DTC P0101 MAF Sensor: Wiring Diagram

For PG, go to POWER SUPPLY, GROUND & CIRCUIT ELEMENTS .

Fig 1: 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.

CONNECTOR TERMINAL SPECIFICATION DATA REFERENCE VALUES

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
51	W/L	Mass air flow sensor	[Engine is running] Warm-up condition Idle speed	1.0 - 1.3V
51	W/L	Mass air flow sensor	[Engine is running] Warm-up condition Engine speed: 2, 500 rpm	1.6 - 2.0V
67	B	Sensor ground	[Engine is running] Warm-up condition Idle speed	Approximately 0V
111	W/B	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.5V
111	W/B	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 R/G	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)