ROAD SIGN ASSIST SYSTEM, Diagnostic DTC:C1AA8, C1AA9

DTC Code DTC Name
C1AA8 Front Camera Module Incorrect Axial Gap
C1AA9 Front Camera Module Beam Axis Not Adjusted

DESCRIPTION

If the forward recognition camera determines that the forward recognition camera axis has deviated, DTC C1AA8 is stored. Also, if the camera sensor optical axis learning is not performed after installing the forward recognition camera, DTC C1AA9 is stored.

DTC No. DTC Detection Condition Trouble Area
C1AA8 While the engine switch is on (IG) and the road sign assist system is operating, the forward recognition camera detects forward recognition camera optical axis deviation.

  • Forward recognition camera

  • Windshield glass
C1AA9 While the engine switch is on (IG), the forward recognition camera detects that forward recognition camera adjustment has not been completed.

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.

PROCEDURE


  1. CHECK DTC OUTPUT (ROAD SIGN ASSIST SYSTEM)


    1. Check if the stored DTCs are current DTCs.

    2. Connect the GTS to the DLC3.

    3. Turn the engine switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / Road Sign Assist / Trouble Codes.

    6. Check for DTCs Click here.

      Result Proceed to
      Current DTC C1AA8 is output A
      Current DTC C1AA9 is output B
      History DTC C1AA8 is output C

    B

    PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING Click here

    C

    CLEAR DTC Click here

    A

  2. CHECK VEHICLE CONDITION


    1. Check the operating conditions of the vehicle.

      Tech Tips

      DTC C1AA8 may be stored if the forward recognition camera optical axis is temporarily misaligned due to the vehicle being overloaded.

      Result
      Result Proceed to
      Vehicle is not overloaded or being towed. A
      Vehicle is overloaded or being towed. B

    B

    PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING Click here

    A

  3. CHECK WHEEL ALIGNMENT


    1. Check the front and rear wheel alignment (toe) (See page , Click here).

      Tech Tips

      DTC C1AA8 may be stored if the forward recognition camera optical axis is misaligned due to incorrect wheel alignment (toe).

      Result
      Result Proceed to
      Front or rear wheel is misaligned (toe) A
      Front and rear wheels are not misaligned (toe) B

    B

    CHECK FORWARD RECOGNITION CAMERA INSTALLATION Click here

    A

  4. ADJUST WHEEL ALIGNMENT


    1. Adjust the alignment (toe) of the wheels (See page , Click here).


    NEXT

    PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING Click here

  5. CHECK FORWARD RECOGNITION CAMERA INSTALLATION


    1. Check the installation condition of the forward recognition camera Click here.

      Tech Tips

      If there is a malfunction with the installation condition of the forward recognition camera, replace the windshield glass.

      Result
      Result Proceed to
      No deformation or deviation in forward recognition camera installation bracket A
      Deformation or deviation in forward recognition camera installation bracket B

    B

    REPLACE WINDSHIELD GLASS Click here

    A

  6. PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING


    1. Adjust the forward recognition camera Click here.


    NEXT

  7. CHECK DTC OUTPUT (ROAD SIGN ASSIST 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 / Road Sign Assist / 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 C1AA8 or C1AA9 is output. A
      DTC C1AA8 and C1AA9 are not output. B

    8. Turn the engine switch off.


    A

    REPLACE FORWARD RECOGNITION CAMERA Click here

    B

    END

  8. REPLACE WINDSHIELD GLASS


    1. Replace the windshield glass Click here.


    NEXT

    PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING Click here

  9. CLEAR DTC


    1. Check for DTCs related to forward recognition camera.

      Tech Tips

      If only history DTCs are stored, they may have stored due to a temporarily condition such as overloading of the vehicle, and the system returned to normal when optical axis learning was performed.

    2. Clear for DTCs Click here.


    NEXT

    END

  10. PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING


    1. Return the vehicle to normal operating conditions.

    2. Adjust the forward recognition camera Click here.

    3. Clear the DTCs Click here.


    NEXT

    END