DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:U0122, U0123, U0126, U0293, U1104

DTC Code DTC Name
U0122 Lost Communication with Vehicle Dynamics Control Module
U0123 Lost Communication with Yaw Rate Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0293 Lost Communication with HV ECU
U1104 Lost Communication with Driving Support ECU

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
U0122 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication stop between skid control ECU and driving support ECU assembly continues for 1 second or more

  • Brake booster with master cylinder (skid control ECU)

  • Power management control ECU

  • Driving support ECU assembly

  • CAN communication system
U0123 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication stop between yaw rate sensor and driving support ECU assembly continues for 1 second or more

  • Yaw rate sensor

  • Power management control ECU

  • Driving support ECU assembly

  • CAN communication system
U0126 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication stop between steering angle sensor and driving support ECU assembly continues for 1 second or more

  • Steering angle sensor

  • Power management control ECU

  • Driving support ECU assembly

  • CAN communication system
U0293 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication stop between power management control ECU and driving support ECU assembly or skid control ECU continues for 1 second or more

  • Power management control ECU

  • Driving support ECU assembly

  • Brake booster with master cylinder (skid control ECU)

  • CAN communication system
U1104 While dynamic radar cruise control is either preparing for operation or operating and power switch is on (IG), communication stop between driving support ECU assembly and millimeter wave radar sensor assembly, power management control ECU, or brake booster with master cylinder (skid control ECU) continues for 1 second or more

  • Driving support ECU assembly

  • Power management control ECU

  • Millimeter wave radar sensor assembly

  • Brake booster with master cylinder (skid control ECU)

  • Wire harness or connector (Driving support ECU assembly - millimeter wave radar sensor assembly)

  • CAN communication system

PROCEDURE


  1. CHECK FOR DTCs (CAN COMMUNICATION SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.

    5. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    6. Check for DTCs.

      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here