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

DTC Code DTC Name
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
U0101 Lost Communication with TCM

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

  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.

  • CAN communication system

  • ECM

  • Lane departure warning camera
U0126 Lost Communication with Steering Angle Sensor Module

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

  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.

  • CAN communication system

  • Power steering ECU assembly
U0129 Lost Communication with Brake System Control Module

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

  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.

  • CAN communication system

  • Brake actuator assembly (skid control ECU)
U0142 Lost Communication with Body Control Module "B"

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

  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.

  • CAN communication system

  • Main body ECU (multiplex network body ECU)
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module

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

  • The headlight light control ECU sub-assembly LH power supply voltage is 9.5 V or higher.

  • CAN communication system

  • Combination meter assembly

PROCEDURE


  1. CHECK FOR DTC


    1. Turn the engine switch on (IG).

    2. Turn on the headlights using the headlight dimmer switch (light control switch).

    3. Check for DTCs.

      Click here


      Body Electrical > HL AutoLeveling > Trouble Codes
      Result
      Result Proceed to
      DTCs U0101, U0126, U0129, U0142 and U0155 are not output. A
      DTC U0101, U0126, U0129, U0142 or U0155 is output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    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