DTC Detection Logic

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P1564	ASCD SW (ASCD steering switch)	Diagnosis condition	--
		Signal (terminal)	ASCD steering switch signal
		Threshold	An excessively high voltage signal from the ASCD steering switch is sent to ECM ECM detects that input signal from the ASCD steering switch is out of the specified range ECM detects that the ASCD steering switch is stuck ON
		Diagnosis delay time	--