Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 20vza dsc40001

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05-1932
                                        DIAGNOSTICS   -   CAN COMMUNICATION SYSTEM
                                                                                                    05BYI-01


DESCRIPTION
SYSTEM DESCRIPTION
(a) CAN(Controller Area Network) is a serial data communication system for real time application. It is a
    multiplex communication system to be equipped for a vehicle and has a high communication speed
    (500 kbps) and the function to detect malfunction.
(b) Pairing the CANH wire harness and CANL wire harness, the CAN performs the communication based
    on the voltage difference.
(c) The SIENNA uses the CAN communication system for the communication between the following ECU
    and sensors in the ABS with EBD & BA & TARC & VSC system.
     S     Skid control ECU
     S     Yaw rate sensor
     S     Steering angle sensor
(d) The skid control ECU stores and outputs DTCs in stead of the steering angle sensor and yaw rate sen-
    sor because they cannot store or output DTCs.
(e) In the CAN communication system, 2 terminus circuits* which are necessary to communicate with the
    mainline are placed.
    *: A circuit which consists of a resistor and condenser is placed to convert the communication current
    of the CAN communication into bus voltage.



                                                           DLC3




                 Skid Control                     CANH             CANL        Steering Angle
                 ECU                                                           Sensor
                                 CANH                                  CANH

                 120                            Junction
                                                Connector
                                 CANL                                   CANL

                                      CANH        CANL




                                        Yaw Rate Sensor

                                                                                                     F45108




2005 SIENNA REPAIR MANUAL (RM1163U)

                                                                  Author :           Date :           2115

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