LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:C1A01

DTC Code DTC Name
C1A01 Driving Support ECU

DESCRIPTION

If the forward recognition camera detects a malfunction in the internal circuit of the driving support ECU assembly, DTC C1A01 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A01 Driving Support ECU 2 seconds after the ignition switch is turned ON, a malfunction in the driving support ECU assembly internal circuit is detected for 5 seconds or more.

  • Driving support ECU assembly

  • Forward recognition camera

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

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

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

    Click here

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

    5. Clear the DTCs.

      Click here


      Chassis > LKA/LDA > Clear DTCs

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

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Turn the ignition switch to ON and wait 7 seconds or more.

    7. Check for DTCs.

      Click here


      Chassis > LKA/LDA > Trouble Codes
      Result
      Result Proceed to
      DTC C1A01 is output A
      DTC C1A01 is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera.

      Click here

    2. Adjust the forward recognition camera.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

    5. Clear the DTCs.

      Click here


      Chassis > LKA/LDA > Clear DTCs

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

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Turn the ignition switch to ON and wait 7 seconds or more.

    7. Check for DTCs.

      Click here


      Chassis > LKA/LDA > Trouble Codes
      Result
      Result Proceed to
      DTC C1A01 is not output A
      DTC C1A01 is output B

    A

    END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY for LHD: Click here
    REPLACE DRIVING SUPPORT ECU ASSEMBLY for RHD: Click here