CRUISE CONTROL SYSTEM, Diagnostic DTC:U0122

DTC Code DTC Name
U0122 Lost Communication with Vehicle Dynamics Control Module

DESCRIPTION

Send vehicle speed signal to brake actuator assembly, and then it is sent to ECM.

DTC Code DTC Detection Condition Trouble Area
U0122 While engine switch is on (IG), communication stop between brake actuator and ECM continues for 1 second or more

  • Brake actuator assembly

  • CAN communication system

  • ECM

INSPECTION PROCEDURE


PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Select "Bus Check" from the "System Select"

      for LHD: Click here

      for RHD: Click here

    2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter"

      for LHD: Click here

      for RHD: Click here

      OK
      CAN communication system DTC is not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

    USE SIMULATION METHOD TO CHECK Click here