ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1451

DTC Code DTC Name
C1451 Motor Drive Permission Malfunction

DESCRIPTION

If air bleeding has not been performed, the skid control ECU (brake booster with master cylinder assembly) stores DTC C1451 to prevent the entry of air due to pump motor operation.

DTC C1451 is stored when Motor Invalid is selected, the system will not return to normal until the air bleeding procedure is performed.

DTC No. Detection Item INF Code DTC Detection Condition Trouble Area Note
C1451 Motor Drive Permission Malfunction 1152

Either of the following is detected:


  1. Using the GTS, "Motor Invalid" of the "ECB Utility" has been performed.

  2. The brake booster with master cylinder assembly has been replaced.

 Air bleeding not performed

Electronically controlled brake system DTC

Tech Tips


  • The DTC is cleared when the conditions return to normal.

  • ECB: Electronically Controlled Brake System
DTC Detection Conditions: C1451 INF Code: 1152
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status Using the GTS, "Motor Invalid" of the "ECB* Utility" has been performed. ○ -
The brake booster with master cylinder assembly has been replaced. - ○
Detection Time - -
Number of Trips 1 trip 1 trip
*: Electronically Controlled Brake System

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

PROCEDURE


  1. PERFORM AIR BLEEDING


    1. Bleed the air from the brake system.

      Click here

      Tech Tips

      If air bleeding has been performed, this DTC will be cleared.

      Result
      Proceed to
      NEXT

    NEXT

  2. RECONFIRM DTC


    1. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C1451 is output. A
      DTC C1451 is not output. B

    A

    PERFORM AIR BLEEDING AGAIN Click here

    B

    END