LANE-KEEPING ASSIST SYSTEM, Diagnostic DTC:C1A46

DTC Code DTC Name
C1A46 Yaw Rate Sensor

DESCRIPTION

The skid control ECU receives vehicle stability signals from the yaw rate sensor and sends the signals to the driving support ECU. If the skid control ECU detects that the yaw rate sensor is malfunctioning, the skid control ECU sends a malfunction signal to the driving support ECU and the driving support ECU stores DTC C1A46.

DTC Code DTC Detection Condition Trouble Area
C1A46 While the vehicle speed is 48 km/h (30 mph) or more with the lane-keeping assist main switch on, a yaw rate sensor malfunction signal sent from the skid control ECU to the driving support ECU is detected for 1 second.

  • Electrically controlled brake system

  • Driving support ECU

PROCEDURE


  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Check for DTC Click here.

      OK
      Electrically controlled brake system DTCs are not output.

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Drive the vehicle at a 50 km/h (31 mph) or more, and operate lane-keeping assist system.

    2. Check for DTCs Click here.

      OK
      DTC C1A46 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE DRIVING SUPPORT ECU Click here