PRE-CRASH SAFETY 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 driving support ECU assembly determines that the forward recognition camera axis has deviated, it stores DTC C1AA8.

Also if Recognition Camera Axis Adjust has not been performed or did not complete normally after the forward recognition camera was replaced with a new one, it stores DTC C1AA9.

DTC No. DTC Detection Condition Trouble Area
C1AA8 When the pre-crash safety system is operating, the driving support ECU assembly detects that the forward recognition camera axis has deviated.

  • Front recognition camera system

  • Forward recognition camera

  • Driving support ECU assembly
C1AA9 When the pre-crash safety system is operating, the driving support ECU assembly detects that Recognition Camera Axis Adjust has not been completed.

  • Front recognition camera system

  • Forward recognition camera

  • Driving support ECU assembly

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 Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust 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. CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.

    4. Check for DTCs Click here.

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

      Tech Tips

      When any front recognition camera system DTCs are stored, the front recognition camera system is malfunctioning. Perform troubleshooting for the front recognition camera system first.


    B

    GO TO FRONT RECOGNITION CAMERA SYSTEM Click here

    A

  2. CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Enter the following menus: Body Electrical / Pre-Crash 2 / Trouble Codes.

    4. Clear the DTCs Click here.

    5. Make sure that the DTC detection conditions are met.

      Tech Tips

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

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AA8 or C1AA9 is output A
      DTC C1AA8 and C1AA9 are not output B

    A

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    B

    USE SIMULATION METHOD TO CHECK (SYMPTOM SIMULATION) Click here