Phần 1 (Tài liệu bằng tiếng anh) gồm: - Kết cấu thân xe - Kết cấu phần điện - CHASSIS - Kích thước xe - Động cơ xe
Trang 1BODY ELECTRICAL – MULTIPLEX COMMUNICATION
BODY ELECTRICAL
02KBE01Y
CAN
Gateway
ECU*1
AFS ECU*2 Seat Belt
Control ECU*3
Distance Control ECU*4
Engine ECU A / C ECU Skid Control ECU Meter ECU Steering Angle
Sensor*5,6
Yaw Rate &
Deceleration* 5 /Lateral Acceleration* 6 Rate Sensor
Active Control Engine Mount ECU*7 Airbag Sensor
Main
Body
ECU
Clearance Sonar ECU*9
Seat ECU*10 (for Driver) Mayday ECU*11
Mirror ECU*10 CertificationECU*12 Tilt & Telescopic ECU*10
CAN (CAN No.2 Bus)
CAN (CAN No.1 Bus)
CAN (MS Bus)
*1: Installed only when CAN No.2 bus is used
*2: Models with intelligent AFS
*3: Models with the pre-crash safety system
*4: Models with the dynamic radar type cruise
control system
*5: Except 2AZ-FE engine models with vehicle
stability control (VSC) system for Australia and
G.C.C Countries
*6: 2AZ-FE engine models with vehicle stability control (VSC) system for Australia and G.C.C Countries
*7: Models with the power tilt & power telescopic column
*8: Models with SRS airbag system
*9: Models with the Toyota parking assist system
*10: Models with the memory system
*11: Models with the Toyota Link system
*12: Models with the smart entry and start system
BE-4
MULTIPLEX COMMUNICATION
JDESCRIPTION
D The multiplex communication system of the new Camry uses the CAN (Controller Area Network) to achieve a streamlined wiring harness configuration
D The CAN (Controller Area Network) is classified into two types according to communication speed The
HS (High Speed)-CAN is used for the power train, chassis and body electrical systems, and the MS (Medium Speed)-CAN is used for the body electrical system
D The HS-CAN consists of two buses (the CAN No.1 bus and CAN No.2 bus) and the MS-CAN consists
of one bus (MS bus) ECUs with gateway functions (the CAN gateway ECU and main body ECU)are used
to transmit data between the buses
D Due to the introduction of the CAN system for the power train, chassis and body electrical systems, the BEAN (Body Electronics Area Network) is no longer used on this model
D A customized body electronics system is used, enabling the control functions of the ECUs to be set using
an intelligent tester II For details, see page BE-14
" System Diagram A
Trang 2BE BODY ELECTRICAL – MULTIPLEX COMMUNICATION
240BE03
240BE05
Frame
Data 1
0
Battery
Serial Communication Data
Switch
ECU
Light
Motor
Heater
Solenoid
BE-5
— REFERENCE —
MPX communication uses serial communication data that consists of bits and frames in order to exchange
information among the various ECUs This allows a reduction of the amount of wiring on the vehicle.
D A bit is the basic unit of communication that is used to represent information A bit is represented by binary
values of “0” or “1”.
D A frame is a body of data that is transmitted together A frame contains a header that indicates the
beginning, and an end message that indicates the end.
" Conceptual Drawing A