CRUISE CONTROL SYSTEM, Diagnostic DTC:U0122

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

DESCRIPTION

The vehicle speed sensors send vehicle speed signals to the skid control ECU (brake booster with master cylinder assembly). Signals are then sent to the hybrid vehicle control ECU assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0122 Lost Communication with Vehicle Dynamics Control Module While power switch is on (IG), communication stop between skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU assembly continues for 2.6 seconds or more

  • Skid control ECU (brake booster with master cylinder assembly)

  • CAN communication system

  • Hybrid vehicle control ECU assembly

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Using the GTS to check if the CAN communication system is functioning normally.

      Click here

      Result
      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here