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Home >> Lexus >> 2013 >> GS 450h >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> 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 U0128/13: Lost Communication with Park Brake Control 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 U0128/13: Lost Communication with Park Brake Control Module; DTC U0293/59: Communication Error from HV ECU: Description

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

DTC Code INF Code DTC Detection Condition Trouble Area
U0073/94 400
401		 Either of the following is detected:
  1. With IG1 terminal voltage 10 V or more, communication with yaw rate sensor does not occur for 1 second or more. (Yaw rate sensor response malfunction)
  2. With IG1 terminal voltage 10 V or more, communication with acceleration sensor does not occur for 1 second or more. (Acceleration sensor response malfunction)
  • CAN communication system
  • Yaw rate sensor
  • Skid control ECU assembly
↑ 402 With IG1 terminal voltage 10 V or more, communication with steering angle sensor does not occur for 1 second or more. (Steering angle sensor response malfunction)
  • CAN communication system
  • Steering sensor
  • Skid control ECU assembly
↑ 406
411		 CAN communication line (sub bus 15) has open or short, and cannot perform communication.
  • CAN communication system
  • Skid control ECU assembly
↑ 407
412		 CAN communication line (CAN No. 1 bus) has open or short, and cannot perform communication.
  • CAN communication system
  • Skid control ECU assembly
U0123/62 338 With the IG1 terminal voltage 10 V or more, data from the yaw rate sensor cannot be received for 1 second or more.
  • CAN communication system
  • Yaw rate sensor
  • Skid control ECU assembly
↑ 339 With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession:
  • Data from the yaw rate sensor cannot be received once or more within 5 seconds.
 ↑
U0124/95 319 With the IG1 terminal voltage 10 V or more, data from the acceleration sensor cannot be received for 1 second or more.
  • CAN communication system
  • Acceleration sensor (yaw rate sensor)
  • Skid control ECU assembly
↑ 320 With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession:
  • Data from the acceleration sensor cannot be received once or more within 5 seconds.
 ↑
U0126/63 350 With the IG1 terminal voltage 10 V or more, data from the steering angle sensor cannot be received for 1 second or more.
  • CAN communication system
  • Steering sensor
  • Skid control ECU assembly
↑ 601 With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession:
  • Data from the steering angle sensor cannot be received once or more within 5 seconds.
 ↑
U0128/13 425 With terminal IG1 voltage at 10 V or more, data cannot be received from the electric parking brake ECU for 1 second.
  • CAN communication system
  • Parking brake ECU assembly
  • Skid control ECU assembly
U0293/59 152 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.
  • CAN communication system
  • Power management control ECU
  • Skid control ECU assembly
↑ 153 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 10 times in succession. ↑
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