ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1210, C1336

DTC Code DTC Name
C1210 Zero Point Calibration of Yaw Rate Sensor undone
C1336 Zero Point Calibration of Deceleration Sensor undone

DESCRIPTION

The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 circuits (GL1, GL2).

The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via CAN communication.

Tech Tips

If there are malfunctions in the bus lines between the yaw rate and acceleration sensor (airbag ECU assembly) and the CAN communication system, DTC U0124 (Lost Communication with Lateral Acceleration Sensor Module) will be stored.

If a DTC related to the CAN communication line is output, first troubleshoot the CAN communication line.

These DTCs (C1210 and C1336) will also be stored when zero point calibration has not been completed.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1210 Zero Point Calibration of Yaw Rate Sensor undone 1139 Yaw rate sensor zero point calibration is incomplete.

  • Yaw rate sensor (airbag ECU assembly) installed improperly

  • Yaw rate sensor (airbag ECU assembly)

  • Skid control ECU (brake booster with master cylinder assembly)

 VSC DTC
C1336 Zero Point Calibration of Deceleration Sensor undone 1138 Acceleration sensor zero point calibration is incomplete.

  • Acceleration sensor (airbag ECU assembly) installed improperly

  • Acceleration sensor (airbag ECU assembly)

  • Skid control ECU (brake booster with master cylinder assembly)

 ABS DTC

CAUTION / NOTICE / HINT

Note


  • After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

    Click here

  • After replacing or reinstalling the yaw rate and acceleration sensor (airbag ECU assembly), perform yaw rate and acceleration sensor zero point calibration after clearing previously calibrated data.

    Click here

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.


      Chassis > ABS/VSC/TRC > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK DTC


    1. Turn the power switch off.

    2. Turn the power switch on (IG).

    3. Check if the same DTC is output.


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Only C1210 or C1336 is output A
      Other than above B

    B

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    A

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


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

      Tech Tips

      Click here

      Note

      Make sure to perform linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization after performing "Reset Memory" as the data stored during linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization is cleared.


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

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

    NEXT

  4. PERFORM TEST MODE (SIGNAL CHECK)


    1. 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.

      Tech Tips

      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

  5. CHECK AIRBAG ECU ASSEMBLY INSTALLATION


    1. Turn the power switch off.

    2. Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.

      Tech Tips

      Click here

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

    NG

    INSTALL AIRBAG ECU ASSEMBLY CORRECTLY Click here

    OK

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


    1. Select the Data List on the GTS.


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Deceleration Sensor Acceleration sensor 1

      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 1 Min.: -128 degrees/s, Max.: 127 degrees/s

      Vehicle stationary: 0 degrees/s

      Turning right: -128 to 0 degrees/s

      Turning left: 0 to 127 degrees/s

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

      Vehicle stationary: 0 degrees/s

      Turning right: -128 to 0 degrees/s

      Turning left: 0 to 127 degrees/s

      		 -

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

    2. 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 BOOSTER WITH MASTER CYLINDER ASSEMBLY for LHD: Click here
    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY for RHD: Click here

    NG

    REPLACE AIRBAG ECU ASSEMBLY Click here