DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:C1A51

DTC Code DTC Name
C1A51 Electric Parking Brake System Malfunction

DESCRIPTION

For vehicles with full-speed following function:

When the driving support ECU assembly receives parking brake operation signals from the electric parking brake ECU via the CAN communication line, the vehicle following function is canceled.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A51 Electric Parking Brake System Malfunction With power switch on (IG), when driving support ECU assembly receives electric parking brake system malfunction signal from electric parking brake ECU for 1 seccond.

  • Electric parking brake system

  • Driving support ECU assembly

CAUTION / NOTICE / HINT

Note

When replacing the driving support ECU assembly, make sure to replace it with a new one. If a device which wasinstalled to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle, and as a result, a DTC may be stored.

PROCEDURE


  1. CHECK FOR DTC (ELECTRIC PARKING 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
      Electric parking brake system DTCs are not output A
      Electric parking brake system DTCs are output B

    B

    GO TO ELECTRIC PARKING BRAKE SYSTEM Click here

    A

  2. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Powertrain > Radar Cruise > 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


      Powertrain > Radar Cruise > Trouble Codes
      Result
      Result Proceed to
      DTC C1A51 is not output A
      DTC C1A51 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here