ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ Vacuum Brake Booster), Diagnostic DTC:C1442, C1443

DTC Code DTC Name
C1442 Invalid Data Received from Deceleration Sensor
C1443 Invalid Data Received from Yaw Rate Sensor

DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the acceleration sensor (yaw rate sensor) via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1442 Invalid Data Received from Deceleration Sensor When voltage at terminal +BS is 9.5 to 17.4 V, sensor invalid information received from acceleration sensor is ON continuously for 10 seconds or more. Acceleration sensor (yaw rate sensor) -
C1443 Invalid Data Received from Yaw Rate Sensor When voltage at terminal +BS is 9.5 to 17.4 V, sensor invalid information received from yaw rate sensor is ON continuously for 10 seconds or more. Yaw rate sensor -

CAUTION / NOTICE / HINT

Note

When replacing the acceleration sensor (yaw rate sensor), perform zero point calibration and store system information.

Click here

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the engine switch off.

    3. Start and idle the engine for 60 seconds, and then stop the engine.

    4. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTCs C1442 and C1443 are not output. A
      DTCs C1442 and/or C1443 are output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE YAW RATE SENSOR Click here