VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1436

DTC Code DTC Name
C1436 Yaw Rate Sensor Malfunction

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
C1436

Either of the following is detected:


  1. With the vehicle stationary, the yaw rate and acceleration sensor output value is not 0 degrees/s.

  2. Abnormal comparison value.

  • Sensor installation

  • Yaw rate and acceleration sensor (Airbag sensor assembly)

INSPECTION PROCEDURE

Note

When replacing the yaw rate and acceleration sensor (airbag sensor assembly), perform zero point calibration Click here.

PROCEDURE


  1. READ VALUE USING GTS (YAW RATE AND ACCELERATION SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Select the Data List using the GTS Click here.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Yaw Rate Sensor Yaw rate sensor / Min.: -128 degrees/s, Max.: 127 degrees/s

      Vehicle stopped: 0 degrees/s

      Turning right: -128 to 0 degrees/s

      Turning left: 0 to 127 degrees/s

      		 -

    4. Check the yaw rate and acceleration sensor (airbag sensor assembly) output value displayed on the GTS.

      Result
      Result Proceed to
      NG (The yaw rate and acceleration sensor (airbag sensor assembly) output value is 0 degrees/s when the vehicle is stationary, but the value fluctuates when turning.) A
      NG (The yaw rate and acceleration sensor (airbag sensor assembly) output value is not 0 degrees/s when the vehicle is stationary.) B
      OK C

      Note

      Check the yaw rate and acceleration sensor signal after replacement Click here.

      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 Click here.


    B

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION


    1. Turn the engine switch off.

    2. 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.

      Note

      Check the yaw rate and acceleration sensor signal after replacement Click here.

      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 Click here.


    NG

    INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY Click here

    OK

    REPLACE AIRBAG SENSOR ASSEMBLY Click here