LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:C1AA2

DTC Code DTC Name
C1AA2 Vehicle Speed Tolerance Malfunction

DESCRIPTION

The forward recognition camera receives vehicle speed tolerance signals from the combination meter assembly. If the combination meter assembly detects a vehicle speed tolerance malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA2 is stored.

DTC No. DTC Detection Condition Trouble Area
C1AA2 2 seconds after the engine switch is turned on (IG), a signal from the combination meter assembly indicating an abnormal vehicle speed tolerance is detected by the forward recognition camera for 50 seconds or more.

  • Meter/gauge system

  • Combination meter 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.

  • 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. INSPECT COMBINATION METER ASSEMBLY (ON-VEHICLE INSPECTION)


    1. Perform On-vehicle Inspection of the meter/gauge system Click here.

      Tech Tips

      Check the meter function by referring to On-vehicle Inspection for the combination meter assembly.

      Result
      Result Proceed to
      Combination meter assembly is normal A
      Combination meter assembly is malfunctioning B

    B

    CHECK METER / GAUGE SYSTEM (SPEEDOMETER MALFUNCTION) 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. Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

    4. Clear the DTCs Click here.

    5. 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 engine switch on (IG) and wait 1 minute or more.

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AA2 is output A
      DTC C1AA2 is not output B

    B

    USE SIMULATION METHOD TO CHECK 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. Enter the following menus: Chassis / LKA/LDA / Trouble Codes.

    4. Clear the DTCs Click here.

    5. 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 engine switch on (IG) and wait wait 1 minute or more.

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AA2 is output A
      DTC C1AA2 is not output B

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

    B

    END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)