VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1440

DTC Code DTC Name
C1440 Steering Angle Sensor Unusual Bank Angle Detected

DESCRIPTION

If the skid control ECU (brake actuator assembly) determines that the vehicle is being driven at a steep bank angle, the skid control ECU (brake actuator assembly) stores DTC C1440 while VSC operation is temporarily disabled.

It is not a malfunction if the system and sensor circuits are normal and if normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.

Tech Tips

DTC C1440 and the yaw rate and acceleration sensor DTC are stored when the skid control ECU (brake actuator assembly) determines that the vehicle is being driven at a steep bank angle and either of the following conditions is met:


  • The yaw rate sensor is installed at an angle.

  • The yaw rate sensor signal output is stuck.

DTC Code DTC Detection Condition Trouble Area
C1440 Driving at a steep bank angle. Yaw rate sensor assembly

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC


    1. Clear the DTC Click here.

    2. Turn the ignition switch off.

    3. Start the engine.

    4. Perform a road test.

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

      Result
      Result Proceed to
      DTC C1440 is output A
      DTC C1440 is not output B
      Yaw rate and acceleration sensor DTC is output C

    B

    END

    C

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    A

  2. CLEAR DTC


    1. Clear the DTC Click here.

      Tech Tips


      • If the skid control ECU (brake actuator assembly) determines that the vehicle is being driven at a steep bank angle, the skid control ECU stores DTC C1440 while VSC operation is temporarily disabled.

      • It is not a malfunction if the system and sensor circuits are normal and if normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.


    NEXT

    END