Dtc U0100/56 Lost Communication With Ecm / Pcm A

Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200
Variable Gear Ratio Steering. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC

DTC U0100/56 Lost Communication with ECM / PCM "A"

DTC U0122/56 Lost Communication with Vehicle Dynamics Control Module

DTC U0126/56 Lost Communication with Steering Angle Sensor Module


DESCRIPTION

The steering control ECU receives signals from the skid control ECU, ECM and steering angle sensor via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system first.

DTC Code
DTC Detection Condition
Trouble Area
U0100/56
The steering control ECU detects an error in reception (from ECM) via CAN communication.
  1. CAN communication system
  2. ECM
U0122/56
The steering control ECU detects an error in reception (from skid control ECU) via CAN communication.
  1. CAN communication system
  2. Skid control ECU
U0126/56
The steering control ECU detects an error in reception (from steering angle sensor) via CAN communication.
  1. CAN communication system
  2. Steering angle sensor

INSPECTION PROCEDURE

1.CHECK DTC

  1. Using the intelligent tester, check if the CAN communication system is functioning normally (Click here for LHD, Click here for RHD).

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output (for LHD)
    		B
    DTC is output (for RHD)
    		C



B
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (Click here)

C
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)