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 power 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. Using the intelligent tester, enter the following menus: Chassis / Electric Parking Brake / DTC.

    2. Select "Clear" and clear the data.

    3. Recheck for DTCs.

      OK
      Electric parking brake system DTC is not output.

    NG

    GO TO ELECTRIC PARKING BRAKE SYSTEM Click here

    OK

  2. CHECK FOR DTC


    1. Using the intelligent tester, enter the following menus: Powertrain / Radar Cruise / DTC.

    2. Select "Clear" and clear the data.

    3. Recheck for DTCs.

      OK
      DTC C1A51 is not output.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here