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Home >> Mazda >> 2017 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> On-Board Diagnostic - Radar Unit >> DTC U0443-00; Rear Body Control Module Error Signal >> Notes
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DTC U0443-00; Rear Body Control Module Error Signal: Notes

DETECTION CONDITION AND POSSIBLE CAUSE

Description Rear Body Control Module Error Signal
Detection condition
  • Communication error between rear body control module (RBCM) and radar unit
Fail-safe
  • Inhibits the Mazda radar cruise control (MRCC) system control
  • Inhibits the smart brake support (SBS) system control
Possible cause
  • DTCs are stored in the rear body control module (RBCM).
  • DTCs are stored in the instrument cluster.
    • Instrument cluster malfunction
  • Rear body control module (RBCM) malfunction
  • Radar unit malfunction
System wiring diagram Not applicable