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PRE-COLLISION SYSTEM, Diagnostic DTC:C1A01

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DTC Code DTC Name
C1A01 Driving Support ECU
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DESCRIPTION

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

Based on signals from the millimeter wave radar sensor assembly, the driving support ECU assembly calculates the possibility of a collision and operates the pre-collision system if it determines that the possibility is high.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A01 Driving Support ECU When the power switch is on (IG), the driving support ECU assembly detects an internal malfunction for approximately 1 second. Driving support ECU assembly
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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.

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PROCEDURE


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    CHECK FOR DTCs (PRE-COLLISION SYSTEM)


    1. Clear the DTCs.

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      1. Body Electrical > Pre-Collision 2 > 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 power switch on (IG) and wait 1 second or more.

    3. Check for DTCs.

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      1. Body Electrical > Pre-Collision 2 > Trouble Codes


      Result
      Result Proceed to
      DTC C1A01 is not output A
      DTC C1A01 is output B