POWER STEERING SYSTEM, Diagnostic DTC:C1511, C1512, C1513

DTC Code DTC Name
C1511 Torque Sensor Circuit Malfunction
C1512 Torque Sensor Circuit Malfunction
C1513 Torque Sensor Circuit Malfunction

DESCRIPTION

The torque sensor converts rotation torque input to the steering wheel into an electrical signal and sends it to the ECU. Based on this signal, the ECU detects steering effort.

DTC No. DTC Detection Condition Trouble Area
C1511 Torque sensor (TRQ1) signal error or stop

  • Wire harness or connector

  • Torque sensor (built into power steering gear assembly)

  • Power steering ECU assembly
C1512 Torque sensor (TRQ2) signal error or stop

  • Wire harness or connector

  • Torque sensor (built into power steering gear assembly)

  • Power steering ECU assembly
C1513 Deviation between torque sensors

  • Wire harness or connector

  • Torque sensor (built into power steering gear assembly)

  • Power steering ECU assembly

WIRING DIAGRAM

A0161VXE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTORS


    1. Check the connection of the power steering ECU and rack and pinion power steering gear connectors.

    2. Visually inspect the terminals of the power steering ECU and rack and pinion power steering gear connectors.

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

      Note


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


    B

    CONNECT CONNECTORS CORRECTLY

    C

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    D

    REPLACE POWER STEERING GEAR ASSEMBLY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - TORQUE SENSOR)


    1. A015ZNSE02

      Disconnect the C4 connector from the power steering ECU assembly.

    2. Disconnect the C1 connector from the torque sensor.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C1-1 (INCS) - C4-10 (INCS) Always Below 1 Ω
      C1-2 (INSN) - C4-9 (INSN) Always Below 1 Ω
      C1-4 (TRQV) - C4-4 (TRQV) Always Below 1 Ω
      C1-5 (OUCS) - C4-12 (OUCS) Always Below 1 Ω
      C1-6 (OUSN) - C4-11 (OUSN) Always Below 1 Ω
      C1-7 (TQG2) - C4-13 (TQG2) Always Below 1 Ω
      C1-8 (TQG1) - C4-6 (TQG1) Always Below 1 Ω
      C1-1 (INCS) - Body ground Always 10 kΩ or higher
      C1-2 (INSN) - Body ground Always 10 kΩ or higher
      C1-4 (TRQV) - Body ground Always 10 kΩ or higher
      C1-5 (OUCS) - Body ground Always 10 kΩ or higher
      C1-6 (OUSN) - Body ground Always 10 kΩ or higher
      C1-7 (TQG2) - Body ground Always 10 kΩ or higher
      C1-8 (TQG1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT POWER STEERING GEAR ASSEMBLY (TORQUE SENSOR)


    1. A0162FQE02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C1-1 (INCS) - C1-7 (TQG2) Always 90 to 170 Ω
      C1-2 (INSN) - C1-7 (TQG2) Always 300 to 430 Ω
      C1-4 (TRQV) - C1-8 (TQG1) Always 4 to 14 Ω
      C1-5 (OUCS) - C1-7 (TQG2) Always 90 to 170 Ω
      C1-6 (OUSN) - C1-7 (TQG2) Always 300 to 430 Ω

      Note

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


    NG

    REPLACE POWER STEERING GEAR ASSEMBLY Click here

    OK

  4. REPLACE POWER STEERING ECU ASSEMBLY


    1. Replace the power steering ECU assembly 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 is not output A
      DTC C1511, C1512, or C1513 is output B

      Note

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


    B

    REPLACE POWER STEERING GEAR ASSEMBLY Click here

    A

    END