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 steering column assembly)

  • Power steering ECU

WIRING DIAGRAM

A01NHEEE10

INSPECTION PROCEDURE

Note

If the power steering ECU and steering column assembly have 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
      The 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 power switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the intelligent tester on.

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

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

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

      Motor rotation angle/

      Min.: 0 deg

      Max.: 360 deg

      		 During steering operation, motor rotation angle value changes from 0 to 360° The power switch on (READY) and steering wheel is being turned.
      OK
      During steering operation, motor rotation angle value changes from 0 to 360°.

    NG

    CHECK STEERING COLUMN ASSEMBLY Click here

    OK

    REPLACE POWER STEERING ECU Click here

  3. CHECK STEERING COLUMN ASSEMBLY


    1. A01NFDME05
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Steering ECU)

      Disconnect the z10 power steering ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z10-6 (RSIN) - z10-3 (RGND) Always 75.2 to 112.8 Ω
      z10-1 (ROUT) - z10-3 (RGND) Always 27.6 to 41.4 Ω
      z10-5 (RCOS) - z10-3 (RGND) Always 73.2 to 110.8 Ω

    NG

    REPLACE STEERING COLUMN ASSEMBLY Click here

    OK

    REPLACE POWER STEERING ECU Click here