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VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1434

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DTC Code DTC Name
C1434 Steering Angle Sensor Output Malfunction
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DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the steering angle sensor via CAN communication.

Tip:

If there is a malfunction in the bus lines between the steering angle sensor and the CAN communication system, DTCs U0073 (Control Module Communication Bus OFF), U0124 (Lost Communication with Lateral Acceleration Sensor Module) and/or U0126 (Lost Communication with Steering Angle Sensor Module) are output. When U0073, U0124 and/or U0126 are output together with C1434, inspect and repair the trouble areas indicated by U0073, U0124 and/or U0126 first.

DTCs may be stored if one of the following occurs:


DTC No. Detection Item DTC Detection Condition Trouble Area
C1434 Steering Angle Sensor Output Malfunction Error in communication between the skid control ECU (brake actuator assembly) and the steering angle sensor, or abnormal steering angle sensor zero point.

  • Sensor installation

  • Steering angle sensor power supply

  • Steering angle sensor
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

Tip:

  • 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.

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  • 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.

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PROCEDURE


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    CHECK DTC


    1. Clear the DTCs.

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      1. Chassis > ABS/VSC/TRC > Clear DTCs


    2. Turn the engine switch off.

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

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    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 and then check that no speed sensor or yaw rate and acceleration sensor DTCs are output.

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      1. Chassis > ABS/VSC/TRC > Trouble Codes


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

      • If 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.

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


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    CHECK STEERING ANGLE SENSOR INSTALLATION


    1. Turn the engine switch off.

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

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

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    CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)


    1. B0065P6C21
      *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.

    3. Disconnect the O28 steering angle sensor connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      O28-8 (BAT) - Body ground Always 11 to 14 V
      O28-4 (IG1) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

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    CHECK HARNESS AND CONNECTOR (GROUND TERMINAL)


    1. A01VNYVC22
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor)

      Turn the engine 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 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
      O28-1 (ESS) - Body ground 1 minute after turning engine switch off Below 1 Ω
      Tip:

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

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      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE STEERING ANGLE SENSORClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)