DTC P0101 MAF Sensor: Wiring Diagram

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Refer to POWER SUPPLY, GROUND & CIRCUIT ELEMENTS PATHFINDER-->.

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

Courtesy of NISSAN NORTH AMERICA, INC.

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.

SPECIFICATION DATA AND REFERENCE VALUES CHART

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
51	P	Mass air flow sensor	[Engine is running] Warm-up condition Idle speed	0.9 - 1.2V
51	P	Mass air flow sensor	[Engine is running] Warm-up condition Engine speed: 2, 500 rpm	1.5 - 1.8V
67	B	Sensor ground	[Engine is running] Warm-up condition Idle speed	Approximately 0V
111	BR	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.5V
111	BR	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 P	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)