LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:C1AAC, C1AAD

DTC Code DTC Name
C1AAC Vehicle Information Unmatched
C1AAD Vehicle Information Initialization Incomplete

DESCRIPTION

When the vehicle information from the ECM and the information stored in the lane departure warning camera do not match or cannot be determined, DTC C1AAC or C1AAD is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AAC Vehicle Information Unmatched When the power switch is on (IG) or the system is operating, the vehicle information from the hybrid vehicle control ECU and the information stored in the lane departure warning camera do not match.

  • Hybrid vehicle control ECU

  • Lane departure warning camera
C1AAD Vehicle Information Initialization Incomplete While the power switch is on (IG) or the system is operating, the vehicle information sent from the hybrid vehicle control ECU cannot be determined.

  • Hybrid vehicle control ECU

  • Lane departure warning camera

CAUTION / NOTICE / HINT

Note


  • When the lane departure warning camera is replaced with a new one or it is removed, adjustment of the lane departure warning camera axis must be performed.

    Click here

  • The lane departure alert system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the lane departure alert system after confirming that the communication systems are functioning properly.

    for LHD: Click here

    for RHD: Click here

PROCEDURE


  1. READ VALUE USING GTS (DESTINATION 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 / Lane Departure Alert / Data List.

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


      Chassis > Lane Departure Alert > 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 > Lane Departure Alert > Data List
      Tester Display
      Vehicle Information (2WD/4WD)
      Vehicle Information (Conv/HV)
      Result
      Result Proceed to
      Country specification information for vehicle and lane departure warning camera match A
      Country specification information for vehicle and lane departure warning camera do not match B

    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    A

  2. CHECK FOR DTCs


    1. Clear the DTCs.

      Click here


      Chassis > Lane Departure Alert > Clear DTCs

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

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here


      Chassis > Lane Departure Alert > Trouble Codes
      Result
      Result Proceed to
      DTC C1AAC and C1AAD are not output A
      DTC C1AAC or C1AAD is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE LANE DEPARTURE WARNING CAMERA


    1. Replace the lane departure warning camera.

      Click here

    2. Perform the lane departure warning camera adjustment.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTCs


    1. Clear the DTCs.

      Click here


      Chassis > Lane Departure Alert > Clear DTCs

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

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here


      Chassis > Lane Departure Alert > Trouble Codes
      Result
      Result Proceed to
      DTC C1AAC and C1AAD are not output A
      DTC C1AAC or C1AAD is output B

    A

    END (LANE DEPARTURE WARNING CAMERA WAS DEFECTIVE)

    B

    REPLACE HYBRID VEHICLE CONTROL ECU Click here