VEHICLE STABILITY CONTROL SYSTEM(for Vacuum Brake Booster), Diagnostic DTC:C1210, C1336

DTC Code DTC Name
C1210 Zero Point Calibration of Yaw Rate Sensor Undone
C1336 Zero Point Calibration of Acceleration Sensor Undone

DESCRIPTION

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

The yaw rate sensor has a built-in airbag sensor assembly and detects the vehicle's condition using 2 circuits (GL1, GL2). If there is trouble in the bus lines between the yaw rate and acceleration sensor (airbag sensor assembly) and the CAN communication system, DTCs U0123 (yaw rate sensor communication trouble) and U0124 (acceleration sensor communication trouble) are stored.

The DTCs are also stored when calibration has not been completed.

DTC Code DTC Detection Condition Trouble Area
C1210 Zero point calibration of the yaw rate sensor is incomplete.

  • Yaw rate and sensor (Airbag sensor assembly)

  • Skid control ECU (Brake actuator assembly)
C1336 Zero point calibration of the acceleration sensor is incomplete.

  • Acceleration sensor (Airbag sensor assembly)

  • Skid control ECU (Brake actuator assembly)

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly) and/or yaw rate and acceleration sensor (airbag sensor assembly), perform calibration Click here.

Tech Tips

When DTC U0123, U0124 and/or U0126 is output along with DTC C1210 and/or C1336, inspect and repair trouble areas indicated by DTC U0123, U0124 and/or U0126 first Click here.

PROCEDURE


  1. PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR


    1. Perform zero point calibration of the yaw rate and acceleration sensor Click here.


    NEXT

  2. PERFORM TEST MODE (SIGNAL CHECK)


    1. Turn the ignition switch off.

    2. Perform the sensor check in the test mode procedure Click here.

      OK
      All test mode DTCs are cleared.

    OK

    END

    NG

  3. CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION


    1. Turn the ignition switch off.

    2. Check that the yaw rate and acceleration sensor (airbag sensor assembly) is installed properly Click here.

      OK
      The sensor is tightened to the specified torque.
      The sensor is not installed at an angle.

    NG

    INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY Click here

    OK

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


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

      ABS/VSC/TRC
      Tester Display

      Measurement

      Item/Range

      		 Normal Condition Diagnostic Note
      Deceleration Sensor

      Acceleration sensor/ Min.: -18.525 m/s2, Max.: 18.387 m/s2

      		- Changes continuously during acceleration/deceleration.
      Deceleration Sensor2

      Acceleration sensor 2/ Min.: -18.525 m/s2, Max.: 18.387 m/s2

      		- Changes continuously during acceleration/deceleration.
      Yaw Rate Sensor Yaw rate sensor/ Min.: -128°/s, Max.: 127°/s

      Vehicle stationary: 0°/s

      Right turn: -128 to 0°/s

      Left turn: 0 to 127°/s

      		 -

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

      OK
      The yaw rate and acceleration sensor (airbag sensor assembly) output value is normal.

      Note

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


    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here