DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U0100, U0122, U0123, U0126, U0155, U0235, U1104

DTC Code DTC Name
U0100 Lost Communication with ECM / PCM "A"
U0122 Lost Communication with Vehicle Dynamics Control Module
U0123 Lost Communication with Yaw Rate Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0155 Lost Communication with Instrument Panel Cluster Control Module (Combination Meter)
U0235 Lost Communication with Cruise Control Front Distance Range Sensor
U1104 Lost Communication with Driving Support ECU

DESCRIPTION

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

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 The driving support ECU is unable to receive certain data from the skid control ECU assembly for 5.24 seconds or more
  • Skid control ECU assembly

  • 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

U0155 While dynamic radar cruise control is either preparing for operation or operating and engine switch is on (IG), communication stop between No. 1 meter ECU sub-assembly and driving support ECU continues for 1 second or more
  • No. 1 meter ECU sub-assembly

  • 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

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Select "Bus Check" from the "System Select" screen on the intelligent tester.

    2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter".

      Result
      Result Proceed to
      CAN communication system DTC is not output. A
      CAN communication system DTC is not output. (for LHD) B
      CAN communication system DTC is not output. (for RHD) C

    B
    C
    A