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ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1240/95, C1240/75

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DTC Code DTC Name
C1240/95 Yaw Rate Sensor Discrimination
C1240/75 Yaw Rate Sensor Discrimination (Test Mode DTC)
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DESCRIPTION

DTC C1240/75 will be cleared when the yaw rate and acceleration sensor sends a yaw rate and/or acceleration signal or when Test Mode ends. DTC C1240/75 is output only in Test Mode.

DTC Code INF Code DTC Detection Condition Trouble Area
C1240/95 321 The yaw rate and acceleration sensor identification information stored in the skid control ECU is not consistent with the yaw rate and acceleration sensor identification information sent via CAN communication continuously for 1 second or more.

  • Yaw rate and acceleration sensor

  • Skid control ECU
C1240/75 - Detected only during Test Mode. Yaw rate and acceleration sensor
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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).

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PROCEDURE


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    CHECK PART NUMBER (YAW RATE AND ACCELERATION SENSOR)


    1. Check that the proper yaw rate and acceleration sensor is installed.

      OK
      Proper sensor is installed.

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    RECONFIRM DTC


    1. Clear the DTCs (Click here).

    2. Check if the same DTC is recorded (Click here).

      Result
      Result Proceed to
      DTC (C1240/95) is not output A
      DTC (C1240/95) is output B

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    CHECK FOR INTERMITTENT PROBLEMSClick here

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    REPLACE YAW RATE AND ACCELERATION SENSORClick here

  5. Click here

    REPLACE SKID CONTROL ECUClick here