Control Units For Convenience Can Data Bus - Volkswagen Passat 2006 Service Training

Data Bus Systems

Control Units for Convenience CAN Data Bus

Control units and locations
The adjacent diagram shows the control units
that are involved in the convenience CAN data
bus communication as well as their locations.
The data transfer speed is 100 kbit/s. The transfer
occurs via the CAN high cable and the CAN low
cable. The CAN cables are twisted together for
secure data transfer.
The convenience CAN data bus is suitable for
use with a single cable – data transfer would still
be possible if one CAN cable fails.
10
Front passenger seat
position with memory
J521,
under passenger seat
Door control units J386, J387, J388, J389,
in the doors
Convenience system central control unit J393,
on right under dash panel
Climatronic control unit J255,
in middle of dash panel