Audi A6´05 323 Service page 41

Data exchange between the seat occupied
recognition control unit and other vehicle systems
is effected via the airbag control unit (by means of
the LIN bus). The airbag control unit is thus the
master control unit and the seat occupied
recognition control unit (J706) the slave. The
Diagnosis function is effected via the airbag
control unit.
The positions of the installed components are fixed
and must never be changed.
This also applies to individual system components.
The system, comprising control unit, pressure
sensor, pressure mat and seat cushion, is calibrated
individually for each seat during production.
The connecting cable beween the control unit and
pressure sensor is thus sealed at both ends in order
to emphasize that they are not to be disconnected.
Likewise, the pressure mat is connected to the foam
by means of a clip, which cannot be removed
without distroying it.
All parts must be replaced together in the event of a
defective component. Pre-calibrated Service kits are
available for this.
Components which are not installed correctly
can cause malfunctions and the entire seat
occupied recognition system can no longer operate
reliably.
Characteristic maps in the control unit electronics
ensure that the ageing of individual components is
taken into account.
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