND INSTALLATIONNBRS0012CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait for at least 3 minutes.
IThe special bolts

Diagnosis Sensor Unit
REMOVAL AND INSTALLATIONNBRS0012CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait for at least 3 minutes.
IThe special bolts are coated with bonding agent while the
other bolt is for ground. Do not use old bolts after
removal; replace with new ones.
ICheck diagnosis sensor unit for proper installation.
ICheck diagnosis sensor unit to ensure it is free of
deformities, dents, cracks or rust. If they show any visible
signs of damage, replace them with new ones.
ICheck diagnosis sensor unit brackets to ensure they are
free of deformities or rust.
IReplace diagnosis sensor unit if it has been dropped or
sustained an impact.
IAfter replacement of diagnosis sensor unit, perform self-
diagnosis for SRS. Refer to ªSRS Operation Checkº for
details (RS-38).
SRS636-A
1. Disconnect connectors for driver and passenger air bag mod-
ules and seat belt pre-tensioner.
2. Remove console box. Refer to BT-21, ªINSTRUMENT PANEL
ASSEMBLYº.
3. Disconnect diagnosis sensor unit connector.
4. Remove ground bolt and also remove special bolts using the
TAMPER RESISTANT TORX (Size T50), from diagnosis sen-
sor unit.
Then remove the diagnosis sensor unit.
NOTE:
ITo install, reverse the removal procedure sequence.
SRS651-C
Seat Belt Pre-tensioner
REMOVAL AND INSTALLATIONNBRS0034CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
ICheck seat belt pre-tensioner with load limiter for proper
installation.
IAfter replacement of seat belt pre-tensioner, check SRS
function and perform self-diagnosis for SRS. Refer to
ªSRS Operation Checkº for details. (RS-38)
IDo not attempt to disassemble seat belt pre-tensioner with
load limiter.
IReplace seat belt pre-tensioner if it has been dropped or
sustained an impact.
IDo not expose seat belt pre-tensioner to temperatures
exceeding 80ÉC (176ÉF).
For removal of seat belt pre-tensioner, refer to ªFront Seat Beltº for
details. (RS-4)
NOTE:
ITo install, reverse the removal procedure sequence.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Diagnosis Sensor Unit
RS-15

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