LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:C1AA1

DTC Code DTC Name
C1AA1 FCM Destination Information Unmatched

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). When the country specification information in the lane departure warning camera and main body ECU (multiplex network body ECU) do not match, DTC C1AA1 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AA1 FCM Destination Information Unmatched While the initial check is running, the ignition switch is ON and the lane departure alert system is operating, country specification information in the lane departure warning camera and main body ECU (multiplex network body ECU) do not match for 1 second or more.

  • Lane departure warning camera

  • Main body ECU (multiplex network body ECU)

CAUTION / NOTICE / HINT

Note


  • When the lane departure warning camera is replaced with a new one, adjustment of the lane departure warning camera beam 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.

    Click here

PROCEDURE


  1. ADJUST LANE DEPARTURE WARNING CAMERA


    1. Perform the lane departure warning camera adjustment.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes / Clear DTCs.

    4. Clear the DTCs.


      Chassis > Lane Departure Alert > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTC


    1. Perform the following to make sure the DTC detection conditions are met.

      Tech Tips

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


      1. Drive the vehicle at a speed between 50 km/h (32 mph) and 220 km/h (138 mph), and operate the lane departure alert system.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.

    5. Check for DTCs.


      Chassis > Lane Departure Alert > Trouble Codes
      Result
      Proceed to
      No DTCs are output
      DTC C1AA1 is output

    No DTCs are output

    END (LANE DEPARTURE WARNING CAMERA ADJUSTMENT IS DEFECTIVE)

    DTC C1AA1 is output

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


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

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. ADJUST LANE DEPARTURE WARNING CAMERA


    1. Perform the lane departure warning camera adjustment.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Enter the following menus: Chassis / Lane Departure Alert / Clear DTCs.

    4. Clear the DTCs.


      Chassis > Lane Departure Alert > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  7. CHECK FOR DTC


    1. Perform the following to make sure the DTC detection conditions are met.

      Tech Tips

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


      1. Drive the vehicle at a speed between 50 km/h (32 mph) and 220 km/h (138 mph), and operate the lane departure alert system.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.

    5. Check for DTCs.


      Chassis > Lane Departure Alert > Trouble Codes
      Result
      Proceed to
      No DTCs are output
      DTC C1AA1 is output

    No DTCs are output

    END (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] IS DEFECTIVE)

    DTC C1AA1 is output

    REPLACE LANE DEPARTURE WARNING CAMERA Click here