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SUPPLEMENTARY RESTRAINT SYSTEM (SRS)
6
5. SRS POST ACCIDENT PROCEDURE:
A. The complete airbag system consists of
following components. Those cannot be
serviced/repaired, hence should be replaced
in case of any damage/deployment
irrespective of ‘if found ok’.
a) Driver airbag
b) Passenger airbag
c) Seat belt assembly
d) Front impact sensors
e) Side impact sensors
f) Side airbags
g) Side Curtain airbags (Inflatable Curtains)
h) Wiring harnesses
i) SRS ECU
j) Clock spring
k) Passenger airbag deactivation switch
B. If Frontal Airbags, seat belt pretensioners
are deployed during collision, following
components must be replaced irrespective
of ‘if found ok’.
a) Driver airbag
b) Passenger airbag
c) Front Seat belt assembly RH & LH
d) Front impact sensors -LH & RH
e) Cockpit (with PAB provision & wiring
harness)
f) Wiring harness
g) SRS ECU
h) Clock spring
C. If Side Airbags, curtain airbags are deployed
during collision, following components must
be replaced
irrespective of ‘if found ok’
.
a) Deployed Side airbag(s)
b) Deployed Curtain Airbag(s)
c) Front Seat belt assembly for the side(s)
that deployed
d) Side impact sensor(s) for the side that
deployed
e) SRS ECU
f) Wiring harness
D. In case of Curtain Airbag deployment
following components also needs to be
replaced.
a) Roof trim
b) A –pillar trim
c) B – pillar upper and lower trims
d) C – pillar trim
e) Rear grab handle
f) Front grab handle
g) All related trim clips
h) Sun visor
E.
After any type of vehicle accident, thoroughly
inspect all the airbag system components for
any damage or deformation. Replace
components as required. Thorough inspection
of their mounting locations is also strongly
recommended after any accident.
F.
If any damage or deformation is observed on
any airbag system components, these
components
MUST be replaced
even if they
are not deployed/ fired in the accident and are
showing healthy status when checked.
G.
Special attention should be paid to mounting
surfaces and mounting brackets mainly for SRS
ECU, Front impact sensors and Side impact
sensors as they are extremely critical for
performance of the system. If these cannot be
repaired to their original condition, the original
panel(s)
MUST be replaced
.
H.
In case of damage to SRS wiring
harness/wires, they must not be repaired but
replaced.
I.
If steering wheel and steering column are
deformed or if the steering column is collapsed
in an accident replace these components.
J.
The accident Vehicle should be inspected to
identify component deformation or structural
deformations, damages for repair or
replacement. e.g. Vehicle front, side, rear
structure, seats, underbody components etc.
K.
Check for DTC’s using diagnostic tool and
troubleshoot to clear all the DTC’s detected.
!! WARNING
‘If the SRS warning indicator in the instrument
cluster illuminates continuously, it means there is a
malfunction in the system, vehicle needs to be
diagnosed then take the vehicle to nearest TATA
Authorized Service Center’.