E65/E66 Sub-Bus Systems

E65 Sub-Bus Systems

In addition to the bus systems, sub-bus systems are also used. These are subordinate serial bus systems. Their functions correspond to those of the previous I/K bus.
The following sub-bus systems are fitted on the E65/E66:

- Driver's door P bus (driver's door switch block periphery bus)
- Engine Low CAN (engine Low CAN bus; link between DME a Valvetronic control unit)
- Telcommander CAN (Phone board CAN)
- M bus (air-conditioning motor bus)
- DWA K bus (alarm system body bus)
- BSD interface (bit-serial data interface)

Driver's Door P-Bus

Driver's Door P-Bus:

The driver's door P bus passes the signals from the driver's-door switch block to the door module (e.g. functions window lift, child lock-out request, Sun shade).

Engine LoCAN

Engine LoCAN:

The Engine LoCAN enables communication between the DME and the Valvetronic control unit.

TelCommander CAN

TelCommander CAN:

The TelCommander CAN provides the link to the telephone control panel module. It is a two-wire cable.

M-BUS







The M bus enables control of the various motors for the air conditioning system.

DWA K-BUS







The functions of the alarm system are split between the two control units (DWA and SINE). The alarm system K bus enables communication between those two control units.

BSD







Communication via the BSD enables adjustment of the battery charging voltage, and communication between the DME and oil quality sensor for example.