ECM Inspection Table

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

Pulse signal is measured by CONSULT-III.

CAUTION: Never 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.

VOLTAGE SPECIFICATION

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
1	B	ECM ground	[Engine is running] Idle speed	Body ground
2	R/G	A/F sensor 1 heater (Bank 1)	[Engine is running] Warm-up condition Idle speed	Courtesy of NISSAN MOTOR CO., U.S.A.
3	R	Throttle control motor relay power supply	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14 V)
4	O/L	Throttle control motor (Close)	[Ignition switch: ON] Engine stopped Shift lever: D Accelerator pedal: Fully released	Courtesy of NISSAN MOTOR CO., U.S.A.
5	W/L	Throttle control motor (Open)	[Ignition switch: ON] Engine stopped Shift lever: D Accelerator pedal: Fully depressed	Courtesy of NISSAN MOTOR CO., U.S.A.
6	GR	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 - 1.0 V
6	GR	Heated oxygen sensor 2 heater (Bank 2)	[Ignition switch: ON] Engine stopped [Engine is running] Engine speed: Above 3, 600 RPM	BATTERY VOLTAGE (11 - 14 V)
8	W	Electronic controlled engine mount-1	[Engine is running] Engine speed: Above 950 RPM	BATTERY VOLTAGE (11 - 14 V)
			[Engine is running] For 2 seconds after engine speed: 950 RPM or less	0 - 1.0 V
			[Engine is running] 2 seconds after engine speed: 950 RPM or less	2.0 - 3.0 V
9	W/R	Electronic controlled engine mount-2	[Engine is running] Engine speed: Below 950 RPM	BATTERY VOLTAGE (11 - 14 V)
			[Engine is running] For 2 seconds after engine speed: 950 RPM or more	0 - 1.0 V
			[Engine is running] 2 seconds after engine speed: 950 RPM or more	2.0 - 3.0 V
10	Y/L	Intake valve timing control solenoid valve (Bank 2)	[Engine is running] Warm-up condition Idle speed	BATTERY VOLTAGE (11 - 14 V)
10	Y/L	Intake valve timing control solenoid valve (Bank 2)	[Engine is running] Warm-up condition Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
11	R/L	Intake valve timing control solenoid valve (Bank 1)	[Engine is running] Warm-up condition Idle speed	BATTERY VOLTAGE (11 - 14 V)
11	R/L	Intake valve timing control solenoid valve (Bank 1)	[Engine is running] Warm-up condition Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
12	W	Power steering pressure sensor	[Engine is running] Steering wheel: Being turned	0.5 - 4.5 V
12	W	Power steering pressure sensor	[Engine is running] Steering wheel: Not being turned	0.4 - 0.8 V
13	W	Crankshaft position sensor (POS)	[Engine is running] Warm-up condition Idle speed NOTE: The pulse cycle changes depending on RPM at idle	Courtesy of NISSAN MOTOR CO., U.S.A.
13	W	Crankshaft position sensor (POS)	[Engine is running] Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
14	W	Camshaft position sensor (PHASE) (Bank 2)	[Engine is running] Warm-up condition Idle speed NOTE: The pulse cycle changes depending on RPM at idle	Courtesy of NISSAN MOTOR CO., U.S.A.
14	W	Camshaft position sensor (PHASE) (Bank 2)	[Engine is running] Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
15	W	Knock sensor	[Engine is running] Idle speed	Approximately 2.5 V
16	BR	A/F sensor 1 (Bank 1)	[Engine is running] Warm-up condition Idle speed	Approximately 3.1 V
35	O/B			Approximately 2.6 V
56	V			Approximately 2.3 V
75	P			Approximately 2.3 V
17 18 19 20	P/B GL L/W EGR	volume control valve	[Engine is running] Idle speed	0.1 - 14 V
21 22 23	L/W R/Y R/B	Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1	[Engine is running] Warm-up condition Idle speed NOTE: The pulse cycle changes depending on RPM at idle	Courtesy of NISSAN MOTOR CO., U.S.A.
21 22 23	L/W R/Y R/B	Fuel injector No. 5 Fuel injector No. 3 Fuel injector No. 1	[Engine is running] Warm-up condition Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
24	W	A/F sensor 1 heater (Bank 2)	[Engine is running] Warm-up condition Idle speed	Courtesy of NISSAN MOTOR CO., U.S.A.
25	P	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 - 1.0 V
25	P	Heated oxygen sensor 2 heater (Bank 1)	[Ignition switch: ON] Engine stopped [Engine is running] Engine speed: Above 3, 600 RPM	BATTERY VOLTAGE (11 - 14 V)
29	Y/G	VIAS control solenoid valve	[Engine is running] Idle speed	BATTERY VOLTAGE (11 - 14 V)
29	Y/G	VIAS control solenoid valve	[Engine is running] Engine speed: Between 1, 800 and 3, 600 RPM	0 - 1.0 V
32	BR	EVAP control system pressure sensor	[Ignition switch: ON]	Approximately 1.8 - 4.8 V
33	Y	Camshaft position sensor (PHASE) (Bank 1)	[Engine is running] Warm-up condition Idle speed NOTE: The pulse cycle changes depending on RPM at idle	Courtesy of NISSAN MOTOR CO., U.S.A.
33	Y	Camshaft position sensor (PHASE) (Bank 1)	[Engine is running] Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
34	Y/G	Intake air temperature sensor	[Engine is running]	Approximately 0 - 4.8 V Output voltage varies with intake air temperature.
40 41 42	V/W R/L R/W	Fuel injector No. 6 Fuel injector No. 4 Fuel injector No. 2	[Engine is running] Warm-up condition Idle speed NOTE: The pulse cycle changes depending on RPM at idle	Courtesy of NISSAN MOTOR CO., U.S.A.
40 41 42	V/W R/L R/W	Fuel injector No. 6 Fuel injector No. 4 Fuel injector No. 2	[Engine is running] Warm-up condition Engine speed: 2, 000 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
45	V/R	EVAP canister purge volume control solenoid valve	[Engine is running] Idle speed Accelerator pedal: Not depressed even slightly, after engine starting.	Courtesy of NISSAN MOTOR CO., U.S.A.
45	V/R	EVAP canister purge volume control solenoid valve	[Engine is running] Engine speed: About 2, 000 RPM (More than 100 seconds after starting engine)	Courtesy of NISSAN MOTOR CO., U.S.A.
47	R	Throttle position sensor power supply	[Ignition switch: ON]	Approximately 5 V
48	G/O	EVAP control system pressure sensor power supply	[Ignition switch: ON]	Approximately 5 V
49	BR/Y	Refrigerant pressure sensor power supply	[Ignition switch: ON]	Approximately 5 V
50	Y	Throttle position sensor 1	[Ignition switch: ON] Engine stopped Shift lever: D Accelerator pedal: Fully released	More than 0.36 V
50	Y	Throttle position sensor 1	[Ignition switch: ON] Engine stopped Shift lever: D Accelerator pedal: Fully depressed	Less than 4.75 V
51	W/L	Mass air flow sensor	[Engine is running] Warm-up condition Idle speed	1.0 - 1.3 V
51	W/L	Mass air flow sensor	[Engine is running] Warm-up condition Engine speed: 2, 500 RPM	1.6 - 2.0 V
54	P/L	EGR temperature sensor	[Ignition switch: ON]	Less than 4.5 V
54	P/L	EGR temperature sensor	[Engine is running] Warm-up condition EGR system: Operating	0 - 1.5 V
55	W	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 1.0 V
57	W/R	A/F sensor 1 (Bank 2)	[Engine is running] Warm-up condition Idle speed	Approximately 2.6 V
58	LG/R			Approximately 2.3 V
76	O			Approximately 3.1 V
77	LG			Approximately 2.3 V
60 61 62	P/L L/R Y/R	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	Courtesy of NISSAN MOTOR CO., U.S.A.
60 61 62	P/L L/R Y/R		[Engine is running] Warm-up condition Engine speed: 2, 500 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
66	G	Throttle position sensor ground	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
67	B	Sensor ground	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
68	BR/W	PSP sensor power supply	[Ignition switch: ON]	Approximately 5 V
69	L	Throttle position sensor 2	[Ignition switch: ON ] Engine stopped Shift lever: D Accelerator pedal: Fully released	Less than 4.75 V
69	L	Throttle position sensor 2	[Ignition switch: ON ] Engine stopped Shift lever: D Accelerator pedal: Fully depressed	More than 0.36 V
70	W	Refrigerant pressure sensor	[Engine is running] Warm-up condition Both A/C switch and blower fan switch: ON (Compressor operates.)	1.0 - 4.0 V
