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 stroes DTC C1A46.

Also, when DTC C1A46 is stored, the skid control ECU stores DTC C1234/34 at the same time.

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 1 second.

  • Vehicle stability control system

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check for DTCs Click here.

      OK
      DTC C1234/34 is not output.

    NG

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    OK

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Perform the following to make sure the DTC detection conditions are met.

      Tech Tips

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


      1. Drive the vehicle at a speed of 50 km/h (31 mph) or more.

      2. Turn the lane-keeping assist main switch on.

    3. Check for DTCs Click here.

      OK
      DTC C1A46 is not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE DRIVING SUPPORT ECU Click here

    C

    REPLACE DRIVING SUPPORT ECU Click here

    A

    USE SIMULATION METHOD TO CHECK Click here