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

DTC Code DTC Name
U0073 Control Module Communication Bus 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

DESCRIPTION

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

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

  • 3 seconds or more elapse after turning the engine switch on (IG).

  • The headlight ECU sub-assembly LH power supply voltage is 10 V or higher.

  • CAN communication system

  • ECM

  • Headlight ECU sub-assembly LH
U0101 Lost Communication with TCM

  • 3 seconds or more elapse after turning the engine switch on (IG).

  • The headlight ECU sub-assembly LH power supply voltage is 10 V or higher.

  • CAN communication system

  • ECM

  • Headlight ECU sub-assembly LH
U0126 Lost Communication with Steering Angle Sensor Module

  • 3 seconds or more elapse after turning the engine switch on (IG).

  • The headlight ECU sub-assembly LH power supply voltage is 10 V or higher.

  • CAN communication system

  • Steering sensor

  • Headlight ECU sub-assembly LH
U0129 Lost Communication with Brake System Control Module

  • 3 seconds or more elapse after turning the engine switch on (IG).

  • The headlight ECU sub-assembly LH power supply voltage is 10 V or higher.

  • CAN communication system

  • Brake actuator assembly (skid control ECU)

  • Headlight ECU sub-assembly LH
U0142 Lost Communication with Body Control Module "B"

  • 3 seconds or more elapse after turning the engine switch on (IG).

  • The headlight ECU sub-assembly LH power supply voltage is 10 V or higher.

  • 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

  • 3 seconds or more elapse after turning the engine switch on (IG).

  • The headlight ECU sub-assembly LH power supply voltage is 10 V or higher.

  • CAN communication system

  • Combination meter assembly

  • Headlight ECU sub-assembly LH

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      OK
      DTCs U0073, U0100, U0101, U0126, U0129, U0142 and U0155 are not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    GO TO CAN COMMUNICATION SYSTEM for LHD: GO TO CAN COMMUNICATION SYSTEM Click here
    GO TO CAN COMMUNICATION SYSTEM for RHD: GO TO CAN COMMUNICATION SYSTEM Click here