DTC    C1528    Motor Rotation Angle Sensor Malfunction

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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
  1. Steering column assembly
  2. Power steering ECU

WIRING DIAGRAM


C137251E05


INSPECTION PROCEDURE

NOTICE:
If the steering column assembly or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration (Click here).
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 TECHSTREAM (MOTOR ROTATION ANGLE SENSOR)
  1. Turn the ignition switch off.

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch on (IG).

  1. Turn the Techstream on.

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

  1. Select the item "Motor Rotation Angle" in the Data List and read the value displayed on the Techstream.

    EMPS 
    Tester Display
    Measurement Item/Range
    Normal Condition
    Diagnostic Note
    Motor Rotation Angle
    Motor rotation angle/
    Min.: 0 deg
    Max.: 1441.77 deg
    During steering operation, motor rotation angle value changes from 0 to 360°
    Power steering in operation

    OK:
    During steering operation, motor rotation angle value changes from 0 to 360°.


NG
Go to step 3
OK

REPLACE POWER STEERING ECU (Click here)  

3.CHECK STEERING COLUMN ASSEMBLY


    C181647E01
  1. Disconnect the connector from the motor rotation angle sensor.

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

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    a1-6 (RZSN) - a1-3 (RZG)
    Always
    75.2 to 112.8 Ω
    a1-1 (RZV) - a1-3 (RZG)
    Always
    27.6 to 41.4 Ω
    a1-5 (RZCS) - a1-3 (RZG)
    Always
    73.2 to 110.8 Ω


NG
REPLACE STEERING COLUMN ASSEMBLY (Click here)
OK

END