POWER STEERING SYSTEM, Diagnostic DTC:C1511, C1512, C1513, C1514

DTC Code DTC Name
C1511 Torque Sensor Circuit Malfunction
C1512 Torque Sensor Circuit Malfunction
C1513 Torque Sensor Circuit Malfunction
C1514 Torque Sensor Power Supply Abnormal

DESCRIPTION

The torque sensor converts the rotation torque input from the steering wheel into electric signals and sends them to the power steering ECU.

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

  • Steering column assembly (Torque sensor)

  • Power steering ECU
C1512 Torque sensor (TRQ2) signal error or stop
C1513 Deviation between torque sensor TRQ1 and TRQ2 exceeds specified value
C1514 Torque sensor power source voltage error

WIRING DIAGRAM

A017EKWE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION (TORQUE SENSOR - POWER STEERING ECU)


    1. Check the installation condition of the torque sensor connector.

      OK
      Torque sensor connector is securely installed to the power steering ECU.
      Result
      Result Proceed to
      NG A
      OK B

    B

    CHECK TORQUE SENSOR Click here

    A

  2. RECONFIRM DTC


    1. Reinstall the torque sensor connector.

    2. Check for DTCs Click here.

      OK
      DTC is not output.
      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    B

    END

    A

  3. CHECK TORQUE SENSOR


    1. A017EXZE02

      Turn the ignition switch on (IG).

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

      Standard voltage
      Tester Connection Condition Specified Condition
      z5-1 (TRQ1) - z5-6 (TRQG) Steering wheel not turned (without load) 2.3 to 2.7 V
      Steering wheel turned to right with vehicle stopped 2.5 to 4.04 V
      Steering wheel turned to left with vehicle stopped 0.95 to 2.5 V
      z5-5 (TRQ2) - z5-6 (TRQG) Steering wheel not turned (without load) 2.3 to 2.7 V
      Steering wheel turned to right with vehicle stopped 0.95 to 2.5 V
      Steering wheel turned to left with vehicle stopped 2.5 to 4.04 V
      z5-3 (TRQF) - z5-6 (TRQG) Always 3.35 to 3.37 V
      z5-4 (TRQV) - z5-6 (TRQG) Always 8.5 to 10.5 V

    NG

    REPLACE STEERING COLUMN ASSEMBLY Click here

    OK

    REPLACE POWER STEERING ECU Click here