ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1210/36, C1336/98

DTC Code DTC Name
C1210/36 Zero Point Calibration of Yaw Rate Sensor Undone
C1336/98 Zero Point Calibration of Acceleration Sensor Undone

DESCRIPTION

The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system.

The yaw rate sensor has the built-in 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 and the CAN communication system, the DTCs U0123/62 (yaw rate sensor communication trouble) and U0124/95 (acceleration sensor communication trouble) are output.

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

DTC Code Information Code DTC Detection Condition Trouble Area
C1210/36 - Yaw rate sensor zero point calibration is unfinished.

  • Skid control ECU

  • Zero point calibration undone

  • Yaw rate and acceleration sensor
C1336/98 -

When either of the following is detected:


  1. The vehicle runs in the normal mode with zero point calibration undone.

  2. After the zero point has been obtained, the zero point voltage of the sensor is not between 2.38 and 2.62 V.

  • Skid control ECU

  • Zero point calibration undone

  • Yaw rate and acceleration sensor

INSPECTION PROCEDURE

Note

When replacing the skid control ECU, perform the following operations:


  • Initialization of linear solenoid valve and calibration Click here

  • Yaw rate and acceleration sensor zero point calibration Click here

Tech Tips

If a CAN communication malfunction DTC and a related sensor malfunction DTC are output at the same time, the CAN communication malfunction must be repaired before troubleshooting the sensor malfunction DTC.

PROCEDURE


  1. CHECK YAW RATE SENSOR INSTALLATION


    1. Check that the yaw rate sensor has been installed properly Click here.

      OK
      The sensor is tightened to the specified torque.
      The sensor is not tilted.

    NG

    INSTALL YAW RATE SENSOR CORRECTLY Click here

    OK

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


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


    NEXT

  3. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Turn the power switch ON (READY).

    3. Drive the vehicle at a speed of 35 km/h (24 mph) or more, and turn the steering wheel to the right and left.

    4. Check if the same DTCs are recorded Click here.

      Result
      Result Proceed to
      DTCs (C1210/36 and C1336/98) are output*1 A
      DTCs (C1210/36 and C1336/98) are not output*2 B

      Tech Tips


      • *1: The DTCs are recorded because zero point calibration has not been completed.

      • *2: End the procedure since the same DTCs are not recorded after completion of zero point calibration.


    B

    END

    A

  4. REPLACE YAW RATE SENSOR


    1. Replace the yaw rate sensor Click here.


    NEXT

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


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


    NEXT

  6. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Turn the power switch ON (READY).

    3. Drive the vehicle at a speed of 35 km/h (24 mph) or more, and turn the steering wheel to the right and left.

    4. Check if the same DTCs are recorded Click here.

      Result
      Result Proceed to
      DTCs (C1210/36 and C1336/98) are not output*1 A
      DTCs (C1210/36 and C1336/98) are output*2 for LHD B
      for RHD C

      Tech Tips


      • *1: End the procedure since the same DTCs are not recorded after completion of zero point calibration.

      • *2: The DTCs are recorded because zero point calibration has not been completed.


    B

    REPLACE SKID CONTROL ECU Click here

    C

    REPLACE SKID CONTROL ECU Click here

    A

    END