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Home >> Lexus >> 2015 >> ES 300h >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Electronically Controlled Brake System (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 [08/2014 - ] >> 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 [08/2014 - ]: Description

The skid control ECU (brake booster with master cylinder assembly) receives signals from the power management control ECU, steering angle sensor and yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system.

DTC No. 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 (V bus)
  • Yaw rate and acceleration sensor (Airbag sensor assembly)
  • Skid control ECU (Brake booster with master cylinder assembly)
↑ 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 (V bus)
  • Steering angle sensor
  • Skid control ECU (Brake booster with master cylinder assembly)
↑ 463
464		 Bus off occurs once or more per 0.1 seconds 10 times repeatedly.
  • CAN communication line
  • Skid control ECU (Brake booster with master cylinder assembly)
↑ 465
466		 Sending does not complete within 5 seconds after data is output from the skid control ECU (brake booster with master cylinder assembly). ↑
U0123/62 731 Yaw rate sensor communication is disabled for 1 second or more.
  • CAN communication line (V bus)
  • Yaw rate sensor (Airbag sensor assembly)
  • Skid control ECU (Brake booster with master cylinder assembly)
↑ 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 (V bus)
  • Acceleration sensor (Airbag sensor assembly)
  • Skid control ECU (Brake booster with master cylinder assembly)
↑ 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 (V bus)
  • Steering angle sensor
  • Skid control ECU (Brake booster with master cylinder assembly)
↑ 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 (Sub bus 15)
  • Power management control ECU
  • Skid control ECU (Brake booster with master cylinder assembly)
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