POWER STEERING SYSTEM, Diagnostic DTC:U0100, U0126, U0129, U023A

DTC Code DTC Name
U0100 Lost Communication with ECM / PCM "A"
U0126 Lost Communication With Steering Angle Sensor Module
U0129 Lost Communication with Brake System Control Module
U023A Lost Communication with Front Camera Module

DESCRIPTION

The power steering ECU (rack and pinion power steering gear assembly) receives signals from the ECM, steering sensor, skid control ECU (brake actuator assembly) and forward recognition camera via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
U0100 Lost Communication with ECM / PCM "A" Lost communication with ECM

  • CAN communication system

  • ECM

  • Rack and pinion power steering gear assembly

 EPS warning light: When an error occurs during steering assist, the warning light does not illuminate. For errors that occur before assist (at the time of the decision to start assist), the warning light illuminates. The ECU judges the system has returned to normal -
U0126 Lost Communication With Steering Angle Sensor Module Lost communication with steering angle sensor

  • CAN communication system

  • Steering angle sensor

  • Rack and pinion power steering gear assembly

 EPS warning light: Comes on The ECU judges the system has returned to normal -
U0129 Lost Communication with Brake System Control Module Lost communication with skid control ECU (Brake actuator assembly)

  • CAN communication system

  • Skid control ECU (Brake actuator assembly)

  • Rack and pinion power steering gear assembly

 EPS warning light: Comes on The ECU judges the system has returned to normal -
U023A Lost Communication with Front Camera Module Lost communication with forward recognition camera

  • CAN communication system

  • Forward recognition camera

  • Rack and pinion power steering gear assembly

 EPS warning light: Does not come on The ECU judges the system has returned to normal w/ Forward Recognition Camera

PROCEDURE


  1. GO TO CAN COMMUNICATION SYSTEM


    1. Go to CAN communication system.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END