LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:C1AAC

DTC Code DTC Name
C1AAC Vehicle Information Unmatched

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 hybrid vehicle control ECU. If the vehicle information stored in the forward recognition camera is different from that stored in the hybrid vehicle control ECU, DTC C1AAC is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AAC Vehicle Information Unmatched 2 seconds after the power switch is turned on (IG), the vehicle information received from the hybrid vehicle control ECU and that stored in the forward recognition camera do not match.

  • CAN communication system

  • Forward recognition camera

  • Hybrid vehicle 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

Tech Tips

This DTC is stored when the vehicle information stored in the forward recognition camera and that stored in the hybrid vehicle control ECU do not match. If the forward recognition camera or hybrid vehicle control ECU has been replaced, check if a forward recognition camera or hybrid vehicle control ECU from another vehicle was used.

PROCEDURE


  1. CHECK FOR DTCs (CAN COMMUNICATION DTC OUTPUT)

    Tech Tips

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


    1. Check for DTCs.

      Click here


      Chassis > LKA/LDA > Trouble Codes
      Result
      Result Proceed to
      DTC U0293 is not output A
      DTC U0293 is output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. READ VALUE USING TECHSTREAM


    1. Connect the Techstream to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the Techstream on.

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

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


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

      2WD: for 2WD

      4WD: for AWD

      Unknown: Vehicle information not confirmed

      		 -
      Vehicle Information (Conv/HV) Vehicle information Conv, HV or Unknown

      Conv: Conventional

      HV: Hybrid vehicle

      Unknown: Vehicle information not confirmed

      		 -

      Chassis > Front Recognition Camera > Data List
      Tester Display
      Vehicle Information (2WD/4WD)
      Vehicle Information (Conv/HV)

      Tech Tips


      • The vehicle information stored in the forward recognition camera is displayed on the Data List.

      • If the vehicle information stored in the forward recognition camera is different from the actual vehicle specifications, the vehicle information stored in the forward recognition camera may be incorrect. Check for DTCs and replace the forward recognition camera if necessary.

      • If the vehicle information stored in the forward recognition camera matches the actual vehicle specifications, the installed hybrid vehicle control ECU is incompatible. Replace the hybrid vehicle control ECU with a correct one.

      Result
      Result Proceed to
      Vehicle information stored in forward recognition camera and actual vehicle specifications do not match A
      Vehicle information stored in forward recognition camera and actual vehicle specifications match B

    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    A

  3. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)


    1. Clear the DTCs.

      Click here


      Chassis > LKA/LDA > Clear DTCs

    2. Perform the following procedure.

      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


      Chassis > LKA/LDA > Trouble Codes
      Result
      Result Proceed to
      DTC C1AAC is not output A
      DTC C1AAC is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE FORWARD RECOGNITION CAMERA Click here