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Home >> Toyota >> 2012 >> Prius Two >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System (Except Plug-In) (Diagnostic Codes & Circuit Tests) >> Pre-Collision System >> DTC C1A46: Yaw Rate Sensor >> Description
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DTC C1A46: Yaw Rate Sensor: Description

The brake booster with master cylinder (skid control ECU) receives vehicle stability signals from the yaw rate sensor and sends the signals to the driving support ECU and power management control ECU. If the brake booster with master cylinder (skid control ECU) detects that the yaw rate sensor is malfunctioning, the brake booster with master cylinder (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 brake booster with master cylinder (skid control ECU) stores DTC C1234 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 brake booster with master cylinder (skid control ECU).
  • Yaw rate sensor
  • Brake booster with master cylinder (skid control ECU)
  • CAN communication system
  • Power management control ECU
  • Driving support ECU
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