VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1240

DTC Code DTC Name
C1240 Yaw Rate Sensor Discrimination

DESCRIPTION

The skid control ECU determines if the yaw rate and acceleration sensor identification information sent via CAN communication matches the yaw rate and acceleration sensor identification information memorized by the skid control ECU.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1240

Yaw Rate Sensor Discrimination

The yaw rate and acceleration sensor identification information memorized by the skid control ECU does not match the yaw rate and acceleration sensor identification information sent via CAN communication for 1 second or more.

  • Proper yaw rate and acceleration sensor not installed

  • Master cylinder solenoid (Skid Control ECU)

CAUTION / NOTICE / HINT

Note:

  • When replacing the yaw rate and acceleration sensor, perform calibration (Click here).

  • When replacing the master cylinder solenoid, perform calibration (Click here).

PROCEDURE

  1. CHECK PART NUMBER (YAW RATE AND ACCELERATION SENSOR)

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

      OK

      Proper yaw rate and acceleration sensor installed.

      Result

      Result

      OK

      NG
    NG

    REPLACE YAW RATE AND ACCELERATION SENSOR

    Click here

    OK

  2. RECONFIRM DTC

    1. Clear the DTCs.

      Click here

      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the engine switch off.

    3. Check if the same DTC is output.

      Click here

      Result

      Result

      Proceed to

      DTC is not output

      A

      DTC is output

      B

      Chassis > ABS/VSC/TRC > Trouble Codes

    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

    REPLACE MASTER CYLINDER SOLENOID

    Click here