PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A40

DTC Code DTC Name
C1A40 EV ECU Device

DESCRIPTION

When the driving support ECU assembly receives a hybrid control system malfunction signal from the EV control ECU, this DTC is stored.

When DTC C1A40 is stored, the hybrid control system DTC will also be stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A40 ENG / EHV Device While the power switch is on (IG), a hybrid control system malfunction signal is detected for 3 seconds or more.

  • Hybrid control system

  • EV control ECU

  • 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 DTCs (HYBRID CONTROL SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    5. Check for DTCs.

      Click here


      Powertrain > EV > Trouble Codes
      Result
      Result Proceed to
      Hybrid control system DTCs are not output A
      Hybrid control system DTCs are output B

    B

    GO TO HYBRID CONTROL SYSTEM Click here

    A

  2. REPLACE DRIVING SUPPORT ECU ASSEMBLY


    1. Replace the driving support ECU assembly.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK FOR DTCs (PRE-CRASH 2)


    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
      Result
      Result Proceed to
      DTC C1A40 is output A
      DTC C1A40 is not output B

    A

    END (HYBRID VEHICLE CONTROL ECU WAS DEFECTIVE)

    B

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE)