VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1420

DTC Code DTC Name
C1420 Acceleration Sensor Malfunction

DESCRIPTION

This DTC is stored when the skid control ECU (brake actuator assembly) detects an abnormality in the difference between the acceleration sensor value and the control value estimated based on the yaw rate sensor, steering angle sensor and speed sensor signals.

The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1420 Acceleration Sensor Malfunction The difference between the acceleration sensor value and the control value estimated inside the skid control ECU (brake actuator assembly) is abnormal.

  • Acceleration sensor (airbag sensor assembly) installation

  • Acceleration sensor (airbag sensor assembly)

CAUTION / NOTICE / HINT

Note

After replacing or reinstalling the yaw rate and acceleration sensor (airbag sensor assembly), perform system variant learning and acceleration sensor zero point calibration.

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PROCEDURE


  1. CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION


    1. Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly.

      Click here

      OK
      The yaw rate and acceleration sensor (airbag sensor assembly) is tightened to the specified torque.
      The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    NG

    INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY Click here