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Key switch for
disabling airbag,
front passenger side E224
A key switch as shown in the adjacent block
diagram is used to deactivate the front passenger
airbag. Deactivation of the front passenger airbag
is indicated by the airbag warning lamp, front
passenger side, off (K145)
(PASSENGER AIRBAG OFF) lighting up.
The layout of the four resistors, of which two are
always connected in series, ensures correct
detection of the switch position.
If a faulty key switch is detected by the Diagnosis,
an entry is made in the fault memory. This is also
indicated by a flashing airbag, front passenger side,
off warning lamp.
Seat belts and belt tensioners
N153 and N154
The proven compact tensioners are used for the
front seats in the Audi A6.
The electrically triggered tensioner units operate
according to the ”ball and gearwheel” principle.
The belt tensioner units are triggered before the
front airbags.
To prevent passengers from being subjected to
excessive loads, the automatic belt systems are
equipped with a belt force limiter.
At a certain load level, the force limiter gives and
makes the belt longer, thus permitting the
passenger to sink into the airbag, which has
already opened.
In the event of a side crash with side airbag
actuation, the corresponding belt tensioner is
also triggered.
R1
R2
R3
R4
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