POWER STEERING SYSTEM, Diagnostic DTC:C1528

DTC Code DTC Name
C1528 Motor Rotation Angle Sensor Malfunction

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
C1528 A rotation angle sensor malfunction

  • Rotation angle sensor (built into steering column assembly)

  • Power steering ECU assembly

WIRING DIAGRAM

A004HM1E02
*a Rotation Angle Sensor
*b Power Steering ECU Assembly

CAUTION / NOTICE / HINT

Note

If the power steering ECU assembly or steering column assembly is replaced, perform rotation angle sensor initialization and torque sensor zero point calibration Click here.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (ROTATION ANGLE SENSOR - POWER STEERING ECU ASSEMBLY)


    1. A004JMTE02
      Text in Illustration
      *a

      Component with harness connected

      (Power Steering ECU Assembly)

      Check the connection condition of the z2 rotation angle sensor connector.

      OK
      Rotation angle sensor connector is securely connected to the power steering ECU assembly.

    NG

    CONNECT CONNECTOR SECURELY

    OK

  2. READ VALUE USING GTS (MOTOR ROTATION ANGLE)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Start the engine.

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / EMPS / Data List.

      EMPS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Motor Rotation Angle

      Motor rotation angle/

      Min.: 0.000 deg

      Max.: 360.000 deg

      		 Motor rotation angle value changes from 0 to 360° The engine is running and the steering wheel is being turned.
      OK
      During steering operation, motor rotation angle value changes from 0 to 360°.

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

  3. CHECK STEERING COLUMN ASSEMBLY


    1. A004HNQE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rotation Angle Sensor)

      Disconnect the z2 rotation angle sensor connector from the power steering ECU assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z2-14 (RZSN) - z2-7 (RZG) At 23°C (73°F) 75.2 to 112.8 Ω
      z2-5 (RZV) - z2-7 (RZG) At 23°C (73°F) 27.6 to 41.4 Ω
      z2-13 (RZCS) - z2-7 (RZG) At 23°C (73°F) 73.6 to 110.4 Ω

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

    REPLACE STEERING COLUMN ASSEMBLY Click here