DYNAMIC REAR STEERING SYSTEM, Diagnostic DTC:C1B13

DTC Code DTC Name
C1B13 Motor Rotation Angle Not Detected

DESCRIPTION

When the DRS ECU (rear steering control ECU) detects a problem with the motor rotation angle sensor circuit, DTC C1B13 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition
C1B13 Motor Rotation Angle Not Detected

All conditions are met:


  • The power switch is on (IG).

  • The power source voltage is 9 V or higher.

  • A problem with the motor rotation angle sensor is detected for approximately 0.2 seconds or more.

  • Rear steering link assembly

  • DRS ECU (rear steering control ECU)

 Comes on Power switch on (IG) again

WIRING DIAGRAM

B004Y4RE01
*a MRG
*b Motor Rotation Angle Sensor
*c DRS ECU (Rear Steering Control ECU)
*d Rear Steering Link Assembly

CAUTION / NOTICE / HINT

Note


  • When replacing the DRS ECU (rear steering control ECU), perform neutral position memorization and motor rotation angle sensor calibration.

    Click here

  • 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.

    Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Chassis > DRS > Trouble Codes
      Result
      Result Proceed to
      DTC C1B13 is output as a past DTC A
      DTC C1B13 is output as a current DTC B

    B

    GO TO STEP 4 Click here

    A

  2. PERFORM ACTUATOR FORCED ACTIVATION


    1. Perform actuator forced activation.

      Click here


      Chassis > DRS > Utility
      Tester Display
      Activate Rear Steering Motor
      Result
      Proceed to
      NEXT

    NEXT

  3. RECONFIRM DTC


    1. Check for DTCs.

      Click here


      Chassis > DRS > Trouble Codes
      Result
      Result Proceed to
      DTC C1B13 is output as a current DTC A
      DTC C1B13 is output as a past DTC B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  4. CHECK FREEZE FRAME DATA (MOTOR RESOLVER SIN PHASE OFFSET, MOTOR RESOLVER COS PHASE OFFSET)


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

    5. Display the DTCs on the GTS screen.

      Click here


      Chassis > DRS > Trouble Codes

    6. Select DTC "C1B13", and check the freeze frame data for "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset".

      Click here

      Result
      Result Proceed to
      "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are 5 V or higher A
      "Motor Resolver SIN Phase Offset" and "Motor Resolver COS Phase Offset" are below 5 V B

    B

    REPLACE DRS ECU (REAR STEERING CONTROL ECU) Click here

    A

  5. INSPECT REAR STEERING LINK ASSEMBLY (MOTOR ROTATION ANGLE SENSOR)


    1. Turn the power switch off.

    2. Disconnect the z20 rear steering link assembly connector from the DRS ECU (rear steering control ECU).

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      z20-3 (MRV) - z20-2 (MRG) Always 26 to 64 Ω
      z20-8 (MS1) - z20-2 (MRG) Always 92 to 230 Ω
      z20-7 (MS2) - z20-2 (MRG) Always 98 to 247 Ω
      z20-3 (MRV) - z20-8 (MS1) Always 118 to 294 Ω
      z20-3 (MRV) - z20-7 (MS2) Always 124 to 311 Ω
      z20-8 (MS1) - z20-7 (MS2) Always 190 to 477 Ω
      z20-3 (MRV) - Body ground Always 100 kΩ or higher
      z20-2 (MRG) - Body ground Always 100 kΩ or higher
      z20-8 (MS1) - Body ground Always 100 kΩ or higher
      z20-7 (MS2) - Body ground Always 100 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE DRS ECU (REAR STEERING CONTROL ECU) Click here

    NG

    REPLACE REAR STEERING LINK ASSEMBLY Click here