CRUISE CONTROL SYSTEM, Diagnostic DTC:U0122

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

DESCRIPTION

The ECM receives signals from the skid control ECU (master cylinder solenoid) via CAN communication.

DTC No. DTC Detection Condition Trouble Area
U0122 While the vehicle speed is 40 km/h (25 mph) or more and the cruise control main switch (ON/OFF) is on, signals cannot be received from the skid control ECU (master cylinder solenoid) for 2.6 seconds or more.

  • Skid control ECU (master cylinder solenoid)

  • CAN communication system

  • ECM

CAUTION / NOTICE / HINT

Tech Tips

Refer to troubleshooting in CAN Communication System.


PROCEDURE


  1. CHECK DTC OUTPUT (CRUISE CONTROL SYSTEM)


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC U0122 is not output A
      DTC U0122 is output (for LHD with Central Gateway ECU) B
      DTC U0122 is output (for LHD without Central Gateway ECU) C
      DTC U0122 is output (for RHD with Central Gateway ECU) D
      DTC U0122 is output (for RHD without Central Gateway ECU) E

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    D

    GO TO CAN COMMUNICATION SYSTEM Click here

    E

    GO TO CAN COMMUNICATION SYSTEM Click here