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SUPPLEMENTARY RESTRAINT SYSTEM (SRS)
5
SRS
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 ser-
viced 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 trim components –
(Passenger airbag, SRS
ECU, front impact sensing unit)
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 com-
pounds. Do not dismantle burn or bring into con-
tact with electricity.
2. Do not expose an airbag module 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 spe-
cial instructions to be safe. All units shall be acti-
vated (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 de-
signed 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 sec-
onds 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 opera-
tion in the event of a collision. Carefully inspect
SRS components before installation. Do not in-
stall a part that shows signs of being dropped or
improperly handled, such as dents, cracks or de-
formation. Dropped modules may get damaged.
In such cases contact the supplier for further ac-
tion.
3. Ensure SRS components are not contaminated
with oil, grease, detergent or water. It is essential
that SRS components are fitted using the rec-
ommended torques.
4. Do not install used SRS components from an-
other 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 prob-
lems 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, 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.
10.Donot 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 spe-
cific bag-folding pattern could be altered from its
original optimized design.