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PRE-COLLISION SYSTEM, Diagnostic DTC:C1AA9

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

If forward recognition camera adjustment 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-collision system is on, the driving support ECU assembly detects that forward recognition camera adjustment has not been completed for 0.3 seconds or more.

  • Forward recognition camera system

  • Forward recognition camera

  • Driving support ECU assembly
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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.

  • 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 forward recognition camera adjustment.

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  • The pre-collision 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.

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PROCEDURE


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    CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)

    Tip:

    Pre-collision 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.

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      1. Chassis > Front Recognition Camera > Trouble Codes


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

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    CHECK FOR DTCs (PRE-COLLISION SYSTEM)


    1. Clear the DTCs.

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      1. Body Electrical > Pre-Collision 2 > Clear DTCs


    2. Perform the following procedure.

      Tip:

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


      1. Turn the engine switch on (IG) and wait 0.3 seconds or more.

    3. Check for DTCs.

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      1. Body Electrical > Pre-Collision 2 > Trouble Codes


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