Self-Study Program

42
Airbag control unit J234
A self-test is performed every time the
ignition is switched on. The system checks to
see whether the connected peripherals
actually match the coded equipment version.
The deceleration curve caused in a collision is
detected by the control unit, which then
decides which of the different airbag systems
to trigger. If the deceleration is below the
reference values set in the control unit then
the airbags are not triggered.
Side airbag sensor G179/G180
In order to accurately determine the lateral
deceleration in an accident the vehicle is
equipped with a lateral acceleration sensor in
the B-pillar on both sides. They are connected
to the airbag control unit J234 and convey the
size and direction of the deceleration.
The plausibility of the sensor signal has to be
checked before the output stage of the airbag
in question is activated.
SSP239_041
SSP239_042
For further information refer to SSP 213,
page 9.
Occupant protection
Handbrake lever