POWER STEERING SYSTEM, Diagnostic DTC:C1528

DTC Code DTC Name
C1528 Motor Rotation Angle Sensor

DESCRIPTION

The motor rotation angle sensor detects the motor rotation angle and sends this information to the power steering ECU assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Note
C1528 Motor Rotation Angle Sensor Motor rotation angle sensor malfunction

  • Motor rotation angle sensor (Power steering link assembly)

  • Wire harness or connector

  • Power steering ECU assembly

 EPS warning light: Comes on -

WIRING DIAGRAM

A01MSTZE05

CAUTION / NOTICE / HINT

Note


  • If the power steering ECU assembly has been replaced, perform assist map writing, rotation angle sensor initialization and torque sensor zero point calibration.

    Click here

  • If the power steering link assembly has been replaced, perform rotation angle sensor initialization and torque sensor zero point calibration.

    Click here

PROCEDURE


  1. CHECK CONNECTORS


    1. Check the connection of the power steering ECU assembly and power steering link assembly connectors.

    2. Visually inspect the terminals of the power steering ECU assembly and power steering link assembly connectors.

      Result
      Result Proceed to
      Normal A
      Connectors not properly connected B
      Power steering ECU assembly connector terminals abnormal C
      Power steering link assembly connector terminals abnormal D

    B

    CONNECT CONNECTORS PROPERLY

    C

    REPLACE POWER STEERING ECU ASSEMBLY for LHD: Click here
    REPLACE POWER STEERING ECU ASSEMBLY for RHD: Click here

    D

    REPLACE POWER STEERING LINK ASSEMBLY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - MOTOR ROTATION ANGLE SENSOR)


    1. Disconnect the C2 motor rotation angle sensor connector.

    2. Disconnect the C5 power steering ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C2-2 (RZG) - C5-1 (RZG) Always Below 1 Ω
      C2-4 (RZCS) - C5-8 (RZCS) Always Below 1 Ω
      C2-1 (RZSN) - C5-7 (RZSN) Always Below 1 Ω
      C2-3 (RZV) - C5-3 (RZV) Always Below 1 Ω
      C2-2 (RZG) - Body ground Always 10 kΩ or higher
      C2-4 (RZCS) - Body ground Always 10 kΩ or higher
      C2-1 (RZSN) - Body ground Always 10 kΩ or higher
      C2-3 (RZV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT POWER STEERING LINK ASSEMBLY (MOTOR ROTATION ANGLE SENSOR)


    1. Disconnect the C2 motor rotation angle sensor connector.

    2. A01MRRZC02
      *a

      Component without harness connected

      (Motor Rotation Angle Sensor)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (RZSN) - 2 (RZG) Always 50 to 140 Ω
      3 (RZV) - 2 (RZG) Always 15 to 45 Ω
      4 (RZCS) - 2 (RZG) Always 50 to 140 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER STEERING LINK ASSEMBLY Click here

    OK

  4. REPLACE POWER STEERING ECU ASSEMBLY


    1. Replace the power steering ECU assembly.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. ASSIST MAP WRITING, INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT


    1. Perform assist map writing, rotation angle sensor initialization and torque sensor zero point calibration.

      Click here


      Chassis > EMPS > Utility
      Tester Display
      Torque Sensor Adjustment
      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Chassis > EMPS > Clear DTCs

    2. Turn the power switch on (READY).

    3. Check for DTCs.

      Click here


      Chassis > EMPS > Trouble Codes
      Result
      Result Proceed to
      DTC C1528 is not output. A
      DTC C1528 is output. B

    A

    END

    B

    REPLACE POWER STEERING LINK ASSEMBLY Click here