Dtc C1528 Motor Rotation Angle Sensor Malfunction

Steering. Corolla. Zre142 Aze141
Power Assist Systems. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CONNECTOR CONNECTION CONDITION

READ VALUE USING TECHSTREAM (MOTOR ROTATION ANGLE SENSOR)

CHECK STEERING COLUMN ASSEMBLY

DTC 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
  1. Steering column assembly
  2. Power steering ECU

WIRING DIAGRAM


Corolla. Zre142 Aze141.Power Assist Systems.Power Steering System (For 2Az-Fe). Dtc C1528 Motor Rotation Angle Sensor Malfunction


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 (COROLLA_ZRE142 RM00000275305CX.html).
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 (COROLLA_ZRE142 RM000002XN605AX.html)

3.CHECK STEERING COLUMN ASSEMBLY


    Corolla. Zre142 Aze141.Power Assist Systems.Power Steering System (For 2Az-Fe). Dtc C1528 Motor Rotation Angle Sensor Malfunction

  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 (COROLLA_ZRE142 RM0000029SZ02TX.html)
OK

END