Dtc U0100 Lost Communication With Ecm / Pcm A

Vehicle Interior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Pre-Crash Safety. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC (CAN COMMUNICATION SYSTEM)

DTC U0100 Lost Communication with ECM / PCM "A"

DTC U0122 Lost Communication with Vehicle Dynamics Control Module

DTC U0151 Lost Communication with Airbag ECU

DTC U1101 Lost Communication with Distance Control ECU


DESCRIPTION

The seat belt control ECU receives signals from the master cylinder solenoid (skid control ECU) and the center airbag sensor via the CAN communication line.
The distance control ECU receives signals from the ECM via the CAN communication line.

DTC Code
DTC Detection Item
Inspection Area
U0100
ECM communication error.
  1. CAN communication system
  2. Distance control ECU
  3. ECM
U0122
Skid control ECU communication error.
  1. CAN communication system
  2. Master cylinder solenoid (skid control ECU)
  3. Seat belt control ECU
U0151
Center airbag sensor communication error.
  1. CAN communication system
  2. Seat belt control ECU
  3. Center airbag sensor
U1101
Distance control ECU communication error.
  1. CAN communication system
  2. Distance control ECU
  3. Seat belt control ECU

INSPECTION PROCEDURE

HINT:
When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harnesses of each ECU.
1.CHECK DTC (CAN COMMUNICATION SYSTEM)

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

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



B
GO TO CAN COMMUNICATION SYSTEM (Click here)

C
GO TO CAN COMMUNICATION SYSTEM (Click here)
A

USE SIMULATION METHOD TO CHECK (Click here)