warning INFINITI QX56 2007 Factory Service Manual

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< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003532841
The Supplemental Restraint System such as “AIR 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To 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 NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Seat Belt ServiceINFOID:0000000003532842
CAUTION:
• Before removing the seat belt pre-tensioner assembly, turn the ignition switch OFF, disconnect both
battery cables and wait at least 3 minutes.
• After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten-
sioner assembly connector, make sure entire SRS operates properly. Refer to SRS-20, "
SRS Opera-
tion Check".
• Do not disassemble buckle or seat belt assembly.
• Do not reuse seat belt anchor bolts after removal. Replace with new ones.
• Replace anchor bolts if they are deformed or worn out.
• Never oil tongue and buckle.
• If any component of seat belt assembly is questionable, do not repair. Replace the whole seat belt
assembly.
• If webbing is cut, frayed, or damaged, replace seat belt assembly.
• When replacing seat belt assembly, use a genuine NISSAN seat belt assembly.
AFTER A COLLISION
WARNING:
• 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 (including anchor bolts) if:
• The 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).
• The seat belt was damaged in an accident. (i.e., torn webbing, bent retractor or guide, etc.)
• The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage
or distortion and repair as necessary before installing a new seat belt assembly.
• Anchor bolts are deformed or worn out.
• The 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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< SERVICE INFORMATION >
SEAT BELTS
4. Remove push pin (2) and release elastic ban (3) from seat
frame (1). Repeat for opposite seat.
•⇐: Vehicle front
5. Partially lift seatback upright, then remove seat belt buckle (2)
from between hinge cover (1) and seat cushion side facing (3).
Repeat for LH seat.
•⇐: Vehicle front
Installation
Installation is in the reverse order of removal.
• Raise and lock both seats in the full upright position to check for abnormal noises or binding.
Seat Belt InspectionINFOID:0000000003532846
AFTER A COLLISION
WARNING:
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 col-
lision 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-tensioners
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 retractor and belt assembly (including anchor bolts) if:
• The 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).
• The seat belt was damaged in an accident. (i.e. torn webbing, bent retractor or guide).
• The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage
or distortion and repair as necessary before installing a new seat belt retractor and belt assembly.
• Anchor bolts are deformed or worn out.
• The 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.
PRELIMINARY CHECKS
1. Check the seat belt warning lamp/chime for proper operation as follows:
a. Switch ignition ON. The seat belt warning lamp should illuminate. Also, the seat belt warning chime should
sound for about seven seconds.
b. Fasten drivers seat belt. The seat belt warning lamp should go out and the chime (if sounding) should
stop.
2. If the air bag warning lamp is blinking, conduct self-diagnosis using CONSULT-II, and air bag warning
lamp. Refer to SRS-20, "
SRS Operation Check".
3. Check that the seat belt retractor and belt assembly, seat belt anchor and buckle bolts are securely
attached.
LHIA0105E
LHIA0106E

SEAT BELTS
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4. Check the shoulder seat belt guide and shoulder belt height adjuster for front seats. Ensure guide swivels
freely and that belt lays flat and does not bind in guide. Ensure height adjuster operates properly and
holds securely.
5. Check retractor operation:
a. Fully extend the seat belt webbing and check for twists, tears or other damage.
b. Allow the seat belt to retract. Ensure that belt returns smoothly and completely into the retractor. If the
seat belt does not return smoothly, wipe the inside of the loops with a clean paper cloth, because dirt built
up in the loops of the upper anchors can cause the seat belts to retract slowly.
c. Fasten the seat belt. Check the seat belt returns smoothly and completely to the retractor. If the belt does
not return smoothly, the cause may be an accumulation of dust or dirt. Use the “SEAT BELT TAPE SET”
and perform the following steps.
Inspect the front seat belt through-anchor:1. Pull the seat belt out to a length of 500 mm (19.69 in) or more.
2. Use a clip or other device to hold the seat belt at the center pillar belt opening.
3. Pass a thin wire through the through-anchor belt opening. Hold both ends of the wire and pull taut
while moving it up and down several times along the belt opening surface to remove dirt.
4. Any dirt that cannot be removed with the wire can be removed by cleaning the opening with a clean
cloth.
5. Apply tape at the point where the belt contacts the through-anchor belt opening.
NOTE:
Apply the tape so that there is no looseness or wrinkling.
6. Remove the clip holding the seat belt and check that the belt returns smoothly.
7. Repeat steps above as necessary to check the other seat belts.
SEAT BELT RETRACTOR ON-VEHICLE CHECK
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)
NOTE:
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
specific 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 seat belt retractor and belt assembly
is operating properly.
ELR Function Stationary Check
Grasp the shoulder belt and pull forward quickly. The retractor should lock and prevent the belt from extending
further.
ALR Function Stationary Check
1. 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 Retractor (ALR) mode.
3. Grasp the seat belt and try to pull out the retractor. The belt must lock and not extend any further. If neces-
sary replace the seat belt retractor and belt assembly.
4. Allow the entire length of the belt to retract to cancel the automatic locking mode.
ELR Function Moving Check
WARNING:
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 serious
personal injury. The driver and passenger must be prepared to brace themselves in the event the
retractor does not lock.
1. Fasten drivers seat belt. Buckle a passenger into the seat for the belt that is to be tested.

