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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 172 (On-Board Diagnostic - Radar Unit) >> DTC U0316-09; Error Signal Received From DSC HU/Cm >> Notes

DTC U0316-09; Error Signal Received From DSC HU/Cm: Notes

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE

Description Error signal received from DSC HU/CM
Detection condition
  • The radar unit detects the following conditions.
    • There is an error in the following signals sent from the DSC HU/CM.
  • Yaw rate signal
  • Lateral-G signal
  • Wheel speed signal
  • Brake fluid pressure signal
  • Cruise control system control signal
    • Signal error in brake light circuit
      • DSC HU/CM internal malfunction
Fail-safe
  • Inhibits the mazda radar cruise control (MRCC) system control
  • Inhibits the smart brake support (SBS) system control
  • Inhibits the distance recognition support system (DRSS) control (1)
Possible cause
  • DTCs are stored in the SAS control module.
    • SAS control module malfunction
  • DTCs are stored in the DSC HU/CM.
  • DTCs are stored in the rear body control module (RBCM).
    • Rear body control module (RBCM) malfunction
  • DSC HU/CM malfunction
  • Radar unit malfunction
System wiring diagram Not applicable
(1) Enabled depending on malfunction content.