Volkswagen The Golf 2004 Service Training page 10

Introduction
The control units in the drivetrain CAN data bus
Control units and fitting locations
The adjacent illustration shows the control units
of the convenience CAN data bus and
associated fitting locations.
The speed of data transfer is 100 kbit/s.
The data is transferred via the orange/green
CAN high wire and orange/brown
CAN low wire.
To guarantee data transfer without conflict or
interference, the CAN wires are twisted together.
10
Steering column electronics control unit J527,
on steering column switch
Convenience system central control unit
J393,
on right beneath dash panel,
behind glove compartment
Climatronic control unit J255,
in centre console