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Home >> Lexus >> 2016 >> GS 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Forward Recognition System (Diagnostic Codes & Circuit Tests) >> Forward Recognition Camera System >> DTC U0101: Lost Communication with TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0182: Lost Communication with AFS ECU; DTC U0293: HV ECU Communication [10/2015 - ] >> Description
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DTC U0101: Lost Communication with TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0134: Lost Communication with DRS Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0182: Lost Communication with AFS ECU; DTC U0293: HV ECU Communication [10/2015 - ]: Description

These DTCs are output when a communication malfunction occurs between the sensors and ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0101 Lost Communication with TCM While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the TCM (ECM) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • TCM (ECM)
  • Forward recognition camera
U0123 Lost Communication with Yaw Rate Sensor Module While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the yaw rate sensor and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Yaw rate sensor
  • Forward recognition camera
U0129 Lost Communication with Brake System Control Module 2 seconds after the power switch is turned on (IG), a communication error between the skid control ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Skid control ECU assembly
  • Forward recognition camera
U0134 Lost Communication with DRS Module 2 seconds after the power switch is turned on (IG), a communication error between the DRS ECU (rear steering control ECU) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • DRS ECU (rear steering control ECU)
  • Forward recognition camera
U0142 Lost Communication with Body Control Module "B" 2 seconds after the power switch is turned on (IG), a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Main body ECU (Multiplex network body ECU)
  • Forward recognition camera
U0182 Lost Communication with AFS ECU 2 seconds after the power switch is turned on (IG), a communication error between the headlight ECU sub-assembly LH and the forward recognition camera is detected for approximately 5 seconds or more.
  • CAN communication system
  • Headlight ECU sub-assembly LH
  • Forward recognition camera
U0293 HV ECU Communication 2 seconds after the power switch is turned on (IG), a communication error between the power management control ECU and the forward recognition camera is detected for approximately 5 seconds.
  • CAN communication system
  • Power management control ECU
  • Forward recognition camera
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