LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), 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.

Detection Item

DTC Detection Condition

Trouble Area

C1AA2

Vehicle Speed Tolerance Malfunction

2 seconds after the ignition switch is turned ON, 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 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.

  • 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

  • When replacing the combination meter assembly, make sure to replace it with a new one.

PROCEDURE

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

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

      Click here

      Tip:

      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

    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.

      Tip:

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

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

    7. Check for DTCs.

      Click here

      Chassis > LKA/LDA > Trouble Codes

    Result

    Result

    Proceed to

    DTC C1AA2 is output

    A

    DTC C1AA2 is not output

    B
    B

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    A

  3. 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

  4. 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.

      Tip:

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

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

    7. Check for DTCs.

      Click here

      Chassis > LKA/LDA > Trouble Codes

    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)