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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 31 (Pre-Collision System - Diagnostic Codes (Hybrid)) >> PRE-COLLISION SYSTEM (for HV Model) >> DTC C1A46: Yaw Rate Sensor [04/2018 - 08/2021] >> Description

DTC C1A46: Yaw Rate Sensor [04/2018 - 08/2021]: Description

WARNING: This page is about a different variant/trim than selected.

The driving support ECU assembly receives yaw rate sensor signals from the airbag ECU assembly and skid control ECU (brake booster with master cylinder assembly) via CAN communication. If the driving support ECU assembly receives a yaw rate sensor malfunction signal from the airbag ECU assembly or skid control ECU (brake booster with master cylinder assembly), DTC C1A46 will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A46 Yaw Rate Sensor
  • While the vehicle is being driven at a speed of 5 km/h (4 mph) or more, the driving support ECU assembly receives a yaw rate sensor malfunction signal from airbag ECU assembly for approximately 10 seconds.
  • While the vehicle is being driven at a speed of 5 km/h (4 mph) or more, the driving support ECU assembly receives a yaw rate sensor zero point malfunction signal from skid control ECU (brake booster with master cylinder assembly) for approximately 10 seconds.
Electronically controlled brake system
DTC DETECTION CONDITIONS:

  Vehicle Condition
Pattern 1 Pattern 2
Malfunction Status Vehicle is being driven at a speed of 5 km/h (4 mph) or more
Driving support ECU assembly receives a yaw rate sensor malfunction signal from airbag ECU assembly -
Driving support ECU assembly receives a yaw rate sensor zero point malfunction signal from skid control ECU (brake booster with master cylinder assembly) -
Detection Time Approximately 10 seconds or more Approximately 10 seconds or more
Number of Trips 1 trip 1 trip

HINT: 

DTC will be stored when the conditions of any pattern in the table above are met.