LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:U0100, U0101, U0104, U0123, U0126, U0129, U0131, U0142, U0155

DTC Code DTC Name
U0100 Lost Communication with ECM
U0101 Lost Communication With TCM
U0104 Lost Communication with Cruise Control Module
U0123 Lost Communication with Yaw Rate Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0129 Lost Communication with Brake System Control Module
U0131 Lost Communication with Electric Power Steering ECU
U0142 Lost Communication with Body Control Module "B"
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)

DESCRIPTION

These DTCs are output when a communication malfunction occurs between the sensors and ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0100 Lost Communication with ECM

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • While the vehicle is being driven at 1 km/h or more, the lane departure warning camera cannot receive data from the ECM continuously for 5 seconds or more.

  • CAN communication system

  • ECM

  • Lane departure warning camera
U0101 Lost Communication With TCM

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • While the vehicle is being driven at 1 km/h or more, the lane departure warning camera cannot receive data from the ECM continuously for 5 seconds or more.

  • CAN communication system

  • ECM

  • Lane departure warning camera
U0104 Lost Communication with Cruise Control Module

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • The lane departure warning camera cannot receive data from the driving support ECU assembly for 5 seconds or more.

  • CAN communication system

  • Driving Support ECU assembly

  • Lane departure warning camera
U0123 Lost Communication with Yaw Rate Sensor Module

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • While the vehicle is being driven at 1 km/h or more, the lane departure warning camera cannot receive data from the airbag ECU assembly continuously for 5 seconds or more.

  • CAN communication system

  • Airbag ECU assembly

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

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • The lane departure warning camera cannot receive data from the spiral with sensor cable sub-assembly for 5 seconds or more.

  • CAN communication system

  • Spiral with sensor cable sub-assembly

  • Lane departure warning camera
U0129 Lost Communication with Brake System Control Module

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • The lane departure warning camera cannot receive data from the brake actuator assembly (skid control ECU) for 5 seconds or more.

  • CAN communication system

  • Brake actuator assembly (skid control ECU)

  • Lane departure warning camera
U0131 Lost Communication with Electric Power Steering ECU

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • The lane departure warning camera cannot receive data from the power steering ECU for 5 seconds or more.

  • CAN communication system

  • Power steering ECU assembly

  • Lane departure warning camera
U0142 Lost Communication with Body Control Module "B"

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • The lane departure warning camera cannot receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more.

  • CAN communication system

  • Main body ECU (multiplex network body ECU)

  • Lane departure warning camera
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • When the lane departure warning camera cannot receive data from the combination meter assembly continuously for 50 seconds or more.

  • CAN communication system

  • Combination meter assembly

  • Lane departure warning camera

PROCEDURE


  1. CHECK FOR DTCs


    1. Clear the DTCs.

      Click here


      Chassis > Lane Departure Alert > Clear DTCs

    2. Check the DTCs.

      Click here


      Chassis > Lane Departure Alert > Trouble Codes
      Result
      Result Proceed to
      DTC U0100, U0101, U0104, U0123, U0126, U0129, U0131, U0142 and U0155 are not output A
      DTC U0100, U0101, U0104, U0123, U0126, U0129, U0131, U0142 or U0155 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

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