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SUPPLEMENTARY RESTRAINT SYSTEM (SRS)
5
11.1.4. SAFETY PRECAUTIONS
NOTE
DTC’S are the most important source of
information when troubleshooting. When
troubleshooting the SRS, always inspect DTC’S
before disconnecting the battery.
The SRS system contains components which
could be potentially hazardous to the technician if
not serviced and handled correctly. The following
guidelines are intended to alert the technician to
potential sources of danger and emphasize the
importance of ensuring the good condition of SRS
components fitted to the vehicle.
It should be noted that these precautions are not
restricted to operations performed when servicing
the SRS system; the same care should be
exercised when working on ancillary systems and
components located in the vicinity of the SRS
components; these include but are not limited to:
 Steering system – (steering wheel airbag)
 Body, seats and trim components – (Passenger
airbag, seatbelt pre-tensioners, SRS ECU, front
impact sensing unit, inflatable curtain, Side
remote sensors, Side airbags and passenger
air bag deactivation switch)
 Electrical system components – (SRS
harnesses etc.)
!! WARNING
1. The airbag modules contain extremely
flammable components. Contact with water,
acid or heavy metals may produce harmful or
explosive compounds. Do not dismantle burn or
bring into contact with electricity.
2. Do not expose an airbag module or seatbelt
pre-tensioner to heat.
3. The inflator is intended not to fire below the
threshold current. To avoid inadvertent
triggering of the airbag, NEVER apply a current
through the squib except with the specified test
equipment and procedures.
4. Never dispose the airbag module undeployed
without proper instructions as this may result in
possible injury. All deployments must follow
special safety instructions. All units should be
activated (deployed) prior to disposal.
5. The airbag modules or their components must
not be adapted or installed in any other vehicle
other than the specific vehicle for which they
are designed and manufactured. Any attempt to
adapt or install airbag modules or their
components in any other vehicle can result in
personal injury to the occupants in the event of
accidents.
6. The system has back-up power for about 30
seconds after the battery is disconnected. Wait
for at least ONE minute after disconnecting the
battery before servicing the vehicle to prevent
accidental deployment and personal injury.
GENERAL PRECAUTIONS
The following precautions have to be taken while
working on SRS system.
1. When removing, testing or installing an airbag
module, do not lean directly over it. Always
refer SRS component testing precautions
2. In order to assure system integrity, it is
essential that the SRS system is regularly
checked and maintained so that it is ready for
effective operation in the event of a collision.
Carefully inspect SRS components before
installation. Do not install a part that shows
signs of being dropped or improperly handled,
such as dents, cracks or deformation. Dropped
modules may get damaged. In such cases
contact the supplier for further action.
3. Ensure SRS components are not contaminated
with oil, grease, detergent or water. It is
essential that SRS components are fitted using
the recommended torques.
4. Do not install used SRS components from
another vehicle. When replacing SRS system,
only use TATA authorized genuine new parts.
5. It is essential that SRS components are fitted
using the recommended torques. Always use
specified earth fixings tightened to the correct
torque. Poor earthing can cause intermittent
problems that are difficult to diagnose.
6. Do not cut, drill, braze or solder the gas
generator assembly.
7. Do not allow the air bag module assemblies to
come into contact with electrical current.
8. Never hammer on any SRS component - it
might get damaged internally.
9. Do not carry the airbag or pre-tensioner
module, with the cable assembly connected -
long cables can pick up Electrostatic Charge
particularly if dragged on the floor and could
lead to deployment of airbag.
not attempt to refold the bag into the cover.
Deployment protection may be compromised or
injury may be induced. This is because foreign
objects could enter the bag, or the vehicle