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Fail-Safe Chart [12/2017 - 10/2023]

  1. FAIL-SAFE CHART 
    1. When a malfunction occurs in the system, the DRS ECU (rear steering control ECU) performs the following fail-safe functions.
      DYNAMIC REAR STEERING SYSTEM FAIL-SAFE OPERATION

      DTC Code Detection Condition Fail-safe Operation
      C1597 Lost Communication between VGRS and DRS Returns the rear turning angle to the neutral position.
      C1B01 Actuator Angle Neutral Memorization Undone Control is not started.
      C1B02 Actuator Angle Neutral Memorization Incomplete Control is not started.
      C1B03 Actuator Angle Neutral Malfunction Control is not started.
      C1B04 Motor Rotation Angle Sensor Calibration Undone Control is not started.
      C1B05 Motor Rotation Angle Sensor Calibration Malfunction Control is not started.
      C1B11 Short in Motor Circuit Control is not started or stops.
      C1B12 Open in Motor Circuit Control is not started or stops.
      C1B13 Motor Rotation Angle Not Detected Control is not started or stops.
      C1B14 Stroke Sensor Circuit Returns the rear turning angle to the neutral position.
      C1B15 Motor Rotation Angle Malfunction Control is not started or stops.
      C1B17 Motor Rotation Angle Mismatch (Stroke Sensor) Control is not started or stops.
      C1B18 Direct Advance Wheel Angle Standard Deviation Detect Control is not started or stops.
      C1B21 ECU Malfunction (CPU) Control is not started or stops.
      C1B22 ECU Malfunction (Internal Line) Control is not started or stops.
      C1B23 ECU Malfunction (Substrate Temperature Sensor) Control continues.
      C1B24 Stroke Sensor (Actuator Angle Indeterminate) Control is not started.
      C1B25 ECU Malfunction (Flash Memory) Control is not started.
      C1B26 Motor Power Supply Voltage Circuit (ECU Start-up) Control is not started or stops.
      C1B29 IG Power Supply Voltage Circuit Control is not started or stops.
      C1B2A Motor Power Supply Voltage Circuit Control is not started or stops.
      U0100 Lost Communication with ECM/PCM "A" Control is not started.
      U0129 Lost Communication with Brake System Control Module Returns the rear turning angle to the neutral position.
      U0130 Lost Communication with Steering Effort Control Module Returns the rear turning angle to the neutral position.
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