DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan Maxima. 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
U1721	R-PSHELF L-WOOFER (Rear subwoofer LH)	OPEN	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer LH (terminals 5 and 6)
			Threshold	-
			Diagnosis delay time	30 seconds or more
		SHORT	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer LH (terminals 5 and 6)
			Threshold	-
			Diagnosis delay time	30 seconds or more
		GND-SHORT	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer LH (terminals 5 and 6)
			Threshold	-
			Diagnosis delay time	30 seconds or more
		VB-SHOR	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer LH (terminals 5 and 6)
			Threshold	-
			Diagnosis delay time	30 seconds or more
U1729	R-PSHELF R-WOOFER (Rear subwoofer RH)	OPEN	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer RH (terminals 1 and 2)
			Threshold	-
			Diagnosis delay time	30 seconds or more
		SHORT	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer RH (terminals 1 and 2)
			Threshold	-
			Diagnosis delay time	30 seconds or more
		GND-SHORT	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer RH (terminals 1 and 2)
			Threshold	-
			Diagnosis delay time	30 seconds or more
		VB-SHOR	Diagnosis condition	When ignition switch is ON.
			Signal (terminal)	Sound signal between BOSE speaker amp. and rear subwoofer RH (terminals 1 and 2)
			Threshold	-
			Diagnosis delay time	30 seconds or more