Battery cables INFINITI QX4 2001 Factory Service Manual

Removal and InstallationNBBT0008CAUTION:
IDisconnect both battery cables in advance.
IDisconnect air bag system line in advance.
INever tamper with or force air bag lid open, as this may
adversely affect air bag performance.
IBe careful not to scratch pad and other parts.
SBT042A
*1 RS-17 *2 BT-28
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INSTRUMENT PANEL ASSEMBLY
Removal and Installation
BT-21

Removal and InstallationNBBT0014IWhen removing or installing the seat trim, carefully handle it to keep dirt out and avoid damage.
HFor Wiring Diagram, refer to EL-181, ªPOWER SEATº for details.
CAUTION:
IBefore removing the front seat, turn the ignition switch off, disconnect both battery cables and wait
at least 3 minutes.
IWhen checking the power seat circuit for continuity using a circuit tester, do not confuse its con-
nector with the side air bag module connector. Such an error may cause the air bag to deploy.
IDo not drop, tilt, or bump the side air bag module installed in the seat. Always handle it with care.
SBT066A
SBT067A
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FRONT SEAT
Removal and Installation
BT-41

Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ªAIR BAGº AND ªSEAT BELT
PRE-TENSIONERº
NBRS0001The 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.
PRECAUTION FOR SEAT BELT SERVICENBRS0002CAUTION:
IBefore removing the seat belt pre-tensioner assembly, turn the ignition switch off, disconnect both
battery cables and wait at least 3 minutes.
IDo not use electrical test equipment for seat belt pre-tensioner connector.
IAfter replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten-
sioner connector, check the system function. Refer to ªSRS Operation Checkº (RS-38) for details.
IDo not use disassemble buckle or seat belt assembly.
IReplace anchor bolts if they are deformed or worn out.
INever oil tongue and buckle.
IIf any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
assembly.
IIf webbing is cut, frayed, or damaged, replace seat belt assembly.
IWhen replacing seat belt assembly, use a genuine seat belt assembly.
After A CollisionNBRS0002S01WARNING:
Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the
collision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an accident. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or improper operation is noted. Seat belt pre-tensioner
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly if:
IThe seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
buckles show no damage and continue to operate properly).
IThe seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide, etc.)
IThe seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for dam-
age or distortion and repair as necessary before installing a new seat belt assembly.
IAnchor bolts are deformed or worn out.
IThe seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision in
which the air bags are deployed.
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SEAT BELTS
Precautions
RS-3

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

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

Satellite Sensor
REMOVAL AND INSTALLATIONNBRS0035CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
IDo not use old bolts coated with bonding agent after
removal; replace with new ones.
ICheck satellite sensor for proper installation.
ICheck satellite sensor to ensure they are free of
deformities, dents, cracks or rust. If it shows any visible
signs of damage, replace it with new one.
IAfter replacement of satellite sensor, check SRS function
and perform self-diagnosis for SRS. Refer to ªSRS Opera-
tion Checkº for details. (RS-38)
IDo not attempt to disassemble satellite sensor.
IReplace satellite sensor if it has been dropped or sus-
tained an impact.
SRS642-A
1. Remove seat belt pre-tensioner with load limiter. Refer to
ªFront Seat Beltº for details. (RS-4)
2. Disconnect satellite sensor connector.
3. Remove bolt and nuts from satellite sensor unit.
Then remove the satellite sensor.
NOTE:
ITo install, reverse the removal procedure sequence.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Satellite Sensor
RS-16

Driver Air Bag Module and Spiral Cable
REMOVAL AND INSTALLATIONNBRS0013
SRS782-A
SBF811E
REMOVALNBRS0014CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait at least 3 minutes.
IAlways work from the side of air bag module.
1. Remove lower lid from steering wheel, and disconnect air bag
module connector.
SBF812E
2. Remove side lids, ASCD steering switch and Audio steering
switch (or TEL switch). Using the TAMPER RESISTANT TORX
(Size T50), remove left and right special bolts. Air bag module
can then be removed.
SRS161
CAUTION:
IAlways place air bag module with pad side facing upward.
IDo not attempt to disassemble air bag module.
IThe special bolts are coated with bonding agent. Do not
use old bolts after removal; replace with new ones.
IDo not insert any foreign objects (screwdriver, etc.) into
air bag module connector.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable
RS-17

