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 outputs DTC C1A46. Also, when DTC C1A46 is output, the skid control ECU outputs DTC C1234 at the same time.

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

DTC Code DTC Detection Condition Trouble Area
C1A46 While vehicle speed is 5 km/h (3 mph) or more, malfunction signal from skid control ECU to yaw rate sensor is detected for 1 second

  • Yaw rate sensor

  • Skid control ECU

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Using the intelligent tester, enter the following menus: Chassis / ABS/VSC/TRC. Then select "DTC".

    2. Check for DTC.

      OK
      DTC C1234 is not output.

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

    REPLACE DRIVING SUPPORT ECU Click here