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 and yaw rate sensor send a malfunction signal to the driving support ECU which stores DTC C1A46.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C1A46

Yaw Rate Sensor

While the vehicle speed is 5 km/h (3 mph) or more, a malfunction signal from the skid control ECU and yaw rate sensor is detected for 1 second.

  • Vehicle stability control system

  • Driving support ECU

Driving Support ECU (Pre-Crash 2)

PROCEDURE

  1. CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)

    1. Check for DTCs.

      Click hereClick here

      Chassis > ABS/VSC/TRC > Trouble Codes

      OK

      Vehicle stability control system DTCs are not output.

      Result

      Result

      OK

      NG
    NG

    GO TO VEHICLE STABILITY CONTROL SYSTEM

    Click hereClick here

    OK

  2. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Pre-Crash > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > Pre-Crash > Trouble Codes

      OK

      DTC C1A46 is not output.

      Result

      Result

      OK

      NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    NG

    REPLACE DRIVING SUPPORT ECU

    Click here