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Home >> Toyota >> 2012 >> Prius Three >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> Electronically Controlled Brake System (Except Plug-In) (Diagnostic Codes & Symptom Tests) >> Electronically Controlled Brake System >> DTC U0073/94: Control Module Communication Bus OFF; DTC U0123/62: Lost Communication with Yaw Rate Sensor Module; DTC U0124/95: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126/63: Lost Communication with Steering Angle Sensor Module; DTC U0293/59: Communication Error from HV ECU >> Description
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DTC U0073/94: Control Module Communication Bus OFF; DTC U0123/62: Lost Communication with Yaw Rate Sensor Module; DTC U0124/95: Lost Communication with Lateral Acceleration Sensor Module; DTC U0126/63: Lost Communication with Steering Angle Sensor Module; DTC U0293/59: Communication Error from HV ECU: Description

The skid control ECU receives the signals from the power management control ECU, steering angle sensor, and yaw rate and acceleration sensor via the CAN communication system.

DTC Code INF Code DTC Detection Condition Trouble Area
U0073/94 461 Either of the following is detected:
  1. Yaw rate and acceleration sensor communication is disabled for 1 second or more.
  2. Yaw rate and acceleration sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.
  • CAN communication line (CAN No. 1 bus)
  • Yaw rate and acceleration sensor
  • Brake booster with master cylinder (Skid control ECU)
↑ 462 Either of the following is detected:
  1. Steering angle sensor communication is disabled for 1 second or more.
  2. Steering angle sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds.
  • CAN communication line (CAN No. 1 bus)
  • Steering angle sensor
  • Brake booster with master cylinder (Skid control ECU)
↑ 463
464		 Bus off occurs once or more per 0.1 seconds 10 times repeatedly.
  • CAN communication line
  • Brake booster with master cylinder (Skid control ECU)
↑ 465
466		 Sending does not complete within 5 seconds after data is output from the skid control ECU. ↑
U0123/62 731 Yaw rate sensor communication is disabled for 1 second or more.
  • CAN communication line (CAN No. 1 bus)
  • Yaw rate and acceleration sensor
  • Brake booster with master cylinder (Skid control ECU)
↑ 732 Yaw rate sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds. ↑
U0124/95 591 Acceleration sensor communication is disabled for 1 second or more.
  • CAN communication line (CAN No. 1 bus)
  • Yaw rate and acceleration sensor
  • Brake booster with master cylinder (Skid control ECU)
↑ 592 Acceleration sensor communication is disabled once per 5 seconds 10 times or more within 60 seconds. ↑
U0126/63 741 Steering angle sensor communication is disabled for 1 second or more.
  • CAN communication line (CAN No. 1 bus)
  • Steering angle sensor
  • Brake booster with master cylinder (Skid control ECU)
↑ 742 Steering angle sensor communication is disabled once or more per 5 seconds 10 times or more within 60 seconds. ↑
U0293/59 411
412
413		 Either of the following is detected:
  1. With the IG2 terminal voltage 9.5 V or more, data from the power management control ECU cannot be received for 2 seconds or more.
  2. With the IG2 terminal voltage 9.5 V or more, data from the power management control ECU cannot be received once or more within 5 seconds occur 10 times in succession.
  • CAN communication line (Power management bus)
  • Power management control ECU (Hybrid vehicle control ECU)
  • Brake booster with master cylinder (Skid control ECU)
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