POWER STEERING SYSTEM(for Manual Tilt and Manual Telescopic Steering Column), Diagnostic DTC:C1511/11, C1512/11, C1513/11, C1514/11

DTC Code DTC Name
C1511/11 Torque Sensor 1 Malfunction
C1512/11 Torque Sensor 2 Malfunction
C1513/11 Torque Sensor Deviation Excessive
C1514/11 Torque Sensor Power Supply Voltage Malfunction

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition
C1511/11 Torque Sensor 1 Malfunction Torque sensor malfunction

  • Torque sensor (Electric power steering column sub-assembly)

  • Power steering ECU assembly

 On Engine switch on (IG) again
C1512/11 Torque Sensor 2 Malfunction Torque sensor malfunction

  • Torque sensor (Electric power steering column sub-assembly)

  • Power steering ECU assembly

 On Engine switch on (IG) again
C1513/11 Torque Sensor Deviation Excessive Torque sensor malfunction

  • Torque sensor (Electric power steering column sub-assembly)

  • Power steering ECU assembly

 On Engine switch on (IG) again
C1514/11 Torque Sensor Power Supply Voltage Malfunction Torque sensor malfunction

  • Torque sensor (Electric power steering column sub-assembly)

  • Power steering ECU assembly

 On Engine switch on (IG) again

WIRING DIAGRAM

A01HEO5E07

CAUTION / NOTICE / HINT

Note

If the power steering ECU assembly has been replaced, perform assist map writing.

Click here

PROCEDURE


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


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

      OK
      Torque sensor connector is securely connected to the power steering ECU assembly.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT CONNECTOR

    OK

  2. CHECK POWER STEERING ECU ASSEMBLY (TRQV, TRQF VOLTAGE)


    1. A01HGBVC05
      *a

      Component with harness connected

      (Power Steering ECU Assembly)

      Start the engine.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      a-3 (TRQV) - a-1 (TRQG) Engine running 8.5 to 10.5 V
      a-5 (TRQF) - a-1 (TRQG) Engine running 3.35 to 3.37 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    OK

  3. CHECK POWER STEERING ECU ASSEMBLY (TRQ1, TRQ2 VOLTAGE)


    1. A01HGBVC06
      *a

      Component with harness connected

      (Power Steering ECU Assembly)

      Start the engine.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      a-7 (TRQ1) - a-1 (TRQG)

      Engine running

      Steering wheel not being turned (without load)

      		 2.3 to 2.7 V

      Engine running

      Steering wheel being turned to the right with vehicle stopped

      		 2.5 to 4.7 V

      Engine running

      Steering wheel being turned to the left with vehicle stopped

      		 0.3 to 2.5 V
      a-2 (TRQ2) - a-1 (TRQG)

      Engine running

      Steering wheel not being turned (without load)

      		 2.3 to 2.7 V

      Engine running

      Steering wheel being turned to the right with vehicle stopped

      		 0.3 to 2.5 V

      Engine running

      Steering wheel being turned to the left with vehicle stopped

      		 2.5 to 4.7 V

    3. Under each condition, measure the voltage at terminals TRQ1 and TRQ2, and calculate the sum.

      Standard Voltage
      Tester Connection Condition Specified Condition
      Sum of voltage between a-7 (TRQ1) and a-1 (TRQG) and voltage between a-2 (TRQ2) and a-1 (TRQG)

      Engine running

      Steering wheel not being turned (without load)

      		 Between 4.85 V and 5.35 V

      Engine running

      Steering wheel being turned to the right with vehicle stopped

      Engine running

      Steering wheel being turned to the left with vehicle stopped
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here

    NG

    REPLACE ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY Click here