Dtc U0122 Lost Communication With Vehicle Dynamics Control Module

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
Cruise Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC OUTPUT (CRUISE CONTROL SYSTEM)

DTC 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.
  1. Skid control ECU (master cylinder solenoid)
  2. CAN communication system
  3. ECM

INSPECTION PROCEDURE

HINT:
Refer to troubleshooting in CAN Communication System.
  1. for LHD with Central Gateway ECU: Click here
  2. for LHD without Central Gateway ECU: Click here
  3. for RHD with Central Gateway ECU: Click here
  4. for RHD without Central Gateway ECU: Click here
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


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)
A

USE SIMULATION METHOD TO CHECK (Click here)