Highlander 2WD V6-3.3L (3MZ-FE) Hybrid (2006)
c. Based on serial communication, various ECUs are connected on a network to exchange various pieces of information. Such a system is called a
multiplex communication system.
1. The BEAN uses a ring and bus style of network to connect ECUs. This style of communication method is called a daisy chain. In a daisy
chain, communication can be maintained even if the network has an open circuit.
2. The AVC-LAN uses a star style, which is centered on the multi-display or audio head unit.
d. Difference of CAN, BEAN and AVC-LAN
1. The CAN, BEAN and AVC-LAN protocols have set guidelines for data. The guidelines include communication speed, type of
communication wire, drive type and data length. These guidelines are established to facilitate ECU data communication.
HINT:
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*: The abbreviation "bps" stands for "bits per second".
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The CAN uses the multi star style bus connection. The 2 junction connectors are connected with a main bus line. The junction
connector extends a sub bus line and enables communication between all the connected ECUs.