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 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 No.

Detection Item

DTC Detection Condition

Trouble Area

C1434

Steering Angle Sensor Output Malfunction

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 NO. 1 fuse

  • Steering angle sensor power supply

  • 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.

  • When 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.

Tip:

  • When DTC U0073, U0123, U0124 and/or U0126 is output together with DTC C1434, inspect and repair the trouble areas indicated by DTC U0073, U0123, U0124 and/or U0126 first (Click here).

  • When any of the speed sensors or the yaw rate and acceleration sensor 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 yaw rate and acceleration sensor are output together with DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate and acceleration sensor first, and then inspect and repair the steering angle sensor.

PROCEDURE

  1. CHECK DTC

    1. Check for DTCs.

      Click here

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

      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
      Tip:

      • 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.

      Chassis > ABS/VSC/TRC > Trouble Codes

    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 (IG, BAT)

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

    2. Disconnect the G21 steering angle sensor connector.

    3. C207362C01

      *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

      Switch Condition

      Specified Condition

      G21-5 (IG) - Body ground

      Engine switch on (IG)

      11 to 14 V

      G21-6 (BAT) - Body ground

      Always

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

  3. CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)

    1. Turn the engine switch off.

    2. Disconnect the G21 steering angle sensor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G21-2 (ESS) - Body ground

      Always

      Below 1 Ω

      Result

      Result

      OK

      NG
    OK

    REPLACE SPIRAL CABLE SUB-ASSEMBLY

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)