MULTIPLEX COMMUNICATION SYSTEM [(E)]

id1000000014x2

Note
•  For details on other CAN related modules, refer to the [EV CONTROL SYSTEM]. (See EV CONTROL SYSTEM [(E)].)

Outline

•  A control area network (CAN) system has been adopted in which the multiple control modules send/receive signals using two common communication lines.
ac5uun00002862
•  Local CAN, ISO communication, or LIN communication has been adopted for the individual communication between control modules in consideration of the communication speed and the cost.

System Wiring Diagram

Note
•  The following figure shows the CAN/LIN communication/ISO communication/local CAN connection conditions. The availability of the equipment may differ depending on the vehicle specifications.

CAN communication (L.H.D.)

a30zzn00002591
a30zzn00002592

CAN communication (R.H.D.)

a30zzn00002593
a30zzn00002594

Local CAN

a30zzn00001061

LIN communication

a30zzn00000810

ISO communication

a30zzn00001081

Structural View

Note
•  The following figure shows the installation positions for the equipment which perform CAN communication. The availability of the equipment may differ depending on the vehicle specifications.

L.H.D.

a30zzn00000740
a30zzn00000741

R.H.D.

a30zzn00002249
a30zzn00002250

Function


CAN (controller area network) system

•  CAN BUS No.1 is used for communication between the following modules:
―  Body control module (BCM)
―  EPS control module
―  Auto leveling control module/adaptive LED headlights control module
―  SAS control module
―  Electronically controlled brake unit
―  Parking lock actuator
―  Selector lever
―  PCM
•  CAN BUS No.2 is used for communication between the following modules:
―  Body control module (BCM)
―  Drive motor control module
―  Electronically controlled brake unit
―  Parking lock actuator
―  Selector lever
―  PCM
•  CAN BUS No.3 is used for communication between the following modules:
―  Body control module (BCM)
―  Front combination light (LH)
―  Front combination light (RH)
―  Heat pump control unit
―  Instrument cluster
―  Climate control unit
―  Steering lock unit
―  Active driving display
―  Steering angle sensor
―  Door-electrical supply unit (driver's side)
―  LF control unit
―  Door-electrical supply unit (passenger's side)
―  Dash-electrical supply unit
―  Electrical supply unit (ESU)
•  CAN BUS No.4 is used for communication between the following modules:
―  Body control module (BCM)
―  Rear side radar sensor (RH)
―  Parking assist unit (ultrasonic)
―  Electrical supply unit (ESU)
•  CAN BUS No.5 is used for communication between the following modules:
―  Body control module (BCM)
―  Parking assist unit (optical)/360°view monitor control module
―  Driver monitoring camera unit
―  Forward sensing camera (FSC)
•  CAN BUS No.6 is used for communication between the following modules:
―  Body control module (BCM)
―  Front side radar sensor (LH)
―  Front radar sensor
•  CAN BUS No.7 is used for communication between the following modules:
―  Body control module (BCM)
―  Audio amplifier
―  Connectivity master unit (CMU)
•  CAN BUS No.8 is used for communication between the following modules:
―  Body control module (BCM)
―  Emergency call unit


Local CAN

•  Local CAN is used for communication between the following modules:
―  Between front side radar sensor (LH) and front side radar sensor (RH)
―  Between rear side radar sensor (LH) and rear side radar sensor (RH)


LIN communication

•  LIN communication is used for communication between the following modules:
―  Between body control module (BCM) and electrical supply unit (ESU)
―  Between body control module (BCM) and humidity sensor/solar radiation sensor/auto light sensor/rain sensor
―  Between body control module (BCM) and indicator unit
―  Between body control module (BCM) and front map light
―  Between body control module (BCM) and theft-deterrent siren
―  Between body control module (BCM) and intruder sensor
―  Between dash-electrical supply unit and air mix actuator
―  Between dash-electrical supply unit and airflow mode actuator
―  Between dash-electrical supply unit and air intake actuator
―  Between dash-electrical supply unit and position memory control module/ seat warmer control unit
―  Between dash-electrical supply unit and heated steering wheel control unit
―  Between PCM and active air shutter
―  Between PCM and current sensor
―  Between PCM and PTC heater
―  Between PCM and electric water pump
―  Between PCM and electric compressor
―  Between instrument cluster and cluster switch


ISO communication

•  ISO communication is used for communication between the following modules:
―  Between body control module (BCM) and LF control unit


Construction


CAN

•  The CAN BUS No.1 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  PCM
•  The CAN BUS No.2 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  PCM
•  The CAN BUS No.3 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  Electrical supply unit (ESU)
•  The CAN BUS No.4 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  Electrical supply unit (ESU)
•  The CAN BUS No.5 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  Forward sensing camera (FSC)
•  The CAN BUS No.6 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
•  The CAN BUS No.7 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  Connectivity master unit (CMU)
•  The CAN BUS No.8 has terminating resistors built into the following units which form the CAN lines.
―  Body control module (BCM)
―  Emergency call unit


Local CAN

•  The local CAN has terminating resistors built into the following units which form the CAN lines.
―  Front side radar sensor (LH)
―  Front side radar sensor (RH)
―  Rear side radar sensor (LH)
―  Rear side radar sensor (RH)


LIN communication

•  The LIN communication has drivers built into the following units which form the LIN communication lines.
―  Body control module (BCM)
―  Electrical supply unit (ESU)
―  Humidity sensor/solar radiation sensor/auto light sensor/rain sensor
―  Indicator unit
―  Front map light
―  Theft-deterrent siren
―  Intruder sensor
―  Dash-electrical supply unit
―  Air mix actuator
―  Airflow mode actuator
―  Air intake actuator
―  Heated steering wheel control unit
―  Position memory control module / seat warmer control unit
―  Instrument cluster
―  Cluster switch
―  PCM
―  Active air shutter
―  Current sensor
―  PTC heater
―  Electric compressor
―  Electric water pump


ISO communication

•  The ISO communication has drivers built into the following units which form the ISO communication lines.
―  Body control module (BCM)
―  LF control unit