ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1442/44, C1443/34

DTC Code DTC Name
C1442/44 Invalid Data Received from Acceleration Sensor
C1443/34 Invalid Data Received from Yaw Rate Sensor

DESCRIPTION

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

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

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1442/44 Invalid Data Received from Acceleration Sensor 322 With terminal IG1 voltage between 9.5 and 17.4 V, an invalid data signal is received from the acceleration sensor for 10 seconds or more. Acceleration sensor (Yaw rate sensor) ABS DTC
C1443/34 Invalid Data Received from Yaw Rate Sensor 340 With terminal IG1 voltage between 9.5 and 17.4 V, an invalid data signal is received from the yaw rate sensor for 10 seconds or more. Yaw rate sensor VSC DTC
DTC No. Brake warning light / yellow (minor malfunction) code ABS warning light code Slip indicator light code Brake hold standby indicator light code
C1442 36 44 43 21
C1443 - - 34 -

CAUTION / NOTICE / HINT

Note

When replacing the yaw rate sensor, perform initialization and calibration of the linear solenoid valve.

Click here

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Turn the power switch off.

    3. Turn the power switch on (IG).

    4. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTCs C1442/44 and C1443/34 are not output. A
      DTCs C1442/44 and/or C1443/34 are output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE YAW RATE SENSOR Click here