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FRONT RECOGNITION CAMERA SYSTEM, Diagnostic DTC:C1AA4, C1AA5

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DTC Code DTC Name
C1AA4 Yaw Rate Sensor Circuit
C1AA5 Yaw Rate Sensor Power Supply Voltage Circuit
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DESCRIPTION

The forward recognition camera receives vehicle stability signals from the airbag sensor assembly (yaw rate and acceleration sensor). If the airbag sensor assembly (yaw rate and acceleration sensor) detects a yaw rate sensor malfunction signal or yaw rate sensor power supply malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA4 or C1AA5 is stored.

DTC No. DTC Detection Condition Trouble Area
C1AA4 While driving with the front recognition camera system activated, a yaw rate sensor malfunction signal sent from the airbag sensor assembly (yaw rate and acceleration sensor) to the forward recognition camera is detected for 5 seconds or more.

  • Electronically controlled brake system

  • Airbag sensor assembly (yaw rate and acceleration sensor)

  • Forward recognition camera
C1AA5 While driving with the front recognition camera system activated, a yaw rate sensor power supply voltage malfunction signal sent from the airbag sensor assembly (yaw rate and acceleration sensor) to the forward recognition camera is detected for 5 seconds or more.
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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).

  • 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).

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / ABS/VSC/TRC / Trouble Codes.

    5. Check for DTCs (Click here).

      Result
      Result Proceed to
      Electronically controlled brake system DTCs are not output. A
      Electronically controlled brake system DTCs are output. B
      Tip:

      If the airbag sensor assembly (yaw rate and acceleration sensor) is malfunctioning, DTCs for the electronically controlled brake system will be stored. Troubleshoot the electronically controlled brake system first.

    6. Turn the power switch off.


  2. Click here

    CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Clear the DTCs (Click here).

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

      Tip:

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

    7. Check for DTCs (Click here).

      Result
      Result Proceed to
      DTC C1AA4 or C1AA5 is output. A
      DTC C1AA4 and C1AA5 are not output. B

    8. Turn the power switch off.


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    REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera (Click here).

    2. Adjust the forward recognition camera (Click here).


  4. Click here

    CHECK DTC OUTPUT (FRONT RECOGNITION CAMERA SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

    5. Clear the DTCs (Click here).

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

      Tip:

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

    7. Check for DTCs (Click here).

      Result
      Result Proceed to
      DTC C1AA4 or C1AA5 is output. A
      DTC C1AA4 and C1AA5 are not output. B

    • A

      REPLACE AIRBAG SENSOR ASSEMBLY (YAW RATE AND ACCELERATION SENSOR) (Click here)

    • B

      END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)