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 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.

DTC No. DTC Detection Condition Trouble Area
C1420 Difference between the acceleration sensor value and the control value estimated inside the skid control ECU is abnormal.

  • Sensor installation

  • Yaw rate and acceleration sensor (for separate type)

  • Yaw rate and acceleration sensor (Airbag sensor assembly) (for built-in type)

INSPECTION PROCEDURE

PROCEDURE


  1. CONFIRM YAW RATE AND ACCELERATION SENSOR TYPE


    1. Confirm the yaw rate and acceleration sensor type.

      Result
      Result Proceed to
      Yaw rate and acceleration sensor (for separate type) A
      Yaw rate and acceleration sensor (airbag sensor assembly) (for built-in type) B

    B

    CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION Click here

    A

  2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION


    1. Check that the yaw rate and acceleration sensor has been installed properly Click here.

      OK
      The sensor should be tightened to the specified torque.
      The sensor should not be installed in a tilted position.

      Tech Tips

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts Click here.


    NG

    INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Click here

    OK

    REPLACE YAW RATE AND ACCELERATION SENSOR Click here

  3. 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 sensor should be tightened to the specified torque.
      The sensor should not be installed in a tilted position.

      Tech Tips

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts Click here.


    NG

    INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY Click here

    OK

    REPLACE AIRBAG SENSOR ASSEMBLY Click here