SRS
15
Removal
1. Disconnect battery and wait for 2 minutes..
2. Remove the driver air bag; disconnect the
driver air bag connector. To disconnect first we
should lift the yellow lock on connector and
then pull the connector out.
3. Disconnect the connector of steering wheel
switches and horn connections. Remove the
steering wheel nacelle and disconnect the
connector coming from vehicle level wiring
harness to clock spring.
4. Unscrew the four mounting nuts of clock spring
and take out the clock spring.
Installation
1. Assemble new clock spring on the combi
switch and break the red locking tab on the
clock spring and then assemble the steering
wheel. Please ensure that serial number of
clock spring being fitted on the vehicle is
recorded and information is sent back to the
plant for updating the vehicle record.
2. Reconnect all the connections. Make sure
that vehicle wiring harness connector in fully
inserted in to clock spring connector and
locked. Similarly insert the driver air bag
connector fully and push the yellow locking
tab.
3. Reconnect battery.
4. Check the working of horn, steering wheel
switches also ensure that air bag warning
lamp on instrument cluster goes off.
5. If air bag lamp is continuously on then
connect a diagnostic tool and see the faults.
For driver air bag we can have two faults:
a) Driver air bag resistance too low
b) Driver air bag resistance too high
For fault a) we need to ensure that vehicle wiring
harness connector is properly inserted into clock
spring connector. Clock spring connector has
internal shorting link which opens after vehicle
wiring harness connector is fully inserted and
locked. Other possibility for this fault is that cable
coming from Air bag control unit is pinched in the
vehicle.
For fault b) Ensure that driver air bag connector is
fully inserted and lock is pushed. This fault can
also come if the clock spring flexible PCB is cut
due to over strain. This can cause if the clock
spring is not properly centered (turn wise) during
fitment.
