engine AUDI A4 2001 B5 / 1.G 01V Transmission Torque Tube Remove And Install Workshop Manual

01-263


CAN-bus, function

Bus:
The term "bus" refers to a system that transports
and distributes data.

CAN:
The Controller Area Network is a bus system that
uses two wires. These are called bus wires. Data
is transferred to the connected control modules
serial (one after the other) across the bus wires.
These control modules communicate with each
other via the CAN-bus.

Overview of power train data-BUS
1 - Transmission Control Module (TCM) -J217-
2 - Driver for BUS
3 - Motronic Engine Control Module (ECM) -J220-
4 - Driver for BUS
5 - Termination resistance
Pa
ge 1 of 10 CAN-
bus, function
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