MULTIPLEX COMMUNICATION SYSTEM [(E)]

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Outline

• A control area network (CAN) system has been adopted in which the multiple control modules send/receive signals using two common communication lines.

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• 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

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Local CAN

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LIN communication

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ISO communication

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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.

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R.H.D.

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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

― Adaptive front lighting system (AFS) control module/auto leveling control module/adaptive led headlights control module/a

― SAS control module

― Electronically controlled brake unit/DSC HU/CM

― TCM

― PCM

• CAN BUS No.2 is used for communication between the following modules:

― Body control module (BCM)

― NOx sensor

― PM sensor

― Mazda M Hybrid battery

― Electronically controlled brake unit/DSC HU/CM

― DC-DC converter (Mazda M Hybrid)

― Integrated starter generator (ISG)

― 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)

― Climate control unit

― Active driving display

― Steering lock unit

― Steering angle sensor

― Instrument cluster

― Door-electrical supply unit (driver's side)

― Door-electrical supply unit (passenger's side)

― LF control unit

― Dash-electrical supply unit

― Shift panel (indicator)

― 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) (Except Chinese specs.)/Audio control unit(ACU) (Chinese specs.)

• 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 PCM and TCM

― 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 theft-deterrent siren

― Between body control module (BCM) and intruder sensor

― Between body control module (BCM) and windshield wiper motor

― 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 rear map light

― Between electrical supply unit (ESU) and theft-deterrent siren

― Between electrical supply unit (ESU) and intruder sensor

― Between dash-electrical supply unit and driver-side air mix actuator

― Between dash-electrical supply unit and passenger-side air mix actuator

― Between dash-electrical supply unit and airflow mode actuator

― Between dash-electrical supply unit and rear vent actuator

― Between dash-electrical supply unit and air intake actuator

― Between dash-electrical supply unit and heated steering wheel control unit

― Between dash-electrical supply unit and position memory control module

― Between dash-electrical supply unit and seat warmer control unit

― Between dash-electrical supply unit and PTC heater

― Between PCM and current sensor

― Between PCM and engine oil level sensor

― Between PCM and active air shutter

― Between PCM and DC-DC converter

― Between PCM and fuel injector No.1 (SKYACTIV-G or SKYACTIV-X)

― Between PCM and fuel injector No.2 (SKYACTIV-G or SKYACTIV-X)

― Between PCM and fuel injector No.3 (SKYACTIV-G or SKYACTIV-X)

― Between PCM and fuel injector No.4 (SKYACTIV-G or SKYACTIV-X)

― Between PCM and glow control module

― Between adaptive front lighting system (AFS) control module and swivel actuator (LH)

― Between adaptive front lighting system (AFS) control module and swivel actuator (RH)

― Between adaptive LED headlights control module and headlight leveling actuator (LH)

― Between adaptive LED headlights control module and headlight leveling actuator (RH)

― 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

― Between body control module (BCM) and remote engine start

― Between connectivity master unit (CMU) (Except Chinese specs.)/audio control unit(ACU) (Chinese specs.) and commander switch

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 resistor 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) (Except Chinese specs.)/Audio control unit(ACU) (Chinese specs.)

• 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.

― PCM

― TCM

― 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)

― Theft-deterrent siren

― Intruder sensor

― Windshield wiper motor

― Humidity sensor/solar radiation sensor/auto light sensor/rain sensor

― Indicator unit

― Front map light

― Rear map light

― Dash-electrical supply unit

― Driver-side air mix actuator

― Passenger-side air mix actuator

― Airflow mode actuator

― Rear vent actuator

― Air intake actuator

― Heated steering wheel control unit

― Position memory control module

― Seat warmer control unit

― PTC heater

― PCM

― Engine oil level sensor

― Current sensor

― Active air shutter

― Fuel injector No.1 (SKYACTIV-G or SKYACTIV-X)

― Fuel injector No.2 (SKYACTIV-G or SKYACTIV-X)

― Fuel injector No.3 (SKYACTIV-G or SKYACTIV-X)

― Fuel injector No.4 (SKYACTIV-G or SKYACTIV-X)

― DC-DC converter

― Glow control module

― Adaptive front lighting system (AFS) control module

― Swivel actuator (LH)

― Swivel actuator (RH)

― Adaptive LED headlights control module

― Headlight leveling actuator (LH)

― Headlight leveling actuator (RH)

― Instrument cluster

― Cluster switch

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

― Remote engine start

― Connectivity master unit (CMU)(Except Chinese specs.)/Audio control unit(ACU) (Chinese spec.)

― Commander switch