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Home >> Lexus >> 2008 >> LS 460L >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Dynamic Radar Cruise Control System >> DTC U0100, U0122, U0123, U0126, U0235, U1104: Lost Communication with ECM/PCM "A"; Lost Communication with Vehicle Dynamics Control Module; Lost Communication with Yaw Rate Sensor Module; Lost Communication with Steering Angle Sensor Module; Lost Communication with Cruise Control Front Distance Range Sensor; Lost Communication with Driving Support ECU >> Description

DTC U0100, U0122, U0123, U0126, U0235, U1104: Lost Communication with ECM/PCM "A"; Lost Communication with Vehicle Dynamics Control Module; Lost Communication with Yaw Rate Sensor Module; Lost Communication with Steering Angle Sensor Module; Lost Communication with Cruise Control Front Distance Range Sensor; Lost Communication with Driving Support ECU: Description

This DTC is output when a communication malfunction occurs between the sensors and ECUs.

DTC DETECTION CONDITION TABLE

DTC Code DTC Detection Condition Trouble Area
U0100 While dynamic radar cruise control is either preparing for operation or operating and vehicle speed is 5 km/h (3 mph) or more, communication stop between ECM and driving support ECU continues for 1 second or more
  • ECM
  • CAN communication system
  • Driving support ECU
U0122 While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication stop between skid control ECU and driving support ECU continues for 1 second or more
  • Skid control ECU
  • CAN communication system
  • Driving support ECU
U0123 While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication stop between yaw rate sensor and driving support ECU continues for 1 second or more
  • Yaw rate sensor
  • CAN communication system
  • Driving support ECU
U0126 While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication stop between steering angle sensor and driving support ECU continues for 1 second or more
  • Steering angle sensor
  • CAN communication system
  • Driving support ECU
U0235 While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication stop between front millimeter wave radar sensor and driving support ECU continues for 1 second or more
  • Front millimeter wave radar sensor
  • CAN communication system
  • Driving support ECU
U1104 While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication stop between driving support ECU and front millimeter wave radar sensor, ECM or skid control ECU continues for 1 second or more
  • Driving support ECU
  • CAN communication system
  • Front millimeter wave radar sensor
  • ECM
  • Skid control ECU