LKA/LDA SYSTEM, Diagnostic DTC:C1AAD

DTC Code DTC Name
C1AAD Vehicle Information Initialization Incomplete

DESCRIPTION

When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store the vehicle information received from the power management control ECU. If the forward recognition camera cannot store the vehicle information, DTC C1AAD is stored.

DTC No. DTC Detection Condition Trouble Area
C1AAD 2 seconds after the power switch is turned on (IG), the vehicle information from the power management control ECU cannot be stored.

  • CAN communication system

  • Forward recognition camera

  • Power management control ECU

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 DTC OUTPUT (CAN COMMUNICATION DTC OUTPUT)

    CAUTION:

    The forward recognition camera communicates with the power management control ECU via CAN communication. Confirm that the CAN communication system is functioning normally before proceeding.


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC U0293 is not output A
      DTC U0293 is output (for LHD) B
      DTC U0293 is output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. READ VALUE USING GTS (VEHICLE INFORMATION)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / Front Recognition Camera / Data List.

    5. Read the Data List according to the display on the GTS.

      Chassis > Front Recognition Camera > Data List
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Information (2WD/4WD)

      Vehicle information (drivetrain) stored in forward recognition camera/

      2WD, AWD or Unknown

      2WD: for 2WD

      AWD: for AWD

      Unknown: Vehicle information not confirmed

      		 -
      Vehicle Information (Conv/HV)

      Vehicle information (conventional/ hybrid) stored in forward recognition camera/

      Conv, HV or Unknown

      Conv: Conventional

      HV: Hybrid vehicle

      Unknown: Vehicle information not confirmed

      		 -

      Tech Tips


      • If "Unknown" is displayed, the power management control ECU cannot send vehicle information or the forward recognition camera cannot store the vehicle information. Check for DTCs, replace the power management control ECU if necessary and recheck for DTCs. If the DTC is output again, replace the forward recognition camera.

      • If "Unknown" is not displayed, the DTC is stored even though the vehicle information is stored in the forward recognition camera. Replace the forward recognition camera.

      Result
      Result Proceed to
      "Unknown" is displayed A
      "Unknown" is not displayed B

    B

    REPLACE FORWARD RECOGNITION CAMERA Click here

    A

  3. CHECK DTC OUTPUT (LKA/LDA SYSTEM)


    1. Clear the DTCs Click here.

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Turn the power switch on (IG) and wait 2 seconds or more.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AAD is output A
      DTC C1AAD is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  4. REPLACE POWER MANAGEMENT CONTROL ECU


    1. Replace the power management control ECU Click here.


    NEXT

  5. CHECK DTC OUTPUT (LKA/LDA SYSTEM)


    1. Clear the DTCs Click here.

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Turn the power switch on (IG) and wait 2 seconds or more.

    3. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AAD is output A
      DTC C1AAD is not output B

    A

    REPLACE FORWARD RECOGNITION CAMERA Click here

    B

    END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE)