VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1434

DTC Code DTC Name
C1434 Steering Angle Sensor Output Malfunction

DESCRIPTION

Steering angle sensor signals are sent to the skid control ECU (brake actuator assembly) via the CAN communication system. When there is a malfunction in the CAN communication system, it is detected by the steering angle sensor zero point malfunction diagnostic function.

DTC Code DTC Detection Condition Trouble Area
C1434 An error in communication between the skid control ECU and the steering angle sensor, or an abnormal steering angle sensor zero point.

  • ECU-B fuse

  • ECU-IG&GAUGE fuse

  • Steering angle sensor power supply

  • Steering angle sensor circuit

  • Steering angle sensor (Spiral cable sub-assembly)

WIRING DIAGRAM

Refer to DTC C1432 Click here.

INSPECTION PROCEDURE

Note


  • Do not remove the steering angle sensor from the spiral cable sub-assembly.

  • After replacing the spiral cable sub-assembly, confirm that the replacement part is of the correct specification.

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

  • Before disconnecting the connector, make sure that there are no problems with the connection.

  • After disconnecting the connector, make sure that the connector case and terminals are not deformed or corroded.

Tech Tips


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

  • When any of the speed sensors or the yaw rate sensor assembly has trouble, DTCs for the steering angle sensor may be stored even when the steering angle sensor is normal. When DTCs for the speed sensors or the yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate sensor assembly first, and then inspect and repair the steering angle sensor.

PROCEDURE


  1. CHECK DTC


    1. Clear the DTC Click here.

    2. Turn the ignition switch off.

    3. Start the engine.

    4. Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left.

    5. Check for DTC Click here.

      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

      Tech Tips


      • 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.

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


    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    C

    REPAIR CIRCUIT INDICATED BY OUTPUT DTC Click here

    A

  2. CHECK TERMINAL VOLTAGE (BAT TERMINAL)


    1. Turn the ignition switch off.

    2. Disconnect the steering angle sensor (spiral cable sub-assembly) connector.

    3. A01E0CZE33
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor [Spiral Cable Sub-assembly])

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S37-6 (BAT) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK TERMINAL VOLTAGE (IG TERMINAL)


    1. Turn the ignition switch off.

    2. Disconnect the steering angle sensor (spiral cable sub-assembly) connector.

    3. A01E0CZE34
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Steering Angle Sensor [Spiral Cable Sub-assembly])

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      S37-5 (IG) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (ESS TERMINAL)


    1. Turn the ignition switch off.

    2. Disconnect the steering angle sensor (spiral cable sub-assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S37-2 (ESS) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. RECONFIRM DTC


    1. Clear the DTC Click here.

    2. Turn the ignition switch off.

    3. Start the engine.

    4. Drive the vehicle at a speed of 35 km/h (22 mph) or more and turn the steering wheel to the right and left.

    5. Check if the same DTC is output Click here.

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

      Tech Tips

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


    B

    USE SIMULATION METHOD TO CHECK Click here

    A

    REPLACE SPIRAL CABLE SUB-ASSEMBLY Click here