PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A46

DTC Code DTC Name
C1A46 Yaw Rate Sensor

DESCRIPTION

The skid control ECU assembly receives vehicle stability signals from the yaw rate sensor and sends the signals to the driving support ECU and ECM. If the skid control ECU assembly detects that the yaw rate sensor is malfunctioning, the skid control ECU assembly sends a malfunction signal to the driving support ECU and outputs DTC C1A46. Also, when DTC C1A46 is output, the skid control ECU assembly outputs DTC C1234 at the same time.

When DTC C1A46 is detected, DTC C1234 is also output from the "ABS/VSC/TRC".

DTC Code DTC Detection Condition Trouble Area
C1A46 While the vehicle speed is 5 km/h (3 mph) or more, a yaw rate sensor malfunction signal is received from the skid control ECU assembly for 13 seconds or more.

  • Yaw rate sensor

  • Skid control ECU assembly

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTCs C1234 are not output.

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

  2. CHECK FOR DTC (PRE-CRASH SAFETY SYSTEM)


    1. Clear the DTCs Click here.

    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