LIGHTING SYSTEM, Diagnostic DTC:U0073, U0100, U0129, U0142

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
U0142 Lost Communication with Body Control Module "B"

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area Note
U0073 Control Module Communication Bus OFF Lost communication with CAN communication line CAN communication system -
U0100 Lost Communication with ECM / PCM "A" Lost communication with ECM

  • CAN communication system

  • ECM

 -
U0129 Lost Communication with Brake System Control Module Lost communication with brake booster with master cylinder assembly (skid control ECU)

  • CAN communication system

  • Brake booster with master cylinder assembly (skid control ECU)

 -
U0142 Lost Communication with Body Control Module "B" Lost communication with main body ECU (multiplex network body ECU)

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

 -

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Turn the power switch on (IG).

    2. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTCs are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here