LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:C1AA3

DTC Code DTC Name
C1AA3 Vehicle Speed Sensor Circuit

DESCRIPTION

The lane departure warning camera receives vehicle speed signals from the brake actuator assembly (skid control ECU). When the brake actuator assembly (skid control ECU) detects a malfunction in the vehicle wheel speed sensor, the lane departure warning camera is notified via CAN communication and DTC C1AA3 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AA3 Vehicle Speed Sensor Circuit

  • 2 seconds elapse after turning the engine switch on (IG).

  • The IG voltage is 10 V or higher.

  • 2 seconds elapse after the IG voltage is 10 V or higher.

  • While the lane departure alert system is operating, a vehicle wheel speed sensor malfunction signal is continuously received for 5 seconds or more from the brake actuator assembly (skid control ECU).

  • Vehicle stability control system

  • Lane departure warning camera

CAUTION / NOTICE / HINT

Note


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

    for LHD: Click here

    for RHD: Click here

PROCEDURE


  1. CHECK FOR DTCs (VEHICLE STABILITY CONTROL 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 / ABS/VSC/TRC / Trouble Codes.

    5. Check for DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output A
      Vehicle stability control system DTCs are output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

  2. CHECK FOR DTCs


    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 C1AA3 is not output A
      DTC C1AA3 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE LANE DEPARTURE WARNING CAMERA Click here