PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A01

DTC Code DTC Name
C1A01 Driving Support ECU

DESCRIPTION

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

Based on signals from the millimeter wave radar sensor assembly, the driving support ECU assembly calculated the risk of a collision and operates the pre-crash safety system when it determines that the risk is high.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A01 Driving Support ECU While the ignition switch is ON, the driving support ECU assembly detects an internal malfunction for approximately 1 second. 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.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Clear DTCs

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

      Tech Tips

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

    3. Check for DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes
      OK
      DTC C1A01 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

    REPLACE DRIVING SUPPORT ECU ASSEMBLY for LHD: Click here
    REPLACE DRIVING SUPPORT ECU ASSEMBLY for RHD: Click here