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LANE DEPARTURE ALERT SYSTEM(w/ Steering Control), Diagnostic DTC:C1AA2

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DTC Code DTC Name
C1AA2 Vehicle Speed Tolerance Malfunction
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DESCRIPTION

The forward recognition camera receives vehicle speed tolerance signals from the combination meter assembly. If the combination meter assembly detects a vehicle speed tolerance malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA2 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AA2 Vehicle Speed Tolerance Malfunction 2 seconds after the engine switch is turned on (IG), a signal from the combination meter assembly indicating an abnormal vehicle speed tolerance is detected by the forward recognition camera for 50 seconds or more.

  • Meter/gauge system

  • Combination meter assembly

  • Forward recognition camera
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CAUTION / NOTICE / HINT

Note:

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

  • 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 forward recognition camera adjustment.

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  • The lane departure alert system (w/ Steering Control) 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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    INSPECT COMBINATION METER ASSEMBLY (ON-VEHICLE INSPECTION)


    1. Perform On-vehicle Inspection of the meter/gauge system.

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      Tip:

      Check the meter function by referring to On-vehicle Inspection for the combination meter assembly.

      Result
      Result Proceed to
      Combination meter assembly is normal A
      Combination meter assembly is malfunctioning B

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    CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM (w/ Steering Control))


    1. Clear the DTCs.

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      1. Chassis > LKA/LDA > 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 1 minute or more.

    3. Check for DTCs.

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      1. Chassis > LKA/LDA > Trouble Codes


      Result
      Result Proceed to
      DTC C1AA2 is not output A
      DTC C1AA2 is output B

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    REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera.

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    2. Perform forward recognition camera adjustment.

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      Result
      Proceed to
      NEXT

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    CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM (w/ Steering Control))


    1. Clear the DTCs.

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      1. Chassis > LKA/LDA > 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 1 minute or more.

    3. Check for DTCs.

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      1. Chassis > LKA/LDA > Trouble Codes


      Result
      Result Proceed to
      DTC C1AA2 is not output A
      DTC C1AA2 is output B

    • A

      END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)

    • B

      REPLACE COMBINATION METER ASSEMBLYClick here