12
The data bus diagnostic interface J533
implements the exchange of data between
the various data bus systems.
1a The terminal 15 information is
transmitted by the entry and start
authorisation button E408 via a discrete
wire to the entry and start authorisation
control unit J518.
or
1b Transmission from terminal 15 to the
entry and start authorisation control unit
J518 is effected via a discrete wire by
actuating the entry and start
authorisation switch E415.
Data exchange
Example: Transmission from terminal 15
Control Units
To do so, it transmits data with a short
propagation time from one data bus system to
the other.
In this process, not all data from one bus
system are transmitted to the next, but rather
only the data required by the system
concerned.
2 The entry and start authorisation control
unit relays the information via the
convenience CAN to the data bus
diagnostic interface.
3 The information is read in by the data bus
diagnostic interface J533 and transmitted
to the drive system CAN, dash panel insert
CAN (control unit with display in dash panel
insert J285) and MOST bus.
The information is thus available to all
connected control units.
J285
E408
J533
SSP287_006
E415
J518
Control units
connected to
MOST bus
Control units
connected to drive system CAN
Control units
connected to
convenience CAN
