PRE-COLLISION SYSTEM, Diagnostic DTC:C1A10

DTC Code DTC Name
C1A10 Front Radar Sensor

DESCRIPTION

The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect objects in front of the vehicle.

Based on this signals from the millimeter wave radar sensor assembly, the driving support ECU assembly sends pre-collision system control operation signals.

If the driving support ECU assembly receives an internal malfunction signal from the millimeter wave radar sensor assembly, it stores DTC C1A10.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A10 Front Radar Sensor When the power switch is on (IG), the driving support ECU assembly receives an internal malfunction signal from the millimeter wave radar sensor assembly for approximately 0.2 seconds.

  • Millimeter wave radar sensor assembly

  • Driving support ECU assembly

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 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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  • 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


  1. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY


    1. Replace the millimeter wave radar sensor assembly.

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    2. Adjust the millimeter wave radar sensor assembly.

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      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTCs (PRE-COLLISION SYSTEM)


    1. Clear the DTCs.

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      Body Electrical > Pre-Collision 2 > 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 power switch on (IG) and wait 0.2 seconds or more.

    3. Check for DTCs.

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      Body Electrical > Pre-Collision 2 > Trouble Codes
      Result
      Result Proceed to
      DTC C1A10 is not output A
      DTC C1A10 is output B

    A

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here