SC-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003533312
The Supplemental Restraint System such as “AIR 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To 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 NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Power Generation Variable Voltage Control SystemINFOID:0000000003533313
CAUTION:
For this model, the battery current sensor that is installed to the negative battery cable measures the
charging/discharging current of the battery and performs various engine controls. If an electrical com-
ponent is connected directly to the negative battery terminal, the current flowing through that compo-
nent will not be measured by the battery current sensor. This condition may cause a malfunction of
the engine control system and battery discharge may occur. Do not connect an electrical component
or ground wire directly to the battery terminal.

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< SERVICE INFORMATION >
BATTERY
BATTERY
How to Handle BatteryINFOID:0000000003533316
CAUTION:
• If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt
booster battery.
• After connecting battery cables, ensure that they are tightly clamped to battery terminals for good
contact.
• Never add distilled water through the hole used to check specific gravity.
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharging
a battery.
• The battery surface (particularly its top) should always be kept
clean and dry.
• The terminal connections should be clean and tight.
• At every routine maintenance, check the electrolyte level.
This also applies to batteries designated as “low maintenance” and
“maintenance-free”.
• When the vehicle is not going to be used over a long period of
time, disconnect the negative battery terminal.
• Check the charge condition of the battery.
Periodically check the specific gravity of the electrolyte. Keep a
close check on charge condition to prevent over-discharge.
CHECKING ELECTROLYTE LEVEL
WARNING:
Do not allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-
ing a battery, do not touch or rub your eyes until you have thoroughly washed your hands. If acid con-
tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.
MEL040F
MEL041F
MEL042F

CHARGING SYSTEM
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CHARGING SYSTEM
System DescriptionINFOID:0000000003533323
The generator 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 generator terminal 3 through
• 10A fuse (No. 30, located in the fuse and fusible link box).
Terminal 1 supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 3 detecting the input voltage. A pulse width modulated (PWM) signal
is sent from terminal 37 of the IPDM E/R to terminal 4 of the generator. The ECM determines the duty cycle of
the power generation variable voltage control system. The charging circuit is protected by the 140A fusible link
[letter a, located in the fusible link box (battery)].
The generator is grounded through the engine.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• to combination meter terminal 24 for the charge warning lamp.
Ground is supplied to terminal 13 of the combination meter through terminal 2 of the generator. With power
and ground supplied, the charge warning lamp will illuminate. When the generator is providing sufficient volt-
age with the engine running, the ground is opened and the charge warning lamp will go off. If the charge warn-
ing lamp illuminates with the engine running, a fault is indicated. The IC regulator warning function activates to
illuminate “CHARGE” warning lamp, if any of the following symptoms occur while generator is operating:
• Excessive voltage is produced.
• No voltage is produced.
POWER GENERATION VARIABLE VOLTAGE CONTROL SYSTEM
NOTE:
Power generation variable voltage control system has been adopted. By varying the voltage to the generator,
engine load due to power generation of the generator is reduced and fuel consumption is decreased.
Operation
• The battery current sensor detects the charging/discharging current of the battery. ECM judges the battery
condition based on this signal.
• ECM judges whether to control voltage according to the battery condition.
• ECM calculates the target power generation voltage according to the battery condition and sends the calcu-
lated value, through CAN lines, as the power generation command value to IPDM E/R.
• IPDM E/R converts the received power generation command value into the power generation command sig-
nal (PWM signal) and sends it to the IC regulator.
• The IC regulator performs final control over the power generation voltage.
• When there is no power generation command signal, the generator performs the normal power generation
according to the characteristic of the IC regulator.
NOTE:
When any malfunction is detected in the power generation variable voltage control system, power generation
is performed according to the characteristic of the IC regulator in the generator.
PKIB4908E

