POWER STEERING SYSTEM(for 2GR-FXE), Diagnostic DTC:C1511/11, C1512/11, C1513/11

DTC Code DTC Name
C1511/11 Torque Sensor 1 Malfunction
C1512/11 Torque Sensor 2 Malfunction
C1513/11 Torque Sensor Deviation Excessive

DESCRIPTION

The torque sensor converts the 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 Code DTC Detection Condition Trouble Area
C1511/11 A torque sensor signal 1 error or communication stop.

  • Harness or connector

  • Torque sensor (built into power steering link assembly)

  • Power steering ECU assembly
C1512/11 A torque sensor signal 2 error or communication stop.

  • Harness or connector

  • Torque sensor (built into power steering link assembly)

  • Power steering ECU assembly
C1513/11 Excessive torque malfunction

  • Harness or connector

  • Torque sensor (built into power steering link assembly)

  • Power steering ECU assembly

WIRING DIAGRAM

A000SONE10
*a Torque Sensor (Power Steering Link Assembly)
*b Power Steering ECU

CAUTION / NOTICE / HINT

Note


  • If the power steering ECU assembly is replaced 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.

PROCEDURE


  1. CHECK CONNECTORS


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

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

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

    B

    CONNECT CONNECTORS PROPERLY

    C

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    D

    REPLACE POWER STEERING LINK ASSEMBLY Click here

    A

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


    1. Disconnect the C7 power steering ECU 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) - Body ground Always 10 kΩ or higher
      C3-2 (INSN) - Body ground Always 10 kΩ or higher
      C3-5 (OUCS) - Body ground Always 10 kΩ or higher
      C3-6 (OUSN) - Body ground Always 10 kΩ or higher
      C3-1 (INCS) - Body ground Always 10 kΩ or higher
      C3-8 (TQG1) - Body ground Always 10 kΩ or higher
      C3-4 (TRQV) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT POWER STEERING LINK ASSEMBLY (TORQUE SENSOR)


    1. Disconnect the C3 torque sensor connector.

    2. A000Q5ME01
      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

    NG

    REPLACE POWER STEERING LINK ASSEMBLY Click here

    OK

  4. REPLACE POWER STEERING ECU ASSEMBLY


    1. Replace the power steering ECU assembly Click here.


    NEXT

  5. ASSIST MAP WRITING, INITIALIZE MOTOR ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT


    1. 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.


    NEXT

  6. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1511/11, C1512/11 or C1513/11 is not output A
      DTC C1511/11, C1512/11 or C1513/11 is output B

    A

    END

    B

    REPLACE POWER STEERING LINK ASSEMBLY Click here