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ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1210, C1336

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DTC Code DTC Name
C1210 Zero Point Calibration of Yaw Rate Sensor Undone
C1336 Zero Point Calibration of Acceleration Sensor Undone
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DESCRIPTION

The skid control ECU assembly receives signals from the yaw rate sensor via CAN communication.

The yaw rate sensor detects the vehicle condition using 2 circuits (GL1, GL2).

Tip:

If there are malfunctions in the bus lines between the yaw rate sensor and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) will be stored.

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 336 Yaw rate sensor zero point calibration is incomplete.

  • Zero point calibration undone

  • Yaw rate sensor

  • Skid control ECU assembly

(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)

 -
C1336 Zero Point Calibration of Acceleration Sensor Undone 318

Any of the following is detected:


  1. Acceleration sensor zero point calibration is incomplete.

  2. The vehicle is driven normally without zero point calibration completed.

  3. After completing zero point calibration, zero point voltage of the sensor is not within the range of 2.38 to 2.62 V.

  • Zero point calibration undone

  • Acceleration sensor (yaw rate sensor)

  • Skid control ECU assembly

(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)

 -
Table 1. DTC Detection Conditions: C1336 INF Code: 318
  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3
Diagnosis Condition After zero point calibration is completed - - ○
Malfunction Status Zero point calibration of the acceleration sensor is incomplete ○ - -
Driving in normal mode with zero point calibration incomplete - ○ -
The zero point voltage of the acceleration sensor is not within the specified range of 2.38 to 2.62 V - - ○
Detection Time - - -
Number of Trips 1 trip 1 trip 1 trip
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CAUTION / NOTICE / HINT

Note:

When replacing the skid control ECU assembly or yaw rate sensor, perform initialization and calibration of the linear solenoid valve.

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Tip:

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

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PROCEDURE


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    PERFORM ZERO POINT CALIBRATION OF YAW RATE SENSOR


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

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      Note:

      Make sure to perform initialization and calibration of the linear solenoid valve after performing "Reset Memory" as the data stored during linear solenoid valve offset learning is cleared.


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





      1. Chassis > ABS/VSC/TRC > Utility
        Tester Display
        Test Mode




      Tip:

      • When the stored zero point of the yaw rate sensor is cleared, steering sensor zero point will also be cleared.

      • If the zero point and output value of the yaw rate sensor and the output value of the speed sensors are not normal, steering sensor zero point cannot be acquired normally even if the vehicle is driven straight ahead at 35 km/h (22 mph) or more.

      Result
      Proceed to
      NEXT

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    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.

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      1. 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

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    CHECK YAW RATE SENSOR INSTALLATION


    1. Turn the power switch off.

    2. Check that the yaw rate sensor has been installed properly.

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      OK
      The yaw rate sensor is tightened to the specified torque.
      The yaw rate sensor is not tilted.
      Result
      Proceed to
      OK
      NG

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    CHECK DTC


    1. Check the output DTC.

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      1. Chassis > ABS/VSC/TRC > Trouble Codes


      Result
      Result Proceed to
      DTC C1336 is output. A
      DTC C1210 is output. B

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    READ VALUE USING GTS (ACCELERATION SENSOR)


    1. Select the Data List on the GTS.

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      1. 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




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





    2. Check the acceleration sensor (yaw rate sensor) output value displayed on the GTS.

      OK
      The acceleration sensor (yaw rate sensor) output value is normal.
      Result
      Proceed to
      OK
      NG

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    READ VALUE USING GTS (YAW RATE SENSOR)


    1. Select the Data List on the GTS.

      Click here


      1. Chassis > ABS/VSC/TRC > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Yaw Rate Sensor Yaw rate sensor 1 Min.: -128 °/s, Max.: 127 °/s

        Vehicle stationary: 0 °/s

        Turning right: -128 to 0 °/s

        Turning left: 0 to 127 °/s

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

        Vehicle stationary: 0 °/s

        Turning right: -128 to 0 °/s

        Turning left: 0 to 127 °/s

        		 -




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





    2. Check the yaw rate sensor output value displayed on the GTS.

      OK
      The yaw rate sensor output value is normal.
      Result
      Proceed to
      OK
      NG