VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1436

DTC Code DTC Name
C1436 Malfunction in Yaw Rate Sensor

DESCRIPTION

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

If there is a malfunction in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTC U0124 (Lost Communication with Lateral Acceleration Sensor Module) is stored.

This DTC is also output when calibration has not been completed.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1436 Malfunction in Yaw Rate Sensor

Either of the following is detected:


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

  2. Abnormal comparison value.

  • Improper yaw rate sensor (yaw rate and acceleration sensor) installation

  • Yaw rate sensor (yaw rate and acceleration sensor)

CAUTION / NOTICE / HINT

Note

When replacing or reinstalling the yaw rate and acceleration sensor, perform zero point calibration and store system information after clearing previously calibrated data.

Click here

Tech Tips

When U0124 output together with C1436, inspect and repair the trouble areas indicated by U0124 first.

Click here

PROCEDURE


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


    1. Select the Data List using the GTS.

      Click here


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

      Vehicle stopped: 0°/s

      Turning right: -128 to 0°/s

      Turning left: 0 to 127°/s

      		 -
      Yaw Rate Sensor2 Yaw rate sensor 2 Min.: -128°/s, Max.: 127°/s

      Vehicle stopped: 0°/s

      Turning right: -128 to 0°/s

      Turning left: 0 to 127°/s

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      Yaw Rate Sensor
      Yaw Rate Sensor2

    2. Check the yaw rate and acceleration sensor output value displayed on the GTS.

      Result
      Result Proceed to
      NG (The yaw rate and acceleration sensor output value is 0°/s when the vehicle is stationary, but the value fluctuates when turning.) A
      NG (The yaw rate and acceleration sensor output value is not 0°/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 YAW RATE AND ACCELERATION SENSOR Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION


    1. Turn the engine switch off.

    2. Check that the yaw rate and acceleration sensor has been installed properly.

      Click here

      OK
      The yaw rate and acceleration sensor is tightened to the specified torque.
      The yaw rate and acceleration sensor is not 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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE YAW RATE AND ACCELERATION SENSOR Click here

    NG

    INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Click here