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 there is trouble in the bus lines between the yaw rate and acceleration sensor (airbag sensor 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
C1336 Zero Point Calibration of Acceleration Sensor Undone Zero point calibration of acceleration sensor undone.

  • Sensor 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 zero point calibration and store system information.

    Click here

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

    Click here

Tech Tips

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


      Chassis > ABS/VSC/TRC/EPB > Utility
      Tester Display
      Reset Memory

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

    NEXT

  2. PERFORM TEST MODE INSPECTION (SIGNAL CHECK)


    1. Turn the ignition 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/EPB > 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 sensor should be tightened to the specified torque.
      The sensor should not be installed in a tilted position.
      Result
      Proceed to
      OK
      NG

    NG

    INSTALL AIRBAG SENSOR 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 ignition switch to ON.

    3. Select the Data List using the GTS.

      Click here


      Chassis > ABS/VSC/TRC/EPB > 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 reading

      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/EPB > Data List
      Tester Display
      Deceleration Sensor
      Deceleration Sensor2
      Yaw Rate Sensor

    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.

      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
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    C

    REPLACE AIRBAG SENSOR ASSEMBLY Click here