VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1336

DTC Code DTC Name
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 CAN communication.

The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2). If a communication error with the yaw rate and acceleration sensor (airbag sensor assembly) is detected, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0151 (Lost Communication with Airbag ECU) are stored.

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

DTC No. Detection Item DTC Detection Condition Trouble Area
C1336 Zero Point Calibration of Acceleration Sensor Undone Zero point calibration of acceleration sensor undone.

  • Acceleration sensor (airbag sensor assembly) installation

  • Acceleration sensor (airbag sensor assembly)

  • Skid control ECU (brake actuator assembly)

CAUTION / NOTICE / HINT

Note


  • When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration.

    Click here

  • After replacing or reinstalling the yaw rate and acceleration sensor (airbag sensor assembly), perform system variant learning and acceleration sensor zero point calibration.

    Click here

Tech Tips

When U0123 and/or U0151 is output together with C1336, inspect and repair the trouble areas indicated by U0123 and/or U0151 first.

Click here

PROCEDURE


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


    1. Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Test Mode.

    2. Perform zero point calibration of the yaw rate and acceleration sensor.

      Click here


      Chassis > ABS/VSC/TRC > Utility
      Tester Display
      Test Mode
      Result
      Proceed to
      NEXT

    NEXT

  2. PERFORM TEST MODE INSPECTION (SIGNAL CHECK)


    1. Turn the ignition switch off.

    2. Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Signal Check.

    3. 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
      Result
      Proceed to
      OK
      NG

    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) has been installed properly.

      Click here

      OK
      The yaw rate and acceleration sensor (airbag sensor assembly) is tightened to the specified torque.
      The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY Click here

    OK

  4. READ VALUE USING GTS (ACCELERATION SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

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


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

      Min.: -18.525 m/s2

      Max.: 18.387 m/s2

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

      Min.: -18.525 m/s2

      Max.: 18.387 m/s2

      		- During deceleration/acceleration: Changes continuously

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

    4. 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.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here