DTC    U0100    Lost Communication with ECM / PCM "A"

DTC    U0129    Lost Communication with Brake System Control Module


DESCRIPTION

The power steering ECU assembly receives signals from the ECM and the brake actuator assembly (skid control ECU) via the CAN communication system.

DTC No.
DTC Detection Condition
Trouble Area
U0100
ECM communication error
  1. CAN communication system
  2. ECM
U0129
Skid control ECU communication error
  1. CAN communication system
  2. Brake actuator assembly (Skid control ECU)

INSPECTION PROCEDURE

1.CONFIRM DTC
  1. Check for DTCs (Click here ).

    Result 
    Result
    Proceed to
    DTC is not output
    A
    DTC is output
    B


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

USE SIMULATION METHOD TO CHECK (Click here)