VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1434

DTC Code DTC Name
C1434 Steering Angle Sensor Output Malfunction

DESCRIPTION

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

Tech Tips

When a malfunction occurs in the communication line to the steering angle sensor, U0126 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 DTC Detection Condition Trouble Area Note
C1434 Steering Angle Sensor Output Malfunction Normal communication between the skid control ECU and the steering angle sensor and abnormal steering angle sensor zero point.

  • Sensor installation

  • Steering angle sensor

  • Wire harness or connector

  • Backup boost converter circuit (w/ stop and start system)

  • Skid control ECU (brake actuator assembly)

 -

WIRING DIAGRAM

Refer to DTC C1432.

Click here

CAUTION / NOTICE / HINT

Note

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

Tech Tips


  • When U0073, U0124 and/or U0126 is output together with C1434, inspect and repair the trouble areas indicated by U0073, U0124 and/or U0126 first.

    Click here

  • When a speed sensor, or the yaw rate sensor (airbag sensor assembly) is malfunctioning, DTCs for the steering angle sensor may be stored even though the steering angle sensor is normal. When DTCs for a speed sensor, or yaw rate sensor (airbag sensor assembly) are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor or yaw rate sensor (airbag sensor assembly) first, and then inspect and repair the steering angle sensor (for optitron meter type).

    When a speed sensor, or the yaw rate and acceleration sensor is malfunctioning, DTCs for the steering angle sensor may be stored even though the steering angle sensor is normal. When DTCs for a speed sensor, or yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor or yaw rate and acceleration sensor first, and then inspect and repair the steering angle sensor (for TFT meter type).

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC/EPB > Clear DTCs

    2. Turn the engine switch off.

    3. Turn the engine switch on (IG) again and check that no CAN communication system DTC is output.

      Click here

    4. Start the engine.

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

      Click here


      Chassis > ABS/VSC/TRC/EPB > Trouble Codes

      Tech Tips


      • If there is a malfunction in any of the speed sensors or the yaw rate and acceleration sensor (airbag sensor assembly), an abnormal value may be output although the steering angle sensor is normal (for optitron meter type).

        If there is a malfunction in any of the speed sensors or the yaw rate and acceleration sensor, an abnormal value may be output although the steering angle sensor is normal (for TFT meter type).

      • If speed sensor and yaw rate and acceleration sensor (airbag sensor assembly) DTCs are output simultaneously, repair these two sensors first and inspect the steering angle sensor (for optitron meter type).

        If speed sensor and yaw rate and acceleration sensor DTCs are output simultaneously, repair these two sensors first and inspect the steering angle sensor (for TFT meter type).

      Result
      Result Proceed to
      No CAN communication system, speed sensor, or yaw rate and acceleration sensor DTCs are output. A
      CAN communication system DTC is output. B
      Speed sensor or yaw rate and acceleration sensor DTC is output. C

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    C

    REPAIR CIRCUIT INDICATED BY OUTPUT DTC Click here

    A

  2. CHECK STEERING ANGLE SENSOR INSTALLATION


    1. Turn the engine 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 TERMINAL VOLTAGE (BAT TERMINAL)


    1. Remove the steering wheel and the column cover lower.

      Click here

    2. B005QGMC83
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor)

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

      Note

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

    3. Disconnect the J32 steering angle sensor connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J32-5 (BAT) - Body ground 1 minute after engine switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BAT CIRCUIT)

    OK

  4. CHECK TERMINAL VOLTAGE (IG TERMINAL)


    1. Turn the engine switch on (IG).

    2. B005QGMC84
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      J32-4 (IG1) - Body ground Engine switch on (IG) 10.5 to 16 V
      Result
      Result Proceed to
      OK A
      NG (w/o Stop and Start System) B
      NG (w/ Stop and Start System) C

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IG CIRCUIT)

    C

    INSPECT STOP AND START SYSTEM (BACKUP BOOST CONVERTER CIRCUIT) Click here

    A

  5. CHECK HARNESS AND CONNECTOR (ESS TERMINAL)


    1. Turn the engine switch off.

    2. B005QGMC85
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor)

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

      Note

      Before measuring the resistance of the steering angle sensor, turn the engine 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
      J32-1 (ESS) - Body ground 1 minute after turning engine switch off Below 1 Ω

      Tech Tips

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEERING ANGLE SENSOR Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ESS CIRCUIT)