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 with the engine switch on (IG) 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 3 seconds or more.

  • Lane departure warning camera

  • Main body ECU (multiplex network body ECU)

CAUTION / NOTICE / HINT

Note


  • Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

  • 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. READ VALUE USING GTS (DESTINATION INFORMATION)


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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
      Destination Information Status of the country JPN, NA, EURO, CHINA or OTHER (GEN-EXP) Actual country code -

      Chassis > Lane Departure Alert > Data List
      Tester Display
      Destination Information
      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 LANE DEPARTURE WARNING CAMERA Click here

    A

  2. CHECK FOR DTCs (LANE DEPARTURE ALERT)


    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 C1AA1 is not output A
      DTC C1AA1 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

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