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

DTC Code DTC Detection Condition Trouble Area
C1A51 With engine switch on (IG), when driving support ECU receives electric parking brake system malfunction signal from electric parking brake ECU for 1 sec.

  • Electric parking brake system

  • Electric parking brake ECU

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC (ELECTRIC PARKING BRAKE SYSTEM)


    1. Check for DTCs Click here.

      OK
      Electric parking brake system DTCs are not output.

    NG

    GO TO ELECTRIC PARKING BRAKE SYSTEM Click here

    OK

  2. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs Click here.

      OK
      DTC C1A51 is not output.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here