VARIABLE GEAR RATIO STEERING SYSTEM, Diagnostic DTC:U0122/56, U0123/56, U0126/56, U0131/56

DTC Code DTC Name
U0122/56 Lost Communication with Vehicle Dynamics Control Module
U0123/56 Lost Communication with Yaw Rate (Deceleration) Sensor Module
U0126/56 Lost Communication with Steering Angle Sensor Module
U0131/56 Lost Communication with Power Steering Control Module

DESCRIPTION

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

DTC Code Detection Condition Trouble Area
U0122/56 The steering control ECU detects an error in reception (from skid control ECU) via CAN communication

  • CAN communication system

  • Skid control ECU
U0123/56 The steering control ECU detects an error in reception (from yaw rate sensor) via CAN communication

  • CAN communication system

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

  • CAN communication system

  • Steering angle sensor
U0131/56 The steering control ECU detects an error in reception (from power steering ECU) via CAN communication

  • CAN communication system

  • Power steering ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A

      for LHD:

      DTC is output

      		 B

      for RHD:

      DTC is output

      		 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