ROAD SIGN ASSIST SYSTEM(for Mono Camera Type), Diagnostic DTC:U0101, U0123, U0129, U0134, U0142, U0155, U0293

DTC Code DTC Name
U0101 Lost Communication With TCM
U0123 Lost Communication with Yaw Rate Sensor Module
U0129 Lost Communication with Brake System Control Module
U0134 Lost Communication with DRS Module
U0142 Lost Communication with Body Control Module "B"
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)
U0293 Lost Communication with Hybrid Vehicle Control System

DESCRIPTION

These DTCs are stored when a communication error 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 hybrid vehicle control ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more.

  • CAN communication system

  • Hybrid vehicle control ECU assembly

  • 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
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter) 2 seconds after the power switch is turned on (IG), a communication error between the combination meter assembly and the forward recognition camera is detected for approximately 50 seconds or more.

  • CAN communication system

  • Combination meter assembly

  • Forward recognition camera
U0293 Lost Communication with Hybrid Vehicle Control System While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the hybrid vehicle control ECU assembly and the forward recognition camera is detected for approximately 5 seconds or more.

  • CAN communication system

  • Hybrid vehicle control ECU assembly

  • Forward recognition camera

PROCEDURE


  1. CHECK FOR DTCs (ROAD SIGN ASSIST SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Road Sign Assist > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here


      Body Electrical > Road Sign Assist > Trouble Codes
      Result
      Result Proceed to
      DTC U0101, U0123, U0129, U0134, U0142, U0155 and U0293 are not output A
      DTC U0101, U0123, U0129, U0134, U0142, U0155 or U0293 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here