ES 330 V6-3.3L (3MZ-FE) (2004)
Information Bus: Description and Operation
Multiplex Communication System (CAN)
Outline
SYSTEM OUTLINE
Multiplex communication system (CAN) uses a serial communication protocol and communicates with a differential voltage. In this network system,
TERMINALS CANH and CANL are used for communication between the ECUs and sensors, and excellent data communication speed and
communication error detecting facility are provided. This system is working for the following system:
-
VSC
Description
SYSTEM DIAGRAM
HINT: The Skid Control ECU stores DTCs and performs DTC communication by receiving information from the Steering Sensor and Yaw Rate
Sensor. These sensors cannot store DTCs or perform DTC communication.
SYSTEM DESCRIPTION
1. BRIEF DESCRIPTION
a. CAN (Controller Area Network) is a serial data communication system for real time application. It is a vehicle multiplex communication
system which has a high communication speed (500 kbps) and the ability to detect malfunctions.
b. The CAN performs the communication based on the differential voltage by pairing the CANH bus line and CANL bus line.
c. The ES330 uses the CAN communication system for communication between the following ECU and sensors in the ABS with EBD & BA &
TRAC & VSC system.
d. The CAN has two resistors of 120 Ohms that are necessary for communication to the main bus line.
2. DEFINITION OF TERMS
a. Main bus line
1. Main bus line is a wire harness between the two terminus circuits on the bus (communication line). This is the main bus in the CAN
communication system.
b. Sub bus line
1. Sub bus line is a wire harness which diverges from the main bus line, which is the main bus of the CAN bus, to an ECU or sensor.