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Home >> Honda >> 2021 >> CR-V EX-L, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 77 (Driving Assistance Warning System - Testing & Troubleshooting (Hybrid)) >> Description & Operation >> Road Departure Mitigation System Description - System Diagram

Road Departure Mitigation System Description - System Diagram

WARNING: This page is about a different variant/trim than selected.

The system diagram of the RDM system is shown below.

For locations of each component on the vehicle, refer to Component Location Index:

The RDM system for this vehicle uses the multipurpose camera unit to calculate camera image information, and sends the RDM system indicated value to the control unit via the millimeter wave radar.

GHH376399Courtesy of HONDA, U.S.A., INC.

F-CAN Communication Data 

Millimeter Wave Radar Receiving Signal: 

Originating Unit Signal Name
EPS control unit
  • EPS failure information
  • Steering angle neutral position learning information
  • Steering angle signal
  • Torque sensor signal
Gauge control module
  • Customization signal
  • Gauge control module failure information
  • Turn signal lights operating status
  • Wiper operating status
Multipurpose camera unit* RDM switch status information
PCM
  • Accelerator pedal position (APP) sensor signal
  • Brake pedal position switch signal
  • PCM failure information
  • Vehicle speed signal
SRS unit
  • Yaw rate sensor signal
  • Yaw rate sensor failure information
VSA modulator-control unit
  • Master cylinder pressure signal
  • VSA system actuation information
  • VSA system failure information
  • Wheel speed sensor signals
Electric servo brake control unit/pedal feel simulator
  • Electric servo brake system failure information
  • Brake control status signal
  • Brake light relay circuit failure information

*: With the multipurpose camera unit via ACC-CAN line.

Millimeter Wave Radar Transmitting Signal: 

Destination Unit Signal Name
EPS control unit
  • RDM failure information
  • RDM control instruction
Gauge control module
  • Buzzer request signal
  • Customization information
  • RDM failure information
  • Multi information display (MID) screen requirement:
    • -

      RDM indicator

    • -

      RDM system indicates for self-diagnostic function

Multipurpose camera unit* ---
PCM ---
SRS unit RDM operating information
VSA modulator-control unit ---
Electric servo brake control unit/pedal feel simulator
  • Automatic brake actuation request signal
  • RDM failure information

*: With the multipurpose camera unit via ACC-CAN line.