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 brake actuator assembly detects that the yaw rate sensor is malfunctioning, the brake actuator assembly 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 50 km/h (31 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 13 seconds.

  • Vehicle stability control system

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check for DTC Click here.

      OK
      Vehicle stability control system DTCs are not output.

    NG

    GO TO VEHICLE STABILITY CONTROL 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.

      Note

      When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization Click here. If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored.


    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here