HEXA

SUPPLEMENTARY RESTRAINT SYSTEM (SRS)

SRS ECU FITMENT

For fitment follow reverse procedure of removal.

PRECAUTIONS



If the ECU is accidentally dropped on the con-

crete floor from the height of more than 1m then

that ECU should not be used on a vehicle.



ECU should be transported with proper packing

material.



Always store the ECU in dry place.



A person handling any restraints module assem-

bly shall have to wear ESD

(electro-static dis-

charge)

straps to reduce any risk of inadvertent

deployment.

NOTE:

After removal / fitment of components – SRS ECU,

Sensors, DAB, PAB, RPLL, connect service tool and

check for DTCs to ensure the system behavior as

expected.

II SENSORS



FRONT IMPACT SENSOR

(FIS)

These sensors are positioned well forward in the

crumple zone so that, it will react almost instantly to

the sudden deceleration that results from the front

impact. They send signal to the SRS ECU and help

in firing the restraints in the minimum possible time.

These sensors are equipped with

“Safe Mode”

func-

tion to ensure that the SRS fires only when there is a

physical crash event of significant severity.

MAKE: BOSCH

SUPPLY VOLTAGE RANGE: 5.25 V to 16.5

CAUTION

Do not attempt to check or replace any impact sen-

sor unless the vehicle battery is disconnected. This

renders the sensing system "powered OFF". Wait for

at least 10 minutes after the battery is disconnected

and then start the relevant work/repair.

LOCATION

Front impact sensor is mounted on the first body

mount bracket.

CONNECTOR

PINOUTS

PIN NO.

PIN DESCRIPTION

Signal

Ground

SUPPLY VOLTAGE LEVEL

Minimum

5.25 V

Nominal

6.20 V

Maximum

16.5 V