LKA/LDA SYSTEM(for Mono Camera Type), Diagnostic DTC:U023A

DTC Code DTC Name
U023A Lost Communication with Front Camera Module

DESCRIPTION

When a communication error between the forward recognition camera and the rack and pinion power steering gear assembly is detected, the forward recognition camera notifies other ECUs and stores DTC U023A is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
U023A Lost Communication with Front Camera Module When the power switch is on for 2 seconds or more, a communication malfunction between the forward recognition camera and the rack and pinion power steering gear assembly is detected for 5 seconds or more.

  • CAN communication system

  • Power steering system

  • Forward recognition camera

CAUTION / NOTICE / HINT

Note


  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.

  • If the forward recognition camera has been replaced with a new one, be sure to perform Forward Recognition Camera Learning.

    Click here

PROCEDURE


  1. CHECK FOR DTCs (POWER STEERING SYSTEM)


    1. Check for DTCs.

      Click here


      Chassis > EMPS > Trouble Codes

      Tech Tips

      When the LKA/LDA system outputs DTC U023A, the power steering system may also output DTC U023A. If DTC U023A is output, perform diagnosis for the power steering system first.

      Result
      Result Proceed to
      DTC U023A is not output A
      DTC U023A is output B

    B

    GO TO POWER STEERING SYSTEM Click here

    A

  2. CHECK FOR DTCs (PRE-COLLISION SYSTEM)


    1. Check for DTCs.

      Click here


      Body Electrical > Pre-Collision 2 > Trouble Codes

      Tech Tips

      If U1002 is detected in the pre-collision system, perform troubleshooting for U1002 and check for malfunctions in the local bus circuit.

      Result
      Result Proceed to
      DTC U1002 is not output A
      DTC U1002 is output B

    B

    GO TO PRE-COLLISION SYSTEM Click here

    A

  3. REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera.

      Click here

    2. Perform Forward Recognition Camera Learning.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END