PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1AA9

DTC Code DTC Name
C1AA9 Front Camera Module Beam Axis Not Adjusted

DESCRIPTION

If Forward Recognition Camera Learning has not been performed or did not complete normally after the forward recognition camera was replaced with a new one, DTC C1AA9 will be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AA9 Front Camera Module Beam Axis Not Adjusted When the pre-crash safety system is on, the driving support ECU assembly detects that Forward Recognition Camera Learning has not been completed for 0.3 seconds or more.

  • Forward recognition camera system

  • Driving support ECU 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.

  • The pre-crash safety system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.

    Click here

PROCEDURE


  1. CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)

    Tech Tips

    Pre-crash safety system DTC C1AA9 may be stored due to a malfunction in the forward recognition camera system. Therefore, it is necessary to check for and troubleshoot forward recognition camera system DTCs first.


    1. Check for DTCs.

      Click here

      Result
      Result Proceed to
      Forward recognition camera system DTCs are not output A
      Forward recognition camera system DTCs are output B

    B

    GO TO FORWARD RECOGNITION CAMERA SYSTEM Click here

    A

  2. CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)


    1. Clear the DTCs.

      Click here

    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

      Result
      Result Proceed to
      DTC C1AA9 is not output A
      DTC C1AA9 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here