CRUISE CONTROL SYSTEM, Diagnostic DTC:U0122

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

DESCRIPTION

The ECM and driving support ECU assembly communicate signals with each sensor and ECU via CAN communication.

If there are any malfunctions in the communication circuit, one or more CAN communication system DTCs are output.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0122 Lost Communication with Vehicle Dynamics Control Module When the ignition switch is ON and the cruise control system is operating, a communication error between the skid control ECU (brake actuator assembly) and the ECM is detected for approximately 2.6 seconds or more.

  • CAN communication system

  • Skid control ECU (brake actuator assembly)

  • ECM

CAUTION / NOTICE / HINT

Tech Tips

Refer to troubleshooting in CAN Communication System.

for LHD with Central Gateway ECU: Click here

for RHD with Central Gateway ECU: Click here

for LHD without Central Gateway ECU: Click here

for RHD without Central Gateway ECU: Click here

PROCEDURE


  1. GO TO CAN COMMUNICATION SYSTEM

    for LHD with Central Gateway ECU: Click here

    for RHD with Central Gateway ECU: Click here

    for LHD without Central Gateway ECU: Click here

    for RHD without Central Gateway ECU: Click here

    Result
    Proceed to
    NEXT

    NEXT

    END