Controller Area Network (Can) - Aston Martin V8 Vantage Workshop Manual

The symbol for the screen is an oval with the wires that are
to be screened inside it. The letters 'SCR' define the screen.
Wire No.
Colour
MAB (Defines Screened)
Size

Controller Area Network (CAN)

Controller Area Network (CAN) is the wiring between
intelligent modules of the vehicle. This wiring carries the
electronic data around the vehicle allowing the various
modules and components to interrogate the network and
read their specific data signals.
There are 2 different speeds of network.
Low speed - Transmits at 125,000 bits per second. Mainly
for body controller systems such as seats and doors
High speed - Transmits at 500,000 bits per second. Mainly
for engine management and powertrain associated systems
such as ABS.
All wiring in the CAN is twisted. The twisted wires always
consist of one wire with a black trace in it for the negative
side and one with a brown trace in it for the positive.
High Speed CAN wire
Low Speed CAN wire
The symbol below shows a module or a component
connector with the pin numbers that have CAN wires
coming from them.
October 2005
205 U MABC 05
'CAN LS+' - Low speed CAN positive side
'CAN LS-' - Low speed CAN Negative Side
To aid identification of the different speed CAN's in the
vehicle different colours of wire have been used, e.g. the
Low Speed Volcano is GB twisted with GN, the High Speed
Volcano is RB twisted with RN.
There is attached on a separate page a list for wire colour
abbreviations and what colour they refer to.
Workshop Manual
Wiring and Circuit Protection (18.01)
Electric Distribution/Electronic Control (18.00)
This naming convention also applies to the High Speed
CAN network.
18-1-5