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 the 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 and acceleration sensor (airbag sensor assembly) is installed at an angle.

  • The yaw rate and acceleration sensor (airbag sensor assembly) signal output is stuck.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1440 Steering Angle Sensor Unusual Bank Angle Detected Driving at a steep bank angle Yaw rate and acceleration sensor (Airbag sensor assembly)

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Perform a road test.

    3. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Proceed to
      DTC C1440 is output
      DTC C1440 is not output
      Yaw rate and acceleration sensor DTC is output

    DTC C1440 is not output

    END

    Yaw rate and acceleration sensor DTC is output

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    DTC C1440 is output

  2. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

      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 (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 the normal VSC operation resumes, which automatically clears DTC C1440, after the vehicle is returned to a normal position.

      Result
      Proceed to
      NEXT

    NEXT

    END