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PRE-CRASH SAFETY 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 obstacles in front of the vehicle.

Based on this information, the driving support ECU assembly calculates the risk of a crash and operates the pre-crash system when it determines that the risk is high.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A01 Driving Support ECU During the initial check, when the engine switch is on (IG) or the pre-crash safety system is operating, the driving support ECU assembly detects an internal malfunction for approximately 2 seconds. Driving support ECU assembly
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PROCEDURE


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    CHECK FOR DTCs (PRE-CRASH 2)


    1. Clear the DTCs.

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      1. Body Electrical > Pre-Crash 2 > Clear DTCs


    2. Make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

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


      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.

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