ECM Inspection Table

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

Pulse signal is measured by CONSULT-III.

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
1	B	ECM ground	[Engine is running]  Idle speed	Body ground
2	LG/B	A/F sensor 1 heater (bank 1)	[Engine is running]  Warm-up condition  Idle speed (More than 140 seconds after starting engine)	Approximately 2.9 - 8.8V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
3	L	Throttle control motor relay power supply	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
4	L/W	Throttle control motor (Close)	[Ignition switch: ON]  Engine: Stopped Selector lever: D Accelerator pedal: Fully released	0 - 14V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
5	L/B	Throttle control motor (Open)	[Ignition switch: ON]  Engine: Stopped Selector lever: D Accelerator pedal: Fully depressed	0 - 14V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
6	GR	Heated oxygen sensor 2 heater (bank 1)	[Engine is running]  Engine speed: Below 3, 600 RPM after the following conditions are met. Engine: After warming up Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load	0 - 1.0V
			[Ignition switch: ON]  Engine: Stopped [Engine is running]  Engine speed: Above 3, 600 RPM	BATTERY VOLTAGE (11 - 14V)
10	W	Intake valve timing control solenoid valve (bank 1)	[Engine is running]  Warm-up condition  Idle speed	BATTERY VOLTAGE (11 - 14V)
			[Engine is running]  Warm-up condition  Engine speed: 2, 000rpm	7 - 12V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
11	LG	Intake valve timing control solenoid valve (bank 2)	[Engine is running]  Warm-up condition  Idle speed	BATTERY VOLTAGE (11 - 14V)
			[Engine is running]  Warm-up condition  Engine speed: 2, 000rpm	7 - 12V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
12	R	Power steering pressure sensor	[Engine is running]  Steering wheel: Being turned	0.5 - 4.5V
			[Engine is running]  Steering wheel: Not being turned	0.4 - 0.8V
13	O	Crankshaft position sensor (POS)	[Engine is running]  Warm-up condition  Idle speed NOTE: The pulse cycle changes depending on RPM at idle	Approximately 10V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Engine speed: 2, 000 RPM	Approximately 10V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
14	Y	Camshaft position sensor (PHASE)	[Engine is running]  Warm-up condition  Idle speed NOTE: The pulse cycle changes depending on RPM at idle	1.0 - 4.0V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Engine speed: 2, 000 RPM	1.0 - 4.0V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
15	W	Knock sensor (bank 1)	[Engine is running]  Idle speed	Approximately 2.5V
16	G/L	A/F sensor 1 (bank 1)	[Engine is running]  Warm-up condition  Engine speed: 2, 000 RPM	Approximately 1.8V Output voltage varies with air fuel ratio.
21 22 23 44	O/L BR GR/W O	Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1 Fuel injector No. 7	[Engine is running]  Warm-up condition  Idle speed NOTE: The pulse cycle changes depending on RPM at idle	BATTERY VOLTAGE (11 - 14V)(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Warm-up condition  Engine speed: 2, 000 RPM	BATTERY VOLTAGE (11 - 14V)(1) Courtesy of NISSAN MOTOR CO., U.S.A.
24 43	GR/G GR/G	A/F sensor 1 heater (bank 2)	[Engine is running]  Warm-up condition  Idle speed (More than 140 seconds after starting engine)	Approximately 2.9 - 8.8V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
25	O/G	Heated oxygen sensor 2 heater (bank 2)	[Engine is running]  Engine speed: Below 3, 600 RPM after the following conditions are met. Engine: After warming up Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load	0 - 1.0V
			[Ignition switch: ON]  Engine: Stopped [Engine is running]  Engine speed: Above 3, 600 RPM	BATTERY VOLTAGE (11 - 14V)
32	L	EVAP control system pressure sensor	[Ignition switch: ON]	Approximately 1.8 - 4.8V
34	R/B	Intake air temperature sensor	[Engine is running]	Approximately 0 - 4.8V Output voltage varies with intake air temperature.
35	BR/R	A/F sensor 1 (bank 1)	[Engine is running]  Warm-up condition  Engine speed: 2, 000 RPM	Approximately 1.8V Output voltage varies with air fuel ratio.
