DTC P0101 MAF Sensor: Wiring Diagram

Fig 1: Identifying Wiring Diagram (EC-MAFS-01)

Courtesy of NISSAN MOTOR CO., U.S.A.

Specification data are reference values and are measured between each terminal and ground.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

WIRE COLOR AND TERMINAL NO. DESCRIPTION

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
51	L/R	Mass air flow sensor	[Engine is running] Warm-up condition Idle speed	0.9 - 1.1V
51	L/R	Mass air flow sensor	[Engine is running] Warm-up condition Engine speed: 2, 500 rpm.	1.5 - 1.8V
67	B/W	Sensor ground (MAF sensor, IAT sensor, ECT sensor, EVAP control system pressure sensor, PSP sensor, ASCD steering switch, Refrigerant pressure sensor)	[Engine is running] Warm-up condition Idle speed	Approximately 0V
111	W/G	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.0V
111	W/G	ECM relay (Self shut-off)	[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14V)
119 120	R/G	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)