Service & Repair Manual

24-192
Data transfer between Engine Control
Module (ECM) and CAN capable control
modules, checking
Notes:
Data exchange between individual control
modules occurs via a bus system.
The term "CAN-bus" refers to a system that
transports and distributes data.
The wire connections between the control
modules, via which data is transferred, are
referred to as data wires.
Data is transferred to the connected control
modules serially (one after the other) via these
data wires (i.e. engine speed, accelerator
position).
Checking bus system
The DTC table suggested checking the data
exchange between the Engine Control Module
(ECM) and CAN capable control modules.
-
Connect VAS5051 tester or VAG1551 scan tool
and select the control module for engine
electronics using "address word" 01 Page 01-
Pa
g
e 36 of 44Additional si
g
nals, testin
g
11/23/2002htt
p
://127.0.0.1:8080/audi/servlet/Dis
p
la
y
?action=Goto&t
yp
e=re
p
air&id=AUDI.B5.FU05.24.6