POWER STEERING SYSTEM (for 2AR-FSE), Diagnostic DTC:C1515/15, C1516/16, C1525/17, C1526/18

DTC Code DTC Name
C1515/15 Torque Sensor Zero Point Adjustment is not Initialized
C1516/16 Torque Sensor Zero Point Adjustment Incomplete
C1525/17 Rotation Angle Sensor Initialization Undone
C1526/18 Rotation Angle Sensor Initialization Incomplete

DESCRIPTION


DTC Code DTC Detection Condition Procedure
C1515/15 Torque sensor zero point calibration has not been performed. There is no malfunction if this DTC is not output again after performing zero point calibration.
C1516/16 Steering zero point calibration is incomplete due to the steering wheel being touched during calibration. There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and then performing zero point calibration.
C1525/17 Motor rotation angle sensor value initialization has not been performed. There is no malfunction if this DTC is not output again after performing motor rotation angle sensor value initialization.
C1526/18 Motor rotation angle sensor value initialization is incomplete due to the steering wheel being touched during calibration. There is no malfunction if this DTC is not output again after clearing the DTCs and torque sensor calibration value, and then performing motor rotation angle sensor value initialization.

WIRING DIAGRAM

A01FR3AE03

INSPECTION PROCEDURE

Note


  • If the power steering ECU assembly is replaced with a new one, perform assist map writing, clear the motor rotation angle sensor calibration value, initialize the motor rotation angle sensor value and calibrate the torque sensor zero point Click here.

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

Tech Tips


  • If DTC C1515/15 is output, perform torque sensor zero point calibration. If the DTC is no longer output, there is no malfunction.

  • If DTC C1516/16 is output, perform torque sensor zero point calibration after clearing the DTCs and sensor calibration values. If the DTC is no longer output, there is no malfunction.

  • If DTC C1525/17 is output, perform rotation angle sensor output calibration. If the DTC is no longer output, there is no malfunction.

  • If DTC C1526/18 is output, perform rotation angle sensor output calibration after clearing the DTCs and sensor calibration values. If the DTC is no longer output, there is no malfunction.

PROCEDURE


  1. RECONFIRM DTC


    1. Check for DTCs Click here. If DTCs C1516/16 and C1526/18 are output, clear the DTCs Click here.


    NEXT

  2. INITIALIZE MOTOR ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT


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


    NEXT

  3. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTCs are still output after performing motor rotation angle sensor value initialization and steering zero point calibration 3 times A
      DTCs are still output after performing motor rotation angle sensor value initialization and steering zero point calibration once or twice B
      DTC is not output C

    B

    INITIALIZE MOTOR ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT

    C

    END

    A

  4. CHECK CONNECTORS


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

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

      Result

      Result

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

    B

    CONNECT CONNECTORS CORRECTLY

    C

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    D

    REPLACE POWER STEERING LINK ASSEMBLY Click here

    A

  5. CHECK HARNESS AND CONNECTOR (POWER STEERING LINK ASSEMBLY - POWER STEERING ECU ASSEMBLY)


    1. Disconnect the C7 power steering ECU assembly connector.

    2. Disconnect the C3 torque sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C3-7 (TQG2) - C7-13 (TQG2) Always Below 1 Ω
      C3-2 (INSN) - C7-9 (INSN) Always Below 1 Ω
      C3-5 (OUCS) - C7-12 (OUCS) Always Below 1 Ω
      C3-6 (OUSN) - C7-11 (OUSN) Always Below 1 Ω
      C3-1 (INCS) - C7-10 (INCS) Always Below 1 Ω
      C3-8 (TQG1) - C7-6 (TQG1) Always Below 1 Ω
      C3-4 (TRQV) - C7-4 (TRQV) Always Below 1 Ω
      C3-7 (TQG2) or C7-13 (TQG2) - Body ground Always 10 kΩ or higher
      C3-2 (INSN) or C7-9 (INSN) - Body ground Always 10 kΩ or higher
      C3-5 (OUCS) or C7-12 (OUCS) - Body ground Always 10 kΩ or higher
      C3-6 (OUSN) or C7-11 (OUSN) - Body ground Always 10 kΩ or higher
      C3-1 (INCS) or C7-10 (INCS) - Body ground Always 10 kΩ or higher
      C3-8 (TQG1) or C7-6 (TQG1) - Body ground Always 10 kΩ or higher
      C3-4 (TRQV) or C7-4 (TRQV) - Body ground Always 10 kΩ or higher

    4. Disconnect the C2 motor rotation angle sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C2-2 (RZG) - C7-1 (RZG) Always Below 1 Ω
      C2-4 (RZCS) - C7-8 (RZCS) Always Below 1 Ω
      C2-1 (RZSN) - C7-7 (RZSN) Always Below 1 Ω
      C2-3 (RZV) - C7-3 (RZV) Always Below 1 Ω
      C2-2 (RZG) or C7-1 (RZG) - Body ground Always 10 kΩ or higher
      C2-4 (RZCS) or C7-8 (RZCS) - Body ground Always 10 kΩ or higher
      C2-1 (RZSN) or C7-7 (RZSN) - Body ground Always 10 kΩ or higher
      C2-3 (RZV) or C7-3 (RZV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT POWER STEERING LINK ASSEMBLY (TORQUE SENSOR AND MOTOR ROTATION ANGLE SENSOR)


    1. Disconnect the C3 torque sensor connector.

    2. A01FR5OE01
      Text in Illustration
      *a

      Component without harness connected

      (Torque Sensor)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (INCS) - 7 (TQG2) Always 90 to 170 Ω
      2 (INSN) - 7 (TQG2) Always 300 to 430 Ω
      4 (TRQV) - 8 (TQG1) Always 4 to 14 Ω
      5 (OUCS) - 7 (TQG2) Always 90 to 170 Ω
      6 (OUSN) - 7 (TQG2) Always 300 to 430 Ω

    3. Disconnect the C2 motor rotation angle sensor connector.

    4. A01FUNHE01
      Text in Illustration
      *a

      Component without harness connected

      (Motor Rotation Angle Sensor)

      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

    NG

    REPLACE POWER STEERING LINK ASSEMBLY Click here

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here