36	W	Knock sensor (bank 2)	[Engine is running]  Idle speed	Approximately 2.5V
40 41 42 63	Y/G P L G	Fuel injector No. 6 Fuel injector No. 4 Fuel injector No. 2 Fuel injector No. 8	[Engine is running]  Warm-up condition  Idle speed NOTE: The pulse cycle changes depending on RPM at idle	BATTERY VOLTAGE (11 - 14V)(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Warm-up condition  Engine speed: 2, 000 RPM	BATTERY VOLTAGE (11 - 14V)(1) Courtesy of NISSAN MOTOR CO., U.S.A.
45	L/Y	EVAP canister purge volume control solenoid valve	[Engine is running]  Idle speed Accelerator pedal: Not depressed even slightly, after engine starting	BATTERY VOLTAGE (11 - 14V)(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)	BATTERY VOLTAGE (11 - 14V)(1) Courtesy of NISSAN MOTOR CO., U.S.A.
47	Y	Sensor power supply (Throttle position sensor)	[Ignition switch: ON]	Approximately 5V
48	SB	Sensor power supply (EVAP control system pressure sensor)	[Ignition switch: ON]	Approximately 5V
49	R/Y	Sensor power supply (Refrigerant pressure sensor)	[Ignition switch: ON]	Approximately 5V
50	B	Throttle position sensor 1	[Ignition switch: ON]  Engine: Stopped Selector lever: D Accelerator pedal: Fully released	More than 0.36V
			[Ignition switch: ON]  Engine: Stopped Selector lever: D Accelerator pedal: Fully depressed	Less than 4.75V
51	W	Mass air flow sensor	[Engine is running]  Warm-up condition  Idle speed	1.0 - 1.3V
			[Engine is running]  Warm-up condition  Engine speed: 2, 500 RPM	1.7 - 2.1V
53	L	Intake valve timing control position sensor (Bank 2)	[Engine is running]  Warm-up condition  Idle speed	0 - 1.0V
			[Engine is running]  Engine speed: 2, 000 RPM	0 - 1.0V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
55	R	Heated oxygen sensor 2 (bank 1)	[Engine is running]  Revving engine from idle to 3, 000 RPM quickly after the following conditions are met. Engine: After warming up Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load	0 - Approximately 1.0V
56	BR/G	A/F sensor 1 (bank 1)	[Ignition switch: ON]	Approximately 2.2V
46 60 61 62	L/R GR/R O/W Y/R	Ignition signal No. 7 Ignition signal No. 5 Ignition signal No. 3 Ignition signal No. 1	[Engine is running]  Warm-up condition  Idle speed NOTE: The pulse cycle changes depending on RPM at idle	0 - 0.3V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Warm-up condition  Engine speed: 2, 500 RPM	0.1 - 0.6V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
66	R	Sensor ground (Throttle position sensor)	[Engine is running]  Warm-up condition  Idle speed	Approximately 0V
67	B	Sensor ground	[Engine is running]  Warm-up condition  Idle speed	Approximately 0V
68	W/L	Sensor power supply (PSP sensor)	[Ignition switch: ON]	Approximately 5V
69	W	Throttle position sensor 2	[Ignition switch: ON]  Engine: Stopped Selector lever: D Accelerator pedal: Fully released	Less than 4.75V
			[Ignition switch: ON]  Engine: Stopped Selector lever: D Accelerator pedal: Fully depressed	More than 0.36V
70	B/W	Refrigerant pressure sensor	[Engine is running]  Warm-up condition  Both A/C switch and blower fan switch: ON (Compressor operates.)	1.0 - 4.0V
71	R	Battery current sensor	[Engine is running]  Battery: Fully charged(2) Idle speed	Approximately 2.6 - 3.5V
72	Y	Intake valve timing control position sensor (Bank 1)	[Engine is running]  Warm-up condition  Idle speed	0 - 1.0V
			[Engine is running]  Engine speed: 2, 000rpm	0 - 1.0V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
73	Y/B	Engine coolant temperature sensor	[Engine is running]	Approximately 0 - 4.8V Output voltage varies with engine coolant temperature.
74	L	Heated oxygen sensor 2 (bank 2)	[Engine is running]  Revving engine from idle to 3, 000 RPM quickly after the following conditions are met. Engine: After warming up Keeping the engine speed between 3, 500 and 4, 000 RPM for 1 minute and at idle for 1 minute under no load	0 - Approximately 1.0V
75	L/P	A/F sensor 1 (bank 2)	[Ignition switch: ON]	Approximately 2.2V
78	B/W	Sensor ground (Heated oxygen sensor 2)	[Engine is running]  Warm-up condition  Idle speed	Approximately 0V
65 79 80 81	G/R V/W W/R W/G	Ignition signal No. 8 Ignition signal No. 6 Ignition signal No. 4 Ignition signal No. 2	[Engine is running]  Warm-up condition  Idle speed NOTE: The pulse cycle changes depending on RPM at idle	0 - 0.3V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
			[Engine is running]  Warm-up condition  Engine speed: 2, 500 RPM	0.1 - 0.6V(1) Courtesy of NISSAN MOTOR CO., U.S.A.
