VEHICLE STABILITY CONTROL SYSTEM, 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 ECU assembly) via the CAN communication system.

The airbag ECU assembly has a built-in yaw rate and acceleration sensor 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 ECU assembly) and the CAN communication system, the DTC U0124 (Lost Communication with Lateral Acceleration Sensor Module) is output.

The DTCs are also output when the calibration has not been completed.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1210 Zero Point Calibration of Yaw Rate Sensor Undone Zero point calibration of yaw rate sensor undone.

  • Sensor installation

  • Yaw rate sensor (Airbag ECU assembly)

  • Skid control ECU (Brake actuator assembly)

 -
C1336 Zero Point Calibration of Acceleration Sensor Undone Zero point calibration of acceleration sensor undone.

  • Sensor installation

  • Acceleration sensor (Airbag ECU assembly)

  • Skid control ECU (Brake actuator assembly)

 -

CAUTION / NOTICE / HINT

Tech Tips

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

Click here

Note


  • When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information.

    Click here

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

    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

      Result
      Proceed to
      NEXT

    NEXT

  2. PERFORM TEST MODE (SIGNAL CHECK)


    1. Turn the engine switch off.

    2. Using the GTS, perform a Test Mode (signal check) inspection sensor check and check that all Test Mode (signal check) inspection items change from incomplete to complete.

      Click here


      Chassis > ABS/VSC/TRC > Utility
      Tester Display
      Signal Check
      OK
      All Test Mode (signal check) inspection items change from incomplete to complete

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  3. CHECK AIRBAG ECU ASSEMBLY INSTALLATION


    1. Turn the engine switch off.

    2. Check that the airbag ECU assembly has been installed properly.

      Click here

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

    NG

    INSTALL AIRBAG ECU ASSEMBLY CORRECTLY Click here

    OK

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


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. According to the display on the GTS, read the Data List.


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Deceleration Sensor Acceleration sensor

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

      		- During deceleration/acceleration: Changes continuously
      Deceleration Sensor2 Acceleration sensor 2

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

      		- During deceleration/acceleration: Changes continuously
      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

      		 -

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

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

      OK
      The yaw rate and acceleration sensor (airbag ECU assembly) output value is normal.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    NG

    REPLACE AIRBAG ECU ASSEMBLY Click here