PRE-CRASH SAFETY 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 and ECM. 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. Also, when DTC C1A46 is stored, the skid control ECU stores DTC C1435 at the same time.

DTC No. DTC Detection Condition Trouble Area
C1A46 When the vehicle speed is 5 km/h (3 mph) or more, a yaw rate sensor malfunction signal is received from the skid control ECU.

  • Yaw rate sensor

  • Skid control ECU

  • Driving support ECU

INSPECTION PROCEDURE

Tech Tips

This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (VEHICLE STABILITY CONTROL SYSTEM)


    1. Check DTCs for vehicle stability control system Click here.

      OK
      DTC C1435 is not output.

    NG

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    OK

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


    1. Using the intelligent tester, enter the following menus: Body / Pre-Crash 2 / DTC.

    2. Clear the DTCs Click here.

    3. Drive the vehicle.

    4. Recheck for DTCs.

      OK
      DTC C1A46 is not output.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here