POWER STEERING SYSTEM, Diagnostic DTC:C1528

DTC Code DTC Name
C1528 Motor Rotation Angle Sensor Malfunction

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
C1528 Motor rotation angle sensor malfunction

  • Motor rotation angle sensor (built into power steering motor assembly)

  • Power steering ECU

WIRING DIAGRAM

A01CD4LE06

INSPECTION PROCEDURE

Note

If the power steering ECU and power steering motor assembly has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration Click here.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION


    1. Check the installation condition of the motor rotation angle sensor connector.

      OK
      Motor rotation angle sensor connector is securely connected to the power steering ECU.

    NG

    CONNECT CONNECTOR

    OK

  2. READ VALUE USING INTELLIGENT TESTER (MOTOR ROTATION ANGLE SENSOR)


    1. Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the intelligent tester on.

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

    6. Select the item "Motor Rotate" in the Data List and read the value displayed on the intelligent tester.

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

      Motor rotation angle/

      Min.: 0 deg

      Max.: 360 deg

      		 During steering operation, motor rotation angle value changes from 0 to 360° Engine running and steering is being turned
      OK
      During steering operation, motor rotation angle value changes from 0 to 360°.

    NG

    CHECK POWER STEERING MOTOR ASSEMBLY Click here

    OK

    REPLACE POWER STEERING ECU Click here

  3. CHECK POWER STEERING MOTOR ASSEMBLY


    1. A01CF97E02

      Disconnect the connector from the motor rotation angle sensor.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z14-6 (RZSN) - z14-3 (RZG) Always 75.2 to 112.8 Ω
      z14-1 (RZV) - z14-3 (RZG) Always 27.6 to 41.4 Ω
      z14-5 (RZCS) - z14-3 (RZG) Always 73.2 to 110.8 Ω

    NG

    REPLACE POWER STEERING MOTOR ASSEMBLY Click here

    OK

    REPLACE POWER STEERING ECU Click here