ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1434

DTC Code DTC Name
C1434 Steering Angle Sensor Output

DESCRIPTION

Steering angle sensor signals are input to the skid control ECU (brake booster with master cylinder assembly) via the CAN communication system.

Tech Tips

When a malfunction occurs in the communication line to the steering angle sensor, U0126 (Lost Communication With Steering Angle Sensor Module) is output.

If a DTC related to the CAN communication line is output, first troubleshoot the CAN communication line.

DTCs may be stored if one of the following occurs:


DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1434 Steering Angle Sensor Output 701 When communication is normal, a steering angle sensor malfunction is detected.

  • Steering angle sensor installed improperly

  • Wire harness or connector

  • Steering angle sensor

 VSC DTC

WIRING DIAGRAM

B006IISE79

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the power switch off.

    3. Turn the power switch on (IG) again and check that no CAN communication system DTCs are output.

      Click here

    4. Turn the power switch on (READY).

    5. Drive the vehicle at a speed of 35 km/h (22 mph), turn the steering wheel to the right and left, and check that no speed sensor and/or yaw rate and acceleration sensor DTCs are output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C1434 is output. A
      CAN communication system DTCs are output. B
      Speed sensor and/or yaw rate and acceleration sensor DTCs are output. C

      Tech Tips


      • If there is a malfunction in a speed sensor or the yaw rate and acceleration sensor (airbag sensor assembly), an abnormal value may be output even though the steering angle sensor is normal.

      • If speed sensor and yaw rate and acceleration sensor DTCs are output simultaneously, repair these malfunctions and inspect the steering angle sensor.


    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    C

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    A

  2. CHECK STEERING ANGLE SENSOR INSTALLATION


    1. Turn the power switch off.

    2. Check that the steering angle sensor has been installed properly.

      Click here

      OK
      The steering angle sensor installation is normal.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL STEERING ANGLE SENSOR CORRECTLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)


    1. B006ISUC34
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor)

      Remove the steering wheel and column cover.

    2. Make sure that there is no looseness at the locking part and the connecting part of the connector.

      OK
      The connector is securely connected.

    3. Disconnect the I58 steering angle sensor connector.

    4. Check both the connector case and the terminals for deformation and corrosion.

      OK
      No deformation or corrosion.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      I58-5 (BAT) - Body ground Always 11 to 14 V
      I58-4 (IG1) - Body ground Power switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

  4. CHECK HARNESS AND CONNECTOR (GND TERMINAL)


    1. B006ISUC35
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor)

      Turn the power switch off.

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

      Note

      Before measuring the resistance of the steering angle sensor, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or switches, or opening or closing the doors.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I58-1 (ESS) - Body ground 1 minute after power switch off Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEERING ANGLE SENSOR Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)