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LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:C1A48

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DTC Code DTC Name
C1A48 G Sensor
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DESCRIPTION

The lane departure alert system (forward recognition camera) receives G sensor signals from the airbag sensor assembly (yaw rate and acceleration sensor) via CAN communication.

If the lane departure alert system (forward recognition camera) receives a G sensor malfunction signal from the airbag sensor assembly (yaw rate and acceleration sensor), DTC C1A48 is stored.

DTC No. DTC Detection Condition Trouble Area
C1A48 When 2 seconds or more have elapsed after the power switch is turned on (IG), the lane departure alert system (forward recognition camera) receives a G sensor malfunction signal from the airbag sensor assembly (yaw rate and acceleration sensor) for 5 seconds or more.

  • Electronically controlled brake system

  • Airbag sensor assembly (yaw rate and acceleration sensor)

  • Forward recognition camera
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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).

  • 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).

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / ABS/VSC/TRC / Trouble Codes.

    5. Check for DTCs (Click here).

      Table 1. Result
      Result Proceed to
      Electronically controlled brake system DTCs are not output A
      Electronically controlled brake system DTCs are output B
      Tip:

      If the airbag sensor assembly (yaw rate and acceleration sensor) is malfunctioning, DTCs for the electronically controlled brake system will be stored. Troubleshoot the electronically controlled brake system first.


  2. Click here

    CHECK DTC OUTPUT (LANE DEPARTURE ALERT SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.

      Tip:

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

    7. Check for DTCs (Click here).

      Table 2. Result
      Result Proceed to
      DTC C1A48 is output A
      DTC C1A48 is not output B

  3. Click here

    REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera (Click here).

    2. Adjust the forward recognition camera (Click here).


  4. Click here

    CHECK DTC OUTPUT (LANE DEPARTURE ALERT SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power 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.

      Tip:

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

    7. Check for DTCs (Click here).

      Table 3. Result
      Result Proceed to
      DTC C1A48 is output A
      DTC C1A48 is not output B

    • A

      REPLACE AIRBAG SENSOR ASSEMBLY (YAW RATE AND ACCELERATION SENSOR) (Click here)

    • B

      END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)