73	Y/B	Engine coolant temperature sensor	[Engine is running]	Approximately 0 - 4.8 V Output voltage varies with engine coolant temperature.
74	W	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 1.0 V
78	B	Heated oxygen sensor 2 ground	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
79 80 81	GR/R GR G/R	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	Courtesy of NISSAN MOTOR CO., U.S.A.
79 80 81	GR/R GR G/R		[Engine is running] Warm-up condition Engine speed: 2, 500 RPM	Courtesy of NISSAN MOTOR CO., U.S.A.
82	B	APP sensor 1 ground	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
83	G	APP sensor 2 ground	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
85	SB	Data link connector	-	-
86	P	CAN communication line	-	-
90	R/V	APP sensor 1 power supply	[Ignition switch: ON]	Approximately 5 V
91	O	APP sensor 2 power supply	[Ignition switch: ON]	Approximately 5 V
94	L	CAN communication line	-	-
98	W/B	Accelerator pedal position sensor 2	[Ignition switch: ON] Engine stopped Accelerator pedal: Fully released	0.25 - 0.5 V
98	W/B	Accelerator pedal position sensor 2	[Ignition switch: ON] Engine stopped Accelerator pedal: Fully depressed	2.0 - 2.5 V
99	G/Y	ASCD steering switch	[Ignition switch: ON] ASCD steering switch: OFF	Approximately 4 V
			[Ignition switch: ON] MAIN switch: Pressed	Approximately 0 V
			[Ignition switch: ON] CANCEL switch: Pressed	Approximately 1 V
			[Ignition switch: ON] RESUME/ACCELERATE switch: Pressed	Approximately 3 V
			[Ignition switch: ON] SET/COAST switch: Pressed	Approximately 2 V
101	R/G	Stop lamp switch	[Ignition switch: OFF] Brake pedal: Fully released	Approximately 0 V
101	R/G	Stop lamp switch	[Ignition switch: OFF] Brake pedal: Slightly depressed	BATTERY VOLTAGE (11 - 14 V)
102	O/B	PNP switch	[Ignition switch: ON] Shift lever: P or N	BATTERY VOLTAGE (11 - 14 V)
102	O/B	PNP switch	[Ignition switch: ON] Except the above gear position	Approximately 0 V
104	O	Throttle control motor relay	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14 V)
104	O	Throttle control motor relay	[Ignition switch: ON]	0 - 1.0 V
106	W	Accelerator pedal position sensor 1	[Ignition switch: ON] Engine stopped Accelerator pedal: Fully released	0.5 - 1.0 V
106	W	Accelerator pedal position sensor 1	[Ignition switch: ON] Engine stopped Accelerator pedal: Fully depressed	4.2 - 4.8 V
107	R/L	Fuel tank temperature sensor	[Engine is running]	Approximately 0 - 4.8 V Output voltage varies with fuel tank temperature.
108	G/B	ASCD brake switch	[Ignition switch: ON] Brake pedal: Fully released	BATTERY VOLTAGE (11 - 14 V)
108	G/B	ASCD brake switch	[Ignition switch: ON] Brake pedal: Slightly depressed	Approximately 0 V
109	R	Ignition switch	[Ignition switch: OFF]	0 V
109	R	Ignition switch	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14 V)
111	W/B	ECM relay (Self shut-off)	[Engine is running] [Ignition switch: OFF] For a few seconds after turning ignition switch OFF	0 - 1.5 V
111	W/B	ECM relay (Self shut-off)	[Ignition switch: OFF] More than a few seconds after turning ignition switch OFF	BATTERY VOLTAGE (11 - 14 V)
113	B/O	Fuel pump relay	[Ignition switch: ON] For 1 second after turning ignition switch ON [Engine is running]	0 - 1.5 V
113	B/O	Fuel pump relay	[Ignition switch: ON] More than 1 second after turning ignition switch ON	BATTERY VOLTAGE (11 - 14 V)
115 116	B B	ECM ground	[Engine is running] Idle speed	Body ground
117	LG/B	EVAP canister vent control valve	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14 V)
119 120	R/G R/G	Power supply for ECM	[Ignition switch: ON]	BATTERY VOLTAGE (11 - 14 V)
121	G	Power supply for ECM (Back-up)	[Ignition switch: OFF]	BATTERY VOLTAGE (11 - 14 V)
STAR in illustration = Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)