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 power management control ECU.

DTC No. DTC Detection Condition Trouble Area
U0122 While power switch is on (IG), communication stop between skid control ECU (brake booster with master cylinder assembly) and power management control ECU continues for 2.6 seconds or more

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

  • CAN communication system

  • Power management control ECU

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Select "CAN Bus Check" from the "System Select" screen.

    4. Select "DTC" from the "Can Bus Check" screen, and then select "Enter".

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

    5. Turn the power switch off.


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here