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 Code Detection Condition Trouble Area
C1528

Motor rotation angle sensor malfunction

(e.g., an open, short to ground, or short to B+ in the rotation angle sensor circuit)


  • Motor rotation angle sensor (built into power steering link assembly)

  • Harness or connector

  • Power steering ECU

WIRING DIAGRAM

A01GZBCE12

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTORS


    1. Check the connection of the power steering ECU and power steering link assembly connectors.

    2. Visually inspect the terminals of the power steering ECU and power steering link assembly connectors.

      Result
      Result Proceed to
      Normal A
      Connectors not properly connected B
      Power steering ECU connector terminals abnormal C
      Power steering link assembly connector terminals abnormal D

      Note


      • If replacing the power steering link assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Click here.

      • If replacing the power steering ECU, initialize the rotation angle sensor value and calibrate the torque sensor zero point Click here.


    B
    C
    D
    A
  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - MOTOR ROTATION ANGLE SENSOR)


    1. A01GZGYE02

      Disconnect the C2 power steering ECU connector.

    2. Disconnect the C4 motor rotation angle sensor connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      C4-1 (RZSN) - C2-7 (RZSN) Always Below 1 Ω
      C4-2 (RZG) - C2-1 (RZG)
      C4-3 (RZV) - C2-3 (RZV)
      C4-4 (RZCS) - C2-8 (RZCS)
      C4-1 (RZSN) - Body ground Always 10 kΩ or higher
      C4-2 (RZG) - Body ground
      C4-3 (RZV) - Body ground
      C4-4 (RZCS) - Body ground

    NG
    OK
  3. INSPECT POWER STEERING LINK ASSEMBLY (MOTOR ROTATION ANGLE SENSOR)


    1. Disconnect the C4 motor rotation angle sensor connector.

    2. A01GXQME02

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

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (RZSN) - 2 (RZG) Always 50 to 140 Ω
      3 (RZV) - 2 (RZG) Always 15 to 45 Ω
      4 (RZCS) - 2 (RZG) Always 50 to 140 Ω

      Note

      If replacing the power steering link assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Click here.


    NG
    OK
  4. REPLACE POWER STEERING ECU


    1. Replace the power steering ECU Click here.


    NEXT
  5. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT


    1. Initialize the rotation angle sensor value and calibrate the torque sensor zero point Click here.


    NEXT
  6. RECONFIRM DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1528 is not output A
      DTC C1528 is output B

      Note

      If replacing the power steering link assembly, clear the rotation angle sensor calibration value, initialize the rotation angle sensor value, and calibrate the torque sensor zero point Click here.


    B
    A