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

DTC Code DTC Name
C1A01 Driving Support ECU

DESCRIPTION

If the lane departure alert system (forward recognition camera) detects a malfunction in the internal circuit of the driving support ECU assembly, DTC C1A01 is stored.

DTC No. DTC Detection Condition Trouble Area
C1A01 When the engine switch is turned on (IG) or the system is activated, a malfunction in the driving support ECU assembly internal circuit is detected for 1 second 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 Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust 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 (PRE-CRASH SAFETY SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Pre-Crash 2 / Trouble Codes.

    5. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1A01 is not output A
      DTC C1A01 is output B

    B

    GO TO PRE-CRASH SAFETY SYSTEM Click here

    A

  2. CHECK DTC OUTPUT (LANE DEPARTURE ALERT SYSTEM)


    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 / LKA/LDA / Trouble Codes.

    5. Clear the DTCs Click here.

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

      Tech Tips

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

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1A01 is output A
      DTC C1A01 is not output B

    B

    USE SIMULATION METHOD TO CHECK (SYMPTOM SIMULATION) Click here

    A

  3. REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera Click here.

    2. Adjust the forward recognition camera Click here.


    NEXT

  4. CHECK DTC OUTPUT (LANE DEPARTURE ALERT SYSTEM)


    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 / LKA/LDA / Trouble Codes.

    5. Clear the DTCs Click here.

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

      Tech Tips

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

    7. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1A01 is output A
      DTC C1A01 is not output B

    A

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    B

    END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)