VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster), Diagnostic DTC:C1440

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

DESCRIPTION

If the skid control ECU 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 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 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 is installed at an angle.

  • The yaw rate and acceleration sensor signal output is stuck.

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

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs Click here.

    2. Perform a road test.

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


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    END