SBF812EH
8. Position air bag module and tighten with new special bolts.
9. Connect air bag module connector.
10. Install steering switches and lids.
11. Conduct self-diagnosis to ensure entire SRS operates prop-
erly. (Use CONSULT-II or warning lamp check.)
Before performing self-diagnosis, connect both battery cables.
12. Turn steering wheel to the left end and then to the right end
fully to make sure that spiral cable is set in the neutral posi-
tion.
If air bag warning lamp blinks or stays ON (at the user mode),
it shows the spiral cable may be snapped due to its improper
position. Perform self-diagnosis again (use CONSULT-II or
warning lamp). If a malfunction is detected, replace the spiral
cable with a new one.
13. Perform self-diagnosis again to check that no malfunction is
detected.
SRS162
Front Passenger Air Bag Module
REMOVALNBRS0016CAUTION:
IBefore servicing SRS, turn the ignition switch off, discon-
nect both battery cables and wait for at least 3 minutes.
IAlways work from the side of or under air bag module.
1. Remove glove box assembly. Refer to BT-21, ªINSTRUMENT
PANEL ASSEMBLYº for details.
2. Disconnect front passenger air bag module connector from air
bag harness connector.
3. Remove instrument lower panel on passenger side. Refer to
BT-21, ªINSTRUMENT PANEL ASSEMBLYº for details.
SRS948
4. Remove hex bolts or special bolts using the TAMPER RESIS-
TANT TORX (Size T50) from front passenger air bag module.
5. Remove instrument panel assembly. Refer to BT-21, ªINSTRU-
MENT PANEL ASSEMBLYº for details.
6. Remove the bolts from left and right sides of front passenger
air bag module. Then remove the air bag module from the
instrument panel assembly.
IThe air bag module is heavy and should be supported using
both hands during removal.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable (Cont'd)
RS-19

SRS162
4. Install instrument lower panel on passenger side.
5. Connect air bag module connector to air bag harness connec-
tor.
6. Install glove box assembly.
7. Connect both battery cables.
8. Conduct self-diagnosis to ensure entire SRS operates prop-
erly. (Use CONSULT-II or warning lamp check.)
SRS682
Side Air Bag Module
REMOVALNBRS0036CAUTION:
IBefore servicing SRS, turn the ignition switch OFF, dis-
connect both battery cables and wait at least 3 minutes.
IAlways work from the rear of the air bag module.
1. Remove seatback board.
IWhen using a clip removal tool to remove the seatback
board, take care not to damage the air bag harness.
2. Disconnect side air bag module connector by sliding tab.
SRS683
3. Pull up the seatback trim.
4. Remove the nuts securing the inner cloth with seatback frame.
Then pull up the inner cloth.
5. Remove seatback trim. Refer to BT-41, ªFRONT SEATº for
details.
SRS684
6. Remove the torx nuts coated with bonding agent from the side
air bag module.
7. Remove side air bag connector. Side air bag module can then
be removed.
SRS623
CAUTION:
IAlways place the air bag module stading with the stud bolt
side setting bottom.
IDo not attempt to disassemble air bag module.
IThe torx nuts are coated with bonding agent. Do not use
old nuts after removal; replace with new coated nuts.
IDo not insert any foreign objects (screwdriver, etc.) into
air bag module connector.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Passenger Air Bag Module (Cont'd)
RS-21

SBF814E
IReplace air bag module if it has been dropped or sus-
tained an impact.
IDo not expose the air bag module to temperatures exceed-
ing 90ÉC (194ÉF).
IDo not allow oil, grease or water to come in contact with
the air bag module.
IAfter air bag inflates, all parts of front seatback (including
front seatback frame) should be replaced.
SRS684
INSTALLATIONNBRS00371. Install side air bag module on seatback frame with new torx
nuts coated with bonding agent.
2. Install side air bag connector.
3. Install seatback trim. Refer to BT-41, ªFRONT SEATº for details.
SRS683
4. Secure the inner cloth which covers the side air bag module
with nuts.
SRS725
5. Connect side air bag module connector.
6. Install seatback board with new clips.
7. Connect both battery cables.
8. Go to ªSRS Operation Checkº, RS-38 and perform self-diag-
nosis to ensure entire SRS operates properly. (Use CON-
SULT-II or air bag warning lamp.)
Disposal of Air Bag Module and Seat Belt Pre-
tensioner
NBRS0018IBefore disposing of air bag module and seat belt pre-tensioner,
or vehicles equipped with such systems, deploy the systems.
If such systems have already been deployed due to an
accident, dispose of them as indicated in ªDISPOSING OF AIR
BAG MODULE AND SEAT BELT PRE-TENSIONERº (RS-28).
IWhen deploying the air bag module and seat belt pre-
tensioner, always use the Special Service Tool; Deployment
tool KV99106400 (Kent-Moore No. J38381).
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Side Air Bag Module (Cont'd)
RS-22