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SUPPLEMENTARY RESTRAINT SYSTEM (SRS)
14
ON VEHICLE REPAIR
ECU
REMOVAL
1. Disconnect the battery connections.
2. Remove the floor console assembly.
(For proce-
dure refer floor console removal procedure in
body section).
3. Disconnect the electrical connection from the air
bag ECU.
4. Loosen and remove the mounting screws
(Two
from front and one from the rear end)
and remove
the ECU from the vehicle.
FITMENT
For fitment follow reverse procedure of removal.
NOTE
While assembly of ECU reconnect the earthing cable
with the mounting screw.
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.
11.1.6.2.2 SENSORS
! 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.
A. FRONT IMPACT SENSOR
(FIS)
These sensors are positioned well forward in the
crush zone that will react almost instantly to the sud-
den 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”
function to
ensure that the SRS fires only when there is a physi-
cal crash event of significant severity.