ZEST/BOLT

SRS

10.2.5 SRS WARNING LAMP

The “AIR BAG” warning lamp is located in the

instrument cluster and controlled by SRS ECU.A

warning indicator in instrument cluster will alert to

any malfunction of the airbag SRS. Under normal

/fault free condition, the air bag warning light

comes on for approximately 3 seconds and goes

off with ignition ON.

The vehicle should always be checked for airbag

SRS if any of the following symptoms occurs:



The warning indicator fails to illuminate for

3sec when ignition switch is turned ON.



The warning indicator remains ON and fails to

extinguish within approximately 3 seconds

after ignition switch is turned ON.



The warning indicator illuminates after the

engine is started or while the vehicle is

running.

10.2.6 SEAT BELT PRETENSIONERS WITH

LOADLIMITERS

The seat belt pre tensioners activate in

conjunction with the SRS and provide additional

protection in the event of frontal impact of the

vehicle with sufficient severity.

The seat belts for both front seating positions are

equipped with pre-tensioning devices that are

designed to remove any slack from the seat belts

in the event of a collision. These devices improve

the performance of the seat belt system by

assuring that the belt is tight around the occupant

in a collision.

Along with pre-tensioning devices, the seat belts

are also provided with load limiters which ensure

that the occupant is optimally loaded by the seat

belt. The load limiting devices are only used in

conjunction with airbags.

The airbag SRS warning indicator on the

instrument cluster will alert you to any malfunction

of seat belt pre-tensioner.

NOTE:

After any impact, always check the seat

belts and pre-tensioners and replace if necessary.

(a) Pre-tensioner device

Pretensioner device is mounted in the retractor

unit.

The main function of a Pre-tensioner is to remove

slack from the belt in the event of an accident to

reduce forward movement of the occupant. The

Pre-tensioner unit essentially consists of a ball

cage comprising of a tube of steel balls

surrounding a toothed wheel. The wheel is

mounted on the belt-webbing spool.

When the ECU senses a crash, depending on the

crash severity, it sends a “fire” signal to the squib

in the belt Pre-tensioner. The firing of the squib

causes displacement of the balls in the tube. The

movement of the balls causes rotation of the

toothed wheel, which in turn rotates the webbing

spool and removes the slack from the belt.