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 a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).

If there are any problems in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123/62 (Lost Communication with Yaw Rate Sensor Module) and U0124/95 (Lost Communication with Lateral Acceleration Sensor Module) will be output.

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

DTC Code INF Code DTC Detection Condition Trouble Area
C1210/36 336 Yaw rate sensor zero point calibration is unfinished.

  • Skid control ECU

  • Yaw rate and acceleration sensor

  • Zero point calibration undone

    (Perform zero point calibration and check for DTCs.

    If this DTC is not output again, the sensor is normal)
C1336/98 318

Either of the following is detected:


  1. The vehicle speed is driven in normal mode with zero point calibration unfinished.

  2. Zero point calculation is not within specified range (2.38 to 2.62 V) when zero point calibration is finished.

  • Skid control ECU

  • Yaw rate and acceleration sensor

  • Zero point calibration undone

    (Perform zero point calibration and check for DTCs.

    If this DTC is not output again, the sensor is normal)

INSPECTION PROCEDURE

Note


  • When replacing the skid control ECU, perform initialization and calibration of the linear solenoid valve Click here.

  • When replacing the yaw rate and acceleration sensor, perform zero point calibration Click here.

Tech Tips

When U0123/62 and/or U0124/95 is output together with C1210/36 and/or C1336/98, inspect and repair trouble areas indicated by U0123/62 and/or U0124/95 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.


    NEXT

  2. RECONFIRM DTC


    1. Turn the power switch off.

    2. Clear the DTCs Click here.

    3. Turn the power switch on (READY).

    4. Drive the vehicle at a speed of 30 km/h (18 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.

    5. Check if the same DTC is recorded Click here.

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

      Tech Tips


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

      • End the procedure because the same DTCs are not recorded after completion of zero point calibration.


    B

    END

    A

  3. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION


    1. Turn the power switch off.

    2. Check that the yaw rate and acceleration sensor has been installed properly Click here.

      OK
      The sensor bolt should be tightened to the specified torque.
      The sensor should not be tilted.

    NG

    INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Click here

    OK

  4. REPLACE YAW RATE AND ACCELERATION SENSOR


    1. Replace the yaw rate and acceleration sensor Click here.

      Note

      Check the yaw rate and acceleration sensor signal after replacement Click here.


    NEXT

  5. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Turn the power switch on (READY).

    3. Drive the vehicle at a speed of 30 km/h (18 mph) or more, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.

    4. Check if the same DTC is recorded Click here.

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

    B

    END

    A

    REPLACE SKID CONTROL ECU Click here