LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:U0101, U0104, U0123, U0129, U0142, U0155

DTC Code DTC Name
U0101 Lost Communication With TCM
U0104 Lost Communication with Cruise Control Module
U0123 Lost Communication with Yaw Rate 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 (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
U0101 Lost Communication With TCM

  • 2 seconds elapse after turning the power 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 hybrid vehicle control ECU continuously for 5 seconds or more.

  • CAN communication system

  • Hybrid vehicle control ECU

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

  • 2 seconds elapse after turning the power 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 Hybrid vehicle control ECU for 5 seconds or more.

  • CAN communication system

  • Hybrid vehicle control ECU

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

  • 2 seconds elapse after turning the power 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
U0129 Lost Communication with Brake System Control Module

  • 2 seconds elapse after turning the power 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 booster with master cylinder assembly for 5 seconds or more.

  • CAN communication system

  • Brake booster with master cylinder assembly

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

  • 2 seconds elapse after turning the power 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 power 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 U0101, U0104, U0123, U0129, U0142 and U0155 are not output A
      DTC U0101, U0104, U0123, U0129, U0142 or U0155 is not 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