LIGHTING SYSTEM(for LED Headlight), Diagnostic DTC:U0073, U0100, U0129, U0132, U0142, U023A

DTC Code DTC Name
U0073 Control Module Communication Bus Off
U0100 Lost Communication with ECM / PCM "A"
U0129 Lost Communication with Brake System Control Module
U0132 Lost Communication with Suspension Control ECU
U0142 Lost Communication with Body Control Module "B"
U023A Lost Communication with Front Camera Module

DESCRIPTION

These DTCs are stored when the CAN communication system is malfunctioning.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Note
U0073 Control Module Communication Bus Off The No. 1 headlight ECU sub-assembly does not send/receive data. CAN communication system No. 1 headlight ECU sub-assembly LH -
U0100 Lost Communication with ECM / PCM "A" The No. 1 headlight ECU sub-assembly LH does not receive data from the ECM for approximately 10 seconds or more.

  • CAN communication system

  • ECM

  • No. 1 headlight ECU sub-assembly LH

 No. 1 headlight ECU sub-assembly LH -
U0129 Lost Communication with Brake System Control Module The No. 1 headlight ECU sub-assembly LH does not receive data from the skid control ECU assembly for approximately 10 seconds or more.

  • CAN communication system

  • Skid control ECU assembly

  • No. 1 headlight ECU sub-assembly LH

 No. 1 headlight ECU sub-assembly LH -
U0132 Lost Communication with Suspension Control ECU The No. 1 headlight ECU sub-assembly LH does not receive data from the suspension control ECU for approximately 10 seconds or more

  • CAN communication system

  • Suspension control ECU

  • No. 1 headlight ECU sub-assembly LH

 No. 1 headlight ECU sub-assembly LH w/ Air Suspension System
U0142 Lost Communication with Body Control Module "B" The No. 1 headlight ECU sub-assembly LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

  • No. 1 headlight ECU sub-assembly LH

 No. 1 headlight ECU sub-assembly LH -
U023A Lost Communication with Front Camera Module The main body ECU (multiplex network body ECU) does not receive data from the forward recognition camera for approximately 10 seconds or more.

  • CAN communication system

  • Forward recognition camera

  • Main body ECU (multiplex network body ECU)

 Main body ECU (multiplex network body ECU) w/ Automatic High Beam System

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here

    2. Turn the ignition switch to ON and wait for at least 10 seconds or more.

    3. Check for DTCs.

      Click here

      OK
      DTCs U0100, U0129, U0132, U0142 and U023A are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here