2001 INFINITI QX4 lock

SPD007-B
SPD552
AssemblyNBPD0041DIFFERENTIAL CASENBPD0041S011. Install side gears, pinion mate gears and thrust washers into
differential case.
SPD258
2. Fit pinion mate shaft to differential case so that it meets lock
pin holes.
3. Adjust backlash between side gear and pinion mate gear by
selecting side gear thrust washer.
Refer to SDS, PD-62.
Backlash between side gear and pinion mate gear
(Clearance between side gear thrust washer and differ-
ential case):
0.10 - 0.20 mm (0.0039 - 0.0079 in)
SPD030
4. Install pinion mate shaft lock pin with a punch.
Make sure lock pin is flush with case.
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REAR FINAL DRIVEH233B
Adjustment (Cont'd)
PD-57

SPD698
14. Tighten side bearing cap bolts.
15. Install side lock finger in place to prevent rotation during opera-
tion.
SPD247
16. Check runout of ring gear with a dial indicator.
Runout limit: 0.08 mm (0.0031 in)
IIf backlash varies excessively in different places, the variance
may have resulted from foreign matter caught between the ring
gear and the differential case.
IIf the backlash varies greatly when the runout of the ring gear
is within a specified range, the hypoid gear set or differential
case should be replaced.
17. Check tooth contact. Refer to ªTOOTH CONTACTº, PD-56.
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REAR FINAL DRIVEH233B
Assembly (Cont'd)
PD-61

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

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.
SBF239F
3. Set steering wheel in the neutral position.
4. Disconnect horn connector and remove nuts.
5. Remove dynamic damper. Then using steering wheel puller,
remove steering wheel. Be careful not to over-tighten puller
bolt on steering wheel.
CAUTION:
IDo not tap or bump the steering wheel.
6. Remove steering column cover.
SRS384
7. Unlock the spiral cable connector. Then disconnect connectors
and remove the four screws. The spiral cable can then be
removed.
CAUTION:
IDo not attempt to disassemble spiral cable.
IDo not apply lubricant to the spiral cable.
SRS276
INSTALLATIONNBRS00151. Set the front wheels in the straight-ahead position.
2. Make sure that the spiral cable is in the neutral position.
The neutral position is detected by turning left about 2.5 revo-
lutions from the right end position. Align the two marks (
).
CAUTION:
IThe spiral cable may snap due to steering operation if the
cable is installed in an improper position.
IAlso, with the steering linkage disconnected, the cable
may snap by turning the steering wheel beyond the limited
number of turns. The spiral cable can be turned to the left
about 2.5 turns from the right end position.
3. Connect spiral cable connector and tighten with screws. Install
steering column cover.
4. Install steering wheel, aligning with spiral cable pin guides, and
pull spiral cable through.
5. Connect horn connector and engage spiral cable with pawls in
steering wheel. Move air bag module connector away from
steering wheel lower lid opening.
6. Tighten nut.
: 29.4 - 39.2 N´m (3.0 - 4.0 kg-m, 22 - 28 ft-lb)
7. Install dynamic damper.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Driver Air Bag Module and Spiral Cable (Cont'd)
RS-18

IWhen deploying the air bag module and seat belt pre-
tensioner, stand at least 5 m (16 ft) away from the deployment
component.
IWhen deploying air bag module and seat belt pre-tensioner, a
fairly loud noise is made, followed by smoke being released.
The smoke is not poisonous, however, be careful not to inhale
smoke since it irritates the throat and can cause choking.
IAlways activate one air bag module at a time.
IDue to heat, leave air bag module unattended for more than
30 minutes after deployment. Also leave seat belt pre-ten-
sioner unattended for move than 10 minutes after deployment.
IBe sure to wear gloves when handling a deployed air bag
module and seat belt pre-tensioner.
INever apply water to the deployed air bag module and seat
belt pre-tensioner.
IWash your hands clean after finishing work.
IPlace the vehicle outdoors with an open space of at least 6 m
(20 ft) on all sides when deploying air bag module and seat belt
pre-tensioner while mounted in vehicle.
IUse a voltmeter to make sure the vehicle battery is fully
charged.
IDo not dispose of the air bag module and seat belt pre-ten-
sioner un-deployed.
SRS019
CHECKING DEPLOYMENT TOOLNBRS0018S01Connecting to BatteryNBRS0018S0101CAUTION:
The battery must show voltage of 9.6V or more.
Remove the battery from the vehicle and place it on dry wood
blocks approximately 5 m (16 ft) away from the vehicle.
IWait 3 minutes after the vehicle battery is disconnected before
proceeding.
IConnect red clip of deployment tool to battery positive termi-
nal and black clip to negative terminal.
Make sure the polarity is correct. The right side lamp in the
tool, marked ªdeployment tool powerº, should glow with a
green light. If the right side lamp glows red, reverse the con-
nections to the battery.
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Disposal of Air Bag Module and Seat Belt Pre-tensioner (Cont'd)
RS-23

System DescriptionNBSC0004Power is supplied at all times
Ito ignition switch terminal 1
Ithrough 40A fusible link (lettere, located in the fuse and fusible link box).
With the ignition switch in the ON or START position, power is supplied through 10A fuse [No. 18, located in
the fuse block (J/B)].
Ito park/neutral position relay terminal 1.
Also, with the ignition switch in the START position, power is supplied
Ifrom ignition switch terminal 5
Ito park/neutral position relay terminal 6.
With the selector lever in the P or N position, ground is supplied
Ito park/neutral position relay terminal 2 through the park/neutral position switch.
Then park/neutral position relay is energized and power is supplied
Ifrom park/neutral position relay terminal 7
Ito terminal 2 of the starter motor windings.
The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the engine
starts.
STARTING SYSTEM
System Description
SC-10

ConstructionNBSC0006
MEL949LB
MEL950L
Removal and InstallationNBSC0007
Pinion/Clutch CheckNBSC00081. Inspect pinion teeth.
IReplace pinion if teeth are worn or damaged. (Also check
condition of ring gear teeth.)
2. Inspect reduction gear teeth.
IReplace reduction gear if teeth are worn or damaged. (Also
check condition of armature shaft gear teeth.)
3. Check to see if pinion locks in one direction and rotates
smoothly in the opposite direction.
IIf it locks or rotates in both directions, or unusual resistance is
evident, replace.
STARTING SYSTEM
Construction
SC-18

System DescriptionNBSC0009The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times to alternator terminal S through:
I120A fusible link (lettera, located in the fuse and fusible link box), and
I7.5A fuse (No. 65, located in the fuse and fusible link box).
Terminal B supplies power to charge the battery and operate the vehicle's electrical system. Output voltage
is controlled by the IC regulator at terminal S detecting the input voltage. The charging circuit is protected by
the 120A fusible link.
Terminal E of the alternator supplies ground through body ground E101.
With the ignition switch in the ON or START position, power is supplied
Ithrough 10A fuse [No. 8, located in the fuse block (J/B)]
Ito combination meter terminal 12 for the charge warning lamp.
Ground is supplied to terminal 43 of the combination meter through terminal L of the alternator. With power
and ground supplied, the charge warning lamp will illuminate. When the alternator is providing sufficient volt-
age with the engine running, the ground is opened and the charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a fault is indicated.GI
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CHARGING SYSTEM
System Description
SC-19