CHARGING SYSTEM
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NG >> Repair battery terminal connections.
2.CHECK FUSE AND FUSIBLE LINK
Check for blown fuses and fusible link.
OK or NG
OK >> GO TO 3.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
3.CHECK GENERATOR DRIVE BELT TENSION
Check generator drive belt tension. Refer to EM-13, "
Checking Drive Belts".
OK or NG
OK >> Inspection End.
NG >> Repair as needed.
DIAGNOSTIC PROCEDURE 1
Check Charge Warning Lamp Circuit
1.CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check terminal 2 harness connector.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 2 connection. Confirm repair by performing complete Battery/Starting/Charging
system test. Refer to "Trouble Diagnoses with Battery/Starting/Charging System Tester" .
2.CHECK CHARGE WARNING LAMP CIRCUIT
1. Disconnect E205 connector from generator.
2. Apply ground to connector E205 terminal 2 with the ignition
switch in the ON position.
OK or NG
OK >> GO TO "WORK FLOW" .
NG >> Check the following.
• Charge warning lamp (Combination meter)
• Harness for open or short between combination meter
and fuse
• Harness for open between combination meter and
generator
DIAGNOSTIC PROCEDURE 2
Check Battery Circuit
1.CHECK BATTERY CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if terminal 1 is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 1 connection. Confirm repair by performing complete Battery/Starting/Charging
system test. Refer to "Trouble Diagnoses with Battery/Starting/Charging System Tester" .
2.CHECK BATTERY CIRCUIT
Unit Power source (Power supply terminals) Fuse or fusible link
GeneratorBattery (“1” terminal) a
Battery (“3” terminal) 30
Combination meter Ignition switch ON (“2” terminal) 14
CHARGE lamp should light up.
WKIA3184E

PRECAUTIONS
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SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003533149
The Supplemental Restraint System such as “AIR 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To 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 NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for WorkINFOID:0000000003533150
• When removing or disassembling each component, be careful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.
• When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component
with a shop cloth or vinyl tape to protect it.
• Protect the removed parts with a shop cloth and keep them.
• Replace a deformed or damaged clip.
• If a part is specified as a non-reusable part, always replace it with new one.
• Be sure to tighten bolts and nuts securely to the specified torque.
• After re-installation is completed, be sure to check that each part works normally.
• Follow the steps below to clean components.
- Water soluble foul: Dip a soft cloth into lukewarm water, and wring the water out of the cloth to wipe the
fouled area.
Then rub with a soft and dry cloth.
- Oily foul: Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%), and wipe
the fouled area.
Then dip a cloth into fresh water, and wring the water out of the cloth to wipe the detergent off. Then rub with
a soft and dry cloth.
• Do not use organic solvent such as thinner, benzene, alcohol, or gasoline.
• For genuine leather seats, use a genuine leather seat cleaner.

