DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:C1A50

DTC Code DTC Name
C1A50 Brake System

DESCRIPTION

When the driving support ECU assembly detects a signal indicating a malfunction in the electronically controlled brake system from the skid control ECU assembly via CAN communication, DTC C1A50 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A50 Brake System While the power switch is on (IG), a signal from the skid control ECU assembly indicating a malfunction in the electronically controlled brake system is detected for 0.3 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.

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

    Click here

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.


      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 (RADAR CRUISE)


    1. Clear the DTCs.


      Powertrain > Radar Cruise > Clear DTCs

    2. Perform the following to make sure that the DTC detection conditions are met.

      Tech Tips

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


      1. Turn the power switch on (IG).

      2. Wait for 1 second or more.

    3. Check for DTCs.


      Powertrain > Radar Cruise > Trouble Codes
      Result
      Result Proceed to
      DTC C1A50 is not output A
      DTC C1A50 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here