LIGHTING SYSTEM, Diagnostic DTC:U0073, U0100, U0101, U0126, U0129, U0142, U0155, U023A

DTC Code DTC Name
U0073 Control Module Communication Bus "A" Off
U0100 Lost Communication with ECM / PCM "A"
U0101 Lost Communication with TCM
U0126 Lost Communication with Steering Angle Sensor Module
U0129 Lost Communication with Brake System Control Module
U0142 Lost Communication with Body Control Module "B"
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module
U023A Lost Communication With Image Processing Module "A"

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area
U0073 Control Module Communication Bus "A" Off Bus off condition is detected. CAN communication system
U0100 Lost Communication with ECM / PCM "A" Communication stop occurs between the headlight ECU sub-assembly LH and ECM continuously for 10 seconds or more.

  • CAN communication system

  • ECM

  • Headlight ECU sub-assembly LH
U0101 Lost Communication with TCM Communication stop occurs between the headlight ECU sub-assembly LH and ECM continuously for 10 seconds or more.

  • CAN communication system

  • ECM

  • Headlight ECU sub-assembly LH
U0126 Lost Communication with Steering Angle Sensor Module Communication stop occurs between the headlight ECU sub-assembly LH and spiral with sensor cable sub-assembly (steering angle sensor) continuously for 10 seconds or more.

  • CAN communication system

  • Spiral with sensor cable sub-assembly (steering angle sensor)

  • Headlight ECU sub-assembly LH
U0129 Lost Communication with Brake System Control Module Communication stop occurs between the headlight ECU sub-assembly LH and brake actuator assembly (skid control ECU) continuously for 10 seconds or more.

  • CAN communication system

  • Brake actuator assembly (skid control ECU)

  • Headlight ECU sub-assembly LH
U0142 Lost Communication with Body Control Module "B" Communication stop occurs between the headlight ECU sub-assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

  • Headlight ECU sub-assembly LH
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module Communication stop occurs between the headlight ECU sub-assembly LH and combination meter assembly continuously for 30 seconds or more.

  • CAN communication system

  • Combination meter assembly

  • Headlight ECU sub-assembly LH
U023A Lost Communication With Image Processing Module "A" Communication stop occurs between the headlight ECU sub-assembly LH and forward recognition camera continuously for 5 seconds or more.

  • CAN communication system

  • Forward recognition camera

  • Headlight ECU sub-assembly LH

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here

      for Single Beam Headlight:


      Body Electrical > HL AutoLeveling > Clear DTCs

      for Triple Beam Headlight:


      Body Electrical > AFS > Clear DTCs

    2. Check for DTCs.

      Click here

      for Single Beam Headlight:


      Body Electrical > HL AutoLeveling > Trouble Codes

      for Triple Beam Headlight:


      Body Electrical > AFS > Trouble Codes
      OK
      DTCs U0073, U0100, U0101, U0126, U0129, U0142, U0155 and U023A output does not occur.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here