
BODY ELECTRICAL - MULTIPLEX COMMUNICATION
277BE102
241BE168
240BE09
240BE11
ECU
AV Single Wire
ECU
Single Wire Voltage Drive
240BE12
ECU
+
-
Twisted-pair Wire
+
-
ECU
Differential Voltage Drive
BE-5
2. Communication Wire
A twisted-pair wire is used for CAN and AVC-LAN communication. A single, AV (Automobile Vinyl) wire
is used for BEAN* communication.
*: The BEAN is used in the body electrical system of the ’06 Camry and some other TOYOTA models, but
is not used on the ’07 Camry Hybrid model.
Communication Wire
Outline
Twisted-pair Wire for CAN
This communication wire is a pair of twisted lines.
Communication is driven by applying 1.5 to 2.5 V and 2.5
to 3.5 V of voltage to the two lines in order to send a single
signal.
This system, which is called a “Differential Voltage Drive”,
reduces noise.
Twisted-pair Wire for AVC-LAN
This communication wire is a pair of twisted lines.
Communication is driven by applying positive (+) and
negative (-) voltages to the two lines in order to send a
single signal. This system, which is called a “Differential
Voltage Drive”, reduces noise.
AV Single Wire
This is a lightweight single communication wire that
consists of a single core line surrounded by insulation.
Voltage is applied to this line in order to drive
communication, and this system is called a “Single Wire
Voltage Drive”.