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DYNAMIC RADAR CRUISE CONTROL SYSTEM(except 2AR-FE), Diagnostic DTC:C1A02

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DTC Code DTC Name
C1A02 Vehicle Information Not Obtained
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DESCRIPTION

When a new millimeter wave radar sensor assembly is installed, it receives vehicle specification information (destination, steering wheel position, 2WD or AWD, etc.) from the main body ECU (multiplex network body ECU) and stores the information.

DTC C1A02 is stored when the millimeter wave radar sensor assembly cannot store the vehicle specification information from the main body ECU (multiplex network body ECU).

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A02 Vehicle Information Not Obtained While the ignition switch is ON and the dynamic radar cruise control system is operating, the millimeter wave radar sensor assembly cannot store the vehicle specification information for approximately 0.1 seconds or more. Millimeter wave radar sensor assembly
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CAUTION / NOTICE / HINT

Note:

  • When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly 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. 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.

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PROCEDURE


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    CHECK FOR DTC


    1. Clear the DTCs.


      1. Powertrain > Radar Cruise2 > 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 ignition switch to ON.

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

      3. Wait for 1 second or more.

    3. Check for DTCs.


      1. Powertrain > Radar Cruise2 > Trouble Codes


      Result
      Result Proceed to
      DTC C1A02 is not output A
      DTC C1A02 is output B

    • A

      USE SIMULATION METHOD TO CHECKClick here

    • B

      REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLYClick here