Land Rover Range Rover Body Repair Rover Manual

							75SUPPLEMENTARY RESTRAINT SYSTEM NEW RANGE ROVER
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DESCRIPTION AND OPERATION OPERATION
The airbag supplementary restraint system (SRS) is a
safety device which, when used in conjunction with
the seat belt, is designed to protect the driver and
front passenger in the event of a frontal collision.
The diagnostic control unit (DCU) is able to distinguish
between rough road conditions and a frontal collision.
If the DCU detects a frontal collision of sufficient
severity, it sends a fire signal to the airbag module
initiators. The initiators ignite tablets of sodium azide
which generate a large amount of Nitrogen gas
leading to airbag inflation in approximately 30
milli-seconds.
As the occupant moves into the fully inflated airbag,
the nitrogen gas discharges from vent holes in the
rear of the airbag. As the airbag deflates, it provide
progressive deceleration for the occupant and
reduces the risk of injuries. The process from airbag
initiation to deflation is completed in approximately 0.3
seconds.
WARNING: All the airbag system
components, including the wiring harness,
MUST be renewed after airbag
deployment.SRS warning light
The airbag system carries out a system check every
time the ignition is switched to position 2. During the
system check, the instrument pack warning light is
illuminated to provide a bulb check. The warning lamp
is extinguished when the system check is complete,
after about 5 seconds.
If a system fault is found during the initial system
check or subsequently during driving, the warning light
will illuminate, indicating to the driver that there is a
fault with the airbag system. With the warning light on,
the airbag system will not operate in the event of a
frontal collision. The DCU records system faults in an
internal memory. The memory can be interrogated
using TestBook via the diagnostic socket located on
the passenger side fascia closing panel. 
						

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PRECAUTIONS GENERAL PRECAUTIONS
Making the system safe
Before commencing repair work on any airbag
components:
·Remove the key from the starter switch.
·Disconnect both battery leads, earth lead
first.
·Wait 10 minutes for DCU back-up power
circuit to discharge.Care Points
WARNING: The airbag module contains
Sodium Azide which is poisonous and
extremely flammable. Contact with water,
acid or heavy metals may produce harmful or
explosive compounds. Do not dismantle,
incinerate or bring into contact with electricity. 
						

							75SUPPLEMENTARY RESTRAINT SYSTEM NEW RANGE ROVER
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PRECAUTIONS NEVER
·Drop any airbag system component.
NOTE: The airbag DCU is a shock
sensitive device and must be handled with
extreme care.
·Wrap arms around an airbag module.
·Attach anything to the airbag cover.
·Attempt to repair any component.
·Apply electrical power to a component
unless instructed to do so by an approved
test procedure.
·Transport airbag modules in the passenger
compartment of a car. Use the luggage
compartment.
·Install any airbag component that shows
signs of being dropped or improperly
handled, such as dents, cracks or
deformation.
·Install used airbag components from
another vehicle. When repairing an airbag
system, use only genuine new parts.ALWAYS
·Carefully inspect any airbag component
before installation.
·Check airbag harness is correctly routed.
·Check airbag connectors are fully mated
and latched after completion of work.
Airbag handling and storage
·Do not try to dismantle the airbag module.
It has NO serviceable parts. Once an
airbag has been deployed, it cannot be
repaired or reused.
·Be careful that the airbag module receives
no strong shocks, it could deploy.
·Special bolts are necessary for installing
the airbag module. Do not use other bolts.
For temporary storage of the airbag module during
service, observe the following precautions.
·Always keep components dry.
·Always carry the airbag module with the
pad surface face up.
·Store the removed airbag module with the
pad surface face up.
·Do not allow anything to rest on the airbag
module.
·Place the airbag module in the designated
storage area. 
						

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PRECAUTIONS ·If no designated storage area is available,
then the luggage compartment of the
vehicle should be used. Always lock the
luggage compartment when an airbag
module is stored in it and inform the
workshop supervisor.
WARNING: If the airbag module is
improperly stored face down, accidental
deployment could propel the unit with
enough force to cause serious injury.
·Store the removed airbag assembly on a
secure flat surface away from any electrical
equipment or high heat source (exceeding
85Ê C/185Ê F) and free of any oil, grease,
detergent of water.
CAUTION: Improper handling of storage
can internally damage the airbag module,
making it inoperative. If you suspect the
airbag module has been damaged, install a new
unit and refer to the Deployment/Disposal
Procedures for disposal of the damaged airbag.
Overnight storage
Airbag modules are classed as explosive devices and
as such must be stored in an approved secure steel
cabinet which has been registered by the local
authority.CRASH SENSOR INSPECTION - DISTRIBUTED
SRS SYSTEM ONLY
1.After any degree of front body damage, inspect
both front crash sensors. Replace a sensor if
there are any signs of dents, cracks or
deformation.
2.Ensure the sensors are installed correctly. There
must be no gap between the sensor and body of
the vehicle. Use the fixing screws supplied with
the sensor and tighten to the correct torque.
Tighten front sensor fixing before rear sensor
fixing.
CAUTION: Take extra care when painting
or doing body work in the vicinity of the
sensors. Avoid direct exposure of the
sensors or harness to heat guns, welding or
spraying equipment. 
						

							75SUPPLEMENTARY RESTRAINT SYSTEM NEW RANGE ROVER
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PRECAUTIONS WIRING AND CONNECTORS
·Never attempt to modify, splice or repair
the airbag wiring. Never install electronic
equipment such as; a mobile telephone,
two-way radio or in-car entertainment
system in such a way that it interferes
electrically with the airbag wiring.
·Always ensure airbag wiring is routed
correctly. Be careful to avoid trapping or
pinching the airbag wiring. Look for
possible points of chaffing.
·Always use specified earth fixings
tightened to the correct torque. Poor
earthing can cause intermittent problems
that are difficult to diagnose.
·Ensure all airbag harness connectors are
mated correctly and securely fastened. Do
not leave the connectors hanging loose. 
						

							SUPPLEMENTARY RESTRAINT SYSTEM
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PRECAUTIONS WARNING LABELS
A combination of symbols/icons are displayed (either
in a suitable, prominent position or attached to the
component itself) to indicate:
·The need for caution when working in close
proximity to SRS components.
·The publication where suitable reference
and advice can be found (usually Repair
Manual or Owners Handbook).
NOTE: It is imperative that before any work
is undertaken on the SRS system that the
appropriate publication is read and
understood.
The following list indicates current locations for
warning lables. Exact positions may vary dependent
on legislation and market trends.
1.Bonnet locking platform. Refer to Owners
Handbook for information on the SRS system.
2.Drivers and passengers sun visor. Refer toOwners Handbook for information on the SRS
system.
3.End of fascia, passengers side (not all markets).
Do not use rear facing child seat in passenger
seat of vehicles fitted with passenger airbag.
4.Rotary coupler. Ensure wheels are positioned in
straight ahead position before removal and
refitting. Do not rotate mechanism. Refer to the
Repair Manual for information on the airbag
system. 
						

							75SUPPLEMENTARY RESTRAINT SYSTEM NEW RANGE ROVER
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PRECAUTIONS 5.Airbag modules
A- Land Rover bar code. The code number(s) must be
recorded if the airbag module is to be replaced.
B- Warning, the use of gas generators is permitted
only for occupant restraint systems in vehicles fitted
with airbags. Not repairable. Handling is permitted
only by authorized personnel. Do not use any live
electrical test equipment. Do not open, remove or
install in another vehicle. Risk of malfunction and
personal injury. Upon deployment, an airbag unit
which is not properly mounted may become a
dangerous projectile. Refer to Repair Manual for
further instructions.
C- Danger Poison. Keep out of reach of children.
Contains sodium azide and sodium nitrate. Contents
are poisonous and extremely flammable. Contact with
acid or heavy metals may produce toxic gases.VEHICLE RECOVERY
Towing - airbag not deployed
Normal towing procedures are unlikely to cause an
airbag to deploy. However, as a precaution, switch the
ignition off and then disconnect both battery leads.
Disconnect the negative lead first.
Towing - airbag deployed
Once the drivers airbag has been deployed the
vehicle must have a front suspended tow. However,
as a precaution, switch the ignition off and then
disconnect both battery leads. Disconnect the
negative - lead first. 
						

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PRECAUTIONS AIRBAG MANUAL DEPLOYMENT
If a vehicle is to be scrapped and contains an
undeployed airbag module, the module must be
manually deployed. This operation should only be
carried out using the following recommended manual
deployment procedure.
Before deployment is started, the deployment tool self
test should be carried out.
Deployment tool SMD 4082/1 self test procedure
1.Insert blue and yellow connectors of tool lead
into corresponding sockets on face of tool.
2.Connect crocodile clips of second tool lead to
battery, red to positive and black to negative.
3.Red READY light should illuminate.
4.Press and hold both operating buttons.
5.Green DEFECTIVE light should illuminate.
6.Release both operating buttons.
7.Red READY light should illuminate.
8.Disconnect tool from battery.
9.Disconnect blue and yellow connectors from tool
face sockets.
10.Self test now complete.Deployment with module fitted to vehicle
These guidelines are written to aid authorised
personnel to carry out the safe disposal of the airbag
module when fitted to the vehicle.
WARNING: Only use the Land Rover
approved deployment equipment. Deploy
airbag modules in a well ventilated,
designated area. Ensure airbag module is not
damaged or ruptured before deploying.
Drivers airbag module
1.Carry out deployment tool self test.
2.Remove drivers side fascia closing panel.
See
CHASSIS AND BODY, Repair.
3.Release airbag multiplug from fascia and
disconnect multiplug. 
						

							75SUPPLEMENTARY RESTRAINT SYSTEM NEW RANGE ROVER
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PRECAUTIONS
WARNING: Ensure tool SMD 4082/1 is not
connected to battery.
4.Connect flylead SMD 4082/5 to airbag
connector.
5.Connect flylead SMD 4082/5 to tool SMD
4082/1.
WARNING: Ensure airbag module is
secure within steering wheel.
6.Connect tool SMD 4082/1 to battery.
WARNING: Ensure all personnel are
standing at least 15 metres away from
vehicle.
7.Press both operating buttons to deploy airbag
module.
8.DO NOT return to airbag module for 30 minutes.
9.Using gloves and face mask, remove airbag
module from steering wheel, place airbag
module in plastic bag and seal bag.
10.Transport deployed airbag module to designated
area for incineration.
NOTE: DO NOT transport airbag module in
the vehicle passenger compartment.
11.Scrap all remaining parts of airbag system. DO
NOT re-use or salvage any parts of the airbag
system, including steering wheel or steering
column. 
						

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PRECAUTIONS Passengers airbag module
1.Carry out deployment tool self test.
2.Remove glove box assembly.
See CHASSIS
AND BODY, Repair.
3.Release airbag connector from fascia and
disconnect multiplug.
WARNING: Ensure tool SMD 4982/1 is not
connected to battery.
4.Connect flylead SMD 4082/5 to harness
connector.
5.Connect flylead SMD 4082/5 to tool SMD
4082/1.
WARNING: Ensure airbag module is
secure within fascia.
6.Connect tool SMD 4082/1 to battery.
WARNING: Ensure all personnel are
standing at least 15 metres away from
vehicle.