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DYNAMIC REAR STEERING SYSTEM, Diagnostic DTC:C1B04, C1B05

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DTC Code DTC Name
C1B04 Motor Rotation Angle Sensor Calibration Undone
C1B05 Motor Rotation Angle Sensor Calibration Malfunction
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DESCRIPTION

The DRS ECU (rear steering control ECU) stores DTC C1B04 when motor rotation angle sensor calibration has not been performed. When the DRS ECU (rear steering control ECU) determines that the motor rotation angle sensor calibration is not complete, DTC C1B05 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition
C1B04 Motor Rotation Angle Sensor Calibration Undone Motor rotation angle sensor calibration has not been performed. Rear steering link assembly Comes on Perform actuator angle neutral position calibration.
C1B05 Motor Rotation Angle Sensor Calibration Malfunction Resolver calibration was performed to compensate for differences in resolver hardware for the motor rotation angle sensor, but calibration did not complete successfully. Rear steering link assembly Comes on Power switch on (IG) again
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CAUTION / NOTICE / HINT

Note:

If the rear steering link assembly or the rear suspension is removed and installed, replaced, or adjusted, after performing actuator calibration value initialization, perform neutral position memorization and motor rotation angle sensor calibration.

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PROCEDURE


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    CHECK FOR DTC


    1. Check for DTCs.

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      1. Chassis > DRS > Trouble Codes


      Result
      Result Proceed to
      DTCs C1B04 or C1B05 is output A
      DTCs other than C1B04 and C1B05 are output B
      DTC is not output C

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    PERFORM DYNAMIC REAR STEERING SYSTEM INITIALIZATION


    1. Perform actuator calibration value initialization.

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      1. Chassis > DRS > Utility
        Tester Display
        DRS Off-center Correction




      Result
      Proceed to
      NEXT

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    PERFORM DYNAMIC REAR STEERING SYSTEM CALIBRATION


    1. Perform neutral position memorization and motor rotation angle sensor calibration.

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      1. Chassis > DRS > Utility
        Tester Display
        DRS Neutral Memorization




      Result
      Proceed to
      NEXT

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    CHECK REAR WHEEL ALIGNMENT


    1. Check the rear wheel alignment and make adjustments if necessary.

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      Note:

      After adjusting the rear wheel alignment, perform front wheel alignment adjustment.

      Result
      Proceed to
      NEXT

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    RECONFIRM DTC


    1. Check for DTCs.

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      1. Chassis > DRS > Trouble Codes


      Note:

      If DTC C1B04 or C1B05 is output after performing neutral position memorization and motor rotation angle sensor calibration, confirm that the procedures are being performed correctly and perform neutral position memorization and motor rotation angle sensor calibration again (the maximum amount of attempts to perform neutral position memorization and motor rotation angle sensor calibration is 3 times).

      Result
      Result Proceed to
      DTC is not output A
      Even after performing neutral position memorization and motor rotation angle sensor calibration 3 times, DTC C1B04 or C1B05 is output. B

    • A

      END

    • B

      REPLACE REAR STEERING LINK ASSEMBLYClick here