POWER STEERING SYSTEM, Diagnostic DTC:C1528/12

DTC Code DTC Name
C1528/12 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. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
C1528/12 Motor Rotation Angle Sensor Malfunction Motor rotation angle sensor malfunction Power steering ECU assembly On Power switch on (IG) again -

WIRING DIAGRAM

A01MIPLE03
*a RSIN
*b RCOS
*c Motor Rotation Angle Sensor (built into Power Steering Column)
*d Power Steering ECU Assembly

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION


    1. Check the connection condition of the torque sensor connector.

      OK
      Torque sensor connector is securely connected to the power steering ECU assembly.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTOR

    OK

  2. READ VALUE USING GTS (MOTOR ROTATION ANGLE)


    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. 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 GTS.


      Chassis > EMPS > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Motor Rotation Angle Motor rotation angle

      Min.: 0.000 deg

      Max.: 1441.770 deg

      		 During steering operation, motor rotation angle value changes from 0 to 360° Power switch on (READY) and power steering is in operation

      Chassis > EMPS > Data List
      Tester Display
      Motor Rotation Angle
      OK
      During steering operation, motor rotation anglevalue changes from 0 to 360°.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

  3. CHECK HARNESS AND CONNECTOR


    1. A01MGLEC08
      *a

      Front view of wire harness connector

      (to Motor Rotation Angle Sensor)

      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
      z8-1(R+) -z8-3(RGND) Always 27.6 to 41.4 Ω
      z8-6(RSIN) -z8-3(RGND) Always 75.2 to 112.8 Ω
      z8-5(RCOS) -z8-3(RGND) Always 73.2 to 110.8 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

    REPLACE STEERING COLUMN ASSEMBLY Click here