FRONT SEAT
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REMOVAL
When removing or installing the seat trim, handle it carefully to keep dirt out and avoid damage.
CAUTION:
• Before removing the front seat, turn the ignition switch off, disconnect both battery cables and wait
at least 3 minutes.
• When checking the power seat circuit for continuity using a circuit tester, do not confuse its connec-
tor with the side air bag module connector. Such an error may cause the air bag to deploy.
• Do not drop, tilt, or bump the side air bag module while installing the seat. Always handle it with
care.
• After front side air bag module inflates, front seatback assembly must be replaced.
• Front passenger seat is equipped with an Occupant Classification System sensor and control mod-
ule. Do not disassemble front passenger seat cushion assembly or remove the trim as this will affect
the Occupant Classification System calibration.
• Always replace passenger seat cushion as an assembly.
1. Slide the seat until the four body mounting bolts are visible and a tool can be inserted.
NOTE:
• If disassembling the seat after removal, set the front/rear cushion lifters to the top position.
2. Disconnect both battery cables and wait at least 3 minutes.
3. Disconnect the side air bag module harness connector.
4. Remove the four body mounting bolts.
5. Disconnect the power seat harness connectors and remove the seat from the vehicle.
NOTE:
When removing and installing the seat, use shop cloths to protect the vehicle from damage.
INSTALLATION
• Installation is in the reverse order of removal.
Disassembly and AssemblyINFOID:0000000003533211
SEATBACK TRIM AND PAD
WARNING:
Removal of front side air bag module should only be done to allow deployment of front side air bag
module prior to disposal of seatback assembly.
NOTE:
Only complete seatback assemblies can be replaced on vehicles equipped with side air bags.
NOTE:
Be sure to set the front/rear cushion lifter to the top position.
Driver Seat
1. Remove the headrest.
1. Headrest 2. Headrest holder with multi-position
lock 3. Seatback board
4. Armrest assembly 5. Lumbar switch bezel 6. Fold flat link bar
7. Outboard reclining arm outer cover 8. Outboard reclining arm inner cover 9. Inboard reclining arm inner cove
10. Latch cover 11. LH outer leg cover 12. Outboard reclining arm inner cover
13. Seat cushion inner cover 14. Passenger seat wiring harness 15. Inner front leg cover
16. Power seat frame assembly 17. NVH assembly 18. Seat cushion front finisher
19. Outer pedestal finisher 20. Seat cushion outer finisher 21. Seat cushion assembly
22. Power seat switch escutcheon 23. Slide switch knob 24. Recliner switch knob
25. Seatback assembly 26. Headrest holder 27. Seat slide/ recline switch
28. Power lumbar switch

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CONTENTS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution for SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ......................................
2
Occupant Classification System Precaution .............2
PREPARATION ...................................................3
Special Service Tool .................................................3
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS) ...................................................................
4
SRS Configuration ....................................................4
Driver Air Bag Module ...............................................5
Front Passenger Air Bag Module ..............................5
Front Side Air Bag .....................................................5
Side Curtain Air Bag ..................................................5
Front Seat Belt Pre-tensioner with Load Limiter .......6
Occupant Classification System (OCS) ....................6
Direct-connect SRS Component Connectors ............6
TROUBLE DIAGNOSIS ......................................8
Trouble Diagnosis Introduction .................................8
SRS Component Parts Location .............................10
Schematic ...............................................................11
Wiring Diagram - SRS - ...........................................12
CONSULT-II Function (AIR BAG) ...........................17
CONSULT-II Function .............................................18
Self-Diagnosis Function (Without CONSULT-II) .....19
SRS Operation Check .............................................20
Trouble Diagnosis with CONSULT-II ......................21
Trouble Diagnosis without CONSULT-II .................28
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn Off ...................................................
32
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn On ...................................................
33
DRIVER AIR BAG MODULE ............................35
Removal and Installation .........................................35
SPIRAL CABLE ................................................37
Removal and Installation .........................................37
FRONT PASSENGER AIR BAG MODULE ......39
Removal and Installation .........................................39
SIDE CURTAIN AIR BAG MODULE ................42
Removal and Installation .........................................42
CRASH ZONE SENSOR ...................................44
Removal and Installation .........................................44
SIDE AIR BAG (SATELLITE) SENSOR ...........45
Removal and Installation .........................................45
FRONT SEAT BELT PRE-TENSIONER ...........46
Removal and Installation .........................................46
DIAGNOSIS SENSOR UNIT .............................47
Removal and Installation .........................................47
OCCUPANT CLASSIFICATION SYSTEM
CONTROL UNIT ................................................
48
Removal and Installation .........................................48
COLLISION DIAGNOSIS ..................................49
For Frontal Collision ................................................49
For Side and Rollover Collision ...............................50