82	B/R	Sensor ground (APP sensor 1)	[Engine is running]  Warm-up condition  Idle speed	Approximately 0V
83	G/W	Sensor ground (APP sensor 2)	[Engine is running]  Warm-up condition  Idle speed	Approximately 0V
86	P	CAN communication line	-	-
90	L	Sensor power supply (APP sensor 1)	[Ignition switch: ON]	Approximately 5V
91	W/R	Sensor power supply (APP sensor 2)	[Ignition switch: ON]	Approximately 5V
94	L	CAN communication line	-	-
98	G/R	Accelerator pedal position sensor 2	[Ignition switch: ON]  Engine: Stopped Accelerator pedal: Fully released	0.25 - 0.50V
			[Ignition switch: ON]  Engine: Stopped Accelerator pedal: Fully depressed	2.0 - 2.5V
99	G/R	ASCD steering switch (Models with ICC system)	[Ignition switch: ON]  ICC steering switch: OFF	Approximately 4.3V
			[Ignition switch: ON]  MAIN switch: Pressed	Approximately 0V
			[Ignition switch: ON]  CANCEL switch: Pressed	Approximately 1.3V
			[Ignition switch: ON]  RESUME/ACCELERATE switch: Pressed	Approximately 3.7V
			[Ignition switch: ON]  SET/COAST switch: Pressed	Approximately 3V
			[Ignition switch: ON]  DISTANCE switch: Pressed	Approximately 2.2V
99	G/R	ASCD steering switch (Models with ASCD system)	[Ignition switch: ON]  ASCD steering switch: OFF	Approximately 4V
			[Ignition switch: ON]  MAIN switch: Pressed	Approximately 0V
			[Ignition switch: ON]  CANCEL switch: Pressed	Approximately 1V
			[Ignition switch: ON]  RESUME/ACCELERATE switch: Pressed	Approximately 3V
			[Ignition switch: ON]  SET/COAST switch: Pressed	Approximately 2V
101	R/W	Stop lamp switch	[Ignition switch: OFF]  Brake pedal: Fully released	Approximately 0V
			[Ignition switch: OFF]  Brake pedal: Slightly depressed	BATTERY VOLTAGE (11 - 14V)
102	GR/R	PNP switch	[Ignition switch: ON]  Selector lever: P or N	Approximately 0V
			[Ignition switch: ON]  Except the above gear position	BATTERY VOLTAGE (11 - 14V)
104	O	Throttle control motor relay	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14V)
			[Ignition switch: ON]	0 - 1.0V
106	BR/W	Accelerator pedal position sensor 1	[Ignition switch: ON]  Engine: Stopped Accelerator pedal: Fully released	0.5 - 1.0V
			[Ignition switch: ON]  Engine: Stopped Accelerator pedal: Fully depressed	4.2 - 4.8V
107	V/R	Fuel tank temperature sensor	[Engine is running]	Approximately 0 - 4.8V Output voltage varies with fuel tank temperature.
108	BR/W	ICC brake switch (Models with ICC system) ASCD brake switch (Models with ASCD system)	[Ignition switch: ON]  Brake pedal: Slightly depressed	Approximately 0V
			[Ignition switch: ON]  Brake pedal: Fully released	BATTERY VOLTAGE (11 - 14V)
109	L/W	Ignition switch	[Ignition switch: OFF]	0V
			[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
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
			[Ignition switch: OFF]  More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14V)
113	GR	Fuel pump relay	[Ignition switch: ON]  For 1 second after turning ignition switch ON [Engine is running]	0 - 1.5V
			[Ignition switch: ON]  More than 1 second after turning ignition switch ON	BATTERY VOLTAGE (11 - 14V)
115 116	B B/W	ECM ground	[Engine is running]  Idle speed	Body ground
117	L/Y	EVAP canister vent control valve	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
119 120	BR BR	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14V)
121	W	Power supply for ECM (Back-up)	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14V)
(1) Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) (2) Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to ON-VEHICLE REPAIR .