LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:C1AAA, C1AAD

DTC Code DTC Name
C1AAA FCM Destination Information Uninitialized
C1AAD Vehicle Information Initialization Incomplete

DESCRIPTION

When the lane departure warning camera is replaced with a new one, it acquires the country specification information from the main body ECU (multiplex network body ECU) or ECM. If the lane departure warning camera cannot store the country specification information, DTC C1AAA or C1AAD is stored.

DTC Code DTC Detection Condition Trouble Area
C1AAA While the engine switch is on (IG), the lane departure warning camera cannot store the country specification information.

  • Main body ECU (multiplex network body ECU)

  • Lane departure warning camera
C1AAD When the engine switch is turned on (IG) or the system is activated, the vehicle information from the ECM cannot be confirmed.

  • ECM

  • Lane departure warning camera

INSPECTION PROCEDURE

Note


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

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

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

PROCEDURE


  1. READ VALUE USING TECHSTREAM (DESTINATION INFORMATION)


    1. Connect the Techstream to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the Techstream on.

    4. Enter the following menus: Chassis / Lane Departure Alert / Data List.

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

      Lane Departure Alert
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Destination Information Status of the country/JPN, NA, EURO, CHINA or OTHER (GEN-EXP) Actual country code -
      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 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    A

  2. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)


    1. Clear the DTCs Click here.

    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.

      Result
      Result Proceed to
      DTC C1AAA and C1AAD are not output A
      DTC C1AAA or C1AAD is output B

    B

    REPLACE LANE DEPARTURE WARNING CAMERA Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  3. REPLACE LANE DEPARTURE WARNING CAMERA


    1. Replace the lane departure warning camera with a new one Click here.

    2. Perform the lane departure warning camera adjustment Click here.


    NEXT

  4. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)


    1. Clear the DTCs Click here.

    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.

      Result
      Result Proceed to
      DTC C1AAA and C1AAD are not output A
      DTC C1AAA is output B
      DTC C1AAD is output (for 2AR-FE) C
      DTC C1AAD is output (for 2GR-FE) D

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    A

    END (LANE DEPARTURE WARNING CAMERA WAS DEFECTIVE)

  5. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Replace the main body ECU (multiplex network body ECU) with a new one Click here.


    NEXT

  6. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)


    1. Clear the DTCs Click here.

    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.

      Result
      Result Proceed to
      DTC C1AAA and C1AAD are not output A
      DTC C1AAA is output B
      DTC C1AAD is output C

    B

    REPLACE LANE DEPARTURE WARNING CAMERA Click here

    C

    REPLACE ECM Click here

    A

    END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)

  7. REPLACE ECM


    1. Replace the ECM with a new one Click here for 2AR-FE, Click here for 2GR-FE).


    NEXT

  8. CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)


    1. Clear the DTCs Click here.

    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.

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

    B

    REPLACE LANE DEPARTURE WARNING CAMERA Click here

    A

    END (ECM WAS DEFECTIVE)