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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Pre-Collision - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2020 - ] >> Description
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DTC U0418-81: Invalid Data Received from Brake System Control Module Invalid Serial Data Received [08/2020 - ]: Description

The millimeter wave radar sensor assembly receives signals related to the brake control condition from the skid control ECU (brake actuator assembly) via the CAN communication line.

If the millimeter wave radar sensor assembly receives signals from the skid control ECU (brake actuator assembly) indicating a brake control system malfunction, the millimeter wave radar sensor assembly stores DTC U0418-81.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0418-81 Invalid Data Received from Brake System Control Module Invalid Serial Data Received When the ignition switch is ON for 3 seconds or more, the millimeter wave radar sensor assembly receives a brake control system malfunction signal from the skid control ECU (brake actuator assembly) for 1 second or more.
  • Millimeter Wave Radar Sensor Assembly
  • Skid Control ECU (Brake Actuator Assembly)