PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A50

DTC Code DTC Name
C1A50 Brake System

DESCRIPTION

When the driving support ECU assembly receives an electronically controlled brake system malfunction signal from the skid control ECU (brake booster with master cylinder assembly) via CAN communication, DTC C1A50 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A50 Brake System When the dynamic radar cruise control system is operating, the input malfunction signal from the skid control ECU (brake booster with master cylinder assembly) continues for 2.272 seconds or more.

  • Electronically controlled brake system

  • 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 (ELECTRONICALLY CONTROLLED BRAKE 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: Chassis / ABS/VSC/TRC / Trouble Codes.

    5. Check for DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Electronically controlled brake system DTCs are not output A
      Electronically controlled brake system DTCs are output B

    B

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    A

  2. 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 C1A50 is not output A
      DTC C1A50 is output (for LHD) B
      DTC C1A50 is output (for RHD) C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here

    C

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here