SRS
14
10.6.2 Clock spring
Before clock spring removal; please make
note of following information:
1. Clock spring is used for making electrical
connections between vehicle level wiring
harness (stationary part) and Driver air bag,
steering wheel switches (rotating parts
mounted on steering wheel)
2. Inside the clock spring there is a flexible PCB
(printed circuit board) which winds and
unwinds as we rotate the steering wheel.
3. Steering wheel rotates 1.75 turns on either
side i.e. 3.5 turns lock to lock. Clock spring can
rotate 2 turns on one side and 3 turns on other
side i.e. during normal working clock spring
has at least 0.25 turns on one side additional
for safety of clock spring.
4. While removing the suspected or defective
clock spring from vehicle we need to ensure
that wheels are in straight ahead condition.
This can be achieved by rotating steering
wheel 1.75 turns from one lock position. It also
should be ensured visually that front wheels
are in straight ahead condition.
