Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: System Diagram

SYSTEM DIAGRAM

Communication Table

Sender

Receiver

Signal

Line

ECM

Driving Support ECU Assembly

  • Cruise control operation signal
  • Accelerator pedal idle position signal
  • Accel override operation signal
  • Cruise control speed status signal
  • Approach warning signal
  • Brake signal
  • Cruise control main switch on signal
  • Cruise control mode signal
  • Set vehicle-to-vehicle distance signal
  • Cruise preset vehicle speed signal
  • Shift position signal (D and R)

CAN

Skid Control ECU (Brake Actuator Assembly)

  • Cruise control operation signal
  • Accelerator pedal idle position signal
  • Cruise control operation request signal
  • Braking request signal
  • Target acceleration from cruise control system signal

CAN

Combination Meter Assembly

  • Low speed cancel buzzer request signal
  • Low speed zone leading vehicle lost buzzer signal
  • Control vehicle speed unit signal
  • Cruise control display ID signal
  • Cruise control vehicle speed signal

CAN

Forward Recognition Camera

Cruise control operation signal

CAN

Driving Support ECU Assembly

ECM

  • Cruise control target acceleration signal
  • Cruise control mode signal
  • Target vehicle detection signal
  • Vehicle-to-vehicle distance control switch status signal
  • Detection of dirt adhesion on millimeter wave radar sensor assembly signal
  • Millimeter wave radar sensor assembly malfunction signal
  • Approach warning signal
  • Bad environment detection signal
  • Cruise control target acceleration raw data signal
  • Force request for driving support ECU assembly signal
  • Control status of driving support ECU assembly signal

CAN

Combination Meter Assembly

Millimeter wave radar sensor assembly beam axis deviation signal

CAN

Skid Control ECU (Brake Actuator Assembly)

Driving Support ECU Assembly

  • Wheel speed signal
  • Under TRAC control signal
  • Under VSC control signal
  • Cruise control cancellation request signal
  • Stop light switch status signal
  • Stop light switch control relay malfunction signal
  • Temporary inhibition of brake control signal
  • Under brake control signal
  • Yaw rate sensor zero point signal
  • Yaw rate sensor zero point malfunction signal

CAN

ECM

  • Wheel speed signal
  • Under TRAC control signal
  • Under VSC control signal
  • Cruise control cancellation request signal
  • Stop light switch control relay malfunction signal
  • Temporary inhibition of brake control signal
  • Under brake control signal
  • Presumed road slope signal
  • Estimated acceleration signal

CAN

Steering Sensor

Driving Support ECU Assembly

  • Steering sensor malfunction signal
  • Steering angle signal
  • Steering sensor zero point signal

CAN

Main Body ECU (Multiplex Network Body ECU)

Driving Support ECU Assembly

Destination information signal

CAN

Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly)

Driving Support ECU Assembly

  • Yaw rate sensor signal
  • Yaw rate sensor malfunction signal
  • Yaw rate sensor voltage signal

CAN

    Steering Pad Switch Circuit

    Terminals Of Ecu

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sfi System: Lost Communication with Active Grille Air Shutter Module "A" Missing Message (U028487)
    MONITOR DESCRIPTION The ECM and swing grille actuator assembly (active grille air shutter ECU) send and receive signals via CAN communication. If a communication error occurs between the ECM and swing grille actuator assembly, the ECM stores this DTC. DTC No. Detection Item DTC Detection Condition T ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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