VARIABLE GEAR RATIO STEERING SYSTEM, Diagnostic DTC:U0100/56, U0122/56, U0126/56

DTC Code DTC Name
U0100/56 Lost Communication with ECM / PCM "A"
U0122/56 Lost Communication with Vehicle Dynamics Control Module
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.

  • CAN communication system

  • ECM
U0122/56 The steering control ECU detects an error in reception (from skid control ECU) via CAN communication.

  • CAN communication system

  • Skid control ECU
U0126/56 The steering control ECU detects an error in reception (from steering angle sensor) via CAN communication.

  • CAN communication system

  • Steering angle sensor

PROCEDURE


  1. CHECK DTC


    1. Using the intelligent tester, check if the CAN communication system is functioning normally (See page 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

    A

    USE SIMULATION METHOD TO CHECK Click here

    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