DTC C1451-51: High Pressure Tube Air Bleeding Not Programmed [11/2020 - ]: Description

If air bleeding has not been performed, the No. 1 skid control ECU (brake booster with master cylinder assembly) stores DTC C1451-51 to prevent the entry of air due to pump motor operation.

DTC C1451-51 is stored when Motor Deactivate is selected, the system will not return to normal until the air bleeding procedure is performed.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority	Note
C1451-51	High Pressure Tube Air Bleeding Not Programmed	Either of the following is detected: Using the GTS, "Motor Deactivate" of the "ECB Utility" has been performed. The brake booster with master cylinder assembly has been replaced.	Air bleeding not performed	Brake Booster	A	Output ECU: No. 1 skid control ECU (brake booster with master cylinder assembly) HINT: The DTC is cleared when the conditions return to normal. ECB: Electronically Controlled Brake System

C1451-51 DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	-	-	-
Malfunction Status	Using the GTS, "Motor Deactivate" of the "ECB Utility" has been performed	◦	-
Malfunction Status	The brake booster with master cylinder assembly has been replaced	-	◦
Detection Time		-	-
Number of Trips		1 trip	1 trip

HINT:

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