DTC Detection Logic

WARNING: This page is about a different car, the 2019 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

DTC No.	CONSULT screen terms (Trouble diagnosis content)		DTC detection condition
B272D	Front buzzer (Front sonar buzzer)	1	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Speaker power circuit (terminal 19) Speaker signal (terminal 20)
			Threshold	Speaker power circuit is open or short to ground Speaker signal circuit is open or short to ground
			Diagnosis delay time	--
		2	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Speaker power circuit (terminal 19) Speaker signal (terminal 20)
			Threshold	Speaker power circuit is short to voltage Speaker signal circuit is short to voltage
			Diagnosis delay time	--