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Home >> Lexus >> 2015 >> GS 350 Base, RWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> DTC C1A46: Yaw Rate Sensor [09/2014 - 10/2015] >> Description
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DTC C1A46: Yaw Rate Sensor [09/2014 - 10/2015]: 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 brake actuator assembly (skid control ECU) sends a malfunction signal to the driving support ECU and outputs DTC C1A46. Also, when DTC C1A46 is output, the brake actuator assembly (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 the vehicle speed is 5 km/h (3 mph) or more, a yaw rate sensor malfunction signal is received from the brake actuator assembly (skid control ECU) for 13 seconds or more.
  • Yaw rate sensor
  • Brake actuator assembly (skid control ECU)
  • Driving support ECU