DTC    C1528    Motor Rotation Angle Sensor Malfunction

for Preparation Click here


DESCRIPTION

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

DTC No.
DTC Detection Condition
Trouble Area
C1528
Motor rotation angle sensor malfunction
  1. Steering column assembly (Motor rotation angle sensor)
  2. Power steering ECU assembly

WIRING DIAGRAM


C137251E21


INSPECTION PROCEDURE

NOTICE:
If the steering column assembly or power steering ECU assembly has been replaced, perform 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 assembly.



NG
CONNECT CONNECTOR
OK


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

  1. Turn the power switch off.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (READY).

  1. Turn the intelligent tester 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 intelligent tester.

    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 switch on (READY) and steering wheel being turned

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



NG
Go to step 3
OK

REPLACE POWER STEERING ECU ASSEMBLY (Click here)  

3.CHECK STEERING COLUMN ASSEMBLY


    C181647E15

  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
    z12-6 (RZSN) - z12-3 (RZG)
    		Always
    		75.2 to 112.8 Ω
    z12-1 (RZV) - z12-3 (RZG)
    		Always
    		27.6 to 41.4 Ω
    z12-5 (RZCS) - z12-3 (RZG)
    		Always
    		73.2 to 110.8 Ω

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Motor Rotation Angle Sensor)



NG
REPLACE STEERING COLUMN ASSEMBLY (Click here)
OK

REPLACE POWER STEERING ECU ASSEMBLY (Click here)