Component Inspection

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MASS AIR FLOW SENSOR

With CONSULT

Turn ignition switch OFF.
Reconnect all harness connectors disconnected.
Start engine and warm it up to normal operating temperature.
Connect CONSULT and select "DATA MONITOR" mode.

Select "MASS AIR FLOW SENSOR" and check the indication.

Monitor item	Condition	Indication (V)
MASS AIR FLOW SENSOR	Ignition switch ON (Engine stopped.)	-2 lb/min(-120 lb/hr) to 2 lb/min(120 lb/hr)

Without CONSULT

Turn ignition switch OFF.
Reconnect all harness connectors disconnected.
Start engine and warm it up to normal operating temperature.

Check the voltage between ECM harness connector terminals under the following conditions.

ECM			Condition	Voltage (V)
Connector	+	-
	Terminal	Terminal
F101	187	127	Ignition switch ON (Engine stopped.)	Less than 0.8V

Is the inspection result normal?

YES

Inspection End.

Clean or replace malfunctioning mass air flow sensor. Refer to Removal and Installation .