VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1420

DTC Code DTC Name
C1420 Acceleration Sensor Malfunction

DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the acceleration sensor (yaw rate sensor) via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1420 Acceleration Sensor Malfunction After the difference between GL1 and GL2 becomes 0.6 G or more with the vehicle stationary, the difference remains 0.4 G or more for 60 seconds or more.

  • Sensor installation

  • Acceleration sensor (yaw rate sensor)

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CAUTION / NOTICE / HINT

Note

When replacing the acceleration sensor (yaw rate sensor), perform zero point calibration and store system information.

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Tech Tips

When DTC U0124 is output together with DTC C1420, inspect and repair the trouble areas indicated by DTC U0124 first Click here.

PROCEDURE


  1. CHECK YAW RATE SENSOR INSTALLATION


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

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      OK
      The acceleration sensor (yaw rate sensor) is tightened to the specified torque.
      The acceleration sensor (yaw rate sensor) is not installed in a tilted position.

      Note

      Check the acceleration sensor (yaw rate sensor) signal after replacement.

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      Tech Tips

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

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      Result
      Proceed to
      OK
      NG

    OK

    REPLACE YAW RATE SENSOR Click here

    NG

    INSTALL YAW RATE SENSOR CORRECTLY Click here