ROAD SIGN ASSIST SYSTEM, Diagnostic DTC:C1AA8 and 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 detects that the forward recognition camera axis has deviated, DTC C1AA8 is stored. Also, if Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust is not performed after installing the forward recognition camera, DTC C1AA9 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AA8

Front Camera Module Incorrect Axial Gap

While the ignition switch is ON 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

Front Camera Module Beam Axis Not Adjusted

While the ignition switch is ON, the forward recognition camera detects that forward recognition camera adjustment has not been completed.

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 Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

    Click here

PROCEDURE

  1. CHECK FOR DTCs (ROAD SIGN ASSIST SYSTEM)

    1. Check if the stored DTCs are current DTCs.

    2. Check for DTCs.

      Click here

      Body Electrical > Road Sign Assist > Trouble Codes

    Result

    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 LEARNINGClick here

    C

    CLEAR DTCsClick here

    A

  2. CHECK VEHICLE CONDITION

    1. Check the operating conditions of the vehicle.

      Tip:

      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 LEARNINGClick here

    A

  3. CHECK WHEEL ALIGNMENT

    1. Check the front and rear wheel alignment (toe).

      for Front Side:Click here

      for Rear Side:Click here

      Tip:

      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 INSTALLATIONClick here

    A

  4. ADJUST WHEEL ALIGNMENT

    1. Adjust the alignment (toe) of the wheels.

      for Front Side:Click here

      for Rear Side:Click here

    Result

    Proceed to

    NEXT
    NEXT

  5. PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING

    1. Perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  6. CHECK FOR DTCs (ROAD SIGN ASSIST SYSTEM)

    1. Clear the DTCs.

      Click here

      Body Electrical > Road Sign Assist > Clear DTCs

    2. Make sure that the following conditions are met.

      Tip:

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

    3. Check for DTCs.

      Click here

      Body Electrical > Road Sign Assist > Trouble Codes

    Result

    Result

    Proceed to

    DTC C1AA8 is not output

    A

    DTC C1AA8 is output

    B
    A

    END

    B

    REPLACE FORWARD RECOGNITION CAMERA

    Click here

  7. CHECK FORWARD RECOGNITION CAMERA INSTALLATION

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

      Click here

      Tip:

      If the forward recognition camera bracket is deformed or misaligned, replace the windshield glass.

      OK

      No deformation or misalignment in the forward recognition camera bracket.

    Result

    Proceed to

    OK

    NG
    OK

    PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNINGClick here

    NG

  8. REPLACE WINDSHIELD GLASS

    1. Replace the windshield glass.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNINGClick here

  9. PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING

    1. Return the vehicle to normal operating conditions.

    2. Perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  10. CHECK FOR DTCs (ROAD SIGN ASSIST SYSTEM)

    1. Clear the DTCs.

      Click here

      Body Electrical > Road Sign Assist > Clear DTCs

    2. Make sure that the following conditions are met.

      Tip:

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

    3. Check for DTCs.

      Click here

      Body Electrical > Road Sign Assist > Trouble Codes

    Result

    Result

    Proceed to

    DTC C1AA8 is not output

    A

    DTC C1AA8 is output

    B
    A

    END

    B

    CHECK WHEEL ALIGNMENTClick here

  11. PERFORM FORWARD RECOGNITION CAMERA OPTICAL AXIS LEARNING

    1. Perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  12. CHECK FOR DTCs (ROAD SIGN ASSIST SYSTEM)

    1. Clear the DTCs.

      Click here

      Body Electrical > Road Sign Assist > Clear DTCs

    2. Make sure that the following conditions are met.

      Tip:

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

    3. Check for DTCs.

      Click here

      Body Electrical > Road Sign Assist > Trouble Codes

    Result

    Result

    Proceed to

    DTC C1AA9 is not output

    A

    DTC C1AA9 is output

    B
    A

    END

    B

    REPLACE FORWARD RECOGNITION CAMERA

    Click here

  13. CLEAR DTCs

    1. Check for DTCs related to the forward recognition camera.

      Tip:

      If only history DTCs are stored, they may have been stored due to a temporarily condition such as overloading of the vehicle, and the system returned to normal when Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust was performed.

    2. Clear the DTCs.

      Click here

      Body Electrical > Road Sign Assist > Clear DTCs

    Result

    Proceed to

    NEXT
    NEXT

    END