DYNAMIC RADAR CRUISE CONTROL SYSTEM(for 2AR-FE), Diagnostic DTC:C1A0A

DTC Code DTC Name
C1A0A Front Radar Sensor Region Code Mismatch

DESCRIPTION

When the destination information in the millimeter wave radar sensor assembly and forward recognition camera do not match, DTC C1A0A is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A0A Front Radar Sensor Region Code Mismatch When the ignition switch is ON and the dynamic radar cruise control system is operating, the destination information in the forward recognition camera and millimeter wave radar sensor assembly do not match for approximately 1.3 seconds or more.

  • Millimeter wave radar sensor assembly

  • Forward recognition camera

CAUTION / NOTICE / HINT

Note


  • Check that the millimeter wave radar sensor assembly has not been replaced with one from another vehicle.

  • When replacing the millimeter wave radar sensor assembly, make sure to replace it with a new one. If a device which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle, and as a result, a DTC may be stored.

  • When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

    Click here

  • 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 Learning.

    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 FOR DTC


    1. Clear the DTCs.


      Powertrain > Radar Cruise2 > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

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


      1. Turn the ignition switch to ON.

      2. Turn the dynamic radar cruise control system on using the cruise control main switch.

      3. Wait for 2 seconds or more.

    3. Check for DTCs.


      Powertrain > Radar Cruise2 > Trouble Codes
      Result
      Result Proceed to
      DTC C1A0A is not output A
      DTC C1A0A is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  2. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY


    1. Replace the millimeter wave radar sensor assembly.

      Click here

    2. Perform millimeter wave radar sensor assembly adjustment.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTC


    1. Clear the DTCs.


      Powertrain > Radar Cruise2 > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

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


      1. Turn the ignition switch to ON.

      2. Turn the dynamic radar cruise control system on using the cruise control main switch.

      3. Wait for 2 seconds or more.

    3. Check for DTCs.


      Powertrain > Radar Cruise2 > Trouble Codes
      Result
      Result Proceed to
      DTC C1A0A is not output A
      DTC C1A0A is output B

    A

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)

    B

  4. REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera with a new one.

      Click here

    2. Perform forward recognition camera adjustment.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE)